1990 Cadillac Eldorado Replacement Engine Parts

Change Vehicle
Show items:
Sort by:
  • Engine Block
  • Crankshafts
  • Cylinder Heads
  • Valve Covers
  • Valves & Valvetrain Parts
  • Pistons, Rings & Connecting...
  • Timing Gears, Chains & Covers
  • Motor Mounts
  • Oil Coolers
  • Oil Filters
  • Engine Management Systems
  • Engine Bearings
  • Harmonic Balancers
  • Oil Pumps
  • Engine Sensors, Relays, Swi...
  • Oil Pans
  • Engine Pulleys
  • Auxiliary Drive Belts
  • Engine Rebuild Kits
  • Engine Oil Additives
  • Motor Oils
    • (0 reviews)
      # 929855840
      Cadillac Eldorado Right Head Cast # 820 Left Head Cast # 820 1990, Remanufactured Complete Cylinder Head by Replace®. If your vehicle has a cylinder head problem, don’t waste time and money having your originals repaired. Replace...
      Completely disassembled, thoroughly cleaned, and carefully inspectedChecked for cracks
      $223.38
    • (0 reviews)
      # mpn1641465748
      Cadillac Eldorado 1990, Standard Volume and Pressure Oil Pump by Melling®. Shaft With Our Part Number IS-130 226mm (8.89 Inch) Long Shaft / Oil Pan Must Be Replaced With OEM 3532055. Melling oil pumps provide dependable performance...
      Right for your vehicle and lifestyleMade from high-quality materials for ultimate durability
      $98.64
    • (1 review)
      # 631870009
      Cadillac Eldorado 1990, Elite™ Serpentine Belt by Continental® ContiTech™. Continental Elite™ has you covered with quality serpentine belts that efficiently link two or more rotating shafts and feature quieter, cooler performance,...
      Sturdy materials maintain tension integrity during belt service life for better wear resistanceGreater flexibility and cooler operation thanks to advanced materials
      $17.36 - $23.90
    • (0 reviews)
      # mpn898128197
      Cadillac Eldorado 1990, GM Original Equipment™ Remanufactured Engine Control Module by ACDelco®. An ACDelco GM Original Equipment Engine Control Module is a GM-recommended replacement for your vehicle’s original component. It...
      Dictates the operation of your vehicle's vital systems, which is critical to the performance of your vehicleGM-recommended replacement part for your GM vehicle's original factory component
      $91.47
    • (0 reviews)
      # 554321159
      Cadillac Eldorado 1990, Ultra™ Synthetic Spin-On Oil Filter by FRAM®. 1 Piece. Engineered for maximum engine protection without affecting oil flow this full-flow filter utilizes dual-layer synthetic media that provides 99%+ filtration...
      Designed for Full-Flow oil filtrationFor use with synthetic oil
      $7.50 - $8.50
    • (0 reviews)
      # mpn881646
      Cadillac Eldorado 1990, DistancePlus™ Cellulose Paper Spin-On/Canister Oil Filter by Bosch®. Bosch DistancePlus Oil Filters are high efficiency/high capacity oil filters designed to keep oil clean longer and protect the vehicle's...
      Designed to work with a synthetic, semi-synthetic, or conventional oil brand99.9% efficient to remove more dirt
      $10.21
    • (0 reviews)
      # mpn4480879123
      Cadillac Eldorado 1990, HP™ High Performance Spin-On Canister Oil Filter by FRAM®. Do you feel shaking or shuddering when you engage the clutch; hear grinding noise when you shift gears? Does your engine race without an increase in...
      Quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $11.34
    • (0 reviews)
      # mpn923200
      Cadillac Eldorado 1990, Oil Filter by Crown®. Crown Automotive is just the ticket if you want to get the most out of your vehicle as well as revel in a more exciting driving experience. You will surely get a real bang for the buck!
      Developed to improve your driving experienceConstructed to ensure ultimate operation
      $6.45
    • (0 reviews)
      # 554448180
      Cadillac Eldorado 1990, Tough Guard™ Spin-On Oil Filter by FRAM®. 1 Piece. This filter is designed to ensure maximum protection to your engine under any driving conditions. FRAM Tough Guard oil filter uses only high-quality media...
      Ensures extreme engine protection and oil filtrationDesigned for Premium Conventional and Synthetic Blend Motor Oil
      $5.87 - $7.27
    • (0 reviews)
      # mpn620488741
      Cadillac Eldorado 1990, Enhanced Cellulose Spin-On Full-Flow Lube Oil Filter by WIX®. Designed utilizing the latest technology, this product by Wix features premium quality and will perform better than advertised. Perfect for your...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $4.29
    • (0 reviews)
      # 554325162
      Cadillac Eldorado 1990, Extra Guard™ Cartridge Spin-On Oil Filter by FRAM®. 1 Piece. The moving parts in your engine are cushioned by a very thin film of oil between the moving parts and bearings. If dirt gets in between these...
      Provides superior engine protection and oil filtrationDesigned for Conventional Motor Oil
      $4.04 - $4.59
    • (0 reviews)
      # mpn2277252
      Cadillac Eldorado 1990, OE Solutions™ Regular Grade Type Harmonic Balancer Assembly Kit by Dorman®. Designed utilizing the latest technology, this product by Dorman features premium quality and will perform better than advertised....
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $54.95
    • (0 reviews)
      # mpn1146641206
