BCBC MR-1323 Engine Rocker Arm

Overview

The Melling MR-1323 engine rocker arm is a standard replacement component for applications that use a shaft-mounted, self-aligning roller design. Built from cast steel with an anti-rust finish, it is made in the USA and listed for a wide range of domestic and import engines. This part number, MR-1323, is used across many GM and related platforms, including Chevrolet Traverse and Buick Enclave applications.

Key Features

• Cast steel rocker arm with roller design for consistent valve train motion
• Self-aligning construction helps maintain proper alignment during operation
• Anti-rust finish adds surface protection
• Shaft mounting type for compatible engine assemblies
• Standard replacement part for rebuild and service work
• Made in the USA

Detailed Description

Melling MR-1323 is an engine rocker arm designed for stock-style valve train service in compatible GM, Buick, Cadillac, Chevrolet, GMC, Pontiac, Saab, Saturn, Suzuki, and Isuzu applications. The cast steel body and roller-style design support smooth valve actuation, while the self-aligning feature helps the rocker stay properly positioned in the assembly. Melling states that rocker arms in this line are offered for domestic and import applications and may be supplied in stamped or cast construction depending on OEM design requirements. The MR-1323 part number is commonly referenced for engine rebuilds where a shaft-mounted rocker arm is required, including Chevrolet Traverse and Buick Enclave fitments.

Common Uses

• Replacing a worn or noisy rocker arm in a compatible engine
• Restoring proper valve train geometry during an engine rebuild
• Addressing rocker arm wear that can affect valve lift and operation
• Correcting alignment issues in shaft-mounted rocker arm assemblies

Installation Notes

Verify engine code, valve train design, and mounting style before installation. This rocker arm uses a shaft mounting type and self-aligning design, so it must match the original engine configuration. Melling recommends replacing rocker arms and related components during a rebuild to support long engine life and efficient performance. Cross-reference part numbers include 180-1323 and 1284078J00 for the same application.

Quality Assurance

Melling manufactures this rocker arm in the USA and uses established materials and production processes for engine service parts. The MR-1323 is a standard replacement component intended for rebuild and maintenance work where original-style fit and function are required.