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Nissan D21 Catalytic Converter Reviews
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Shop Nissan D21 Replacement Catalytic Converter

State-of-the-art engineering and manufacturing are what you pay for with Nissan cars and trucks. Excellent power and high performance depend on top-notch parts and accessories. Bestselling carmakers understand the basic importance of satisfying performance. Correctly functioning Nissan D21 Catalytic Converters are necessary to be able to pass EPA regulations for car running. Though rugged, a converter occasionally needs repair, generally if it is damaged by road debris. Located inside your exhaust system of a car or truck, your Catalytic Converter acts to lower the entire toxic emissions of your vehicle by catalyzing a chemical process in the exhaust. The Catalytic Converter is a component that mitigates the amount of hydrocarbon gaseous emissions by your vehicle's exhaust, allowing your car to meet the requirements for your state emissions test. Catalytic Converters work by oxidizing pollutants into ordinary water and carbon dioxide, using a chemical catalyst, such as platinum, rhodium, or palladium, then expelling the treated exhaust out the tailpipe. Our specialists here at PartsGeek.com understand what it's like to take pride in your vehicle, and so we have made it our mission to help you find the right parts for the job.

We stock these Catalytic Converter brands for the Nissan D21: Eastern CatalyticBosalWalkerMagnaflowAP ExhaustCatco

