This Detroit Diesel Low Speed Spring Cap is a must-have for any truck enthusiast. With its precise design and high-quality materials, it ensures optimal performance and durability for your vehicle. The cap is compatible with a wide range of Detroit Diesel engines, and its part number is 5102968. Whether you're replacing a worn-out cap or upgrading your truck's performance, this low speed spring cap is a perfect fit. It is made of durable materials and designed to withstand heavy-duty use. So, if you want to ensure your Detroit Diesel engine runs smoothly and efficiently, this cap is the perfect choice.