
PROX Crankshaft Oil Seal 40x55x10mm — Manufacturer reference: 41.2-40091
This single oil seal is designed for sealing the crankshaft on motocross models. This PROX seal, with exact dimensions of 40x55x10 mm, is engineered to prevent oil leaks at the shaft exit and protect the engine case from dirt and debris encountered in off-road conditions. Compact and easy to install, it fits on the listed engines without modification.
Compatibility (examples):
Workshop advice: before installation, check the seal seat and clean the surface. Use a guide or tube to push the seal in straight to avoid folds and ensure a clean installation. Ideal for engine revision operations or replacement during crankshaft disassembly.