BCBC MR-913 Engine Rocker Arm

Engine Rocker Arm Overview

Melling MR-913 is a standard replacement engine rocker arm for stock valve train applications. It is built in the USA and uses a roller-style, self-aligning design with an anti-rust finish and cast iron construction for dependable service in rebuilds and repairs.

This rocker arm is listed for a wide range of Cadillac, Chevrolet, and GMC applications, including the Chevrolet Silverado 1500, Chevrolet Camaro, and GMC Sierra 1500. The MR-913 part number is also referenced as R-913 and 12619823 for the same application.

Key Features

• Roller rocker arm design for reduced friction at the valve train contact point
• Self-aligning construction for stock-style valve train setups
• Cast iron body with anti-rust finish
• Bolt-on mounting type
• Standard replacement grade for engine rebuild service
• Made in the USA

Detailed Description

MR-913 is engineered as a direct replacement rocker arm for stock engine valve train service. Melling supplies rocker arms for domestic and import applications, and this part follows OEM design requirements with a cast iron body and roller-style contact surface. The self-aligning layout helps maintain proper rocker positioning in supported applications, while the anti-rust finish adds surface protection during service life. For buyers searching for a Chevrolet Silverado 1500 rocker arm, GMC Sierra 1500 rocker arm, or Cadillac CT5 rocker arm, MR-913 provides a fitment-specific replacement option for stock configurations.

What It Is Used For

• Replacing a worn or damaged rocker arm in a stock valve train
• Restoring proper valve actuation and engine operation
• Addressing noise caused by rocker arm wear
• Correcting valve train instability in rebuild work
• Supporting efficient performance after engine service

Installation Notes and Tips

Install MR-913 according to the engine’s OEM service procedure and verify fitment against the exact year, make, model, and stock configuration. Melling recommends replacing rocker arms and related components during engine rebuilds to support long engine life and efficient operation. Confirm the valve train design before installation, especially on Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac applications.

Quality Assurance

Melling manufactures this rocker arm in the USA and specifies it as a standard replacement part built from selected materials and production processes. The MR-913 part number is cross-referenced to R-913 and 12619823 for the same application.