Sierra 18-0342 Power Trim Hose Connector Plate Gasket - Replaces 27-476441, 27-47644

The Sierra 18-0342 Power Trim Hose Connector Plate Gasket is a replacement gasket for the power trim hose connector plate on applicable MerCruiser sterndrive setups. It seals the connector plate where the power trim hydraulic hoses meet the housing, preventing hydraulic fluid seepage that can develop as the original gasket ages and loses its seal. This gasket is built to meet or exceed the specifications of the original equipment part it replaces, giving boat owners a reliable, drop-in option when servicing the power trim system during routine maintenance or when addressing a fluid leak at the connector plate.

Installation is straightforward for anyone already accessing the power trim hose connector plate: the old gasket is removed, the mating surfaces are cleaned, and the Sierra 18-0342 is fitted in its place before the connector plate hardware is reinstalled and torqued. Because it directly replaces the OEM Mercruiser 27-476441 and 27-47644 connector plate gaskets, it restores the original seal without modification to surrounding components.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-0342
• Product Name: Power Trim Hose Connector Plate Gasket
• Weight: 0.01 pounds
• UPC: 030999873309
• OEM Cross-Reference: Mercruiser 27-476441, 27-47644

Replaces (OEM)

• Mercruiser 27-476441
• Mercruiser 27-47644

Frequently Asked Questions

What does the Sierra 18-0342 gasket fit? The Sierra 18-0342 is a power trim hose connector plate gasket, used where the power trim hydraulic hoses connect to the connector plate on applicable MerCruiser sterndrive units.

Is the Sierra 18-0342 the same as Mercruiser 27-476441? Yes, the Sierra 18-0342 is a direct replacement for the Mercruiser 27-476441 and 27-47644 connector plate gaskets, built to meet or exceed the original equipment specification.

How much does the 18-0342 gasket weigh? This gasket weighs 0.01 pounds, consistent with its small, thin construction as a single connector plate seal.

Do I need any special tools to install the 18-0342 gasket? No special tools are required beyond what is already needed to access the power trim hose connector plate, since the 18-0342 is a direct fit for the hardware it replaces.

Is Sierra 18-0342 an OEM or aftermarket part? It is an aftermarket gasket manufactured by Sierra that is built to meet or exceed the quality of the original equipment Mercruiser 27-476441 / 27-47644 gasket it replaces.

What comes in the package with part 18-0342? The 18-0342 ships as the connector plate gasket itself, sized to seal the power trim hose connection at the connector plate.

Can this gasket be reused after removal? No, gaskets like the Sierra 18-0342 are designed for one-time use and should be replaced with a new gasket any time the connector plate is disassembled.

Why would I need to replace the power trim hose connector plate gasket? A worn or hardened connector plate gasket can allow hydraulic fluid to seep at the connection point; installing a new Sierra 18-0342 restores the seal and stops the leak.

Does the UPC 030999873309 confirm genuine Sierra packaging? Yes, UPC 030999873309 corresponds to the genuine Sierra 18-0342 Power Trim Hose Connector Plate Gasket.

Is one 18-0342 gasket enough for a complete repair? The Sierra 18-0342 is supplied as a single connector plate gasket, matching the one-piece original equipment seal it replaces.