Item No. 3970655 compression spring, with interchangeable codes 3010146 and 68274, fits Cummins 6CT8.3, 6L and QSL series engines. High-strength alloy steel with advanced heat treatment delivers exceptional fatigue resistance and stable elastic performance, maintaining consistent valve operation and engine compression. It is a critical component for engine valve system overhaul.
Supersedes:3010146 68274
