Quicksilver 8M0137703 Hydraulic Trim Manifold Assembly for MerCruiser Alpha & Bravo Sterndrives

The Quicksilver 8M0137703 Hydraulic Trim Manifold Assembly is a genuine OEM gimbal housing component designed for MerCruiser Alpha One and Bravo sterndrive units. This manifold serves as the central hydraulic connector in the power trim system, routing high-pressure fluid from the trim pump to the individual trim cylinders that control the vertical movement of the sterndrive. Proper operation of this manifold is essential for smooth, responsive trim and tilt function.

The manifold block features 2 inlet ports and 4 outlet ports, ensuring consistent hydraulic fluid distribution to both port and starboard trim actuators. It mounts directly to the gimbal housing using stainless steel fasteners and seals with precision-cut gaskets to prevent leaks under the vibration and pressure conditions common in marine environments.

Key Features:

• Genuine Quicksilver OEM part — ensures correct fit, form, and function
• Hydraulic manifold with 2 inputs and 4 outputs for balanced fluid distribution
• Carbon steel construction for durability in marine environments
• Mounts to the gimbal housing with 1/2-13 UNC hex bolts
• Direct replacement for superseded part numbers 8M0080805 and 98825A4
• Compatible with 1/4" hydraulic tube fittings (1983 and newer)
• Sold individually (quantity = 1)

Common symptoms indicating manifold replacement may be needed include hydraulic fluid leaks at the manifold, slow or erratic trim response, or loss of trim hold. This part supersedes earlier Mercury Marine part numbers 8M0080805 and 98825A4 (also cross-referenced as 98825A12).