Genuine OEM GM 19368140 / PT3739 L5P Duramax Injector Repair Harness 2017-2024

Restore proper injector connection performance with the BackWoods Diesel L5P Injector Repair Harness, a high-quality aftermarket replacement for the OEM GM harness used on 2017–2025 Chevy Silverado & GMC Sierra HD trucks equipped with the 6.6L L5P Duramax.

These aftermarket harnesses are designed to resolve common issues caused by aging connectors, including increased resistance, poor conductivity, misfires, and injector-related DTCs such as:

P0201 – Injector 1 Circuit/Open
P0208 – Injector 8 Circuit/Open

Our BackWoods Diesel replacement harness offers a budget-friendly alternative to the Genuine GM version while maintaining proper fit, connector indexing, and lead length for each injector position.

Ideal for shops, fleet maintenance, or anyone wanting reliable performance without OEM pricing.

Features:
- BackWoods Diesel aftermarket injector pigtail harness
- Direct-fit replacement for OEM GM / ACDelco harness
- Correct connector orientation and locking tabs
- Helps resolve injector circuit DTCs (P0201, P0208, etc.)
- Durable, heat-resistant wiring and sealed connector design
- Plug-and-play installation — no splicing required
- Cost-effective alternative to OEM GM 19368140 / PT3739

Fitment: 2017-2024 Chevy/GMC 6.6L Duramax L5P 

SHIPPING IS FREE via USPS First Class Mail to the lower 48 US states.

Alaska, Hawaii, Puerto Rico, Guam, APO/FPO addresses will need to email for a shipping quote.

CANADA, MEXICO, & ALL INTERNATIONAL BUYERS WILL NEED TO USE THE eBay GSP (GLOBAL SHIPPING PROGRAM)

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