      Cadillac Eldorado 1990, Harmonic Balancer by Pioneer Automotive®. Designed utilizing the latest technology, this product by Pioneer Automotive features premium quality and will perform better than advertised. Perfect for your vehicle...
      Made to deliver reliable service for a long timeRugged construction to withstand harsh conditions
      $91.96
    • (0 reviews)
      # mpn2215315
      Cadillac Eldorado 1990, Front Engine Torque Strut Mount by Anchor®. Designed utilizing the latest technology, this product by Anchor features premium quality and will perform better than advertised. Perfect for your vehicle and...
      Direct OEM replacementPrevents excessive engine movement, reducing vibration and noise
      $5.63
    • (0 reviews)
      # mpn2215320
      Cadillac Eldorado 1990, Front Passenger Side Engine Mount by Anchor®. Denotes Hydraulic Mount. If you feel vibration accompanied by unusual noise when driving, this can be the sign of a bad engine mount. Replace it with a mount from the...
      Direct OEM replacementSecurely supports the engine on the chassis
      $36.68
    • (0 reviews)
      # mpn1290150
      Cadillac Eldorado 1990, Front Engine Torque Strut Mount by Westar®. Engineered to minimize vibration from the engine. This engine mount will make sure your engine runs quietly and does not rattle when started and while driving.
      Build with quality that matches or exceeds OEM SpecificationsPerfect fit
      $7.17
    • (0 reviews)
      # 539280840
      Cadillac Eldorado 1990, Engine Mount by Westar®. Westar's OE replacement motor mounts effectively control engine movement for vibration-free driving. Since 1986, Westar has specialized in distributing top-of-the-line engine mounts and...
      Build with quality that matches or exceeds OEM SpecificationsPerfect fit
      $34.39 - $34.43
    • (0 reviews)
      # mpn2276422230
      Cadillac Eldorado with Stamped B01N9BTXQ2 1990, Oil Pan with Gasket by Replace®. Stop oil leaks and keep your engine operating at its best with this superior Engine Oil Pan. Replace your worn out or cracked oil pan with this product to...
      Direct replacementMeets or exceeds OE standards
      $95.94
    • (0 reviews)
      # mpn366955050
      Cadillac Eldorado 1990, New Oil Pan without Gaskets by Spectra Premium®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $65.60
    • (0 reviews)
      # mpn902821855
      Cadillac Eldorado 1990, Camshaft Sprocket by Melling®. Timing gears and sprockets from Melling are provided as a part of a complete timing kit program including chain and sprocket kits, as well as for the individual gear and sprocket...
      Right for your vehicle and lifestyleMade from high-quality materials for ultimate durability
      $27.05
    • (0 reviews)
      # mpn902821149
      Cadillac Eldorado 1990, Crankshaft Sprocket by Melling®. Timing gears and sprockets from Melling are provided as a part of a complete timing kit program including chain and sprocket kits, as well as for the individual gear and sprocket...
      Right for your vehicle and lifestyleMade from high-quality materials for ultimate durability
      $5.56
    • (0 reviews)
      # mpn902736111
      Cadillac Eldorado 1990, Timing Set by Melling®. Melling timing chain kits provide an efficient and economical way to provide the timing components needed for a quality engine rebuild. Timing chain options include both standard and...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $35.54
    • (0 reviews)
      # mpn1690791
      Cadillac Eldorado 1990, Center 7 Plates Inverted Rollers Timing Chain by Cloyes®. Keep your engine’s valvetrain and balance shafts in perfect time with Cloyes, the world leader in timing drive systems. No matter whether you need a...
      Maintains critical valvetrain and balance shaft timingPrevents performance problems and possible engine damage that can result from incorrect timing
      $17.54
    • (0 reviews)
      # mpn1700632
      Cadillac Eldorado 1990, Outer Timing Crankshaft Sprocket by Cloyes®. Meets or exceeds OEM performance requirements. Cloyes utilizes the latest in design and material technology, ensuring quiet and maintenance-free experience.
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $3.01
    • (0 reviews)
      # mpn1709793
      Cadillac Eldorado 1990, Timing Set by Cloyes®. Meets or exceeds OEM performance requirements. Cloyes utilizes the latest in design and material technology, ensuring quiet and maintenance-free experience.
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $28.07
    • (0 reviews)
      # mpn62539007
      Cadillac Eldorado 1990, 3 Pieces Timing Set by Sealed Power®. Designed utilizing the latest technology, this product by Sealed Power features premium quality and will perform better than advertised. Perfect for your vehicle and...
      Direct replacementManufactured to strict engineering quality standards
      $32.90
    • (0 reviews)
      # mpn902803423
      Cadillac Eldorado 1990, Rocker Arm by Melling®. Melling lists rocker arms for both domestic and import applications. Depending on OEM design specifications, Melling rocker arms are provided in either stamped or cast materials. Each...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $7.45
    • (0 reviews)
      # mpn902759784
      Cadillac Eldorado 1990, Valve Lifter by Melling®. Designed utilizing the latest technology, this product by Melling features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...
