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2017-2019 6.6L L5P Duramax Replacement Intercooler CSF 6079

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    An L5P intercooler that cracks a tank or leaks a boot dumps boost and the truck pulls timing to protect itself. Replace it with the CSF 6079. This tube-and-fin aluminum cooler fits the 2017-2019 HD trucks only.

    • Build: Tube-and-fin aluminum tanks and core. Core length is 36-1/8 inches. Match the boots to the truck.
    • Part number: CSF 6079 crosses OEM 23208446 and 84424688.
    • Fitment: 2017-2019 Chevrolet Silverado 2500 and 3500 and GMC Sierra 2500 and 3500 with the 6.6L L5P.
    • Does not fit: 2016-older LML trucks and 2020-up L5P trucks.
    • Not in the box: Boots, hoses, and clamps are not included. This is the intercooler core only.
    • Warranty: CSF lists a 1-year limited warranty for the original owner. The term is on the warranty card in the box.

    Order today to secure your replacement. Confirm the truck is a 2017-2019 2500HD or 3500HD L5P before you order.

    Purchase 2017-2019 6.6L L5P Duramax Replacement Intercooler CSF 6079

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    2017-2019 6.6L L5P Duramax Replacement Intercooler CSF 6079

    SKU: csf6079
    $465.58
    Shipping restricted to California

    Qualifies for Free Shipping Over $199



    Fits: L5P Duramax Diesel 2017-2019
    Attention: Ground shipping only for this product. Adding this product to your cart will restrict the entire cart to ground shipping:
     
    Free shipping on orders over $199**Contiguous US only
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    Diesel experts: 615-962-8291
    Fits these vehicles
    • 2017 Chevrolet 6.6L L5P Duramax
    • 2017 GMC 6.6L L5P Duramax
    • 2018 Chevrolet 6.6L L5P Duramax
    • 2018 GMC 6.6L L5P Duramax
    • 2019 Chevrolet 6.6L L5P Duramax
    • 2019 GMC 6.6L L5P Duramax
    Warranty: 1 Year

    An L5P intercooler that cracks a tank or leaks a boot dumps boost and the truck pulls timing to protect itself. Replace it with the CSF 6079. This tube-and-fin aluminum cooler fits the 2017-2019 HD trucks only.

    • Build: Tube-and-fin aluminum tanks and core. Core length is 36-1/8 inches. Match the boots to the truck.
    • Part number: CSF 6079 crosses OEM 23208446 and 84424688.
    • Fitment: 2017-2019 Chevrolet Silverado 2500 and 3500 and GMC Sierra 2500 and 3500 with the 6.6L L5P.
    • Does not fit: 2016-older LML trucks and 2020-up L5P trucks.
    • Not in the box: Boots, hoses, and clamps are not included. This is the intercooler core only.
    • Warranty: CSF lists a 1-year limited warranty for the original owner. The term is on the warranty card in the box.

    Order today to secure your replacement. Confirm the truck is a 2017-2019 2500HD or 3500HD L5P before you order.

    1 Question asked on 2017-2019 6.6L L5P Duramax Replacement Intercooler CSF 6079 •



    Q Craig • 07/06/2026, 0:00:51 AM Will this fit a 2021 model year? All intercoolers I find only list 17-19
    A 07/07/2026, 12:54:45 PM Does not seem to fit.
    Review 2017-2019 6.6L L5P Duramax Replacement Intercooler CSF 6079
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