2003 Porsche Boxster Performance Parts

Show items:
Sort by:
    • (0 reviews)
      # 1119794069
      Porsche Boxster 3.2L Standard Transmission 2003, S-Type™ Stainless Steel Cat-Back Exhaust System with Dual Rear Exit by Borla®. Exhaust Type: Cat-Back. Exhaust Tubing Material: Stainless Steel. Main Tubing Diameter: 1.75". Exhaust...
      $849.99
    • (1 review)
      # 48037769
      Porsche Boxster with Cast Iron Rotors 2003, Redstuff Ceramic Low Dust Brake Pads by EBC®. This set of replacement ceramic brake pads offers OEM quality fit and operation with the superior stopping power, longer life, reduced brake fade,...
      $140.81 - $154.47
    • (0 reviews)
      # mpn2883278819
      Porsche Boxster 2003, Kontrol Pro Front and Rear Lowering Coilovers with 0.5"-2.5" Front and Rear Body Drop by KSport®. Quantity: Sold as a Kit. Ksport Kontrol Pro Fully Adjustable Coilover Kits provide the ultimate in suspension...
      $1,275.00
    • (0 reviews)
      # 377234864
      Porsche Boxster Roadster / Roadster S 2003, Magnum Force Super Stock Aluminum Black Cold Air Intake System with Pro 5R Filter by aFe®. The Super Stock Air Intake System is the easy and economical way to improve engine performance. It...
      Improves airflow to your engineIncreases horsepower and torque, improves performance
      $246.05
    • (0 reviews)
      # mpn4488941354
      Porsche Boxster 2003, My Genius™ Handheld Programmer by Naak Tuning®. 5%-10% Gains HP and TQ. This performance tune comes with a My Genius Handheld Programmer. Every performance tune is custom engineered from your vehicles stock tune...
      Ensures monitoring and tuning system of vehicle parametersProvides reliable service for decades to come
      $899.00
    • (0 reviews)
      # mpn4515298273
      Porsche Boxster 2003, Tunable Semi-Solid Engine Mount by Rennline®. The Rennline Tunable Engine Mount for your cars offers the ultimate in adjustability for your car. Replacing your compliant factory mounts will decrease engine movement...
      Made from premium materials to endure years of abuseDesigned for perfect fit and function
      $350.00
    • (0 reviews)
      # mpn4530972488
      Porsche Boxster 2003, Low Temperature Thermostat by LN Engineering®. Temperature: 71 Degree. To keep your engine cool and improve your vehicle's performance, this product is just the right solution. Manufactured from high-quality...
      Ensure smooth, reliable operation and long-lasting serviceDesigned to unlock more performance out of your vehicle
      $117.20
    • (0 reviews)
      # 103976612
      Porsche Boxster Standard Transmission 2003, Stage 1 Clutch Kit by SPEC®. Does not Include: Flywheel. Features an integrally molded carbon kevlar-based, high performance organic lining that offers smooth engagement and excellent life....
      High clamp pressure plateSteel-backed and multi-compound woven organic material
      $612.90 - $632.70
    • (0 reviews)
      # 1078558942
      Silver EFI Fuel Tank System by Sniper®. Enjoy superior performance by getting this premium-grade Sniper product that is throughly engineered to help take the performance of your fuel system to the next step delivering unprecedented...
      Perfect for upgrading your fuel injection systemMade with the use of the highest quality materials
      $549.95 - $629.95
    • (0 reviews)
      # mpn3740157652
      Porsche Boxster 2003, Double Platinum Spark Plug by Autolite®. OE Style. Thanks to their platinum-to-platinum firing, these spark plugs virtually eliminate gap erosion, reduce misfires, and provide improved durability and prolonged...
      Ensure improved durabilityProvide accurate firing for DIS engines
      $5.43
    • (0 reviews)
      # mpn3800683945
      Porsche Boxster 2003, Front Outer Straight Tie Rod End by Proforged®. Quantity: 1 per Pack. Proforged applied the same technological advancements in ball joint construction to their line of Tie Rod Ends and Rack Ends, delivering a...
      SAE1045 forged steeling housingsBall studs forged from ultra-strong SAE4140 chromoly steel
      $37.66
    • (0 reviews)
      # 1120482988
      Porsche Boxster 2003, Battery Mount Kit by Rennline®.
      Made from premium materials to endure years of abuseDesigned for perfect fit and function
      $135.00 - $145.00
    • (0 reviews)
      # 1029275594
      Differential Master Overhaul Kit by Yukon Gear & Axle®. Yukon Master Overhaul kits give you all the high quality parts you need to start and finish every differential job. Yukon offers more tailor-made kits than any other manufacturer...
      Most complete kits on the marketComplete overhaul package to rebuild differential
      $238.58 - $394.70
    • (0 reviews)
      # 48222560
      Club X-1 Full Face ATM (Advance Thermo Material) Racing Helmet by Sparco®. Certification: ECE 05; Material: ATM (Advance Thermo Material) Designed for indoor kart racing where a fire proof helmet isn't required, this product is...
      Designed for indoor kart racingProvides ultimate protection
      $140.00
    • (0 reviews)
      # 450479564
      Universal PowerPack™ Turbocharger System by Banks®. The Banks Power Dual Exhaust PowerPack System is the complete towing package your pickup truck, with extended cab short bed configuration, deserves.
      Stunning Top GainsImproved Mileage
      $2,198.00 - $2,798.00
