OTTO Npr71 4Hg1 Fuel Injection Pump Parts Repair Kit Delivery Valve 53A 1156194010 115619-4010 1-15619401-0 For Isuzu The OTTO Npr71 4Hg1 Fuel Injection Pump Parts Repair Kit is a precision-engineered, OEM-grade solution designed to service, restore, and optimize the performance of Isuzu’s 4Hg1 series fuel injection pumps. As a critical component in fuel delivery systems, this repair kit is meticulously crafted to align with Isuzu’s stringent manufacturing standards, ensuring seamless compatibility and reliable operation in a range of heavy-duty equipment applications.