BCBC VS-1631 Engine Valve Spring

Engine Valve Spring Overview

The Melling VS-1631 engine valve spring is a standard replacement spring built for stock applications across a wide range of Ford and Lincoln engines. It uses chromium-silicon alloy steel wire and a single-spring design to deliver consistent valve control in everyday and performance-oriented service.

Key Features

• Chromium-silicon alloy steel wire construction for dependable spring performance.
• Single-spring design for standard replacement use.
• Installed pressure of 59.0 and open pressure of 104.0 for controlled valve operation.
• Installed height of 1.45 and coil bind height of 1.043 for application-specific setup.
• Fits stock applications in Ford Transit-150, Transit-250, Transit-350, Transit-350 HD, Explorer, Flex, Police Interceptor Sedan, Police Interceptor Utility, Taurus, Expedition, F-150, and Lincoln MKT, MKS, and Navigator.

Detailed Description

The VS-1631 is part of Melling’s Stock line and is intended for engines that need a direct replacement valve spring with standard replacement characteristics. This part number, VS-1631, is listed for multiple Ford and Lincoln platforms, including the Ford F-150, Ford Explorer, and Lincoln Navigator, making it a fitment-focused option for stock engine service. Melling offers a broad range of valve spring designs, and this spring reflects that coverage with a standard single-spring configuration rather than a specialty race setup.

This part cross-references Monroe Shocks & Struts (e.g., 32-5019, 131-4001) for the same application.

What It Is Used For

• Replacing a worn or weakened valve spring.
• Restoring valve control in stock engine applications.
• Addressing inconsistent spring pressure during engine service.
• Supporting proper valve train operation when original spring specifications are required.

Installation Notes and Tips

Verify installed height, coil bind height, and spring pressure against the engine’s service specifications before installation. Confirm cylinder head and valve train requirements for the exact application, since fitment varies by model and engine configuration. Use the part number VS-1631 to match the correct spring specification during ordering and service.

Quality Assurance

Melling supplies valve springs across standard, heavy-duty, and race-ready categories, and the VS-1631 is built as a standard replacement spring for stock applications. The chromium-silicon alloy steel wire construction supports consistent performance under normal engine operating conditions.