Engineered for superior performance, Colt Cams tappets feature a precision machined 1.4" diameter face and an optimized crowned (convex) contact surface—the most critical factor in achieving consistent lifter rotation on the Cummins platform.
After years of industry-wide inconsistency in crown quality—including flat and even dished surfaces found on brand-new aftermarket tappets—Colt Cams developed a solution that eliminates these failures. By refining crown geometry and maximizing curvature across the lobe width, Colt Cams tappets deliver reliable rotation, reduced wear, and dependable valve-train performance.
