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Get affordable Mazda RX7 catalytic converters you deserve. In just 10 minutes, you could save up to 80% with PartsGeek. Save time and dollars on your next RX7 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 $72.43 and $130.00

Mazda RX7 Catalytic Converter Reviews
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Shop Mazda RX7 Replacement Catalytic Converter

With high-tech ingenuity and incredibly impressive style, no auto is more treasured than an exclusive Mazda. Bestselling carmakers know the vital importance of high performance. Top motoring is a breeze with high-performance options made to function with the engine as well as guidance components. Found inside the exhaust system of a vehicle, a Mazda RX7 Catalytic Converter operates to lower the entire harmful emissions of a car by catalyzing a chemical process in the exhaust. The Catalytic Converter is a device which mitigates the amount of nitrogen oxide emissions from your car's exhaust, allowing your car to pass your state emissions test. Adequately performing Catalytic Converters are essential to be able to meet EPA rules for motor vehicle running. Although resistant to damage, this component occasionally breaks or fails, generally because it is hit by road debris. Catalytic Converters do their job by chemically converting hazardous pollutants into harmless water and CO2, via a metallic catalyst, usually platinum, then expelling the treated exhaust gas through the vehicle exhaust. When you picked the Mazda RX7, you chose a car with great performance and notable style; you can ensure that choice by choosing the right parts and accessories.

We stock these Catalytic Converter brands for the Mazda RX7: Eastern CatalyticWalkerFlowmasterMagnaflowCatco

