NTK OE Identical Oxygen Sensor 21002 - GM/Isuzu

Thimble type sensors feature a ceramic element that projects into the exhaust system and becomes electrically conductive at high temperature. The sensor element then sends voltage signals back to the engine management system to regulate the air to fuel ratio, for optimum efficiency. All NGK/NTK oxygen sensors are platinum coated for durability and are individually tested to guarantee quality. MPN: 21002 Fitment Automotive  1999  Chevrolet  Pontiac  1998  Buick  Chevrolet  GMC  Isuzu  Oldsmobile Pontiac  1997  Buick  Chevrolet  GMC  Isuzu  Oldsmobile  Pontiac  1996  AM General  Buick  Chevrolet  GMC Isuzu  Oldsmobile  Pontiac  1995  AM General  Buick  Chevrolet  GMC  Oldsmobile  Pontiac  1994  Buick  Chevrolet  Geo  GMC  Isuzu  Oldsmobile  Pontiac  Suzuki  1993  Buick  Cadillac  Chevrolet  Geo  GMC  Isuzu  Oldsmobile  Pontiac  Suzuki  1992  Buick  Cadillac  Chevrolet  Geo GMC  Isuzu  Oldsmobile