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Get the Best Priced Buick Rainier Catalytic Converter

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Get affordable Buick Rainier catalytic converters you deserve. In just 10 minutes, you could save up to 80% with PartsGeek. Save time and dollars on your next Rainier exhaust converters purchase. Over 12 Years of saving people money and providing great customer service. Check our low-cost options today. The average cost for catalytic converter replacement is between $106.98 and $1,107.98

Buick Rainier Catalytic Converter Reviews
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Shop Buick Rainier Replacement Catalytic Converter

Search our online catalytic converter catalog and find the lowest priced discount auto parts on the web. We sell wholesale to the public. We offer high quality new, OEM, aftermarket and remanufactured Buick Rainier Catalytic Converter parts. We specialize in a wide-variety of high-quality car parts and accessories for your car, truck or SUV. Call toll free to order or place your order online via our secure checkout system. Our online parts catalog uses real-time inventory, so you can be assured the parts you buy are in stock at the time of ordering. Most orders are shipped the same day.

We stock these Catalytic Converter brands for the Buick Rainier: Eastern CatalyticDECDIY SolutionsDavicoBosalCatcoWalkerMagnaflow

Select your Rainier year

Review Fitment Notes
Showing 19 of 98 Results
Eastern Catalytic Catalytic Converter - for 2005 Buick Rainier 4.2L 6 Cyl - 83166 Click to Enlarge
4.9 Stars
Eastern Catalytic 83166
Catalytic Converter
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Part Number: 83166
Brand: Eastern Catalytic
Notes: UNIVERSAL -- Undercar; Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions)
  • Federal / EPA Semi-Universal Converter - ECO II
Condition: New
Shipping Options: Ground
5 Year / 50,000 Mile Eastern Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$153.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine Wheel Base
2005 Buick Rainier 4.2L 6 Cyl 113.0
Eastern Catalytic Catalytic Converter - for 2004 Buick Rainier 4.2L 6 Cyl - 50365 Click to Enlarge
5 Stars
Eastern Catalytic 50365
Catalytic Converter
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Part Number: 50365
Brand: Eastern Catalytic
Notes: DIRECT FIT -- Undercar; Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions)
  • Federal / EPA Direct-fit Converter Assembly
Condition: New
Shipping Options: Ground
5 Year / 50,000 Mile Eastern Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$321.43
(6) In Stock
This Part Fits:
Catalog: B
Vehicle Engine Wheel Base
2004 Buick Rainier 4.2L 6 Cyl 113.0
Eastern Catalytic Catalytic Converter - for 2004 Buick Rainier 4.2L 6 Cyl - 83166 Click to Enlarge
4.9 Stars
Eastern Catalytic 83166
Catalytic Converter
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Part Number: 83166
Brand: Eastern Catalytic
Notes: UNIVERSAL -- Undercar; Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions)
  • Federal / EPA Semi-Universal Converter - ECO II
Condition: New
Shipping Options: Ground
5 Year / 50,000 Mile Eastern Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$153.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Engine Wheel Base
2004 Buick Rainier 4.2L 6 Cyl 113.0
DEC Catalytic Converter and Pipe Assembly - for 2006 Buick Rainier AWD 5.3L V8 - GM22109 Click to Enlarge
Website Reviews
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Part Number: GM22109
Brand: DEC
Notes: Vehicle Specific Loading -- Y-pipe with 2 converters and flex; E.P.A COMPLIANT
Condition: New
Shipping Options: Ground
$578.43
(2) In Stock
This Part Fits:
Catalog: B
Vehicle Sub Model Engine Wheel Base
2006 Buick Rainier AWD 5.3L V8 113.0
DIY Solutions Catalytic Converter - for 2004 Buick Rainier 4.2L 6 Cyl - EXH00843 Click to Enlarge
Website Reviews
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Part Number: EXH00843
Brand: DIY Solutions
Notes: Catalytic Converter -- L6 4.2L
  • Direct Fit Replacement
  • Quality Tested - built to a strict level of product standards.
Condition: New
