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- USA
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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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Description
Fleece Performance 11-14 GM Duramax 2500/3500 Heavy Duty Trans Cooler LinesUpgrade your 2011 2014 GM Duramax 2500 or 3500 truck with the high quality Fleece Performance heavy duty transmission cooler lines. Designed specifically for these powerful diesel trucks, these trans cooler lines offer enhanced durability to keep your transmission operating at optimal temperatures. Crafted by trusted brand Fleece Performance, these cooler lines ensure reliable and efficient cooling under demanding conditions. This helps prevent
Upgrade your 2011-2014 GM Duramax 2500 or 3500 truck with the high-quality Fleece Performance heavy duty transmission cooler lines. Designed specifically for these powerful diesel trucks, these trans cooler lines offer enhanced durability to keep your transmission operating at optimal temperatures.Crafted by trusted brand Fleece Performance, these cooler lines ensure reliable and efficient cooling under demanding conditions. This helps prevent overheating which can cause transmission wear or failure. Ideal for towing, heavy hauling, or performance driving, these lines provide peace of mind on every trip.
The kit fits perfectly with your existing transmission setup, offering an OEM-style installation experience without sacrificing strength or longevity. Upgrade to Fleece Performance transmission cooler lines for the ultimate in heavy duty transmission cooling and keep your Duramax running smooth and strong.
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 621 reviews
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Product Reviews
★★★★★ 4
Bright yellow light
Color: Yellow & Spot Flood Combo
More yellow then amber, was looking for more amber to cut through the fog here.
They are bright though and look good
Been through quite a few storms and it’s still water proof
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Reviewed in the United States on August 24, 2025
★★★★★ 5
Just buy them! Incredibly bright and look cool!
Color: Yellow & Spot Flood Combo
Installed in the "ditch lights" position on my Polaris RZR 800 and use them for headlights. My stock headlights may as well be off, you can't even begin to see them in the amber light. These lights are the real deal. When I turn them off I feel like I can't see anything with the dim stock headlights. Great value. The triangle lights also look very cool.
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Reviewed in the United States on July 14, 2023
★★★★★ 5
fast delivery
Color: Yellow & Spot Flood Combo
great product
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Reviewed in the United States on November 4, 2025
★★★★★ 3
Over heated
Color: Yellow & Spot Flood Combo, Color: Yellow & Spot Flood Combo
Over heated after only a few uses. Other wise great
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Reviewed in the United States on March 12, 2024
★★★★★ 5
These are BRIGHT
Color: Yellow & Spot Flood Combo, Color: Yellow & Spot Flood Combo
These are dang BRIGHT! Let’s see how they hold up over time. Using them as Ditch/Spot lights and are great. I had to buy some spade connectors to complete the install but other than that it’s easy to complete the install. I had some brackets from another company to complete my install so the fit looks great.
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Reviewed in the United States on October 17, 2022