These jet piston coolers are essential components designed to enhance engine performance and longevity in medium-duty trucks. This set of 4 precision-engineered piston coolers delivers targeted oil spray to cool pistons during operation, preventing overheating and reducing wear in high-stress conditions. Compatible with Isuzu NPR, NPR-HD, NQR, and NRR models equipped with 4HK1 5.2L and 6HK1 7.8L engines from 2004 to 2010, these coolers feature durable construction with brass cooling tubes that withstand extreme temperatures and pressures. The circular mounting base ensures secure installation, while the curved delivery tube positions the oil jet precisely where cooling is needed most. Each cooler is manufactured to meet OEM specifications, for reliable fitment. This complete set provides comprehensive cooling coverage for all cylinders, helping maintain optimal operating temperatures and extending engine life. Installation requires no assembly, making replacement straightforward for maintenance professionals. Backed by a 1-year manufacturer warranty, these jet piston coolers offer dependable performance for demanding commercial applications.

VEHICLE COMPATIBILITY: Designed specifically for Isuzu NPR, NPR-HD, NQR, and NRR trucks equipped with 4HK1 5.2L or 6HK1 7.8L engines from 2004 to 2010 model years

COMPLETE SET: Package includes 4 jet piston coolers to service your engine's cooling system, replacing OEM parts 

DURABLE CONSTRUCTION: Features black cast iron exterior with brass cooling jets engineered to withstand high engine temperatures and maintain optimal piston cooling performance

ENGINE PROTECTION: Essential component that sprays cooling oil onto pistons to prevent overheating, reduce wear, and extend engine life in medium-duty commercial trucks

WARRANTY: Backed by 1 year manufacturer warranty

OEM

8980206490 / 8981733420 / 8943951940