Nissan Pulsar GTiR RNN14 Engine Block Rear Main Oil Seal Retainer Locating Dowel SR20DET

The Nissan Pulsar GTiR RNN14 Engine Block Rear Main Oil Seal Retainer Locating Dowel for SR20DET engines is a precision-engineered OEM component designed to ensure perfect alignment between the engine block and the rear main oil seal retainer housing. Installed in the machined hole at the lower rear of the cylinder block near the oil pan joint, this small steel dowel, approximately 5mm in diameter and 12mm long, guarantees the housing seats accurately during assembly, preventing misalignment that could compromise seal integrity. Proper alignment of the rear main seal retainer is vital for maintaining consistent crankshaft lubrication and oil pressure, particularly under the high torque and stress conditions typical of SR20DET engines. Even small deviations can result in premature seal wear, oil leaks, or bearing damage, making this dowel essential for reliable performance and long-term engine durability. This locating dowel is commonly replaced during rear main seal servicing, clutch r