Dana Spicer 4218932 is a genuine Dana Spicer spring for clutch service, listed by the manufacturer as a Spring-Clutch. Springs in a clutch press the friction disk against the flywheel so engine power passes through while the clutch is engaged. When clamping force falls off and the clutch starts to slip, wear on the friction surfaces speeds up, so a tired spring is worth catching early. Pro Gear and Transmission sells it as a genuine Dana Spicer part. Call us to confirm proper fit for your application.FeaturesDana Spicer Spring-Clutch, part number 4218932A genuine Dana Spicer partSprings press the friction disk against the flywheel while the clutch is engagedSlipping under load is a common sign clamping force has fallen off