The Cummins Construction 6.7L ISB QSB Diesel Engine Wiring Harness 4988598 Tier 3 OE is a high-quality replacement part made by Cummins in Mexico. Specifically designed for Cummins equipment, this wiring harness is a crucial component for ensuring proper electrical connectivity in diesel engines. With its durable construction and precise engineering, this product is a reliable choice for businesses and industrial applications requiring dependable heavy equipment parts and accessories.