DEUTZ Valve Cone / Cotter / Keeper / Collet [3-Groove] This precision valve retainer assembly is engineered for universal compatibility across all DEUTZ engine models. The three-groove design ensures secure valve stem retention and optimal seating under high combustion pressures. Manufactured to OEM specifications, this component maintains critical valve timing and prevents unwanted movement during engine operation. Essential for reliable performance in diesel and gas applications, this keeper delivers the durability and precision DEUTZ engines demand.