FMBP 473004 Engine Valve Lock

Engine Valve Lock for Performance Builds

This Melling engine valve lock is a steel replacement component for valve train service and rebuild work. Part number 473004 is made in the USA and specified for applications that require a 0.390-inch valve stem diameter and a two-groove lock design.

Key Features

• Steel construction for valve train retention service
• 0.390-inch valve stem diameter fitment
• Two-groove lock configuration
• Performance grade type
• Made in the USA

Detailed Description

Melling 473004 is an engine valve lock intended for applications where the original locks should be replaced during valve service. The part is engineered to meet or exceed OEM requirements for each application and is used for both reclaimed and new engine valves. Fitment coverage includes a wide range of Chevrolet, GMC, Ford, Mercury, and American Motors engines and performance-oriented platforms, including Chevrolet Camaro, Ford Mustang, and Chevrolet Corvette applications. For buyers searching for a valve lock for Chevrolet C10, GMC P3500, or Ford F-250 engine rebuild work, this part number 473004 provides a direct replacement option within the listed applications.

What It Helps Address

• Worn valve locks during cylinder head service
• Replacement needs after valve reconditioning
• Retention issues in performance valve train assemblies
• Rebuild work requiring the correct stem diameter and groove count

Installation Notes and Tips

Verify valve stem diameter, groove count, and application before installation. Replace valve locks rather than reusing old parts, and follow the engine builder’s service procedure for proper valve train assembly. Compatible with listed Chevrolet, GMC, Ford, Mercury, and American Motors applications only.

Quality Assurance

Melling states that these valve locks are manufactured with quality materials and built to meet or exceed OEM requirements for each application. Part number 473004 is made in the USA.