Walker 14663 Catalytic Converter - Left
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Walker
 EPA

Walker 14663 Catalytic Converter - Left

Brand Walker 14663
Position Left
Grade Type Premium
Overall Length 35.500
Catalyst Type Eco iii
Inlet Gasket Qty None
Inlet Hardware None
Inlet Type A 2 bolt spinner
O2 Sensor Ports 2
Outlet Gasket Qty None
Outlet Hardware None
Outlet Type A 2.5" od
Type Federal / epa direct-fit undercar
Product line EPA
Fits Lincoln · 2 vehicles

EPA direct-fit. Built to meet federal standards with a direct-fit design.

Premium grade. Delivers a higher-end replacement for dependable exhaust performance.

ECO III catalyst. Engineered for efficient emissions control in a catalytic converter.

Cross-references Walker Exhaust 52507 for the same application. See all 1.

$391.54Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Order total $391.54
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
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Walker EPA Direct-Fit Catalytic Converter

Walker EPA Part Number 14663 is a premium direct-fit catalytic converter for OBDII vehicles, built for emissions compliance and steady exhaust performance. It is engineered for the left side of the 2005-2006 Lincoln Navigator and follows a Federal / EPA direct-fit undercar design for straightforward replacement.

Key Features

  • Premium grade catalytic converter for emissions system service
  • ECO III catalyst type
  • Federal / EPA direct-fit undercar configuration
  • 2-bolt spinner inlet and 2.5" OD outlet
  • Two O2 sensor ports for the specified application
  • Overall length: 35.500 inches
  • Fits 2005-2006 Lincoln Navigator, left

Product Details

Walker EPA 14663 is part of the Walker Ultra Direct-Fit Catalytic Converter line, which is built for import and domestic OBDII vehicles from 1996 and newer. For the 2005-2006 Lincoln Navigator left-side application, this converter is configured to match the vehicle’s exhaust layout and emissions requirements while maintaining a direct-fit replacement format. This part cross-references Walker Exhaust 52507 for the same application.

Common Repair Uses

  • Replacing a failed or restricted catalytic converter
  • Addressing emissions test failures tied to catalyst efficiency
  • Restoring exhaust flow after internal substrate damage
  • Correcting check engine light conditions related to catalyst performance
  • Servicing the left-side exhaust path on a 2005-2006 Lincoln Navigator

Installation Notes

Verify the left-side fitment, inlet style, outlet diameter, and O2 sensor port locations before installation. Because this is a direct-fit undercar converter, matching the original exhaust routing and sensor placement is important for proper installation and emissions system operation. Confirm all vehicle-specific emissions requirements before replacing the part.

Quality Assurance

Walker EPA products are built to meet EPA standards for the listed application and are intended for use on 1996-and-newer OBDII vehicles where Federal / EPA compliance is required.

Related reading

This part fits 2 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2006LincolnNavigator5.4LV8LeftEPA
2005LincolnNavigator5.4LV8LeftEPA
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Walker Exhaust — 52507