Direct Fit; Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details. Federal and California Emissions
Universal Fit; EPA OBDII By Design Unit Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details. Federal and California Emissions
Universal Fit; EPA OBDII By Design Unit Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details. Federal and California Emissions
Universal Fit; EPA Enhanced OBDII By Design Unit Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details. Federal and California Emissions
Undercar Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions)
Not legal for sale or installation in California, Colorado or New York. Cutting and Welding Required
Not legal for sale or installation in California, Colorado or New York. Cutting and Welding Required
Undercar Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions)
Not legal for sale or installation in California, Colorado or New York. Cutting and Welding Required
Not legal for sale or installation in California, Colorado or New York. Cutting and Welding Required
Not legal for sale or installation in California, Colorado or New York. Cutting and Welding Required
Not legal for sale or installation in California, Colorado or New York. Cutting and Welding Required
; Undercar Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions)
Federal, 47-State Only, Not legal for sale in CA, NY or ME Direct Fit
Cutting and Welding Required
Cutting and Welding Required
Direct Fit; Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details. Federal and California Emissions
Undercar Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions)
91 Series Engine Family Number (EFN) 3GMXA04.2187 CARB Executive Order D-280-101 ; Universal Fit - CARB Legal Note: In Compliance with CARB Emissions Requirements 2 in Inlet ID; 2 in Outlet ID; 16.5 in OAL ALL
Undercar Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions)
91 Series Engine Family Number (EFN) 4GMXT05.3170 CARB Executive Order D-280-101 ; Universal Fit - CARB Legal Note: In Compliance with CARB Emissions Requirements 2.25 in Inlet ID; 2.25 in Outlet ID; Round Body; 16 in OAL ALL
CARB Executive Order D-182-69 Engine Family Number (EFN) 3GMXT05.3183 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. Universal Type Modifications and/or Additional Parts May Be Required for Installation
776 Series 4 in Round Body Engine Family Number (EFN) 4GMXT05.3170 CARB Executive Order D-798-15 ; Universal Fit - CARB Legal Note: In Compliance with CARB Emissions Requirements 2.25 in Inlet ID; 2.25 in Outlet ID; w/Midbed O2 Fitting ALL
CARB Executive Order D-193-100 Engine Family Number (EFN) 3GMXT05.3183 Cutting and Welding Required Legal For Sale In All 50 States Including California, Colorado and New York (CARB Certified)
CARB Executive Order D-193-100 Engine Family Number (EFN) 3GMXT05.3183 Cutting and Welding Required
CARB Executive Order D-182-47 Engine Family Number (EFN) 3GMXT05.3183 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. Universal Type Modifications and/or Additional Parts May Be Required for Installation
Undercar; EXT Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions)
Not legal for sale or installation in California, Colorado or New York.
Not legal for sale or installation in California, Colorado or New York.
Not legal for sale or installation in California, Colorado or New York.
Not legal for sale or installation in California, Colorado or New York.
Not legal for sale or installation in California, Colorado or New York.
Not legal for sale or installation in California, Colorado or New York.
CARB Executive Order D-193-100 Engine Family Number (EFN) 3GMXT04.2185 Cutting and Welding Required Legal For Sale In All 50 States Including California, Colorado and New York (CARB Certified)
776 Series 4 in Round Body Engine Family Number (EFN) 4GMXT04.2185 CARB Executive Order D-798-15 ; Universal Fit - CARB Legal Note: In Compliance with CARB Emissions Requirements 2.5 in Inlet ID; 2.5 in Outlet ID ALL
Not legal for sale or installation in California, Colorado or New York.
CARB Executive Order D-193-100 Engine Family Number (EFN) 3GMXT04.2185 Cutting and Welding Required
Not legal for sale or installation in California, Colorado or New York.
Undercar Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions)
Not legal for sale or installation in California, Colorado or New York.
Not legal for sale or installation in California, Colorado or New York.
CARB Executive Order D-193-156 Engine Family Number (EFN) 4GMXT04.2187 Cutting and Welding Required Legal For Sale In All 50 States Including California, Colorado and New York (CARB Certified)
CARB Executive Order D-193-156 Engine Family Number (EFN) 4GMXT04.2187 Cutting and Welding Required
CARB Executive Order D-193-143 Engine Family Number (EFN) 4GMXT04.2185 Cutting and Welding Required Legal For Sale In All 50 States Including California, Colorado and New York (CARB Certified)
CARB Executive Order D-193-143 Engine Family Number (EFN) 4GMXT04.2185 Cutting and Welding Required Legal For Sale In All 50 States Including California, Colorado and New York (CARB Certified)
CARB Executive Order D-193-143 Engine Family Number (EFN) 4GMXT04.2185 Cutting and Welding Required
CARB Executive Order D-193-143 Engine Family Number (EFN) 4GMXT04.2185 Cutting and Welding Required
CARB Executive Order D-193-144 Engine Family Number (EFN) 6GMXT04.2186 Cutting and Welding Required
CARB Executive Order D-193-144 Engine Family Number (EFN) 6GMXT04.2186 Cutting and Welding Required Legal For Sale In All 50 States Including California, Colorado and New York (CARB Certified)
CARB Executive Order D-193-143 Engine Family Number (EFN) 4GMXT04.2185
CARB Executive Order D-193-143 Engine Family Number (EFN) 4GMXT04.2185 Legal For Sale In All 50 States Including California, Colorado and New York (CARB Certified)
CARB Executive Order D-193-144 Engine Family Number (EFN) 6GMXT04.2186
CARB Executive Order D-193-144 Engine Family Number (EFN) 6GMXT04.2186 Legal For Sale In All 50 States Including California, Colorado and New York (CARB Certified)
CARB Executive Order D-193-136 Engine Family Number (EFN) 4GMXT05.3170 Legal For Sale In All 50 States Including California, Colorado and New York (CARB Certified)
CARB Executive Order D-193-136 Engine Family Number (EFN) 4GMXT05.3170
Browse our selection of quality catalytic converter parts designed specifically for your Isuzu Ascender. We carry options across multiple trim levels, body styles, and engine configurations to ensure a perfect fit.
Base · LS · Limited · S
Sport Utility
L6 4.2L · V8 5.3L
Automatic