Cummins ISX/QSX 4009956 Fuel Valve PAI 180153CROSS REFERENCE: 4009956 APPLICATION: Cummins ISX QSX Multiple Use Application. BRAND: PAI 180153 Cummins 4009956 Fuel Valve PAI 180153. Aftermarket truck parts and truck repair parts. Maintains fuel pressure and supports controlled fuel delivery. All components are proudly manufactured in the U. S. A. by PAI Industries Inc., an ISO9001 certified company with over 50 years of experience in the heavy duty truck parts industry. This part is built brand