These precision-engineered valve guides are designed specifically for Isuzu NRR, NPR, NPR-HD, and NQR trucks equipped with 4HG1, 4HF1, and 4HE1 4.8L engines from 1998-2004. Each set includes 8 cylindrical valve guides manufactured from high-grade steel with precise dimensional tolerances to ensure proper valve operation and alignment. The guides feature a smooth internal bore finish to reduce valve stem wear and maintain consistent engine performance. These replacement parts are essential for maintaining proper valve train operation and preventing excessive oil consumption. The robust construction helps withstand high temperatures and mechanical stress typical in commercial diesel engine applications. Perfect for engine rebuilds or repairs where valve guide replacement is necessary to restore proper valve stem clearance and engine compression.

COMPATIBILITY: Designed for Isuzu NRR NPR NPR-HD NQR models with 4HG1 4HF1 4HE1 4.8L engines from 1998-2004

PACKAGE CONTENTS: Set of 8 precision-engineered valve guides for complete engine service

CONSTRUCTION: Manufactured from high-grade steel for optimal durability and performance in demanding conditions

PRECISION FIT: Engineered to exact specifications for proper fitment and reliable operation in specified engine applications

DIMENSIONS: Professional-grade valve guides precisely machined to meet OEM specifications for reliable engine operation

OEM

8943965980 / 8943994002