GM Service Manual Online
For 1990-2009 cars only

Application

Part/ Number

Spark Plugs and Gap-Leaded

  • Golden

BPR5EY; 0.8 mm (0.031 in)

  • Champion

RN9YC; (0.031 in)

Bosch

WR8DC; (0.031 in)

Spark Plugs and Gap-Unleaded

  • Golden

BPR5EY-11; 1.1 mm (0.43 in)

  • Champion

RN9YC4; 1.1 mm (0.43 in)

  • Bosch

WR8DCX; 1.2 mm (0.047 in)