Oil Jet Check Valve Cooling Piston For Isuzu NRR NQR NPR-HD 4HK1 5.2L 4HE1 4.8L 95-24

This oil jet check valve is a critical component designed to provide cooling to the pistons in Isuzu NRR, NQR, and NPR-HD trucks equipped with 4HK1 5.2L and 4HE1 4.8L engines, covering model years 1995 through 2024. Manufactured from high-speed steel with a machined black exterior finish, this valve ensures proper oil flow management to maintain optimal engine temperature and performance. The hollow bolt design features a threaded exterior for secure installation and a central passage that directs pressurized oil to cool the underside of the pistons during operation. Built to meet OEM specifications, this replacement part is essential for maintaining the longevity and reliability of your Isuzu engine's cooling system. The precision-engineered construction ensures proper fitment and function, making it an ideal choice for routine maintenance or repair work on compatible Isuzu commercial vehicles.

COMPATIBLE APPLICATION: Oil jet check valve designed specifically for Isuzu NRR, NQR, and NPR-HD trucks equipped with 4HK1 5.2L (1995-2024) and 4HE1 4.8L engines

PISTON COOLING FUNCTION: Controls oil flow to cool pistons effectively, preventing overheating and extending engine life by maintaining optimal operating temperatures

PREMIUM CONSTRUCTION: Manufactured from high-speed steel with machined black exterior finish for superior durability and resistance to high-temperature engine environments

OEM SPECIFICATION: Meets OEM specifications to ensure proper fit and reliable performance as a direct replacement for worn or damaged original valves

OEM

8973296180 / 1131610120 / 1131610100

1131610090 / 1131610080 / 8943240490