    • (0 reviews)
      # mpn4493730176
      Porsche Boxster S 2003, Stainless Steel Cat-Back Exhaust System with Split Rear Exit by J2 Engineering®. Exhaust Type: Cat-Back. Exhaust Tubing Material: Stainless Steel. Main Tubing Diameter: 1.75". Exhaust System Sound: Aggressive /...
      $500.00
    • (0 reviews)
      # 59079080
      Porsche Boxster Roadster S 2003, Performance Slotted Brake Kit by StopTech®. They feature fully forged calipers with patented stiffening bridges, patented 2-piece AeroRotors for optimized cooling, braided stainless steel brake lines,...
      +2
      $2,335.50 - $3,145.50
    • (0 reviews)
      # 40510282
      Porsche Boxster Roadster / Roadster S 2003, B8 Series Sport Driver or Passenger Side Twin-Tube Strut by Bilstein®. Quantity: 1 per Pack. If you’re looking for a performance lowering shock absorber or strut, the BILSTEIN B8 Sport...
      $245.93 - $258.52
    • (0 reviews)
      # mpn4488951185
      Porsche Boxster 986 Body Code 2003, V-Flow Cold Air Intake System by Fabspeed®. Direct replacement for the factory air box that utilizes the OEM "ram air" fresh air ducts for lower intake temperatures and added power. Constructed of...
      Increases power for improved throttle responseHigh performance cotton filter is washable and re-oilable
      $395.00
    • (0 reviews)
      # mpn4545177966
      Porsche Boxster 2003, ECU Handheld Tuner by Fabspeed®. Acheive maximum power without sacrificing drivability or reliability by optimizing the engine's air/fuel ratios, timing, and more. Get this top-of-the-line product thoroughly...
      While a vehicle equipped with bolt-on upgrades will experience maximum gains as a result of the increased efficiency of the engine, great power gains can be made on a completely stock vehicle!This is not a physical/shipped product. This upgrade requires you to send us your ECU for re-programming. You will be emailed a download link with detailed instructions after adding this to your cart and checking out.
      $895.00
    • (0 reviews)
      # mpn1961769
      Porsche Boxster 2003, Pro Series Automotive Cartridge Oil Filter by K&N®. K&N Pro Series Oil Filters have been specially designed for professional installers and service providers. Their high flow design can help to improve engine...
      High flow filter designed to improve performanceDesigned for synthetic and conventional oils
      $7.63
    • (0 reviews)
      # 1015328535
      Porsche Boxster 986 Body Code 2003, High Performance Radiator by CSF®. Direct Fit. Each CSF high quality radiator is completed with an industry leading 1 hour, hand polished "Show-Stopper™ mirror finish." Hand polishing tools and...
      CAD/CAM designed using Unigraphics™ SoftwareOE radial and deep drawn aluminum endtanks
      $429.00 - $449.00
    • (0 reviews)
      # mpn458193382
      Porsche Boxster 2003, Billet Trasnmission Mount Kit by Torque Solution®. Material: Aluminum. Torque Solution Solid Billet Transmission Mount is the perfect complement for the serious enthusiast that demands the most from their vehicle....
      Reduces Engine MovementMade out of lightweight 6061-T6 Billet Aluminum
      $356.99
    • (0 reviews)
      # 321379421
      Off-Road Truck Avenger Carburetor by Holley®. The Off-Road Truck Avenger is designed specifically for off-road applications. The unique fuel metering block eliminates fuel spillover through the boosters at extreme angles allowing for 40...
      Single feed fuel inlet for ease of installationOptimized off-road calibration that works out-of-the-box
      $462.95 - $515.95
    • (0 reviews)
      # mpn4511855772
      Porsche Boxster 2003, Iridium Spark Plugs by Autolite®. These spark plugs are one of the brand's most technologically advanced spark plugs ever. With an iridium-enhanced 0.6 mm finewire design and proprietary platinum sidewire...
      Iridium-enhanced center electrodePatented, platinum sidewire technology
      $6.48
    • (0 reviews)
      # mpn4493947274
      Porsche Boxster 2003, Tie Rod Ends by Megan Racing®. Quantity: 2 Pieces.
      $122.28
    • (0 reviews)
      # 985154426
      Universal Advanced Lightweight 12V AGM Battery by Braille Battery®. Battery Type: AGM. Voltage: 12V. Batteries have always presented the same problems of weight, safety, and cost. In racing, aerospace, and advanced technology...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $149.99 - $229.99
    • (0 reviews)
      # 976617070
      TorqueWorm™ Limited Slip Differential by Speedmaster®. Designed utilizing the latest technology, this product by Speedmaster features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $334.80 - $495.00
    • (0 reviews)
      # 69025922
      110 Series Single Layer Racing Suit by RaceQuip®. Avaliable in Colors: Black, Blue, Red. Get superior durability and comfort combined with overall flame and heat protection. Strong construction and advanced sewing techniques make this...
      Ensures heat and fire protectionGentle fabric provides superior comfort
      $99.95 - $139.95
    • (0 reviews)
      # 1119782867
      Porsche Boxster 986 Body Code 2003, Supercup Exhaust System with Dual Rear Exit by Fabspeed®. With Two resonators to minimize weight and improve top end power. Exhaust System Sound: Aggressive / Loud. Loud and aggressive performance...
      $1,495.00




