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Duramax Fan Extension Harness 2017-2019 GM2500/3500 Duramax (L5P) Fleece Performance
Direct-fit extension harness for 2017–2019 L5P 6.6L Duramax—connects fan assembly to chassis harness. High-quality, in-house manufacturing for reliable repairs.
Easily restore your cooling system’s function with this direct-fit fan extension harness for 2017–2019 L5P 6.6L Duramax engines. Designed to connect the fan assembly to the chassis harness, this extension harness eliminates the need to replace the entire fan and clutch assembly when repairing damaged wiring.
Manufactured in-house with fully automated wire cutting and terminal crimping, this harness delivers consistent quality and reliable performance. Compatible with GM cooling fan clutch part numbers 15-40577 and 84013368, it’s the perfect solution for Silverado, Sierra, and other GM trucks equipped with the L5P Duramax.
Key Features:
- Direct-fit extension for 2017–2019 L5P 6.6L Duramax
- Connects fan assembly to chassis harness
- High-quality, automated production
- Compatible with GM 15-40577 and 84013368
- Quick, secure installation—get your truck back on the road fast
Fitment:
- 2017–2019 Silverado 2500/3500 HD
- 2017–2019 Sierra 2500/3500 HD
- Other GM trucks with L5P 6.6L Duramax and listed fan clutch part numbers
- Engine Year2017-2019
- Property 65 WarningCALIFORNIA WARNING: Cancer and Reproductive Harm -www.P65Warnings.ca.gov
- Vehicle TypeTruck/SUV
- BrandFleece Performance
- Country of OriginUS
- Sold AsEach
- Warranty6 Month Limited Warranty
Shipping Times
Most customers will see their parts within 3-5 business days. We will primarily ship with Purolator ground & DHL Express to ensure the fastest shipping possible.
Please Note: These are only estimates and shipping time may vary depending on your location, out of country and rural locations expect longer wait times.
Where Do We Ship
We will ship our products within Canada and the United States.
Please Note: There are limitations what can be shipped to the United States.
Damaged Shipments
We provide the option to purchase insurance as we are not responsible for any damage while with a courier, we don’t often see issues, but it does happen. If you purchased insurance we will put in a claim, if no insurance was purchased there will be no refunds or exchanges.
Return Policy
It happens sometimes we would like to return it. Here are our return rules:
- Prior to any return you must contact us and get an approval for a RMA number.
- Product must be unopened and have no damage.
- You must pay for the shipping back, please insure so if anything happens you can make a claim, we are not responsible for damage during shipping and is the sole responsibility of the customer.
- Regular products are subject to a 5% Restocking fee.
- Items over 50 lbs. or special orders will be subject to a 20% Restocking fee.
- Electronics & Tuning is a final sale and cannot be returned.
- Fitment TypeVehicle Specific
Year | Make | Model | Notes |
---|---|---|---|
2017 | GMC | Sierra 2500 HD | |
2017 | GMC | Sierra 3500 HD | |
2017 | Chevrolet | Silverado 2500 HD | |
2017 | Chevrolet | Silverado 3500 HD | |
2018 | GMC | Sierra 2500 HD | |
2018 | GMC | Sierra 3500 HD | |
2018 | Chevrolet | Silverado 2500 HD | |
2018 | Chevrolet | Silverado 3500 HD | |
2019 | GMC | Sierra 2500 HD | |
2019 | GMC | Sierra 3500 HD | |
2019 | Chevrolet | Silverado 2500 HD | |
2019 | Chevrolet | Silverado 3500 HD |