The Cummins 3925954 Fuel Heater Delete Nipple is a direct-fit replacement designed for 1989-1993 5.9 Cummins engines. Crafted from high-quality materials, this durable nipple effectively replaces the factory fuel heater, maintaining the same fit and performance standards as the original component. Engineered for reliability, it ensures seamless integration into your fuel system, allowing for a clean, efficient setup. Whether you’re upgrading or simply maintaining your fuel system, this fuel heater delete nipple provides a straightforward, dependable solution backed by Cummins' trusted quality.