STK Performance Single Racing Valve Spring Kit BMW M57 3.0D

Product Overview

High-performance single valve spring kit for BMW M57 3.0D diesel engines. Manufactured from premium Chrome Silicon steel with Chromoly retainers. Maintains precise valve control under diesel engine operating conditions.

Engine Applications

Fits: E39 525d / 530d · E46 330d · E38 730d · E53 X5 3.0d · E60 / E61 525d / 530d / 535d · E65 730d · E90 325d / 330d / 335d · E70 X5 · E71 X6 · X3 3.0d Engine codes: M57D25O0, M57D25O1 (TU), M57D30O0, M57D30O1 (TU), M57D30O2 (TU2), M57D30U2, M57D30T1 (twin turbo), M57D30T2 (twin turbo)

What's Included

• 24 × Single Valve Springs
• 24 × Chromoly Retainers

Technical Specifications

Seating Pressure @ 37.2mm = 85lbs Full Lift = 175lbs

Material Specifications

Valve Springs: Premium Chrome Silicon Steel - Heat treated for diesel applications Retainers: 4130 Chromoly Steel

Application

Designed for BMW M57 3.0D diesel engines.

Installation Notes

Professional installation recommended. Verify spring heights and clearances for diesel application.