BCBC MPR-638 Engine Push Rod - Intake

Overview

Melling push rod MPR-638 is a standard replacement engine push rod for intake valve train applications. It is built from welded steel with ball ends and drilled construction, and it measures 8.19 inches in length with a 0.375-inch diameter.

Fits 2001-2009 Chevrolet Silverado 2500 HD, intake and fits 2001-2006 GMC Sierra 2500 HD, intake. This MPR-638 application also covers Chevrolet and GMC heavy-duty trucks and vans in the same intake position.

Key Features

• Welded steel construction for valve train service.
• Ball end top and bottom tips for proper engagement.
• Drilled design for oiling and internal flow.
• Standard replacement grade for OEM-style service.
• Made in the USA.

Detailed Description

MPR-638 is part of Melling's push rod line for standard and performance engine applications. Melling recommends replacing push rods during service to maintain correct valve train geometry and consistent performance. This part number is also cross-referenced to 12556295 and PR-638 for the same application.

Compatible with intake positions on Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500, Chevrolet Avalanche 2500, GMC Sierra 2500 HD, GMC Sierra 3500, GMC Yukon XL 2500, Chevrolet C4500 Kodiak, Chevrolet C5500 Kodiak, Chevrolet C6500 Kodiak, Chevrolet C7500 Kodiak, GMC C5500 Topkick, GMC C6500 Topkick, and GMC C7500 Topkick applications listed in the fitment data. MPR-638 is a direct-fit choice for service work on these Chevrolet and GMC platforms when the original push rod matches the listed dimensions and design.

What It Is Used For

• Restoring correct valve train geometry after wear or damage.
• Replacing a bent, worn, or fatigued push rod.
• Addressing valvetrain noise caused by incorrect push rod condition.
• Supporting consistent intake valve operation in stock engine setups.

Installation Notes and Tips

Verify length, diameter, and tip style against the removed part before installation. Confirm intake-side application and inspect related valve train components for wear before reassembly. Follow the engine manufacturer's service procedures and torque specifications during installation.

Quality Assurance

Melling manufactures this push rod in the USA and builds it to stringent production specifications using quality materials and controlled manufacturing processes.