
Shipping Estimate
USA
- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 7 - Jul 12
For Your Every Summer RSVP, with Code: SUMMER15
Description
Fleece Performance 11-16 GM 2500/3500 Duramax LML Fan Extension HarnessUpgrade your 2011 to 2016 GM 2500 and 3500 series Duramax LML models with the Fleece Performance fan extension harness. Designed to deliver reliable and efficient extension capabilities, this harness ensures seamless connection and optimal functionality of your engine's fan system. Manufactured by Fleece Performance, a trusted name in high performance automotive components, this extension harness caters specifically to the wiring needs of your
Upgrade your 2011 to 2016 GM 2500 and 3500 series Duramax LML models with the Fleece Performance fan extension harness. Designed to deliver reliable and efficient extension capabilities, this harness ensures seamless connection and optimal functionality of your engine's fan system.Manufactured by Fleece Performance, a trusted name in high-performance automotive components, this extension harness caters specifically to the wiring needs of your powerful Duramax engine. Its robust construction is engineered to withstand harsh under-the-hood conditions, providing durability and longevity.
Installation is straightforward, making it a perfect solution for enthusiasts looking to maintain or upgrade their wiring system without hassle. Whether you are enhancing your daily driver or building a high-performance workstation, this extension harness offers the reliability and quality you expect from premium tuning parts.
Backed by Tuningsupply's commitment to fast delivery and excellent customer service, you can order with confidence knowing you are supported by enthusiasts who understand your passion and technical needs.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 488 reviews
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Product Reviews
★★★★★ 5
Perfect fit for boyh filters
Watched a youtube video, easy changed both filters in 10 minutes.
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Reviewed in the United States on January 18, 2026
★★★★★ 5
Easy to install
Fit like a glove easy to insert
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Reviewed in the United States on January 13, 2026
★★★★★ 5
Excelente
Excelente
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Reviewed in the United States on November 5, 2025
★★★★★ 5
With the word Trilogy, made me think I was getting all 3
Arrival was great and on time. Thought I was getting the timepiece the second in trilogy. But will keep it and order the other two of the series I typed in the name “Timepiece” and got The Christmas Box, thinking I was possibly getting all 3. I guess that is my mistake
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Reviewed in the United States on August 11, 2025
★★★★★ 5
11th Gen Civic touring 1.5L Fits perfect
Impressive product, IT FITS MY 2024 HONDA CIVIC TOURING 1.5L!
Value for the buck indeed! Will buy again in the future.
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Reviewed in the United States on September 28, 2025