1991 Cadillac Seville Performance Exhaust Systems

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    • (0 reviews)
      # mpn1116021
      Cadillac Seville With PRE-OBDII Models 1991, Pre-OBDII Catalytic Converter by MagnaFlow®. Emissions: CARB compliant. Converter Configuration: Direct Fit. With Gasket and Assembly. Without Air Tube. Without O2 Sensor Port. Catalytic...
      Increases exhaust flow compared to original factory converterIncreased exhaust flow allows your engine to make more power
      $316.01
    • (0 reviews)
      # mpn1120818
      Cadillac Seville 1991, Standard Catalytic Converter by MagnaFlow®. Emissions: EPA compliant. Converter Configuration: Direct Fit. With Gasket. Without Air Tube. With Pre and Post-Cat O2 Sensor Ports. Catalytic Inlet Diameter: 3"....
      Converter body manufactured from heavy-duty stainless steelIncreases exhaust flow compared to original factory converter
      $177.20
    • (0 reviews)
      # mpn1038322
      Cadillac Seville 1991, Standard Catalytic Converter by MagnaFlow®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Oval. Without Air Tube. Without O2 Sensor Port. Catalytic Inlet...
      Reduces harmful emissionsIncreases exhaust flow compared to original factory converter
      $77.88
    • (0 reviews)
      # mpn1073833
      Cadillac Seville With PRE-OBDII Models 1991, Pre-OBDII Catalytic Converter by MagnaFlow®. Emissions: CARB compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Oval. Without Air Tube. Without O2 Sensor...
      Reduces harmful emissionsIncreases exhaust flow compared to original factory converter
      $184.75
    • (0 reviews)
      # 404573091
      Cadillac Seville 1991, Replacement Exhaust Kit by Walker®. If you are looking for the ultimate in quality and value, then this superior replacement exhaust kit by Walker is what you need. All its components are designed with...
      Direct fit replacementIncludes all applicable flanges, hangers, and sensor fittings
      $29.92 - $124.98
    • (0 reviews)
      # 165400772
      Cadillac Seville 1991, Replacement Exhaust Kit by AP Exhaust®. Get confidence with this high-standard OE quality purchase which is perfect for those who want to perform a long-lasting exhaust system repair. Made from top-notch...
      Superior replacement for your worn out exhaust partHelps put your vehicle back to its tip-top shape
      $31.17 - $148.85
    • (0 reviews)
      # mpn2072725834
      Cadillac Seville 1991, Driver Side Cast Iron Natural Exhaust Manifold by Dorman®. Location: Driver Side. Finish: Natural. Includes: Exhaust Manifold, 1 Manifold Gasket, 1 Flange Gasket, 2 Studs. More like a complete kit than a...
      High Quality tubular construction protects against warping and/or crackingLeak-resistant for long-lasting performance
      $337.95
    • (0 reviews)
      # mpn1635631
      Cadillac Seville 1991, Ultra™ Catalytic Converter by Walker®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Large Oval. With 1 Inlet. With Air Tube. Without O2 Sensor Port....
      Emission, Structural Warranty: 5 Years / 50,000 Miles (80,000 Kilometers)Comply with specific pre-OBDII and OBDII requirements in the state of California
      $67.44
    • (0 reviews)
      # mpn2888398727
      Cadillac Seville 1991, CalCat™ Catalytic Converter by Walker®. Emissions: CARB compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Oval. With 1 Inlet. Without O2 Sensor Port. Catalytic Converter...
      Constructed to meet your vehicle’s specific emissions requirementsFeatures stainless steel body with aluminized steel pipe and heat shields
      $101.81
    • (0 reviews)
      # mpn1844732
      Cadillac Seville 1991, Ultra™ Catalytic Converter by Walker®. Emissions: EPA compliant. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Large Oval. With 1 Inlet. Without O2 Sensor Port. Catalytic Converter...
      Emission Warranty: 25,000 Miles (40,000 Kilometers)Structural Warranty: 5 Years / 50,000 Miles (80,000 Kilometers)
      $124.98
    • (0 reviews)
      # mpn971249
      Cadillac Seville 1991, Catalytic Converter by Bosal®. Emissions: EPA compliant. Converter Configuration: Direct Fit. If you’re in need of a replacement catalytic converter, you can’t do better than Bosal. They’re a leading...
