BCBC MR-886 Engine Rocker Arm

Engine Rocker Arm for Stock Applications

This Melling engine rocker arm is a standard replacement part for stock valve train service on a wide range of Ford and Mercury applications. Part number MR-886 is built for shaft-mounted use and is listed with self-aligning construction for consistent valve train geometry.

Key Features

• Standard replacement engine rocker arm for stock applications
• Self-aligning design for stable valve train operation
• Stamped steel construction with ductile steel material specification
• Anti-rust finish for added surface protection
• Non-roller rocker arm type with shaft mounting
• 0.442 in. slot width

Detailed Description

Melling MR-886 is an engine rocker arm intended for stock-style valve train service where the original design calls for a shaft-mounted, self-aligning rocker. The stamped steel construction and anti-rust finish support dependable operation in rebuild and repair work, while the non-roller design matches the needs of many classic Ford and Mercury engines. This part number, MR-886, is listed across numerous 1960s and 1970s Ford and Mercury models, including Mustang, Bronco, F-100, and Cougar applications with the specified stock or serial-number-limited fitment notes. Melling recommends replacing rocker arms and related components during engine rebuilds to maintain long engine life and efficient performance.

Common Uses

• Worn rocker arm replacement during engine rebuilds
• Correction of valve train noise caused by rocker wear
• Restoration of stock valve train geometry
• Replacement for damaged or corroded rocker arms
• Service on classic Ford and Mercury engines with shaft-mounted rockers

Installation Notes and Tips

Verify the engine’s original rocker arm design, shaft mounting style, and serial-number notes before ordering. Confirm that the application calls for a self-aligning, non-roller rocker arm with the listed slot width. Replace related valve train components as needed during rebuild service to maintain proper operation.

Quality Assurance

Melling supplies rocker arms for domestic and import engine applications and uses stamped or cast construction based on OEM design requirements. Part number MR-886 follows that application-specific approach for stock valve train service.