Buick LaCrosse Oxygen Sensor - Select Year

Quality: OEM
- (After Catalyst) - (After Catalyst)
(Flex- Fuel Vehicles Only) - (Before Catalyst) - Before Catalyst - Front - 2 Required Rear - 2 Required - w/ California Emissions (Position 1) - w/ California Emissions (Postion 1) -

Quality: OEM
- (After Catalyst) - (After Catalyst)
(Flex- Fuel Vehicles Only) - (Before Catalyst) - Before Catalyst - Front - 2 Required Rear - 2 Required - w/ California Emissions (Position 1) - w/ California Emissions (Postion 1) -

Direct Fit - - After Catalyst - After Catalyst
Right - California - Position 2 & 3 : Federal -Front/Rear - Front & Rear - Front - 2 Required Rear - 2 Required - Position 2 & Position 3 - w/ Calif, Position 2 & 3 w/ Federal, Front/Rear -

Direct Fit - - After Catalyst - After Catalyst
Right - California - Position 2 & 3 : Federal -Front/Rear - Front & Rear - Front - 2 Required Rear - 2 Required - Position 2 & Position 3 - w/ Calif, Position 2 & 3 w/ Federal, Front/Rear -