      Constructed to meet your vehicle’s specific emissions requirementsRadial flow concept allows for an even distribution of the gas flow in the converter for the optimal conversion of harmful gases
      $138.80
    • (0 reviews)
      # mpn1249685
      Cadillac Seville 1991, Standard Catalytic Converter by Eastern®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Position: Undercar. Catalytic Converter Body Shape: Oval. With Air Tube. Without O2 Sensor Ports....
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $51.80
    • (0 reviews)
      # mpn1206811
      Cadillac Seville With PC-1 Pre OBDII Weight Class 1991, ECO CARB Catalytic Converter by Eastern®. Emissions: CARB compliant. Converter Configuration: Universal Fit. Position: Center. Catalytic Converter Body Shape: Round. Catalytic...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $172.21
    • (0 reviews)
      # mpn1253011
      Cadillac Seville 1991, Standard Catalytic Converter by Eastern®. Emissions: EPA compliant. Converter Configuration: Direct Fit. Position: Undercar. Without O2 Sensor Ports. Catalytic Inlet Diameter: 3.7". Catalytic Outlet Diameter:...
      Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
      $137.03
    • (0 reviews)
      # mpn474117262
      Cadillac Seville 1991, Standard Duty Catalytic Converter by AP Exhaust®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Oval. With Single Air Tube. Without O2 Sensor Port....
      Manufactured from high quality materialsDesign meet needs of OBDII equipped vehicles
      $52.49
    • (0 reviews)
      # 80127000
      Cadillac Seville 1991, Catalytic Converter by AP Exhaust®. Emissions: EPA compliant. Converter Configuration: Direct Fit. Without Air Tube. Catalytic Converter Overall Length: 23.5". The growing concern for the environment means...
      Manufactured from high quality materialsDesign meet needs of OBDII equipped vehicles
      $137.24 - $148.85
    • (0 reviews)
      # mpn1878745
      Cadillac Seville 1991, SoundFX™ Stainless Steel Oval Direct-Fit Aluminized Exhaust Muffler by Walker®. Optional. Muffler Inlet Diameter: 2.5". Muffler Outlet Diameter: 2.25". Muffler Body Length: 21". Muffler Overall Length: 24"....
      Designed to deliver ultimate performance and pleasing sound qualityOE-equivalent direct-fit design
      $30.49
    • (0 reviews)
      # mpn1762487
      Cadillac Seville 1991, SoundFX™ Stainless Steel Oval Aluminized Exhaust Muffler by Walker®. Optional. Muffler Inlet Diameter: 2.5". Muffler Outlet Diameter: 2.25". Muffler Body Length: 21". Muffler Overall Length: 26". Muffler...
      Designed to deliver ultimate performance and pleasing sound qualityMay require a few modifications to install
      $27.32
    • (0 reviews)
      # mpn1888580
      Cadillac Seville 1991, Aluminized Steel Exhaust Tailpipe by Walker®. Material: Aluminized Steel. If you want exhaust piping that delivers precise OE-style fit, appearance, and reliability, this part is your number one choice. Every...
      Designed to directly replace the factory partMade with precision benders and fixture checked
      $29.92
    • (0 reviews)
      # 467318293
      Cadillac Seville 1991, Intermediate Pipe by Walker®. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust job. When you choose...
      Made of High Quality Aluminized SteelCorrosion Resistant
      $32.42 - $56.11
    • (0 reviews)
      # mpn914885592
      Cadillac Seville With California Emission 1991, GM Original Equipment™ Oxygen Sensor by ACDelco®. Position: Upstream. Location: In Exhaust Manifold/Crossover. If your O2 sensor is not functioning properly, you are robbing...
      ACDelco GM OE Oxygen Sensors earn the name ACDelco by being put through a variety of tests, often under extreme and unusual conditions.Detects oxygen content in the exhaust gases.
      $58.06
    • (0 reviews)
      # mpn2471209
      Cadillac Seville 1991, Oxygen Sensor by Delphi®. Position: Upstream. As one of the leading suppliers of oxygen sensor technology since 1978, Delphi planar technology is the result of their OE and aftermarket engineers partnering...
