For Cummins QSB 4.5L Diesel Engine Common Rail Manifold Pipe 0445224025 3977727. Common rail manifold pipe. Is closely inspected and validated to meet all kinds of strictest quality standards to ensure a long lifetime, and tested before leaving factory to make sure reliability. Make your machine work like brand new! Easy installation, precision-engineered to industry standards for a guaranteed perfect fit. 30 Days Free Return. Cummins QSB 4.5L Diesel Engine. Ommon Rail Manifold Pipe. We will reply you within 24 hours. Please get in touch with us if there is a damaged package, and we will try our best to provide you with the best options or resend it. Before opening a return request, please get in touch with us. We pledge to provide you with the greatest options and ensure your satisfaction. We will send you a replacement item if the original fails to function. Our after-sales staff will make every effort to provide you with the greatest options and a positive return experience. When returning an item, please make sure it has not been used and that it is in its original packaging. Save the original packing materials until you are certain the products are a perfect match for your automobile and that you won’t be returning them.