Honda OEM Rear Main Seal B16A B18C B-Series VTEC

Genuine OEM Honda / Acura B-Series Rear Main Seal 91214-PLE-003

This Genuine OEM Honda / Acura rear main seal is used on select B-Series engine applications.

Honda / Acura part number 91214-PLE-003 is cataloged as Oil Seal (80X100X10) (Nok) and is commonly searched as a rear main seal, rear crankshaft seal, crankshaft oil seal, rear crank oil seal, or flywheel-side crank seal.

The rear main seal is located at the rear of the engine, behind the flywheel or flexplate area. It is commonly replaced during clutch replacement, transmission removal, engine rebuilds, rear main seal housing service, or when oil seepage is found near the engine and transmission mating area.

What’s Included

1 Genuine OEM Honda / Acura rear main seal
OEM part number: 91214-PLE-003
Catalog name: Oil Seal (80X100X10) (Nok)
Sold individually

Engine Fitment

Fits select Honda / Acura B-Series applications, including:

B16A
B16A2
B16A3
B18B1
B18C
B18C1
B18C5
B18C6

Common Applications

Commonly used on select Honda / Acura B-Series applications, including:

1999–2000 Honda Civic Si
1994–1997 Honda Del Sol VTEC
1990–2001 Acura Integra
Select B-Series engine swap applications

Installation Note

The rear main seal is located behind the transmission-side crankshaft area, so it is usually serviced when the transmission, clutch, or flywheel is already removed. Always install carefully using the correct service procedure to avoid damaging the seal lip, crankshaft surface, or seal bore.

Additional Product Information

This Genuine OEM Honda / Acura rear main seal is a direct replacement crankshaft oil seal for select B-Series engines. It is commonly replaced during clutch service, transmission removal, engine reseal work, or B-Series engine rebuilds, especially on older vehicles where the original seal has hardened, worn, or started to seep oil.