Montesa 4RT filter cover o ring. Montesa recommend you change these when you replace the oil filter.

Montesa 4RT filter cover o ring. Montesa recommend you change these when you replace the oil filter.

Rubber seal that goes around the fuel cap on the tank on all 4rt models.

Genuine Montesa 4RT oil filter / flywheel cover gasket, needed for when you change the oil filter.

Water pump o-ring to seal the outer water pump case to the main crank case.

Genuine Montesa water pump shaft bearing.

Genuine Montesa water pump impeller. Fits 315 and 4rt models.

Genuine Montesa water pump oil seal.

Genuine water pump seal that fits both the 315 and 4rt models.