Oil Pressure Springs #58 Yellow (5pk)

The MELLING Oil Pressure Springs #58 Yellow (5pk) is a precision oil pump relief spring designed to maintain optimal oil pressure in Small Block Chevy engines. Set to open at 58 psi, this spring regulates peak oil pressure to protect internal engine components from overpressurization while ensuring adequate lubrication during both idle and high-rpm operation. The five-pack configuration provides a complete replacement set or spares for engine builders and rebuilders working with classic small block applications.

Constructed from steel with yellow identification marking for quick visual reference, this relief spring is engineered to exacting tolerances. The 58 psi rating is calibrated for small block Chevy engines where maintaining stable oil pressure across varying rpm ranges is critical to engine longevity. At idle, the spring holds closed, allowing pressure to build; under load or acceleration, it opens precisely at 58 psi to prevent excessive pressure spikes that can damage seals, gaskets, and oil galleries. The spring's consistent load characteristics ensure repeatable pressure regulation across the engine's operating window.

This product is essential for anyone rebuilding or servicing a small block Chevy engine, including hot rodders, restoration specialists, and performance engine builders. Oil pressure relief springs wear over time and can lose load, resulting in pressure creep and potential engine damage. Replacing the spring during an engine rebuild or oil pump service ensures the oil system returns to factory specification. The five-pack quantity allows for multiple rebuilds or provides backup springs for long-term ownership.

MELLING is a recognized manufacturer of OEM and aftermarket engine components, with extensive experience in hydraulic valve and relief spring design. The yellow color coding conforms to industry standards for 58 psi rating, making identification straightforward during assembly. Compact dimensions and light weight (0.05 lbs per pack) mean easy storage and handling without compromising performance or reliability in service.