A9069930901
Cylinder Head Valve Spring (OM904 Euro 4/5)
Detroit Diesel

This valve spring, tailored for the OM 904 Euro 4/5 engine, is essential for maintaining proper valve operation under high-pressure conditions. With a free length of 31.27 mm and a wire diameter of 1.70 mm, it provides just the right tension to ensure reliable valve closure and opening. The spring’s outer diameter of 18.50 mm complements its design, offering stability and resistance to fatigue. The chromium silicone coating enhances corrosion resistance and durability, vital for long-term performance in demanding environments. Proper functioning of this spring directly impacts engine compression, efficiency, and emission controls. Its high-quality steel construction ensures resilience against thermal cycles and mechanical stresses, making it a critical component for engine reliability. Source One Parts Center supplies this component as part of their commitment to supporting engine longevity and optimal performance.