Walker
CalCat

Walker 83178 Catalytic Converter

Brand Walker 83178
Mounting Hardware Included No
Universal Or Specific Fit Specific
Grade Type Regular
Body Shape Round
Inlet Type 2 bolt welded flange
Outlet Type 2 bolt welded flange
Body Height 4
Body Height 4.000
Body Length 8
Body Length 8.000
Body Width 4
Body Width 4.000
Inlet Quantity 1
Body Material Stainless steel
Outlet Quantity 1
California Air Resources Board (CARB) Certified Yes
Substrate Material Ceramic
Overall Length 87.25
Overall Length 87.250
Air Tube No
Air Tube Count No
Converter Quantity 2
Inlet 1 Type 2 bolt welded flange
Inlet Type 2 bolt welded flange
Max Year Covered 2009
Min Year Covered 2009
Most Popular Make / Model Toyota corolla
Most Popular Year 2009
Outlet 1 Outside Diameter 1.888
Outlet 1 Type 2 bolt welded flange
Product line CalCat
Fits Toyota · 2 vehicles

CARB certified. Validated to meet California emissions standards.

Direct-fit design. Delivers a precise OE-style fit.

Stainless steel body. Ceramic substrate helps support efficient exhaust treatment.

Cross-references 551496 for the same application. See all 1.

$727.20Free shipping
Out of stock
Step 1 — Confirm fitment
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Step 2 — Quantity
Order total $727.20
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Walker CalCat Direct-Fit Catalytic Converter

Walker CalCat Part Number 83178 is a direct-fit catalytic converter built for CARB-compliant replacement on select 2009 Toyota Corolla and 2009 Toyota Matrix applications. It is designed for a precise OE-style fit and is engineered for vehicles that require California Air Resources Board certification.

Key Features

  • Direct-fit catalytic converter for specific vehicle applications
  • CARB certified for sale and use in California and other CARB-compliant states
  • Stainless steel body construction
  • Ceramic substrate material
  • Round body shape with 2-bolt welded flange inlet and outlet
  • Post-catalyst oxygen sensor location
  • OE-style fit for 2009 Toyota Corolla and 2009 Toyota Matrix
  • Walker CalCat line focuses on CARB-compliant replacement converters for OBDII and non-OBD vehicles

Detailed Description

Walker CalCat 83178 is a specific-fit catalytic converter designed for 2009 Toyota Corolla and 2009 Toyota Matrix models. The unit uses a stainless steel body, ceramic substrate, and 2-bolt welded flange connections to match the original exhaust layout as closely as possible. This converter is CARB Executive Order D-182-62 certified and is legal for use in California and other states that require CARB-compliant replacement converters. For the listed applications, additional parts 31639 and 31357 are required to complete installation. This part cross-references Monroe Shocks & Struts 551496 for the same application.

Common Issues This Part Can Address

  • Failed emissions inspection due to a worn or inefficient catalytic converter
  • Check engine light related to catalyst efficiency codes
  • Exhaust restriction caused by internal converter breakdown
  • Replacement need after corrosion or physical damage to the converter body
  • CARB compliance requirement for California and similar emissions-regulated states

Installation Notes and Tips

Fits 2009 Toyota Corolla, N/A. Fits 2009 Toyota Matrix, N/A. Verify engine family number 9TYXV01.8BEA before installation and confirm state emissions requirements before purchase. This direct-fit converter uses 2-bolt welded flange inlet and outlet connections and places the oxygen sensor post-catalyst. Additional parts 31639 and 31357 are listed as needed to complete installation.

Quality Assurance

Walker CalCat converters are designed, tested, and validated to meet CARB standards for the listed applications. Part Number 83178 is built for emissions compliance and OE-style fit on the specified Toyota Corolla and Toyota Matrix models.

This part fits 2 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2009ToyotaCorolla1.8LL4N/ACARB Executive Order D-182-62; Engine Family Number (EFN) 9TYXV01.8BEA; 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.; Additional part(s) needed to complete installation - 31639 and 31357; Direct Fit Type; CalCat
2009ToyotaMatrix1.8LL4N/ACARB Executive Order D-182-62; Engine Family Number (EFN) 9TYXV01.8BEA; 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.; Additional part(s) needed to complete installation - 31639 and 31357; Direct Fit Type; CalCat
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
551496