Package Contents: Gaskets
Shipping Options: Free Ground Shipping
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$299.95
with FREE Shipping
(3) In Stock
This Part Fits:
Catalog: Q
Vehicle Engine
2004 Buick Rainier 4.2L 6 Cyl
Center Davico Catalytic Converter - for 2004 Buick Rainier 4.2L 6 Cyl - 19100 Click to Enlarge
5 Stars
Davico 19100
Catalytic Converter
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Part Number: 19100
Brand: Davico
Notes: Exact-Fit Catalytic Converter -- Not legal for use in California; Illegal for installation in NY on vehicles equipped with California emission systems; California Emissions; Federal Emissions
Position: Center
Condition: New
Gaskets Included: No
Shipping Options: Ground
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$252.43
(4) In Stock
This Part Fits:
Catalog: B
Vehicle Engine Wheel Base
2004 Buick Rainier 4.2L 6 Cyl 113.0
Bosal Catalytic Converter - for 2006 Buick Rainier 4.2L 6 Cyl - 079-5215 Click to Enlarge
Website Reviews
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Part Number: 079-5215
Brand: Bosal
Notes: BRExhaust Federal Direct-Fit Premium Load OBDII Catalytic Converter
Condition: New
Finish: Stainless Steel
Material: Stainless Steel
Type: Federal / EPA Compliant
Type: Direct-Fit
Body Material: Stainless Steel
Shipping Options: Ground
5 Year / 25,000 Mile Bosal Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$312.43
(4) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2006 Buick Rainier 4.2L 6 Cyl
Catco Catalytic Converter - for 2004 Buick Rainier 4.2L 6 Cyl - 2506R Click to Enlarge
4.9 Stars
Catco 2506R
Catalytic Converter
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Part Number: 2506R
Brand: Catco
Notes: Catalytic Converter -- Universal; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
Condition: New
Shipping Options: Ground
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$106.98
(12) In Stock
This Part Fits:
Catalog: P
Vehicle Engine
2004 Buick Rainier 4.2L 6 Cyl
Eastern Catalytic Catalytic Converter - for 2004 Buick Rainier 4.2L 6 Cyl - 93166 Click to Enlarge
5 Stars
Eastern Catalytic 93166
Catalytic Converter
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Part Number: 93166
Brand: Eastern Catalytic
Notes: UNIVERSAL -- Undercar; Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions)
  • Federal / EPA Semi-Universal Converter - ECO III
Condition: New
Shipping Options: Ground
5 Year / 50,000 Mile Eastern Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$167.43
(2) In Stock
This Part Fits:
Catalog: B
Vehicle Engine Wheel Base
2004 Buick Rainier 4.2L 6 Cyl 113.0
Bosal Catalytic Converter - for 2004 Buick Rainier 4.2L 6 Cyl - 093-2030 Click to Enlarge
5 Stars
Bosal 093-2030
Catalytic Converter
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Part Number: 093-2030
Brand: Bosal
Notes: BRExhaust Federal Universal Standard Load OBDII Catalytic Converter -- Cutting and Welding Required During Installation
Condition: New
Shipping Options: Ground
5 Year / 25,000 Mile Bosal Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$167.43
View Details
This Part Fits:
Catalog: B
Vehicle Engine
2004 Buick Rainier 4.2L 6 Cyl
Catco Catalytic Converter - for 2004 Buick Rainier 5.3L V8 - 2565R Click to Enlarge
3 Stars
Catco 2565R
Catalytic Converter
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Part Number: 2565R
Brand: Catco
Notes: Catalytic Converter -- Universal; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
Condition: New
Shipping Options: Ground
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$111.98
View Details
This Part Fits:
Catalog: P
Vehicle Engine
2004 Buick Rainier 5.3L V8
Eastern Catalytic Catalytic Converter - for 2006 Buick Rainier 4.2L 6 Cyl - 99776 Click to Enlarge
Website Reviews
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Part Number: 99776
Brand: Eastern Catalytic
Notes: UNIVERSAL -- Undercar; Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions)
  • Federal / EPA Semi-Universal Converter - ECO GM
Condition: New
Shipping Options: Ground
5 Year / 50,000 Mile Eastern Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$199.43
(1) In Stock
This Part Fits:
Catalog: B
