Sierra 18-4009 Manifold End Plate for MerCruiser Marine Engines

The Sierra 18-4009 Manifold End Plate is a precision-engineered replacement component designed for MerCruiser marine engines. This front plate is compatible with multiple Sierra manifold models including 18-1954-1, 18-1955-1, and 18-1956-3, fitting 2.5L and 3.0L 181 CID engines.

Key Features:

• CNC-machined mating surfaces provide optimal seal without additional preparation
• Precision casting with uniform wall thickness for durability
• Pre-primed and painted to withstand harsh marine environments
• Leak tested for quality assurance
• Compatible with both port and starboard installations
• Exact OEM replacement engineered to meet or exceed manufacturer specifications

This manifold end plate is designed for quick, out-of-the-box installation. Requires gasket Sierra 18-2832 or 18-2832-9 (sold separately). Replaces MerCruiser OEM part number 60252A2, 60252, and 52999, as well as OMC 910384, Barr 160252, GLM 51010, and other aftermarket equivalents.