      OE connectors and wire lengths within three inches of OE specificationsResists high temperatures, vibration damage and wire corrosion to protect signal accuracy, and long life
      $15.50
    • (0 reviews)
      # mpn44307702
      Cadillac Seville 1991, Oxygen Sensor by Standard®. Contens: Oxygen Sensor. Position: Upstream. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products,...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $22.31
    • (0 reviews)
      # mpn1141157
      Cadillac Seville 1991, Premium Oxygen Sensor by Bosch®. Position: Upstream. A worn-out oxygen sensor can cause engine performance problems and shorten the life of the catalytic converter. Tune-up your vehicle with an Oxygen Sensor...
      Up to 15 % savings in fuel costsReduced CO2 emissions
      $14.47
    • (0 reviews)
      # 311825466
      Cadillac Seville 1991, Oxygen Sensor by Denso®. Position: Upstream. Denso's light duty oxygen sensor started to appear on vehicles with the development of fuel injection systems. The basic job of the sensor is to monitor the air...
      Corrosion-resistant stainless steel constructionPTFE filter blocks efficiency-robbing contaminants
      $16.71 - $19.92
    • (0 reviews)
      # 22133947
      Cadillac Seville 1991, Oxygen Sensor by NTK®. Thimble Type Sensors Feature a Ceramic Element that Projects into the Exhaust System and Becomes Electrically Conductive at High Temperature. The Sensor Element then Sends Voltage...
      Increases vehicle fuel economy and engine performance while decreasing vehicle exhaust emissionsDirect replacement
      $19.46
    • (0 reviews)
      # mpn3368455862
      Cadillac Seville 1991, Oxygen Sensor by Spectra Premium®. Position: Upstream. To ensure your vehicle has optimal performance and fuel economy while producing minimal emissions replace a defective O2 sensor with one backed by the...
      Increase vehicle fuel economy and engine performance while decreasing vehicle exhaust emissions100% performance tested to meet vehicle requirements
      $15.48
    • (0 reviews)
      # mpn1853621
      Cadillac Seville 1991, Bracket by Walker®. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust job. When you choose Walker...
      Makes installation quick and easyOptimal OE-style fit and quality
      $5.08
    • (0 reviews)
      # mpn474125180
      Cadillac Seville 1991, Extra Heavy Duty Welded Saddle Natural Exhaust Clamp by AP Exhaust®. This superior product was carefully designed with key attention to detail and manufactured from high-grade materials to the strict...
      Made from first-rate materialsEnsures outstanding durability
      $7.46
    • (0 reviews)
      # mpn1522783
      Cadillac Seville 1991, Exhaust Manifold Gasket Set by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering resources, the...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $6.06
    • (0 reviews)
      # 24067121
      Cadillac Seville 1991, Exhaust Seal Ring by Victor Reinz®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...
      High quality at an affordable priceExpertly made from premium materials
      $11.01 - $14.31
    • (0 reviews)
      # mpn2400735302
      Cadillac Seville 1991, Exhaust Manifold Gasket Set by DNJ Engine Components®. Get this top-grade quality replacement for your worn out part from DNJ. Expertly crafted from premium materials, this product is of the finest quality to...
      Designed to restore your vehicle's original performanceProvides superior sealing performance
      $4.54
    • (0 reviews)
      # mpn1861391
      Cadillac Seville 1991, Graphoil Donut Exhaust Gasket by Walker®. Material: Graphoil. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the...
      Makes installation quick and easyOptimal OE-style fit and quality
      $8.43
    • (0 reviews)
      # mpn981263
      Cadillac Seville 1991, Exhaust Flange Gasket by Bosal®. Bosal has a vast selection of all necessary accessories and hardware to help you make the exhaust system installation or repair job quick and easy. Choose Bosal, and you'll...
      Constructed for a hassle-free exhaust repairEnsures a precise fit
      $6.47
    • (0 reviews)
      # mpn1526288
      Cadillac Seville 1991, Exhaust Pipe Flange Gasket by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering resources, the...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $8.88
    • (0 reviews)
      # mpn4225317540
      Cadillac Seville 1991, Exhaust Bolt and Spring by Fel-Pro®. If you are looking for quality sealing solutions, Fel-Pro offers you various replacement products from seals and bolts to O-Rings and dowel pins. Engineered using the...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $6.77
    • (0 reviews)
      # 285612371
      Universal 304 SS Chambered Round Mill Exhaust Muffler by Stainless Works®. Muffler Body Length: 30". Muffler Sound: Aggressive / Loud. Muffler Configuration: Center - Center. Stainless Works is the only manufacturer to build all of...
