S15/T15 Sonoma P/U 2WD V6-4.3L VIN X (1998)
1. Install a NEW oil filter bypass valve.
1.1. Install the bypass valve into the oil gallery bore until slightly below flush with the surface of the block.
1.2. Using a pointed punch, stake the block area around the bypass valve. Stake in three locations 120 degrees apart.
2. Install a NEW seal (O-ring) into the groove in the oil filter adapter.
3. Install the oil filter adapter with a NEW oil filter adapter gasket.
NOTICE: Refer to Fastener Notice in Service Precautions.
