Upgrade your John Deere engine with the high-quality Lift Pump from Diesel Care and Performance! This lift pump is a direct fit replacement for the RE20042 model, ensuring easy and hassle-free installation on 4840 and 8440 engines. It is made from durable materials and is engineered to withstand the demanding conditions of a diesel engine. With this lift pump, you can expect improved performance, reliability, and longevity from your engine. Plus, it comes with a one year, unlimited mileage warranty for added peace of mind. Don't let a faulty lift pump hold you back - upgrade with Diesel Care and Performance today!