Buick Rainier Emission Control Parts
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MagnaFlow®Direct Fit Catalytic ConverterDirect Fit Catalytic Converter by MagnaFlow®. If your cat needs replacement, install one that will get you through the smog check. The Direct Fit Catalytic Converter is available in Pre-OBD II, OBD II, and OEM Grade OBD II configurations.$143.00 - $5,871.00 - MagnaFlow®Universal Fit Catalytic ConverterUniversal Fit Catalytic Converter by MagnaFlow®. If your car needs replacement, install one that will get you through the smog check. This universal fit converter will require some fabrication to be installed, which will involve cutting...$83.00 - $1,906.00
- CATCO®Catalytic Converter and Pipe AssemblyCatalytic Converter and Pipe Assembly by CATCO®. Designed and manufactured with innovative fabrication methods, high-tech materials, and advanced coating, this converter leapfrogs the competition. It delivers unparalleled performance...Packed with the latest technological advancementsWill surpass your expectations for performance$117.42 - $1,552.56
- Davico®Catalytic Converter and Pipe AssemblyCatalytic Converter and Pipe Assembly by Davico®. This direct-fit catalytic converter by Davico will be a great solution to replace your failed or damaged catalytic converter. Once your stock cat fails to perform its job, replacement is...Helps your vehicle emit harmless gasesDirect OEM replacement$64.26 - $4,001.73
- MagnaFlow®OEM Grade Direct Fit Catalytic ConverterOEM Grade Direct Fit Catalytic Converter by MagnaFlow®. If your car needs replacement, install one that will get you through the smog check. This converter is part of the exhaust header/manifold assembly, and it will directly replace...$214.00 - $2,612.00
- Walker®Universal Fit Catalytic ConverterUniversal Fit Catalytic Converter by Walker®. Walker offers complete coverage: direct-fit mufflers, converters, pipes, resonators and accessories. Walker is an OE supplier to many major nameplate vehicle manufacturers. Trust Walker, an...EPA & CARB Emissions Products Available for Most VehiclesEmission, Structural Warranty: 5 Years / 50,000 Miles (80,000 Kilometers)$139.79 - $2,722.16
- AP Exhaust®Catalytic ConverterCatalytic Converter by AP Exhaust®. Today’s exhaust performance market continues to cover a broad spectrum of vehicles. The unique nature of this market is that a product demand is not based on vehicle age or use but instead on an...Provides professional installer with immediate installation optionsSpecifically engineered for OBDII equipped vehicles$80.78 - $1,065.65
- iD Select®ECO II Universal Fit Catalytic ConverterECO II Universal Fit Catalytic Converter by iD Select®. Swap out your worn-out or malfunctioning part with this top-notch exhaust product from iD Select. It’s built to OEM specifications to offer the same fit, form, and function...Direct OEM replacement for your malfunctioning exhaust partMade to deliver the ultimate in quality, reliability, and value$112.08 - $146.77
- Davico®Exhaust Manifold with Integrated Catalytic ConverterExhaust Manifold with Integrated Catalytic Converter by Davico®. This product by Davico will be a great solution to replace your failed or damaged Exhaust Manifold with Integrated Catalytic Converter. Once your stock cat fails to...Helps your vehicle emit harmless gasesDirect OEM replacement$31.58 - $1,311.27
- iD Select®ECO II Direct Fit Catalytic Converter and Pipe AssemblyECO II Direct Fit Catalytic Converter and Pipe Assembly by iD Select®. Swap out your worn-out or malfunctioning part with this top-notch exhaust product from iD Select. It’s built to OEM specifications to offer the same fit, form,...Direct OEM replacement for your malfunctioning exhaust partMade to deliver the ultimate in quality, reliability, and value$229.47 - $1,288.43
- Eastern Catalytic®ECO III Direct Fit Converter and Pipe AssemblyECO III Direct Fit Converter and Pipe Assembly by Eastern Catalytic®. If you need to replace your failed or damaged catalytic converter, this product is the right choice. Designed specifically for your vehicle, this catalytic converter...Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor$172.73 - $1,198.22
