BCBC MR-900 Engine Rocker Arm

Overview

The Melling MR-900 is a standard replacement engine rocker arm built for stock-style valve train service. It uses stamped steel construction, a non-roller design, and a self-aligning shaft mount to match the needs of a wide range of Chevrolet and GMC applications.

Fits 1985-2002 Chevrolet and GMC applications, including Chevrolet C10, Chevrolet K20, GMC Jimmy, and Chevrolet Tahoe. The MR-900 part number is used across many stock replacement searches for GM truck and SUV valve train service.

Key Features

• Stamped steel rocker arm construction for stock replacement use
• Non-roller design for conventional valve train setups
• Anti-rust finish for added surface protection
• Self-aligning design with shaft mounting type
• Made in the USA

Detailed Description

The MR-900 is an engine rocker arm from Melling’s Stock line, intended for applications that call for a standard replacement part rather than a performance upgrade. Melling lists rocker arms for domestic and import applications, and this part follows OEM-style design requirements with stamped steel construction and a self-aligning shaft mount. The MR-900 part number is commonly referenced for GM truck, van, SUV, and full-size utility applications, including Chevrolet C3500HD and GMC Savana 3500 fitments.

This part cross-references Monroe Shocks & Struts (e.g., 40-2900, 180-1292) for the same application.

What It Is Used For

• Replacing a worn rocker arm in a stock valve train
• Restoring proper valve actuation and motion transfer
• Addressing noise caused by rocker arm wear or looseness
• Supporting rebuild work on high-mileage engines
• Maintaining original-style engine operation in GM applications

Installation Notes

Fits 1985-2002 Chevrolet and GMC applications with shaft-mounted, self-aligning rocker arm requirements. Verify OEM design specifications before installation, and replace related rocker arm components during engine rebuild service. The MR-900 part number should be matched to the engine’s original rocker arm style and mounting arrangement.

Quality Assurance

Melling states that this rocker arm is made in the USA and built using established manufacturing processes and material selection for standard replacement service. The brand recommends replacing rocker arms and related components during every engine rebuild to support long engine life and efficient performance.