Walker® - Ultra™ Small Oval Universal Fit Catalytic Converter

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Walker® - Ultra™ Universal Fit Catalytic Converter
Walker® - Ultra™ Universal Fit Catalytic ConverterWalker® - Understanding Catalytic Converters and How They WorkWalker Authorized Dealer
In Stock (15) - Ships within 2 to 4 days
2002 Subaru WRX
Fits Following Model(s):
  • with Federal Emission
    These converters meet Federal US EPA standards. They are NOT Legal for sale or use on any vehicle licensed or operated in the state of California.
  • Modifications and / or additional parts required
  • Requires part# 55350
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Product Details

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Walker Exhaust Parts

Subaru WRX with Federal Emission 2002-2003, Ultra™ Universal Fit Catalytic Converter by Walker®. Inlet Diameter 1: 2.5". Outlet Diameter: 2.5". Overall Length: 13.25". Body Dimensions: 10" Length x 6.125" Width x 4.25" Height. Inlet / Outlet Quantity: 1 Inlet / 1 Outlet. Connection Type: Pipe Connection. Oxygen Sensor Location: with Post Catalyst O2 Sensor Port. Body Shape: Small Oval. Body Material: Stainless Steel. Substrate Material: Ceramic. This catalytic converter features the correct load of precious metals to ensure the proper limitation of tailpipe emissions. It is designed to meet the EPA policy and emission reduction requirements. This converter is not legal in California. Modifications may be required for installation.


  • Modifications and / or additional parts required
  • Requires part# 55350

Fitment notes: These converters meet Federal US EPA standards. They are NOT Legal for sale or use on any vehicle licensed or operated in the state of California.

Walker - Catalytic ConvertersWalker - VideosWalker - About


  • Emission Warranty: 5 Years / 50,000 Miles (80,000 Kilometers)
  • Structural Warranty: 5 Years / 50,000 Miles (80,000 Kilometers)
  • Comply with specific pre-OBDII and OBDII requirements in the state of California
  • The RIGHT loading of precious metals
  • Proper catalyst material and design
  • High-technology washcoat
  • Enhanced oxygen storage capacity

Walker is the world's leading manufacturer of automotive exhaust systems and emission control products for the replacement and OE markets. It offers complete engine-to-tailpipe exhaust solutions and exploits modern emission control technologies that fully satisfy the needs of the automotive industry. Walker has introduced a long line of innovations that revolutionized the market and set new standards for quality and durability. The louvered tube, stainless steel muffler, and forerunners of today's catalytic converters were the industry 'firsts' developed by Walker. It is also the first aftermarket manufacturer that offered a Limited Lifetime Warranty for the professional installer. Walker®, an industry leader in emissions control products, offers a complete line-up to meet all customer needs! World-class, engine-to-tailpipe exhaust solutions for domestic and import vehicles. Walker has everything from brackets and hangers, to clamps and gaskets - all the accessories you need to do the complete exhaust job. Walker is your one-stop exhaust shop, offering a full line of accessories.

Warranty Information

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90-Day Risk-Free Trial Offer

Try our premium exhaust products for 90 days*. If, for any reason, the qualifying products* don't live up to your expectations within the first 90 days, replace the products and we will refund your original product's purchase price (less any discounts and/or rebates), plus labor (up to $50 per axle).

For questions about this offer, please contact our customer service department at 734-384-7898. This offer does not include units improperly installed or substituted. Valid only on vehicles used for private, non-commercial use and may be withdrawn at any time.

Limited Lifetime Warranty

Walker warrants qualifying exhaust products against defects and wear-out when used on private passenger cars and light trucks under normal operating conditions for as long as such original purchaser owns the vehicle on which they were originally installed.

Tenneco's obligation under this warranty is limited to replacement of the worn-out or defective product with the same product in accordance with this warranty. Cost of removal and installation are not included, and any incidental and consequential damages are excluded under this warranty, regardless of when the failure occurs. This warranty has no cash value. This warranty does not apply to products which have been modified, improperly applied or installed on vehicles used for commercial or racing purposes.

To make a claim under this warranty, return the worn-out or defective product with the dated original receipt to the dealer or retailer from whom it was purchased or to a Tenneco dealer for verification and exchange under this warranty.

This warranty gives you specific legal rights, and you may also have other rights, which vary from state to state. Any implied warranties you may have under state law are limited to the same duration as this warranty. Some states do not allow limitations on how long an implied warranty lasts or do not allow the exclusion or limitation of incidental or consequential damages, so the above limitations and exclusion may not apply to you.


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Magnuson-Moss Warranty Act:
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More
Walker® - Ultra™ Universal Fit Catalytic ConverterWalker® - Ultra™ Small Oval Universal Fit...    
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