Oxygen Sensor - Bosch Design
Bulletin 87-6E-11Date Mar. '87
Ref. No. 87-084-6E
Corp. Ref. No. 786502
SUBJECT: BOSCH OXYGEN SENSOR
MODELS AFFECTED: 1987 SOMERSETS AND SKYLARKS WITH THE L68 2.5L L4 ENGINE (VIN CODE U) AND 5 SPEED MANUAL TRANSMISSION
1987 Somersets and Skylarks with 2.5L L4 engines and 5 speed manual transmissions use a Bosch Oxygen Sensor, Service Part Number 10042186, available from General Motors Service Parts Operations.
Always replace the original Bosch part with the Bosch service part -- under no circumstances substitute with an AC Oxygen Sensor.