Vehicle Engine Wheel Base
2006 Buick Rainier 4.2L 6 Cyl 113.0
Bosal Catalytic Converter - for 2007 Buick Rainier 4.2L 6 Cyl - 093-2030 Click to Enlarge
5 Stars
Bosal 093-2030
Catalytic Converter
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Part Number: 093-2030
Brand: Bosal
Notes: BRExhaust Federal Universal Standard Load OBDII Catalytic Converter -- Cutting and Welding Required During Installation
Condition: New
Shipping Options: Ground
5 Year / 25,000 Mile Bosal Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$167.43
View Details
This Part Fits:
Catalog: B
Vehicle Engine
2007 Buick Rainier 4.2L 6 Cyl
Bosal Catalytic Converter - for 2007 Buick Rainier 4.2L 6 Cyl - W0133-1925230 Click to Enlarge
Website Reviews
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Part Number: W0133-1925230
Brand: Bosal
Notes: EPA Compliant - (48-State & Canada) EPA Tier 0 & Tier 1 emission use.
Detailed Notes: Not legal for sale or use in California and New York
Condition: New
Shipping Options: Ground, Overnight, 2 Day
5 Year / 25,000 Mile Bosal Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
List Price:
$533.44
Our Price: $480.58
(1) In Stock
This Part Fits:
Catalog: A
Vehicle Engine
2007 Buick Rainier 4.2L 6 Cyl
Walker Catalytic Converter - for 2006 Buick Rainier 4.2L 6 Cyl - 54772 Click to Enlarge
5 Stars
Walker 54772
Catalytic Converter
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Part Number: 54772
Brand: Walker
Notes: EPA -- Fits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Ultra Direct Fit Type
  • EPA COMPLIANT -- For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA & CO. Legal in NY & ME on EPA Federal Emission Equipped Vehicles only. Consult your state's aftermarket converter regulations for details.
  • DIRECT-FIT DESIGN -- Direct-fit bolt-on replacement solution with OE-style hangers, brackets, routings and heat shields for easy installation that doesn't require specialized fabrication and/or welding
  • KEEPS CHECK ENGINE LIGHT OFF FOR EMISSIONS CODES -- OE-style high-technology washcoat and optimal precious metal load delivers required reduction in tailpipe emissions to match vehicle application
  • STRONG AND DURABLE -- Features thick OE-style flanges, hangers and brackets for strength and durability
  • OE-STYLE DESIGN -- Features aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE -- Backed by Walker's 25,000-mile/40,000-kilometer emissions and 5-year 50,000-mile/80,000-kilometer structural integrity warranty. Visit Walkerexhaust.com for details.
Condition: New
Body Material: Stainless Steel
California Air Resources Board (CARB) Certified: No
Substrate Material: Ceramic
Air Tube: No
Shipping Options: Ground
5 Year / 50,000 Mile Walker Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$264.43
(8) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2006 Buick Rainier 4.2L 6 Cyl
Magnaflow Catalytic Converter - for 2007 Buick Rainier 4.2L 6 Cyl - 99006HM Click to Enlarge
5 Stars
Magnaflow 99006HM
Catalytic Converter
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Part Number: 99006HM
Brand: Magnaflow
Notes: Universal HM Grade Federal (Exc. CA) -- Cutting and Welding Required During Installation
Condition: New
Material: Stainless Steel
Body Material: Stainless Steel
Universal Or Specific Fit: Universal
Series: HM Grade
Heat Shield Included: Yes
Shipping Options: Free Ground Shipping
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$233.00
with FREE Shipping
(68) In Stock
This Part Fits:
Catalog: F
Vehicle Engine
2007 Buick Rainier 4.2L 6 Cyl
Walker Catalytic Converter - for 2005 Buick Rainier 4.2L 6 Cyl - 93253 Click to Enlarge
5 Stars
Walker 93253
Catalytic Converter
Loading Reviews...
Part Number: 93253
Brand: Walker
Notes: EPA -- Fits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Ultra Universal Type; Modifications and/or Additional Parts May Be Required for Installation
  • EPA COMPLIANT -- For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA & CO. Legal in NY & ME on EPA Federal Emission Equipped Vehicles only. Consult your state's aftermarket converter regulations for details.
