Walker 84798 Catalytic Converter
OE Quality 60-Day Returns
Walker
 CalCat

Walker 84798 Catalytic Converter

Brand Walker 84798
Mounting Hardware Included No
Universal Or Specific Fit Specific
Grade Type Premium
Body Shape Round
Outlet Type 2 bolt welded flange
Body Height 4.000
Body Length 8.000
Body Width 4.000
Inlet Quantity 2
Body Material Stainless steel
Outlet Quantity 1
California Air Resources Board (CARB) Certified Yes
Overall Length 36.60
Sensor Port Count 4
New York Certified Yes
LH Inlet Outside Diameter 2.495
LH Inlet Type 3 bolt welded flange
O2 Sensor Ports 4
Outlet Hardware No
Outlet Outside Diameter 3.50
RH Inlet Inside Diameter 3.598
RH Inlet Type 3-bolt loose flange w/spherical flare
Shape Round
Product line CalCat
Fits Cadillac, Chevrolet, and GMC · 24 vehicles

CARB certified. Built for emissions-controlled applications that require compliant exhaust performance.

Direct-fit design. Delivers an OE-style fit for specific exhaust replacement applications.

Stainless steel body. Provides durable exhaust construction with a round converter housing.

Cross-references AP Exhaust 776408 for the same application. See all 1.

$1,185.90Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $1,185.90
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Catalytic Converter options

Direct-Fit Catalytic Converter

Walker CalCat 84798 is a premium direct-fit catalytic converter built for specific applications that require CARB compliance. It delivers an OE-style fit and is engineered for OBDII and non-OBD vehicles where emissions performance and proper exhaust connection matter.

  • CARB certified for regulated emissions applications.
  • Direct-fit design for a precise OE-style installation.
  • Stainless steel body for corrosion resistance in exhaust service.
  • Round body with a 2-bolt welded flange outlet and dual inlet configuration.
  • Includes four O2 sensor ports for sensor-equipped exhaust systems.

Fitment and Application

Compatible with 2007-2010 Cadillac Escalade, 2009-2010 Chevrolet Silverado 1500, 2007-2010 GMC Sierra 1500, 2007-2010 GMC Yukon, 2007-2010 GMC Yukon XL 1500, 2008-2009 Chevrolet Tahoe, 2007-2008 Cadillac Escalade ESV, and 2007-2008 Cadillac Escalade EXT. Fits 2007-2010 Cadillac Escalade, N/A. Fits 2009-2010 Chevrolet Silverado 1500, N/A. Fits 2007-2010 GMC Sierra 1500, N/A. Fits 2007-2010 GMC Yukon, N/A. Fits 2007-2010 GMC Yukon XL 1500, N/A. Fits 2008-2009 Chevrolet Tahoe, N/A. Fits 2007-2008 Cadillac Escalade ESV, N/A. Fits 2007-2008 Cadillac Escalade EXT, N/A.

What It Helps Address

  • Failed emissions testing from a worn or non-compliant converter.
  • Restricted exhaust flow caused by internal catalyst deterioration.
  • Check engine lights related to catalyst efficiency or sensor-port issues.
  • Fitment problems when replacing a converter with a non-specific design.

Installation Notes

Verify inlet and outlet flange style, sensor-port count, and overall length before installation. This unit uses a specific fit design and does not include mounting hardware. Confirm the vehicle’s emissions requirements and application details before replacement.

Quality Assurance

Walker CalCat converters are designed, tested, and validated to meet CARB standards. The CalCat line focuses on direct-fit exhaust replacement with OE-style fitment for emissions-controlled applications. Part number 84798 is also referenced as AP Exhaust 776408 for the same application.

Related reading

This part fits 24 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersNotes
2010CadillacEscalade6.2LV8CalCat
2010ChevroletSilverado 15006.2LV8CalCat
2010GMCSierra 15006.2LV8CalCat
2010GMCYukon6.2LV8CalCat
2010GMCYukon XL 15006.2LV8CalCat
2009CadillacEscalade6.2LV8CalCat
2009ChevroletSilverado 15006.2LV8CalCat
2009ChevroletTahoe6.2LV8CalCat
2009GMCSierra 15006.2LV8CalCat
2009GMCYukon6.2LV8CalCat
2009GMCYukon XL 15006.2LV8CalCat
2008CadillacEscalade6.2LV8CalCat
2008CadillacEscalade ESV6.2LV8CalCat
2008CadillacEscalade EXT6.2LV8CalCat
2008ChevroletTahoe6.2LV8CalCat
2008GMCSierra 15006.2LV8CalCat
2008GMCYukon6.2LV8CalCat
2008GMCYukon XL 15006.2LV8CalCat
2007CadillacEscalade6.2LV8CalCat
2007CadillacEscalade ESV6.2LV8CalCat
2007CadillacEscalade EXT6.2LV8CalCat
2007GMCSierra 15006.2LV8CalCat
2007GMCYukon6.2LV8CalCat
2007GMCYukon XL 15006.2LV8CalCat
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AP Exhaust — 776408