FMBP 55058 Engine Oil Pressure Relief Valve Spring

Engine Oil Pressure Relief Valve Spring

Melling 55058 is a performance oil pressure relief valve spring for applications that require a specific oil pump pressure setting. It is built from steel and machined to exacting tolerances to help maintain the advertised pressure target in compatible oil pump setups.

Key Features

• Steel construction for consistent spring performance
• Performance grade replacement spring
• Push-type spring design
• 58.0 spring force specification
• Used with Melling oil pumps listed in the fitment notes

Detailed Description

The Melling 55058 oil pressure relief valve spring is intended for builders and repair work where oil pump pressure needs to be set to a defined specification. Melling states that this replacement spring matches the same quality standards used in its manufactured oil pumps and is produced to tight tolerances so the resulting pressure remains on target. This makes it a practical choice for Chevrolet and GMC engine builds that use the listed oil pump applications, including many classic and late-model truck, van, and performance platforms. The 55058 part number is commonly searched alongside Melling 55058 for pressure-control service in compatible oil pump assemblies.

What It Is Used For

• Restoring oil pump pressure to the specified range
• Replacing a fatigued or inconsistent relief spring
• Supporting pressure changes during engine rebuilds
• Addressing low or unstable oil pressure caused by spring wear

Installation Notes and Tips

Install only in the oil pump applications listed in the fitment data, and verify the pump part number before assembly. The fitment notes specify use with Melling 10550ST, 10551ST, 10553ST, and 10554ST oil pumps. Confirm the spring force requirement during engine service, and follow the oil pump manufacturer’s assembly procedure for proper pressure control. Fits 2003-1957 Chevrolet and GMC applications as listed in the fitment table, with the exact model and year combinations shown for each row.

Quality Assurance

Melling positions this spring as a precision replacement component made to exact tolerances for correct pressure output. The Performance line identifies it as a performance-grade part for pressure-specific oil pump service.