Select your D21 year

Review Fitment Notes
Showing 20 of 290 Results
Eastern Catalytic Catalytic Converter - for 1986 Nissan D21 2.4L 4 Cyl - 70421 Click to Enlarge
4.8 Stars
Eastern Catalytic 70421
Catalytic Converter
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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
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}
$129.43
(9) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1986 Nissan D21 2.4L 4 Cyl
Eastern Catalytic Catalytic Converter - for 1987 Nissan D21 2.4L 4 Cyl - 40008 Click to Enlarge
5 Stars
Eastern Catalytic 40008
Catalytic Converter
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Part Number: 40008
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}
$169.43
(11) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1987 Nissan D21 2.4L 4 Cyl
Eastern Catalytic Catalytic Converter - for 1987 Nissan D21 2.4L 4 Cyl - 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
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}
$129.43
(9) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1987 Nissan D21 2.4L 4 Cyl
Eastern Catalytic Catalytic Converter - for 1993 Nissan D21 RWD 2.4L 4 Cyl - 70318 Click to Enlarge
4.9 Stars
Eastern Catalytic 70318
Catalytic Converter
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Part Number: 70318
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
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}
$78.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Sub Model Engine
1993 Nissan D21 RWD 2.4L 4 Cyl
Eastern Catalytic Catalytic Converter - for 1990 Nissan D21 RWD 2.4L 4 Cyl - 70318 Click to Enlarge
4.9 Stars
Eastern Catalytic 70318
Catalytic Converter
Loading Reviews...
Part Number: 70318
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
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}
$78.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Sub Model Engine
1990 Nissan D21 RWD 2.4L 4 Cyl
Eastern Catalytic Catalytic Converter - for 1989 Nissan D21 2.4L 4 Cyl - 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
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}
$129.43
(9) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1989 Nissan D21 2.4L 4 Cyl
Eastern Catalytic Catalytic Converter - for 1992 Nissan D21 RWD 2.4L 4 Cyl - 70318 Click to Enlarge
4.9 Stars
Eastern Catalytic 70318
Catalytic Converter
Loading Reviews...
Part Number: 70318
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
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}
$78.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Sub Model Engine
1992 Nissan D21 RWD 2.4L 4 Cyl
Eastern Catalytic Catalytic Converter - for 1988 Nissan D21 2.4L 4 Cyl - 40008 Click to Enlarge
5 Stars
Eastern Catalytic 40008
Catalytic Converter
Loading Reviews...
Part Number: 40008
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}
$169.43
(11) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1988 Nissan D21 2.4L 4 Cyl
Eastern Catalytic Catalytic Converter - for 1986 Nissan D21 2.4L 4 Cyl - 40008 Click to Enlarge
5 Stars
Eastern Catalytic 40008
Catalytic Converter
Loading Reviews...
Part Number: 40008
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}
$169.43
(11) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1986 Nissan D21 2.4L 4 Cyl
Eastern Catalytic Catalytic Converter - for 1993 Nissan D21 3.0L V6 - 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
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}
$129.43
(9) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1993 Nissan D21 3.0L V6
Eastern Catalytic Catalytic Converter - for 1994 Nissan D21 3.0L V6 - 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
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}
$129.43
(9) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1994 Nissan D21 3.0L V6
Bosal Catalytic Converter - for 1989 Nissan D21 RWD 2.4L 4 Cyl - 099-3291 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 099-3291
Brand: Bosal
Notes: BRExhaust Federal Direct-Fit Pre-OBDII Catalytic Converter
  • Engineered to provide excellent conversion of gases
  • Made from 16-gauge aluminized tubing
  • Built to OEM specifications
  • Features a one-piece configuration
  • Easy installation
Condition: New
Type: Federal / EPA Compliant
Material: Stainless Steel
Series: Federal
Type: Direct-Fit
Finish: Stainless Steel
Body Material: Stainless Steel
Mounting Hardware Included: Yes
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}
$155.43
(1) In Stock
This Part Fits:
Catalog: B
Vehicle Sub Model Engine
1989 Nissan D21 RWD 2.4L 4 Cyl
Walker Catalytic Converter - for 1994 Nissan D21 RWD 2.4L 4 Cyl - 15538 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 15538
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; Includes Front and Rear Gasket; Standard Direct Fit Type
  • Designed for use on Pre-OBDII vehicles. (1995 and older)
  • Flange to flange, direct fit design bolts to existing exhaust
  • Features ample precious metal load & proprietary washcoat technology
  • Stainless steel body with aluminized pipe and heat shields for durability
  • Thick OE-style flanges, hangers and brackets for enhanced strength
  • OE-style routing and hanger position for easy installation
  • 25,000-mi catalytic performance & 5-year/50,000-mi structural integrity warranty
  • Meets EPA emissions requirements
  • Not legal for sale in California
Condition: New
Product Grade: Economy
Fitment: Direct Fit
Body Material: Stainless Steel
Substrate Material: Ceramic
Package Contents: Gasket
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}
$176.43
(8) In Stock
This Part Fits:
Catalog: B
Vehicle Sub Model Engine
1994 Nissan D21 RWD 2.4L 4 Cyl
Eastern Catalytic Catalytic Converter - for 1992 Nissan D21 3.0L V6 - 40008 Click to Enlarge
5 Stars
Eastern Catalytic 40008
Catalytic Converter
Loading Reviews...
Part Number: 40008
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}
$169.43
(11) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1992 Nissan D21 3.0L V6
Bosal Catalytic Converter - for 1993 Nissan D21 RWD 2.4L 4 Cyl - 099-852 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 099-852
Brand: Bosal
Notes: BRExhaust Federal Direct-Fit Pre-OBDII Catalytic Converter
Condition: New
Type: Federal / EPA Compliant
Material: Stainless Steel
Series: Federal
Type: Direct-Fit
Finish: Stainless Steel
Body Material: Stainless Steel
Mounting Hardware Included: Yes
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}
$203.43
(3) In Stock
This Part Fits:
Catalog: B
Vehicle Sub Model Engine
1993 Nissan D21 RWD 2.4L 4 Cyl
Magnaflow Catalytic Converter - for 1994 Nissan D21 3.0L V6 - 53004 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 53004
Brand: Magnaflow
Notes: Universal Standard Grade Federal (Exc. CA) -- Cutting and Welding Required During Installation
Condition: New
Body Material: Stainless Steel
Material: Stainless Steel
Series: Standard 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}
$96.00
with FREE Shipping
View Details
This Part Fits:
Catalog: F
Vehicle Engine
1994 Nissan D21 3.0L V6
Bosal Catalytic Converter - for 1994 Nissan D21 Base 2.4L 4 Cyl - W0133-1605167 Click to Enlarge
5 Stars
Bosal W0133-1605167
Catalytic Converter
Loading Reviews...
Part Number: W0133-1605167
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:
$240.40
Our Price: $216.58
(5) In Stock
This Part Fits:
Catalog: A
Vehicle Sub Model Engine
1994 Nissan D21 Base 2.4L 4 Cyl
Walker Catalytic Converter - for 1989 Nissan D21 2.4L 4 Cyl - 80901 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 80901
Brand: Walker
Notes: CalCat -- CARB Executive Order D-182-55; Legal for sale and use in California and other states requiring CARB-compliant replacement converters. Consult the aftermarket converter regulations in your state for details.; Universal Type; Modifications and/or Additional Parts May Be Required for Installation
  • CARB COMPLIANT -- For use on OBDII vehicles, 1996 and newer and non-OBD 1995 and older. Legal for sale in CA, CO & other states requiring CARB-compliant replacement converters. Consult your state's aftermarket converter regulations.
  • SUPERIOR TECHNOLOGY -- Optimal high technology washcoat formulated to deliver superior performance (as compared to EPA-compliant converters)
  • CONSISTENT PERFORMANCE -- Utilizes a precise OE-style coating process to apply catalyst material to the substrate, providing consistent performance for assured emissions compliance
  • 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
  • BUY WITH CONFIDENCE -- Backed by Walker's 50,000-mile/80,000-kilometer emissions and structural integrity warranty
Condition: New
Body Material: Stainless Steel
California Air Resources Board (CARB) Certified: 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}
$658.08
(1) In Stock
This Part Fits:
Catalog: H
Vehicle Engine
1989 Nissan D21 2.4L 4 Cyl
AP Exhaust Catalytic Converter - for 1994 Nissan D21 RWD 3.0L V6 - 642409 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 642409
Brand: AP Exhaust
Notes: Catalytic Converter -- Direct Fit; (1994); This unit was designed to fit many applications. Measurement of the old unit and cutting of new unit is required.; Federal Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME and NY. Restrictions may apply in other states. Check with your state authority for details.; except California
Condition: New
Shipping Options: Ground
{We currently do not ship this catalytic converter to California, Colorado, New York, or Maine}
$189.98
View Details
This Part Fits:
Catalog: C
Vehicle Sub Model Engine
1994 Nissan D21 RWD 3.0L V6
Catco Catalytic Converter - for 1994 Nissan D21 RWD 2.4L 4 Cyl - 4087 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 4087
Brand: Catco
Notes: Catalytic Converter -- Direct Fit; Federal Emissions; Federal Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME and 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}
$128.98
View Details
This Part Fits:
Catalog: P
Vehicle Sub Model Engine
1994 Nissan D21 RWD 2.4L 4 Cyl

