Walker
CalCat

Walker 83552 Catalytic Converter - Right

Brand Walker 83552
Position Right
Mounting Hardware Included No
Universal Or Specific Fit Specific
Grade Type Regular
Body Shape Small oval and round
Inlet Type 2 bolt loose flange & pipe connection
Outlet Type 2 bolt loose flange w/flare
Inlet Inside Diameter 2.5
Body Length 8
Body Length 8.000
Inlet Quantity 2
Body Material Stainless steel
Outlet Inside Diameter 3.671
Outlet Quantity 1
California Air Resources Board (CARB) Certified Yes
Substrate Material Ceramic
Overall Length 45.125
Air Tube No
Air Tube Count No
Body Shape Small oval and round
Converter Quantity 2
Inlet 1 Inside Diameter 2.5
Inlet 1 Inside Diameter 2.500
Inlet 1 Type Pipe connection
Inlet 2 Type 2 bolt loose flange with spherical flare
Inlet Quantity 2
Inlet Type 2 bolt loose flange with spherical flare
Inlet Type Pipe connection
Max Year Covered 2004
Min Year Covered 2003
Most Popular Make / Model Ford expedition
Product line CalCat
Fits Ford · 3 vehicles

CARB certified. Built to meet California emissions standards with assured compliance.

Direct-fit design. Delivers a precise OE-style fit for easier installation.

Ceramic substrate. Helps support efficient exhaust flow and reliable catalyst performance.

$1,009.66Free shipping
In stock · usually ships same day before 1pm CST
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Step 2 — Quantity
Order total $1,009.66
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 83552 is a direct-fit catalytic converter built for CARB-compliant replacement needs on select Ford Expedition applications. It is designed for precise OE-style fitment and is legal for sale and use in California and other states that require CARB-certified replacement converters.

The Walker CalCat product line focuses on direct-fit emissions replacement parts for OBDII and non-OBD vehicles, with application-specific fitment that helps simplify exhaust service on regulated vehicles.

Key Features

  • CARB certified for regulated emissions applications
  • Direct-fit design for OE-style installation
  • Stainless steel body construction
  • Ceramic substrate material
  • Small oval and round body shape
  • 2.5-inch inlet inside diameter
  • 3.671-inch outlet inside diameter
  • Pre- and post-catalyst oxygen sensor location
  • Specific fit for select Ford Expedition right-side applications

Detailed Description

Walker CalCat 83552 is a catalytic converter engineered for 2003-2004 Ford Expedition right-side applications that require CARB compliance. It uses a direct-fit layout with a 2-bolt loose flange and pipe connection at the inlet and a 2-bolt loose flange with spherical flare at the outlet, supporting OE-style exhaust alignment. The stainless steel body and ceramic substrate are selected for emissions service in regulated environments, while the CARB Executive Order D-182-69 confirms legal use in California and other states with CARB replacement converter requirements. Walker 83552 is a practical choice for owners searching for a 2003 Ford Expedition right catalytic converter or a 2004 Ford Expedition CARB catalytic converter replacement.

This part cross-references 31622 for the same application.

What It Helps Address

  • Failed emissions testing related to catalytic converter efficiency
  • Check engine light concerns tied to catalyst performance codes
  • Exhaust restriction caused by a worn or damaged converter
  • Replacement needs for CARB-regulated Ford Expedition exhaust service
  • Direct-fit repair requirements on right-side exhaust applications

Installation Notes and Tips

Compatible With 2003 Ford Expedition, right; and 2004 Ford Expedition, right. Verify the engine family number and CARB Executive Order requirements before installation. Additional part 31622 is needed to complete installation. Confirm inlet and outlet flange style, oxygen sensor placement, and exhaust routing before beginning service. Professional installation is recommended for proper sealing and emissions compliance.

Quality Assurance

Walker CalCat converters are designed, tested, and validated to meet CARB standards for approved applications. Part Number 83552 is built for regulated emissions service and OE-style fitment on listed Ford Expedition models.

This part fits 3 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2004FordExpedition5.4LV8RightCARB Executive Order D-182-69; Engine Family Number (EFN) 4FMXT05.4RFC; 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: 31622; Direct Fit Type; CalCat
2003FordExpedition5.4LV8RightCARB Executive Order D-182-69; Engine Family Number (EFN) 3FMXT05.4RFC; 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: 31622; Direct Fit Type; CalCat
2003FordExpedition5.4LV8RightCARB Executive Order D-182-69; Engine Family Number (EFN) 3FMXT05.4RF5; 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: 31622; Direct Fit Type; CalCat