Features: 1. Fitment: Fuel injector wiring harness replacement for Caterpillar C7 Engine and Caterpillar C9 Engine. 2. OEM Number: Replaces part numbers 366 9748, 2501107C1, 645 1001, 355 9748. Please verify the OEM part number of your unit before ordering. 3. Reliable Material: Harness constructed from high-strength ABS and metal materials, providing durability, firmness, precision, and long service life. 4. Professional Manufacturing: Manufactured to strict quality standards for stable performance, high reliability, accuracy, and sensitivity. 5. Perfect Match: Designed to original factory specifications for direct replacement, easy installation, and proper fit. Specification: Item Type: Fuel Injector Wiring Harness Material: ABS and metal OEM Number: 366 9748, 2501107C1, 645 1001, 355 9748 Upgrade or replace worn fuel injector wiring harness to help restore engine performance. Application: Compatible with Caterpillar C7 Engine Compatible with Caterpillar C9 Engine Note: 1. Please verify the part number of your unit before ordering; reference information is for guidance only. 2. If you are uncertain about compatibility, verify specifications before purchase to avoid incorrect orders.