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Piston Oil Expander Coil Spring for S60 14L
Detroit Diesel

The piston oil expander coil spring is a fundamental component in maintaining the proper tension of the oil control rings. It ensures that the rings stay snug against the cylinder wall, promoting effective oil scraping and sealing functions. Constructed from resilient spring steel, this coil spring withstands the high temperature fluctuations and mechanical stresses encountered during engine operation. Its precise dimensions are critical for maintaining consistent pressure on the oil control rings, preventing oil leakage into the combustion chamber, and reducing oil consumption. The spring's durability directly influences the longevity of the piston assembly and overall engine efficiency. Correct installation of this coil spring is vital for optimal piston ring function, helping to sustain engine cleanliness and performance over extended service intervals. Trusted sources like Source One Parts Center stock these springs to support heavy-duty engine rebuilds and repairs.