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Flowmaster Catalytic Converter - CARB Compliant Direct Fit - OBDII

Fits 1997-1998 Jeep Wrangler with 2.5L L4 Engine

Part # 630503 Be the first to write a review
Flowmaster's California Legal Direct-Fit Catalytic Converters are designed to meet California's emissions requirements on a wide variety of applications. These high quality catalytic converters are manufactured in the USA, and feature stainless steel outer shell construction for maximum durability. The internal substrate material and precious metal loading have been carefully engineered for maximum efficiency and to avoid "MIL" code issues that are common with lower quality converters. Direct-Fit Catalytic Converter assemblies include mandrel bent stainless steel tubing and all necessary hardware needed for installation. These high quality converters have been granted Exemption Orders (EO) by the California Air Resources Board (CARB) and are warranted to meet California emission requirements for 50,000 miles. Additionally, the stainless steel body and pipes are warranted for 5 years or 50,000 miles. Please refer to the Flowmaster Application Guide for specific part number, vehicle application and California Executive Order number information. These converters may also be required in states that have adopted all or parts of California's vehicle emissions standards. Please check state and local laws for specific converter replacement requirements.


  • Made in the USA
  • Excellent flow characteristics
  • Flowmaster Quality
  • Engineered for Maximum Efficiency

About Flowmaster

Flowmaster® is a household name, and for good reason. They've built legendary exhaust systems and mufflers for decades, and now offer performance air intakes, catalytic converters, and headers to give your hot rod performance to match the iconic Flowmaster sound.

Air Tube AdaptableNo
Assembly Length (in)44
Assembly Width (in)5
Body Length (in)11
Body MaterialStainless Steel
Body Width (in)5
Brand Flowmaster
CARB (California) CompliantYes
CARB EO#D-665-17
Catalytic Converter FormatOBDII
Emission Code1
Exhaust Component Mount TypeFactory Mount
Exhaust Inlet Connection Type2 Bolt Flange
Exhaust Outlet Connection TypeFactory
Inlet Diameter (in)2.5
Outlet Diameter (in)2.5
Oxygen Sensor LocationPre and Post Catalyst
Product TypeCatalytic Converter
Substrate MaterialCeramic
TypeCARB Certified Direct-Fit
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number630503

This part is legal for sale and use on Emissions Controlled Vehicles, in all 50 states, when used in accordance with the manufacturers application guide because it has a California Air Resources Board (CARB) Executive Order (EO) number.

The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle
Fits 2.5L engine only. CARB EO# D-665-17

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    Some parts are not legal for use in California or other states with similar regulations.