Fel-Pro BS 40520 One-Piece Rear Main Seal Set for Marine 5.7L 4.3L - Rubber

The Fel-Pro BS 40520 is a Rubber one-piece rear main seal set that seals the crankshaft where it exits the engine block, sealing the rotating crank journal against oil leaks at the rear main bearing, restoring a clean sealing surface for a reliable, oil-tight seal.

Marine Application: Pleasure Craft Inboard Engine OMC Marine 250/5.7 Litre (220 HP) (Rear); Pleasure Craft Inboard Engine Mercury Marine 185 (185 HP) (Rear); Pleasure Craft Inboard Engine Mercury Marine 5.7L Comp Ski (250 HP) (Rear); Pleasure Craft Inboard Engine OMC Marine 260 (260 HP) (Rear); Pleasure Craft Inboard Engine Mercury Marine 300 (300 HP) (Rear); Pleasure Craft Inboard Engine OMC Marine 250/5.7 Litre (260 HP) (Rear); Pleasure Craft Inboard Engine Mercury Marine 5.7L Bravo (240 HP) (Rear); Pleasure Craft Inboard Engine OMC Marine 4.3 Litre (175 HP) (Rear); Pleasure Craft Inboard Engine Mercury Marine 5.7L Blue Water Inboard (250 HP) (Rear); Pleasure Craft Inboard Engine OMC Marine 250/5.7 Litre (270 HP) (Rear); Pleasure Craft Inboard Engine Mercury Marine 5.7L Comp Ski (260 HP) (Rear); Pleasure Craft Inboard Engine Mercury Marine 5.7L Bravo (270 HP) (Rear); Pleasure Craft Inboard Engine OMC Marine 250 King Cobra (235 HP) (Rear); Pleasure Craft Inboard Engine Mercury Marine 4.3L (175 HP) (Rear); Pleasure Craft Inboard Engine Mercury Marine 5.7L Blue Water Inboard (260 HP) (Rear).

Important Notes:

• Lubricate the seal lip and crankshaft journal lightly before installation; never run the lip dry.
• Verify one-piece versus two-piece rear main seal design against your engine before ordering.
• Rear main seal replacement usually requires removing the oil pan or transmission - inspect the oil pan gasket and rear main bearing while the area is open.

WARNING: WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or reproductive harm.