Pai Industries Fuel Check Valve Part No: 645053
$149.87
The PAI Industries 645053 Fuel Check Valve is designed for Detroit Diesel Series 60 engines, replacing OEM 23535129 with a .25″ internal diameter construction, 0.87″ hex head, and 3.79″ overall length. It features M14×1.5 male × 5/8-18 male pipe threads for secure fuel system installation. Manufactured in ISO-certified U.S. facilities and backed by a 2-year unlimited-mileage warranty, this valve from Wofford Truck Parts provides reliable protection against fuel backflow and leakage under heavy-duty conditions.
Specifications
The PAI 645053 Fuel Check Valve is a high-quality replacement part engineered for Detroit Diesel Series 60 engines—covering the 11.1 L, 12.7 L, and 14 L versions. Intended to replace OEM number 23535129 (also known as Freightliner / Detroit DDE23535129), it ensures a precise fit and reliable performance. Key specifications include:
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Inner Diameter: 0.25″
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Hex size: 0.87″
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Overall length: 3.79″
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Threads: M14 × 1.5 male × 5/8-18 male pipe
Made in the USA under ISO-9001 standards, with a 2-year unlimited-mileage warranty. This fuel check valve prevents reverse flow and offers a clean, secure seal in the fuel pump assembly. Available from Wofford Truck Parts and suitable for use in demanding fleet and heavy-duty applications.
Compatibility
Freightliner – FLD, Century, Columbia, Coronado, Argosy (1987-2011)
Kenworth – T600, T800, W900 (1987-2011)
Peterbilt – 377, 378, 379, 386, 388 (1987-2011)
Western Star – 4700, 4900 (1990s-2011)
Sterling – Acterra, A-Line (late 1990s-2010)
International / Navistar – select line-haul / transit models (1987-2011)
Bus / Coach / RV / Specialty – various units using Series 60 (1990s-2011)
Alternative Part Numbers
- DDC23535129
- Detroit Diesel 23535129
- Freightliner DDE23535129
- PAI 645053