    CARiD is the ultimate source for premium-quality performance parts. With our extensive collection of performance upgrades, adding onto your vehicle's performance or improving its look is safe and easy. Boost the interior of your 2003 Porsche Boxster with a set of racing seats, raise or lower your vehicle for an aggressive look, or add a set of high-performance brake rotors for superior braking. Unlock the hidden potential of your 2003 Porsche Boxster that has been waiting to be released!

    Don't just Stop
    Solves the toughest brake challenges
    WATCH VIDEOS

    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

    • Performance Brakes, Pads & Rotors
      August 10, 2018
      When Is It Time To Replace My Brake Lines?
      Hydraulic brake lines and hoses aren’t something most people think about when it comes to vehicle maintenance. That’s understandable, considering automakers...
      by Michael Grayen
    • Performance Brakes, Pads & Rotors
      August 09, 2018
      When Is It Time To Replace My Brake Calipers?
      Brake calipers, found only on disc brake systems, house pistons which use the force of hydraulic brake fluid to stop the vehicle. More specifically, those pistons...
      by Timothy Zahl
    • Suspension
      August 08, 2018
      When Is It Time To Replace My Vehicle's Springs?
      The springs on your vehicle are an integral part of its suspension system. Not only do springs keep all four corners suspended at a pre-determined, level ride height,...
      by Richard Reina
    • Suspension
      July 11, 2018
      When Is It Time To Replace My Suspension Bushings?
      Maybe you remember being pushed along in a wheelbarrow during childhood. The ride was bone-jarring - even with an air-filled rubber tire cushioning against the rough...
      by Timothy Zahl
    • Engines
      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
    • Engines
      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
    • Engines
      May 02, 2018
      Glossary Of Engine External Parts
      Internal combustion engines are extremely complex and feature a wide array of components that rotate, pump, pressurize, or seal. Many of these components, while...
      by Timothy Zahl
    • Performance Engine Parts
      April 20, 2018
      What You Need When Rebuilding Or Replacing An...
      So you’ve decided to take on the project of rebuilding or replacing your vehicle’s engine. Modern internal combustion engines are quite complex – with a wide...
      by Richard Reina
    • Shift Knobs
      January 19, 2018
      Shopping Guide – Shift Knobs
      The knob at the end of your gearshift lever probably isn't something that most people notice when getting into your car or truck. But for a minimal cost, it can be. We...
      by Timothy Zahl
    • Running Boards
      November 29, 2017
      Shopping Guide - Running Boards
      Running boards date as far back as the automobile itself, being integrated into car and truck designs until falling out of favor after World War II. With the boom in...
      by Timothy Zahl
    • Off-Road Bumpers
      November 28, 2017
      Shopping Guide – Off Road Bumpers | Custom...
      There's a saying that advises out of all the paths you take in life, it's important to make sure a few of them are dirt. But while dirt can be found most anywhere you...
      by Timothy Zahl
    • Automotive Tools
      August 30, 2017
      What Special Tools Are Available For Exhaust...
      Exhaust work can be challenging. Old parts are usually corroded and difficult to separate, and new ones sometimes need minor fitment adjustments during installation....
      by Timothy Zahl

    2003 Porsche Boxster Performance Parts Reviews

    Average rating:  4  4 - 2 reviews
    3.5 of 5
    It Was To Small
    It was to small had to take it get fitted and cut down.
    Posted by Charles Barber (Cape Girardeau, MO) / March 13, 20182007 Chevy Avalanche
    Was this review helpful for you? Yes
    View More
    2003 Porsche Boxster 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