      Right for your vehicle and lifestyleMade from high-quality materials for ultimate durability
      $11.83
    • (0 reviews)
      # mpn1151265994
      Cadillac Eldorado 1990, First Design Valve Lifter by DNJ Engine Components®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and...
      Designed to replace your malfunctioning partsHelps get your vehicle back to its original performance
      $6.36
    • (0 reviews)
      # mpn4520071507
      Cadillac Eldorado 1990, Intake/Exhaust Push Rod by SBI®. Oversize: Standard. The S.B. International push rod specifications have been changed. Last listing required the use of "Graduated Checking Balls" when measuring drilled or cupped...
      Engineered with love for enginesMade for quiet and well-coordinated work of your engine
      $3.10
    • (0 reviews)
      # mpn4495802503
      Cadillac Eldorado 1990, Standard Piston Ring Set by Sealed Power®. Designed utilizing the latest technology, this product by Sealed Power features premium quality and will perform better than advertised. Perfect for your vehicle and...
      Direct replacementManufactured to strict engineering quality standards
      $75.62
    • (0 reviews)
      # mpn2400737518
      Cadillac Eldorado 1990, Camshaft Bearing Set by DNJ Engine Components®. Protect your engine part from contaminants and prolong its service life with this premium DNJ seal. Rigorously manufactured from top-grade materials and expertly...
      Designed to provide reliable sealing performanceProtects the engine part from contaminants and extends its life
      $29.15
    • (0 reviews)
      # 925977255
      Cadillac Eldorado 1990, Camshaft Bearing Set by Dura-Bond®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....
      Rigorously tested to withstand years of abuseHigh-grade materials for long-lasting durability
      $33.25 - $46.61
    • (0 reviews)
      # mpn45035545
      Cadillac Eldorado 1990, A-Series Aluminum Connecting Rod Bearing by Sealed Power®. Designed utilizing the latest technology, this product by Sealed Power features premium quality and will perform better than advertised. Perfect for your...
      Direct replacementManufactured to strict engineering quality standards
      $5.64
    • (0 reviews)
      # mpn62503244
      Cadillac Eldorado 1990, A-Series Aluminum Connecting Rod Bearing Set by Sealed Power®. Designed utilizing the latest technology, this product by Sealed Power features premium quality and will perform better than advertised. Perfect for...
      Direct replacementManufactured to strict engineering quality standards
      $42.76
    • (0 reviews)
      # mpn45037656
      Cadillac Eldorado 1990, A-Series Aluminum Flanged Crankshaft Main Bearing Set by Sealed Power®. Designed utilizing the latest technology, this product by Sealed Power features premium quality and will perform better than advertised....
      Direct replacementManufactured to strict engineering quality standards
      $54.65
    • (0 reviews)
      # mpn45034958
      Cadillac Eldorado 1990, Camshaft Bearing Set by Sealed Power®. Standard Size. Designed utilizing the latest technology, this product by Sealed Power features premium quality and will perform better than advertised. Perfect for your...
      Direct replacementManufactured to strict engineering quality standards
      $43.68
    • (0 reviews)
      # mpn2335585
      Cadillac Eldorado 1990, TECHoice™ Automatic Belt Tensioner by Dorman®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $34.15
    • (0 reviews)
      # 596189063
      Cadillac Eldorado 1990, TECHoice™ Idler Pulley by Dorman®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $10.59 - $11.29
    • (0 reviews)
      # mpn1804449
      Cadillac Eldorado 1990, DriveAlign™ OE Improved Smooth/Backside Steel Automatic Belt Tensioner by Gates®. Gates is a global leader in Original Equipment (OE) System Design. With a full line of tensioners and international...
      Manufactured using the same technology as Original Equipment Manufacturer (OEM) part, assuring a factory matchTorsional round spring design provides consistent tension and does not allow contamination
      $39.62
    • (0 reviews)
      # 441241803
      Cadillac Eldorado 1990, DriveAlign™ Smooth /Backside Steel Drive Belt Idler Pulley by Gates®. Built to last by resisting dirt, salt, and other under-hood contaminants and are designed for use on passenger cars and light trucks as a...
      High quality construction provides high durability for long life.Bearing meets or exceeds OE and is designed for application specific speed and load requirements.
      $13.45 - $14.19
    • (0 reviews)
      # mpn900735
      Cadillac Eldorado 1990, No Slack™ Automatic Belt Tensioner Assembly by Dayco®. Designed to maintain constant belt tension, this tensioner provides less variations in tension to prevent premature accessory bearing failure due to high...
      Maintains constant tension on serpentine belt drivesEliminates belt noise and reduces slippage
      $35.68
    • (0 reviews)
      # 596144883
      Cadillac Eldorado 1990, No Slack™ Light Duty Idler/Tensioner Pulley by Dayco®. Dayco's reputation for top performance idler and tensioner pulleys is a result of advanced automotive technologies employed in materials research, design...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $13.11 - $15.31
    • (0 reviews)
      # mpn898145111