Select your RX7 year

Review Fitment Notes
Showing 18 of 134 Results
Rear Eastern Catalytic Catalytic Converter - for 1983 Mazda RX7 1.1L Rotary - 70421 Click to Enlarge
4.8 Stars
Eastern Catalytic 70421
Catalytic Converter
Loading Reviews...
Part Number: 70421
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 - Standard
Position: Rear
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}
$122.43
(16) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1983 Mazda RX7 1.1L Rotary
Front Eastern Catalytic Catalytic Converter - for 1983 Mazda RX7 1.1L Rotary - 70248 Click to Enlarge
5 Stars
Eastern Catalytic 70248
Catalytic Converter
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Part Number: 70248
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 - Standard
Position: Front
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}
$110.43
(30) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1983 Mazda RX7 1.1L Rotary
Rear Walker Catalytic Converter - for 1985 Mazda RX7 1.3L Rotary - 15031 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 15031
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.; Standard Universal Type; Modifications and/or Additional Parts May Be Required for Installation
  • EPA COMPLIANT -- For use on pre-OBDII vehicles, 1995 and older. Not legal for sale or use in CA. Legal in NY and ME on all pre-OBD vehicles only. Consult your state's aftermarket converter regulations for details.
  • NO BREAK IN REQUIRED -- Ready to operate with application-specific converter shell design and mat compression, no converter break in required after installation
  • 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: Rear
Condition: New
Substrate Material: Ceramic
California Air Resources Board (CARB) Certified: No
Body Material: Stainless Steel
Air Tube: Yes
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}
$118.43
(1) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1985 Mazda RX7 1.3L Rotary
Flowmaster Catalytic Converter - for 1986 Mazda RX7 1.3L Rotary - 2200124 Click to Enlarge
Flowmaster Catalytic Converter - for 1986 Mazda RX7 1.3L Rotary - 2200124 Click to Enlarge
Flowmaster Catalytic Converter - for 1986 Mazda RX7 1.3L Rotary - 2200124 Click to Enlarge
Flowmaster Catalytic Converter - for 1986 Mazda RX7 1.3L Rotary - 2200124 Click to Enlarge
5 Stars
Flowmaster 2200124
Catalytic Converter
Loading Reviews...
Part Number: 2200124
Brand: Flowmaster
Notes: Catalytic Converter -- Universal Catalytic Converter; 49 State; 220 Series; 2.25in. Inlet / Outlet; Slip Fit Inlet / Outlet Conn.; Body Length 14in. / Width 6.125in.; Oval; 5500 Max. GVW; 5.9L Max EngineSize; Not Legal For Sale Or Use On Vehicles Registered In CA
Condition: New
Shipping Options: Ground
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$115.98
View Details
This Part Fits:
Catalog: F
Vehicle Engine
1986 Mazda RX7 1.3L Rotary
Rear Eastern Catalytic Catalytic Converter - for 1984 Mazda RX7 1.3L Rotary - 70421 Click to Enlarge
4.8 Stars
Eastern Catalytic 70421
Catalytic Converter
Loading Reviews...
Part Number: 70421
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 - Standard
Position: Rear
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}
$122.43
(16) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1984 Mazda RX7 1.3L Rotary
Rear Eastern Catalytic Catalytic Converter - for 1985 Mazda RX7 1.3L Rotary - 70421 Click to Enlarge
4.8 Stars
Eastern Catalytic 70421
Catalytic Converter
Loading Reviews...
Part Number: 70421
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 - Standard
Position: Rear
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}
$122.43
(16) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1985 Mazda RX7 1.3L Rotary
Rear Eastern Catalytic Catalytic Converter - for 1988 Mazda RX7 1.3L Rotary - 70421 Click to Enlarge
4.8 Stars
Eastern Catalytic 70421
Catalytic Converter
Loading Reviews...
Part Number: 70421
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 - Standard
Position: Rear
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}
$122.43
(16) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1988 Mazda RX7 1.3L Rotary
Rear Eastern Catalytic Catalytic Converter - for 1981 Mazda RX7 1.1L Rotary - 70421 Click to Enlarge
4.8 Stars
Eastern Catalytic 70421
Catalytic Converter
Loading Reviews...
Part Number: 70421
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 - Standard
Position: Rear
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}
$122.43
(16) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1981 Mazda RX7 1.1L Rotary
Rear Walker Catalytic Converter - for 1994 Mazda RX7 1.3L Rotary - 15037 Click to Enlarge
5 Stars
Walker 15037
Catalytic Converter
Loading Reviews...
Part Number: 15037
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.; Standard Universal Type; Modifications and/or Additional Parts May Be Required for Installation
  • EPA COMPLIANT -- For use on pre-OBDII vehicles, 1995 and older. Not legal for sale or use in CA. Legal in NY and ME on all pre-OBD vehicles only. Consult your state's aftermarket converter regulations for details.
  • NO BREAK IN REQUIRED -- Ready to operate with application-specific converter shell design and mat compression, no converter break in required after installation
  • 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: Rear
Condition: New
Substrate Material: Ceramic
California Air Resources Board (CARB) Certified: No
Body Material: Stainless Steel
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}
$97.43
(1) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1994 Mazda RX7 1.3L Rotary
Rear Walker Catalytic Converter - for 1984 Mazda RX7 1.3L Rotary - 15031 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 15031
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.; Standard Universal Type; Modifications and/or Additional Parts May Be Required for Installation