      Designed to meet strict quality standardsCarefully crafted from first-rate stainless steel
      $166.25
    • (1 review)
      # 285612447
      Universal Smooth 304 SS Oval Mill Exhaust Muffler by Stainless Works®. Muffler Body Length: 24". Muffler Sound: Moderate. Muffler Configuration: Center - Center. Stainless Works is the only manufacturer to build all of our mufflers...
      Designed to meet strict quality standardsCarefully crafted from first-rate stainless steel
      $171.00
    • (0 reviews)
      # 285612487
      Universal 304 SS Turbo Chambered Exhaust Muffler by Stainless Works®. Muffler Body Length: 14". Muffler Overall Length: 18". Muffler Sound: Aggressive / Loud. Stainless Works is the only manufacturer to build all of our mufflers...
      Designed to meet strict quality standardsCarefully crafted from first-rate stainless steel
      $175.75
    • (0 reviews)
      # 285612569
      Universal 304 SS Round Vintage Mill Exhaust Muffler by Stainless Works®. Muffler Sound: Aggressive / Loud. Stainless Works is the only manufacturer to build all of our mufflers with ALL s/s construction-the bodies, cores, and...
      Designed to meet strict quality standardsCarefully crafted from first-rate stainless steel
      $147.25
    • (0 reviews)
      # 285612558
      Universal 304 SS Turn Down Mill Exhaust Muffler by Stainless Works®. Muffler Body Length: 24". Muffler Sound: Aggressive / Loud. Stainless Works is the only manufacturer to build all of our mufflers with ALL s/s construction-the...
      Designed to meet strict quality standardsCarefully crafted from first-rate stainless steel
      $147.25
    • (0 reviews)
      # 360335633
      Universal 304 SS Round Mill Exhaust Muffler by Stainless Works®. Muffler Overall Length: 5". Muffler Configuration: Center - Center. Stainless Works is the only manufacturer to build all of our mufflers with ALL s/s...
      Designed to meet strict quality standardsCarefully crafted from first-rate stainless steel
      $118.75 - $157.70
    • (0 reviews)
      # 285612429
      Universal 304 SS Rat Trap Mill Exhaust Muffler by Stainless Works®. Muffler Body Length: 24". Muffler Sound: Aggressive / Loud. Muffler Configuration: Center - Center. Stainless Works is the only manufacturer to build all of our...
      Designed to meet strict quality standardsCarefully crafted from first-rate stainless steel
      $147.25
    • (0 reviews)
      # 285612455
      Universal 304 SS Smooth Tube Mill Exhaust Muffler by Stainless Works®. Muffler Body Length: 24". Muffler Sound: Moderate. Muffler Configuration: Center - Center. Stainless Works is the only manufacturer to build all of our mufflers...
      Designed to meet strict quality standardsCarefully crafted from first-rate stainless steel
      $152.00
    • (0 reviews)
      # 285612526
      Universal 304 SS Turbo S-Tube Exhaust Muffler by Stainless Works®. Muffler Body Length: 14". Muffler Overall Length: 18". Muffler Sound: Aggressive / Loud. Muffler Structure: Turbo. Stainless Works is the only manufacturer to build...
      Designed to meet strict quality standardsCarefully crafted from first-rate stainless steel
      $175.75
    • (0 reviews)
      # 91560812
      Universal Chrome Low-Line Lake Pipes by Patriot Exhaust®. Main Tubing Diameter: 2". Great for bringing back the custom car look some popular in the 50's and 60's. This product is made of high-quality materials to serve you for...
      The look of an expensive tuned header side pipe at a fraction of the costSide pipes come with built-in six sided louvered cored mufflers which absorb sound not horsepower
      $221.19 - $316.46
    • (0 reviews)
      # 381402860
      Universal Mild Steel Chrome Shielded Side Exhaust System by Patriot Exhaust®. Exhaust Tubing Material: Mild Steel. Main Tubing Diameter: 2". Give your vehicle that custom look with our classic shielded side exhaust system. Large...