      Cadillac Eldorado 1990, Professional™ Smooth /Backside Steel Idler Pulley by ACDelco®. The ACDelco Professional, premium aftermarket Idler Pulley is designed for use on automobiles and light duty trucks as a locked center tensioning...
      Bearing is designed for application specific speed and load requirementsProvides reliable operation under severe conditions for year round performance
      $18.17
    • (0 reviews)
      # mpn898145290
      Cadillac Eldorado 1990, Professional™ Steel Automatic Belt Tensioner and Pulley Assembly by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised....
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $41.24
    • (0 reviews)
      # 441248326
      Cadillac Eldorado 1990, Smooth Steel Drive Belt Idler Pulley with Back Idler Belt by Hayden®. This part is designed to route the drive belt and keep it tight. If the pulley goes bad, it can cause problems with cooling, charging,...
      Made out of steel and thermoplastic which provides longer life and superior dampeningPrevents belt slips which eliminates noise
      $9.42 - $10.08
    • (0 reviews)
      # 231945453
      Cadillac Eldorado 1990, Drive Belt Idler Pulley with Back Idler Belt by Four Seasons®. All products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of car parts experience, fix it once and...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $12.82 - $16.84
    • (0 reviews)
      # mpn2390611
      Cadillac Eldorado 1990, Smooth Drive Belt Tensioner Pulley by Four Seasons®. Increasing torque and performance with decreasing consumption and emissions. The development goals in engine construction determine the requirements of modern...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $16.36
    • (0 reviews)
      # mpn4517284769
      Cadillac Eldorado 1990, Drive Belt Idler Pulley by Cadna®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured...
      Unmatched combination of durability and functionalityExceptional quality at a competitive price
      $7.83
    • (0 reviews)
      # mpn4515039307
      Cadillac Eldorado without California Emission System 1990, Century Micro-V Ribbed Belt by Gates®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality,...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $34.27
    • (0 reviews)
      # 631527731
      Cadillac Eldorado 1990, Micro-V™ OE Performance Premium V-Ribbed Belt by Gates®. Gates Micro-V® belts represent over 100 years of evolution in the pursuit of excellence in Micro-V® technology. Gates history of innovation will launch...
      Belt of choice by professional technicians, lasting 50%-60% longer than value line beltsPrecise dimension control of rib profile transmits load efficiently throughout the ABDS allowing components to operate at optimum levels
      $17.09 - $24.29
    • (0 reviews)
      # 631905821
      Cadillac Eldorado 1990, Drive Rite™ V-Ribbed Serpentine Belt by Dayco®. Specially formulated high temperature Polymer along with the highest level of engineered reinforcement proves to perform better in belt operating temperature and...
      Faster and more consistent throttle response at high speedsQuicker throttle response at mid-speed acceleration
      $11.88 - $17.09
    • (0 reviews)
      # 1147761830
      Cadillac Eldorado 1990, Poly Rib™ Serpentine Belt by Dayco®. Location: Main Drive. When the transmission of power from both sides of the belt is required, choose this dual-sided serpentine belt specially constructed for multiple...
      Designed for power transmission on multiple-accessory drivesTransmits power from both sides of the belt
      $17.52 - $25.21
    • (0 reviews)
      # 631776793
      Cadillac Eldorado 1990, Poly Rib™ W-Profile Serpentine Belt by Dayco®. Compared to any other belt on the market, this belt provides better belt-to-pulley contact thus reducing slippage and noise thanks to its multiple rib W profile...
      Designed for power transmission on multiple-accessory drivesW Profile conforms to worn misaligned drives in older applications
      $11.24 - $16.00
    • (0 reviews)
      # 437585140
      Cadillac Eldorado 1990, Professional™ V-Ribbed Serpentine Belt by ACDelco®. Made of EPDM rubber for long life and quiet, dependable performance, ACDelco Professional Automotive Belts are designed to meet or exceed OEM performance...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $18.43 - $24.18
    • (0 reviews)
      # mpn4515038994
      Cadillac Eldorado without California Emission System 1990, Multi-Rib Serpentine Belt by Continental® ContiTech™. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $31.52
    • (0 reviews)
      # 631982811
      Cadillac Eldorado 1990, Main Precision Engineered V-Ribbed Serpentine Belt by Bando®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance...
      Highly efficient power transmissionFlexible, oil and heat resistant backing extends belt life
      $12.25 - $14.70
    • (0 reviews)
      # mpn771242654
      Cadillac Eldorado 1990, Professional™ OE Design Spin-On Oil Filter with Threaded Insert, Anti-Drain Back Valve by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $5.55
    • (0 reviews)
      # mpn771242649
      Cadillac Eldorado 1990, Professional™ OE Style Classic Design Spin-On Oil Filter with Threaded Insert, Anti-Drain Back Valve by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $5.33




