The SL73818 oil pump gasket is an aircraft engine sealing gasket used at the oil pump mounting interface. It provides a precise oil-tight seal between the oil pump body and the engine case, preventing oil leakage while maintaining correct alignment and surface contact under vibration and thermal cycling.

This part is listed as an alternate to LW13353, meaning it replaces the original OEM Lycoming gasket in compatible engine configurations where applicable.

It is commonly used during oil pump installation, replacement, or engine overhaul work.

Key features include:

PMA oil pump mounting gasket
Alternative to LW13353 OEM part
Oil-resistant gasket material (composite/fiber depending on revision)
Maintains oil-tight seal at pump-to-case interface
Prevents oil leakage under pressure and vibration
Precision-cut for correct alignment and fitment
Designed for aviation piston engine lubrication systems
Compatible with applicable Continental/Lycoming engine configurations (IPC-dependent use)
Used in engine assembly, maintenance, and overhaul procedures
Aviation-grade consumable sealing component