  • EPA COMPLIANT -- For use on pre-OBDII vehicles, 1995 and older. Not legal for sale or use in CA. Legal in NY and ME on all pre-OBD vehicles only. Consult your state's aftermarket converter regulations for details.
  • NO BREAK IN REQUIRED -- Ready to operate with application-specific converter shell design and mat compression, no converter break in required after installation
  • 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: Rear
Condition: New
Substrate Material: Ceramic
California Air Resources Board (CARB) Certified: No
Body Material: Stainless Steel
Air Tube: Yes
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}
$118.43
(1) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1984 Mazda RX7 1.3L Rotary
Rear Eastern Catalytic Catalytic Converter - for 1987 Mazda RX7 1.3L Rotary - 70421 Click to Enlarge
4.8 Stars
Eastern Catalytic 70421
Catalytic Converter
Loading Reviews...
Part Number: 70421
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 - Standard
Position: Rear
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}
$122.43
(16) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1987 Mazda RX7 1.3L Rotary
Rear Eastern Catalytic Catalytic Converter - for 1987 Mazda RX7 1.3L Rotary - 70317 Click to Enlarge
4.9 Stars
Eastern Catalytic 70317
Catalytic Converter
Loading Reviews...
Part Number: 70317
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 - Standard
Position: Rear
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}
$72.43
(73) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1987 Mazda RX7 1.3L Rotary
Rear Eastern Catalytic Catalytic Converter - for 1988 Mazda RX7 1.3L Rotary - 70317 Click to Enlarge
4.9 Stars
Eastern Catalytic 70317
Catalytic Converter
Loading Reviews...
Part Number: 70317
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 - Standard
Position: Rear
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}
$72.43
(73) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1988 Mazda RX7 1.3L Rotary
Rear Eastern Catalytic Catalytic Converter - for 1986 Mazda RX7 1.3L Rotary - 70317 Click to Enlarge
4.9 Stars
Eastern Catalytic 70317
Catalytic Converter
Loading Reviews...
Part Number: 70317
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 - Standard
Position: Rear
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}
$72.43
(73) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1986 Mazda RX7 1.3L Rotary
Front Eastern Catalytic Catalytic Converter - for 1990 Mazda RX7 1.3L Rotary - 70384 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 70384
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 - Standard
Position: Front
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}
$106.43
(2) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1990 Mazda RX7 1.3L Rotary
Walker Catalytic Converter - for 1985 Mazda RX7 1.1L Rotary - 15031 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 15031
Brand: Walker
Notes: EPA -- May Require Part #35574; 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.; Standard Universal Type; Modifications and/or Additional Parts May Be Required for Installation
  • EPA COMPLIANT -- For use on pre-OBDII vehicles, 1995 and older. Not legal for sale or use in CA. Legal in NY and ME on all pre-OBD vehicles only. Consult your state's aftermarket converter regulations for details.
  • NO BREAK IN REQUIRED -- Ready to operate with application-specific converter shell design and mat compression, no converter break in required after installation
  • 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
Substrate Material: Ceramic
California Air Resources Board (CARB) Certified: No
Body Material: Stainless Steel
Air Tube: Yes
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}
$125.08
View Details
This Part Fits:
Catalog: H
Vehicle Engine
1985 Mazda RX7 1.1L Rotary
Rear Magnaflow Catalytic Converter - for 1991 Mazda RX7 1.3L Rotary - 94014 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 94014
Brand: Magnaflow
Notes: Universal Standard Grade Federal (Exc. CA) -- Cutting and Welding Required During Installation
Position: Rear
Condition: New
Body Material: Stainless Steel
Series: Standard Grade
Material: Stainless Steel
Heat Shield Included: Yes
Shipping Options: Free Ground Shipping
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$130.00
with FREE Shipping
(1) In Stock
This Part Fits:
Catalog: C
Vehicle Engine
1991 Mazda RX7 1.3L Rotary
Front Catco Catalytic Converter - for 1991 Mazda RX7 1.3L Rotary Naturally Aspirated - 2538 Click to Enlarge
5 Stars
Catco 2538
Catalytic Converter
Loading Reviews...
Part Number: 2538
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.
Position: Front
Condition: New
Shipping Options: Ground
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$105.98
(3) In Stock
This Part Fits:
Catalog: P
Vehicle Engine
1991 Mazda RX7 1.3L Rotary Naturally Aspirated

Related Exhaust Parts

Catalytic Converters available for the following Mazda RX7 years: 1995, 1994, 1993, 1991, 1990, 1989, 1988, 1987, 1986, 1985, 1984, 1983, 1982, 1981, 95, 94, 93, 91, 90, 89, 88, 87, 86, 85, 84, 83, 82, 81. This part is also sometimes called Mazda RX7 Exhaust Converters. We stock catalytic converter parts for most Mazda models including Protege, Miata, 6, Tribute, Protege5, RX8, MPV, 626, 3, CX7, B2300, B3000, B2500, B4000, 5, B2200, B2600, MX6, Millenia, CX5, 929, B2000, CX9, MX3, 323, Navajo, GLC, 808 and B1800.

Mazda RX7 Catalytic Converter Reviews
5 of 5
Verified Customer
2/22/14 11:08 AM - USA

was on line to find a good price and this company is the cheapest out there. Thanks so much for you help. - Don

- 1988 Mazda RX7 Catalytic Converter
5 of 5
Verified Customer
5/14/15 05:35 AM - USA

These parts that I purchased from Parts Geek fit perfectly and arrived in a timely manner. I would definitely recommend Parts Geek to a friend! - Tim Hairston

- 1991 Mazda RX7 Catalytic Converter