BCBC MPR-78 Engine Push Rod

Overview

Melling push rod MPR-78 is a standard replacement engine push rod built from welded steel for select Ford and Mercury applications. It is made in the USA and specified for stock valve train service where the correct length, tip style, and diameter matter.

This part number, MPR-78, is listed for mechanical-lifter and hydraulic-lifter applications depending on the vehicle and engine configuration. Compatible with classic Ford and Mercury V8 applications, it supports proper valve train geometry when the original push rod is worn or no longer matches the required specification.

Key Features

• Welded steel construction for standard replacement service
• Ball end and cup end tip design for listed applications
• 0.312 in. diameter and 9.157 in. overall length
• Made in the USA
• Standard replacement grade for stock engine builds

Detailed Description

MPR-78 is a Melling engine push rod engineered for stock valve train applications across a wide range of Ford and Mercury models. The listed dimensions include a 0.312-inch diameter, 9.157-inch length, a 0.312-inch ball end on one side, and a 0.5-inch cup end on the other, which are critical details when matching the correct push rod to the engine’s lifter and rocker setup. This part number, MPR-78, is used in applications calling for standard replacement geometry rather than custom performance sizing.

Melling notes that new push rods should be installed when servicing the valve train to maintain proper geometry and performance. The brand also offers other push rod options for OEM-style and performance use, but this Stock line item is focused on standard replacement needs.

This part cross-references Monroe Shocks & Struts (e.g., 74-6078, 48039) for the same application.

What It Is Used For

• Replacing a bent or worn push rod in a stock valve train
• Restoring correct valve lift and rocker arm motion
• Addressing noisy or inconsistent valvetrain operation caused by incorrect geometry
• Matching factory-style dimensions in listed Ford and Mercury engines
• Servicing mechanical-lifter or hydraulic-lifter applications shown in the fitment data

Installation Notes and Tips

Verify lifter type, push rod length, and tip style against the engine specification before installation. Fitment includes multiple Ford and Mercury models with notes such as special engine with mechanical lifters, use with mechanical lifters, use with hydraulic lifters, and cup-and-ball or cup-and-oval end requirements. Confirm the engine configuration before ordering, since the same vehicle line may use different push rod specifications.

For best results, inspect the related valve train components for wear and replace any damaged parts at the same time. This helps ensure the new push rod seats correctly and maintains the intended geometry.

Quality Assurance

Melling manufactures this push rod to stringent specifications using quality materials and controlled production processes. The part is made in the USA and backed by the brand’s focus on OE-style and performance engine components.