- CATCO®Universal Fit Catalytic ConvertersUniversal Fit Catalytic Converters by CATCO®. Designed and manufactured with innovative fabrication methods, high-tech materials, and advanced coating, this converter leapfrogs the competition. It delivers unparalleled performance and...Packed with the latest technological advancementsWill surpass your expectations for performance$59.23 - $837.61
- Walker®Ultra™ Catalytic ConvertersUltra™ Catalytic Converters by Walker®. Walker offers complete coverage: direct-fit mufflers, converters, pipes, resonators and accessories. Walker is an OE supplier to many major nameplate vehicle manufacturers. Trust Walker, an...Constructed to meet your vehicle’s specific emissions requirementsFeatures stainless steel body with aluminized steel pipe and heat shields$62.19 - $535.99
- Eastern Catalytic®Direct Fit Catalytic ConverterDirect Fit Catalytic Converter by Eastern Catalytic®. If you need to replace your failed or damaged catalytic converter, this product is the right choice. Designed specifically for your vehicle, this catalytic converter is a great...Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor$139.23 - $1,149.53
- CATCO®Direct Fit Catalytic ConvertersDirect Fit Catalytic Converters by CATCO®. Designed and manufactured with innovative fabrication methods, high-tech materials, and advanced coating, this converter leapfrogs the competition. It delivers unparalleled performance and...Packed with the latest technological advancementsWill surpass your expectations for performance$135.02 - $983.12
- iD Select®ECO GM Direct Fit Catalytic Converter and Pipe AssemblyECO GM Direct Fit Catalytic Converter and Pipe Assembly by iD Select®. Swap out your worn-out or malfunctioning part with this top-notch exhaust product from iD Select. It’s built to OEM specifications to offer the same fit, form,...Direct OEM replacement for your malfunctioning exhaust partMade to deliver the ultimate in quality, reliability, and value$253.11 - $877.43
- Eastern Catalytic®ECO GM Direct Fit Converter and Pipe AssemblyECO GM Direct Fit Converter and Pipe Assembly by Eastern Catalytic®. If you need to replace your failed or damaged catalytic converter, this product is the right choice. Designed specifically for your vehicle, this catalytic converter...Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor$194.78 - $856.07
- Eastern Catalytic®ECO II Direct Fit Converter and Pipe AssemblyECO II Direct Fit Converter and Pipe Assembly by Eastern Catalytic®. If you need to replace your failed or damaged catalytic converter, this product is the right choice. Designed specifically for your vehicle, this catalytic converter...Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor$196.94 - $1,124.91
- BRExhaust®Catalytic Converter and Pipe AssemblyCatalytic Converter and Pipe Assembly by BRExhaust®. If you're in need of a replacement catalytic converter, you can't do better than BRExhaust. They're a leading supplier to vehicle manufacturers and use advanced manufacturing...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$173.84 - $1,511.07
- AP Exhaust®608 Series Universal Fit Catalytic Converters608 Series Universal Fit Catalytic Converters by AP Exhaust®. Three-Way No / Air OBDII by designed US-EPA Compliant catalytic converters are efficient at the oxidation of HC’s and CO, and very efficient at the reduction of NOx,...A multitude of Universal converter bodies provided for maximum coverageProvides professional installer with immediate installation options$137.74 - $368.55
- iD Select®ECO GM Universal Fit Catalytic ConverterECO GM Universal Fit Catalytic Converter by iD Select®. Swap out your worn-out or malfunctioning part with this top-notch exhaust product from iD Select. It’s built to OEM specifications to offer the same fit, form, and function...Direct OEM replacement for your malfunctioning exhaust partMade to deliver the ultimate in quality, reliability, and value$191.80 - $195.15
- Eastern Catalytic®Universal Fit Catalytic ConverterUniversal Fit Catalytic Converter by Eastern Catalytic®. Whether your catalytic converter is damaged by road debris or failed due to an engine problem, you definitely need a new one, and this product is the way to go. Made of stainless...Converts harmful engine emissions to less dangerous gases and water vaporAdvanced design for maximum engine output$103.08 - $681.00
