SIERRA 18-2414 Rubber Metal Coupling

Compatible Engines

The SIERRA 18-2414 rubber metal coupling is a critical component of the drive transmission system, engineered for reliability and extended service life. This high-quality replacement part ensures effective vibration damping and protects the transmission gear from sudden load shocks. It is specifically designed for MERCRUISER engines with power outputs of 165, 170, 470, and 488 HP (3.7L and 3.7LX models). Compatibility is strictly limited to units manufactured between 1983 and 1989 with serial numbers 6170297 and higher.

Always verify part selection using the manufacturer's catalog number 18-2414 or the original OE number. If you have any doubts regarding fitment for your engine, contact our customer support for expert advice to avoid ordering errors.

Installation and Maintenance

Proper installation of the rubber metal coupling is essential for smooth engine operation. Before installation, ensure all contact surfaces are clean and free of corrosion. We recommend applying appropriate copper or molybdenum-based lubricants to friction surfaces to prevent galling. Regular inspection of the rubber damping elements allows for early detection of wear, preventing damage to more expensive drivetrain components.

• SIERRA Original Quality – guarantee of durability and OEM standard compliance.
• Drivetrain Protection – effective vibration and shock absorption.
• Precise Fitment – ideal match for MerCruiser 3.7L engines within the specified serial number range.
• Easy Replacement – standard dimensions facilitate the removal of the old coupling.