  • KEEPS CHECK ENGINE LIGHT OFF FOR EMISSIONS CODES -- OE-style high-technology washcoat and optimal precious metal load delivers required reduction in tailpipe emissions to match vehicle application
  • DURABLE -- Features stainless-steel body with aluminized pipe and heat shields for durability
  • FLEXIBLE SOLUTION -- Customizable design features expandable bushings for easy fitment and may require specialized fabrication and/or welding for installation
  • OE-STYLE DESIGN -- Features aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE -- Backed by Walker's 25,000-mile/40,000-kilometer emissions and 5-year 50,000-mile/80,000-kilometer structural integrity warranty. Visit Walkerexhaust.com for details.
Condition: New
Body Material: Stainless Steel
California Air Resources Board (CARB) Certified: No
Substrate Material: Ceramic
Air Tube: No
Shipping Options: Ground
5 Year / 50,000 Mile Walker Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$217.08
(2) In Stock
This Part Fits:
Catalog: H
Vehicle Engine
2005 Buick Rainier 4.2L 6 Cyl
Left Magnaflow Catalytic Converter - for 2007 Buick Rainier 5.3L V8 - 5451306 Click to Enlarge
Website Reviews
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Part Number: 5451306
Brand: Magnaflow
Notes: 2.50in. Universal California OBDII Catalytic Converter -- Certification Level : LEV2 LEV; OE Spec; Cutting and Welding Required During Installation; CARB Executive Order D-193-143; Engine Family Number 7GMXT06.0387
Position: Left
Condition: New
Series: California
Material: Stainless Steel
Shipping Options: Ground
*** Legal in California, Colorado, New York, and Maine ***
$1,107.98
(2) In Stock
This Part Fits:
Catalog: C
Vehicle Engine
2007 Buick Rainier 5.3L V8
Left Walker Catalytic Converter - for 2004 Buick Rainier 5.3L V8 - 93247 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 93247
Brand: Walker
Notes: EPA -- Fits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Ultra Universal Type; Modifications and/or Additional Parts May Be Required for Installation
  • EPA COMPLIANT -- For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA & CO. Legal in NY & ME on EPA Federal Emission Equipped Vehicles only. Consult your state's aftermarket converter regulations for details.
  • KEEPS CHECK ENGINE LIGHT OFF FOR EMISSIONS CODES -- OE-style high-technology washcoat and optimal precious metal load delivers required reduction in tailpipe emissions to match vehicle application
  • DURABLE -- Features stainless-steel body with aluminized pipe and heat shields for durability
  • FLEXIBLE SOLUTION -- Customizable design features expandable bushings for easy fitment and may require specialized fabrication and/or welding for installation
  • OE-STYLE DESIGN -- Features aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE -- Backed by Walker's 25,000-mile/40,000-kilometer emissions and 5-year 50,000-mile/80,000-kilometer structural integrity warranty. Visit Walkerexhaust.com for details.
Position: Left
Condition: New
Body Material: Stainless Steel
California Air Resources Board (CARB) Certified: No
Substrate Material: Ceramic
Air Tube: No
Shipping Options: Ground
5 Year / 50,000 Mile Walker Limited Warranty
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$117.98
View Details
This Part Fits:
Catalog: N
Vehicle Engine
2004 Buick Rainier 5.3L V8

Related Exhaust Parts

Catalytic Converters available for the following Buick Rainier years: 2007, 2006, 2005, 2004, 07, 06, 05, 04. This part is also sometimes called Buick Rainier Exhaust Converters. We stock catalytic converter parts for most Buick models including LaCrosse, LeSabre, Regal, Enclave, Century, Rendezvous, Encore, Park Avenue, Lucerne, Verano, Riviera, Terraza, Skylark, Roadmaster, Electra, Reatta, Skyhawk, Estate Wagon, Commercial Chassis, Somerset and Somerset Regal.

Some of our Customer Reviews
Verified Customer
5/31/09 11:27 AM - USA

The part I ordered was fine. I was happy. I have ordered from you guys in the past. I will in the future. I was surprised that the part came earlier than expected. You did a good job. I will refer ... - Capt Chuck

Verified Customer
9/18/09 03:45 PM - USA

I revived my Jag hub cap in 2 days. Great job. I'll be back. - mr0ttawa