Related Exhaust Parts

Catalytic Converters available for the following Nissan D21 years: 1994, 1993, 1992, 1991, 1990, 1989, 1988, 1987, 1986, 94, 93, 92, 91, 90, 89, 88, 87, 86. This part is also sometimes called Nissan D21 Exhaust Converters. We stock catalytic converter parts for most Nissan models including Altima, Maxima, Sentra, Murano, Frontier, Pathfinder, Xterra, Quest, Versa, Titan, Rogue, Pickup, Armada, 350Z, Cube, 300ZX, 240SX, NV2500, 720, 370Z, NV200, Juke, Versa Note, Pathfinder Armada, 280ZX, NV1500, 200SX, Stanza, 280Z, Rogue Select, NX, Pulsar NX, Axxess, 210, 310, 510, 620, B210, Micra and 810.

Nissan D21 Catalytic Converter Reviews
5 of 5
Verified Customer
7/4/13 11:39 AM - USA

Great price, outstandingly quick delivery, good product. It's a winning combination. - Dan in Carlisle

- 1992 Nissan D21 Catalytic Converter
5 of 5
Verified Customer
11/3/15 11:14 AM - USA

This site is great. I found what I needed without any hassle. Immediate reponse.Shipped the same date and received within 3 days. I will definitely use though site again. Most importantly, great prices. - BARBARA

- 1989 Nissan D21 Catalytic Converter
5 of 5
Verified Customer
11/26/18 09:25 PM - USA

I am very satisfied with the product, the time and everything else, except I didn't like the fact that the shipping was on me. It should have been no delivery charges.

Thanks! - JJ Audain

- 1986 Nissan D21 Catalytic Converter