- CATCO®Select Plus Tech Series Universal Fit Catalytic ConvertersSelect Plus Tech Series Universal Fit Catalytic Converters by CATCO®. Designed and manufactured with innovative fabrication methods, high-tech materials, and advanced coating, this converter leapfrogs the competition. It delivers...Packed with the latest technological advancementsWill surpass your expectations for performance$278.92 - $644.78
- DEC®Catalytic Converter and Pipe AssemblyCatalytic Converter and Pipe Assembly by DEC®. Pick out a catalytic converter by DEC and get your emissions back into check without worrying about feature again. These catalytic converters are made from a heavy duty stainless steel...Direct fitMade from a heavy duty stainless steel outer shell$233.09 - $3,549.35
- Fel-Pro®Catalytic Converter GasketsCatalytic Converter Gaskets 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 gaskets meet specific OEM...Direct OEM replacement for a proper fitEnsures reliable sealing performance$3.93 - $59.09
- Big End Performance®PCV Breather CapPCV Breather Cap by Big End Performance®. 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 needs and deliver great...$12.39 - $14.91
- Big End Performance®Clamp On PCV BreatherClamp On PCV Breather by Big End Performance®. This Big End Performance product is just the option for you in case you want to get the most out of your auto. It is made from first-rate materials to provide the highest level of quality....High quality at an affordable priceExpertly made from premium materials$16.27 - $18.98
- Granatelli Motor Sports®Valve Cover BreatherValve Cover Breather by Granatelli Motor Sports®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind. It will meet your...Made with precision and quality in mindDesigned to meet your specific needs$15.96
- Granatelli Motor Sports®Valve Cover Breather InsertValve Cover Breather Insert by Granatelli Motor Sports®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind. It will meet...Made with precision and quality in mindDesigned to meet your specific needs$50.69 - $67.83
- Dorman®OE Solutions™ Oxygen Sensor Bung Repair KitOE Solutions™ Oxygen Sensor Bung Repair Kit by Dorman®. Why replace an exhaust pipe because of a corroded, stripped or damaged oxygen sensor bung? Save the pipe and replace the bung with this weld-on replacement. Standard O2 sensor...Repair-friendly solution - this oxygen sensor bung allows replacement of a damaged fitting without replacing the entire exhaust componentUniversal fitment - designed to accommodate standard oxygen sensor threads$9.61 - $11.35
Shop By Service Type
- Oxygen Sensor Replacement
- Air Pump Check Valve Replacement
- Evaporation Vent Solenoid Replacement
- Positive Crankcase Ventilation (PCV) Valve Hose Replacement
- Canister Purge Solenoid Replacement
- Secondary Air Injection Hose Replacement
- Positive Crankcase Ventilation (PCV) Valve Replacement
- Fuel Evaporative Canister Replacement
- Air Pump Check and Diverter Valve Replacement
The Buick Rainier is a mid-size SUV that first saw the world in 2003 and managed to stay in production up to 2007. Featuring a conventional body-on-frame construction and rear-wheel drive (all-wheel drive was optional), this capable and functional SUV was a good choice for those who wanted to get high cargo capacity, comfort, and practicality. When it comes to the engine, the Rainier offered a 4.2L I6 or 5.3L V8 engine mated to a 4-speed automatic transmission. Needless to say, these engines are powerful and require a fairly large amount of fuel, so engineers implemented several emission control systems to make the motors more eco-friendly.
Traditionally for more or less modern gasoline engines, such systems include positive crankcase ventilation, catalytic converter, EGR, and EVAP system controlling gasoline evaporation in the fuel tank. The designs of these systems vary in different models, but the working principle is mainly the same. Also, some of their parts require servicing or replacement over time. If you need high-quality Buick Rainier emission control parts, browse our online catalog. Here you will find a large assortment of products sorted by categories and model years. Place your order, and our professional team will ship the required replacement parts to your address.
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