      Give your vehicle that custom look with our classic shielded side exhaust system with a show quality chrome finishLarge inlet and outlet pipes with low back pressure six-sided louvered core mufflers
      $262.33 - $364.13
    • (0 reviews)
      # 389793730
      Universal Chrome Plated Lake Pipes by Patriot Exhaust®. Main Tubing Diameter: 3.5". Show quality chrome Lake Pipe 4 kits connect to headers or stock exhaust system with one functioning inlet tube and three dress-up tubes. A great...
      The look of an expensive tuned header side pipe at a fraction of the costSide pipes come with built-in six sided louvered cored mufflers which absorb sound not horsepower
      $347.76 - $476.42
    • (0 reviews)
      # 286167515
      Universal 3589 Series Pre-OBDII Catalytic Converter by Flowmaster®. Emissions: CARB compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. The new Flowmaster replacement...
      Exceed all federal emission standardsEngineered for Maximum Efficiency
      $218.19 - $343.62
    • (2 reviews)
      # 286167488
      Universal 282 Series Catalytic Converter by Flowmaster®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Without Air Tube. The new Flowmaster replacement catalytic converters are made to meet and exceed all...
      Exceed all federal emission standardsStainless Steel shells
      $112.10 - $171.00
    • (0 reviews)
      # 286167476
      Universal 223 Series Catalytic Converter by Flowmaster®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. Without O2 Sensor Port. Without Heat Shield. The...
      Exceed all federal emission standardsStainless Steel shells
      $73.86
    • (0 reviews)
      # 286167537
      Universal 3940 Series OBDII Catalytic Converter by Flowmaster®. Emissions: CARB compliant. Converter Configuration: Universal Fit. Without Air Tube. The new Flowmaster replacement catalytic converters are made to meet and exceed...
      Exceed all federal emission standardsEngineered for Maximum Efficiency
      $229.41 - $294.68
    • (0 reviews)
      # 286167526
      Universal 3612 Series Catalytic Converter by Flowmaster®. Emissions: CARB compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Oval. Without Air Tube. Catalytic Converter Overall Length: 12.25". The...
      Exceed all federal emission standardsEngineered for Maximum Efficiency
      $155.44 - $197.02
    • (2 reviews)
      # 286167469
      Universal 220 Series Catalytic Converter by Flowmaster®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Oval. With Air Tube. Without O2 Sensor Port. The new Flowmaster replacement...
      Exceed all federal emission standardsStainless Steel shells
      $68.56
    • (0 reviews)
      # mpn918029
      Universal 3588 Series Pre-OBDII Catalytic Converter by Flowmaster®. Emissions: CARB compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. Catalytic Inlet Diameter: 3". Catalytic...
      Exceed all federal emission standardsEngineered for Maximum Efficiency
      $197.80
    • (0 reviews)
      # 286167532
      Universal 3912 Series OBDII Catalytic Converter by Flowmaster®. Emissions: CARB compliant. Converter Configuration: Universal Fit. Without Air Tube. The new Flowmaster replacement catalytic converters are made to meet and exceed...
      Exceed all federal emission standardsEngineered for Maximum Efficiency
      $215.14 - $269.17
    • (1 review)
      # 286167509
      Universal 290 Series Catalytic Converter by Flowmaster®. Emissions: EPA compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Oval. Without Air Tube. The new Flowmaster replacement catalytic converters...
      Exceed all federal emission standardsStainless Steel shells
      $108.66 - $128.44
    • (0 reviews)
      # 286167544
      Universal 3998 Series Pre-OBDII Catalytic Converter by Flowmaster®. Emissions: CARB compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. Catalytic Converter Overall Length:...
      Exceed all federal emission standardsEngineered for Maximum Efficiency
      $190.67
    • (0 reviews)
      # mpn918025
      Universal 3512 Series OBDII Catalytic Converter by Flowmaster®. Emissions: CARB compliant. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Oval. Without Air Tube. Catalytic Inlet Diameter: 2.5". Catalytic...
      Exceed all federal emission standardsEngineered for Maximum Efficiency
      $173.26
    • (0 reviews)
      # 380751231
      Universal OBDII Catalytic Converter by Flowmaster®. Emissions: CARB compliant. Converter Configuration: Universal Fit. The new Flowmaster replacement catalytic converters are made to meet and exceed all federal environmental...
      Exceed all federal emission standardsEngineered for Maximum Efficiency
      $169.44 - $264.20




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