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
with Federal/California Emissions System Not legal for sale or use in California and other CARB-compliant states. Legal in Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details. Ultra Universal Type Modifications and/or Additional Parts May Be Required for Installation
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
Cutting and Welding Required
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
Cutting and Welding Required
with Federal/California Emissions System Not legal for sale or use in California and other CARB-compliant states. Legal in Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details. Ultra Universal Type Modifications and/or Additional Parts May Be Required for Installation
91 Series Engine Family Number (EFN) 3GMXT03.4141 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
91 Series Engine Family Number (EFN) 3GMXT03.4141 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
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 use in California Illegal for installation in NY on vehicles equipped with California emission systems
CARB Executive Order D-182-69 Engine Family Number (EFN) XGMXT03.4142 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
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 use in California Illegal for installation in NY on vehicles equipped with California emission systems
Not legal for sale or installation in California, Colorado or New York.
776 Series 4 in Round Body Engine Family Number (EFN) 2GMXT03.4142 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
CARB Executive Order D-193-100 Engine Family Number (EFN) 3GMXT03.4141 Cutting and Welding Required
CARB Executive Order D-193-100 Engine Family Number (EFN) 3GMXT03.4141 Cutting and Welding Required Legal For Sale In All 50 States Including California, Colorado and New York (CARB Certified)
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-182-47 Engine Family Number (EFN) 3GMXT03.4141 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
CARB Executive Order D-193-136 Engine Family Number (EFN) YGMXT03.4142
CARB Executive Order D-193-136 Engine Family Number (EFN) 3GMXT03.4141 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) 3GMXT03.4141
CARB Executive Order D-193-143 Engine Family Number (EFN) 5GMXX03.8148 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) 5GMXX03.8148 Cutting and Welding Required Legal For Sale In All 50 States Including California, Colorado and New York (CARB Certified)
CARB Executive Order D-182-47 Engine Family Number (EFN) XGMXT03.4142 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
CARB Executive Order D-193-143 Engine Family Number (EFN) 5GMXX03.8148 Cutting and Welding Required
CARB Executive Order D-193-143 Engine Family Number (EFN) 5GMXX03.8148 Cutting and Welding Required
CARB Executive Order D-193-145 Engine Family Number (EFN) 1GMXT03.4142 Legal For Sale In All 50 States Including California, Colorado and New York (CARB Certified)
CARB Executive Order D-193-145 Engine Family Number (EFN) 1GMXT03.4142
CARB Executive Order D-193-143 Engine Family Number (EFN) 5GMXX03.8148 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) 5GMXX03.8148
CARB Executive Order D-193-145 Engine Family Number (EFN) 2GMXT03.4142 Legal For Sale In All 50 States Including California, Colorado and New York (CARB Certified)
CARB Executive Order D-193-145 Engine Family Number (EFN) 2GMXT03.4142
Browse our selection of quality catalytic converter parts designed specifically for your Pontiac Montana. We carry options across multiple trim levels, body styles, and engine configurations to ensure a perfect fit.
Base · SV6
Mini Cargo Van · Mini Passenger Van
V6 3.4L · V6 3.5L · V6 3.9L
Automatic
