BCBC VL-1120 Engine Valve Lock

Engine Valve Lock Overview

This Melling engine valve lock is a standard replacement component for stock applications that require a 3-groove valve stem interface. Made in the USA and built from steel, it is specified for a 0.233 in. / 6.00 mm valve stem diameter and is used during valve service on a wide range of Ford, Jeep, Dodge, Ram, Chrysler, Lincoln, Mazda, Mercury, and Volkswagen engines.

Key Features

• Steel construction for valve train service
• Standard replacement grade for stock engine applications
• 3-groove design for the listed valve stem interface
• Made in the USA
• Engineered to meet or exceed OEM requirements for each application

Detailed Description

Part number VL-1120 is a Melling valve lock used to secure engine valves during assembly or repair. It is intended for applications that call for a 0.233 in. / 6.00 mm valve stem diameter and a 3-groove lock design. This part number, VL-1120, is listed across many stock-fitment applications, including Ford F-150, Ford Explorer, Jeep Grand Cherokee, Ram 1500, and Chrysler 300 engine platforms.

Melling recommends replacing valve locks rather than reusing them, whether the engine is being serviced with reclaimed valves or new valves. The steel construction and standard replacement specification make this a direct service part for valve train maintenance where the original lock geometry matches the listed dimensions. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Is Used For

• Replacing worn or reused valve locks during engine rebuilds
• Securing valves in stock valve train assemblies
• Restoring proper valve stem retention after cylinder head service
• Addressing valve train wear found during teardown

Installation Notes and Tips

Verify valve stem diameter, groove count, and lock dimensions before installation. This part is listed for stock applications only, so match the engine’s original valve hardware specifications before assembly. Follow standard engine service procedures and replace valve locks instead of reusing removed components.

Quality Assurance

Melling manufactures this valve lock with quality materials and states that it is engineered to meet or exceed OEM requirements for each application. Made in the USA, part number VL-1120 is built for service use in stock engine applications.