    Guides & Articles

    Useful articles fast to read and guides easy to understand written by mechanics and car enthusiasts to turn your shopping experience with CARiD into a pleasure

    • Engine Parts
      May 21, 2018
      How To Remove An Engine
      If you've grown tired of your engine's declining performance, inconsistent power, rough idle, exhaust smoke, knocking noises, rattles, and other maladies that plague...
      by Richard Reina
    • Engine Parts
      May 09, 2018
      How Does An Internal Combustion Engine Work?
      An engine that uses liquid fuel to create energy, such as an internal combustion engine, is basically a large air pump. Cool air is drawn in, mixed with the fuel of...
      by Timothy Zahl
    • Replacement Engine Parts
      September 03, 2014
      Fan Belt? Alternator Belt? Serpentine Belt?...
      Look up "fan belt" in any modern automotive dictionary, and you'll typically find a definition that reads, "An endless belt used to transmit power from a...
      by Timothy Zahl
    • Ignition Parts
      August 10, 2014
      Auto Parts: Dealer vs. Aftermarket
      The question of whether to buy parts from an automotive dealer vs. ones from aftermarket manufacturers is as age-old as the automobile itself. Below, we'll take a look...
      by Timothy Zahl
    • Performance Engine Parts
      July 03, 2014
      Performing a Basic Engine Tune Up
      This article will guide you through a generic tune up on most any car or light duty gasoline-powered vehicle built within the last 20 years or so. We will presume that...
      by Timothy Zahl
    • Replacement Engine Parts
      May 09, 2014
      Timing Gears, Chains And Belts Keep Your...
      Does your ride have timing gears, a timing belt, or a timing chain? Is one better than the other? And perhaps most importantly, do I need to be concerned about the...
      by Timothy Zahl
    • Replacement Engine Parts
      December 25, 2013
      Glossary Of Engine Internal Parts
      Internal combustion engines are extremely complex and feature a wide array of components that rotate, move up and down, pump, seal, or remain stationary. When...
      by Michael Grayen

    Popular Products

    1990 Cadillac Eldorado Models


    Low Prices Price match guarantee
    In-House Experts We know our products
    Guaranteed Fitment Always the correct part
    Easy Returns Quick & Hassle Free

    All manufacturer names, symbols, and descriptions, used in our images and text are used solely for identification purposes only. It is neither inferred nor implied that any item sold by CARiD.com is a product authorized by or in any way connected with any vehicle manufacturers displayed on this page.

    SECURE SHOPPING