Keep your engine clean and leak-free with the Sierra 18-0519 Rear Main Oil Seal, designed for GM-based MerCruiser marine engines. This premium aftermarket solution is designed for seamless performance and durability. The one-piece rear main seal prevents oil leaks from the back of your engine’s crankshaft, ensuring your marine engine runs cleanly and efficiently.
Key Features & Benefits
- OEM Quality Replacement – Engineered to match or exceed the performance of original MerCruiser, OMC, and Volvo Penta parts.
- Exact Fit for GM Engines – This one-piece seal is precision-engineered for standard rotation engines, including 3.0L, 4.3L, 5.0L, and 5.7L models.
- Prevent Leaks, Protect Your Investment – A properly sealed crankshaft is crucial for maintaining optimal oil pressure, providing a tight seal, and preventing costly oil leaks.
- Precision Fit – Manufactured to exact specifications for easy installation and dependable sealing.
Sierra Rear Main Oil Seal Replaces
- Crusader: R047173
- Volvo Penta/OMC: 3852657
- Mallory: 9-61621
- GLM: 912957
SHIPPING: $7.95 flat rate shipping to anywhere in the lower 48. Shipping to Alaska, Hawaii, & any other US Territory will have additional shipping fees.
International Shipping will be calculated after checkout. International customers will receive an email and a PayPal money request for the additional shipping charges at the email address provided. (Some items are excluded from international shipping)
If you have any questions, please contact us through e-mail at customerservice@marinepartswarehouse.com. Please provide your engine model number to help confirm compatibility.
