Honda Crankshaft Rear Main Seal OEM 91214-PNA-014 – 80×98×10 (Gearbox Side)

Genuine Honda rear main seal (gearbox side) for K-series and R-series engines. Restores factory sealing between the crankshaft and rear cover/transmission interface, preventing oil leaks around the flywheel/flexplate area.

Specs and Interchange

• OEM Part No.: 91214-PNA-014
• Size: 80 × 98 × 10 mm
• Application: Honda K-series & R-series engines (transmission side)
• Interchangeable with OEM numbers:

91214-PNA-014, 91214-PL2-004, 91214-P8A-A01, 91214-PWA-003, 91214-PY3-003,
91214-PH7-013, 91214-PH7-003, 91214-PWA-Y01, 91214-RTA-004, 91214-RZA-004, 91214-RNB-A01

Why OEM

• Exact fit – correct OD/ID and garter spring as per factory spec.
• Material resistance – compound designed for K/R operating temps and crankcase conditions.
• Durability – stable sealing over high mileage and RPM.

Install notes

• Press-fit on clean, dry bore; do not grease the outer shell.
• Lightly oil the sealing lip before sliding over the crankshaft.
• Apply a tiny bead of sealant only at the block/rear cover joint corners (typical K/R “corners”).
• Check PCV system — excessive crankcase pressure shortens seal life.

FAQ

Does it fit all K and R engines?
It covers a wide range of K-series and R-series applications on the gearbox side. Always verify by OEM number for your exact model.

Typical leak symptoms?
Oil traces between engine and transmission, oily bellhousing bottom, hot oil smell.

Transmission removal required?
Yes — access is from the transmission side.

Aftermarket vs OEM?
Aftermarket seals exist, but genuine Honda typically offers best fit and longevity for K/R engines.