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Peterbilt 379 Charge Air Coolers

Transform your truck with our extensive range of Peterbilt 379 charge air coolers, designed for durability. With an array of sizes, replacement cores, and pipes, every choice is a winner. Get started on your upgrade today.
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  • BESTfit 304 SS Charge Air Cooler Pipe, Driver Side - Replaces 05-18701 For Peterbilt 359, 378, 379

    BESTfit 304 SS Charge Air Cooler Pipe, Driver Side - Replaces 05-18701 For Peterbilt 359, 378, 379

    BESTFIT TRUCK PARTS

    $356.99
    Replacement Driver Side Stainless Steel Charge Air Cooler Pipe With 4 1/2 Inch DiameterRestore your engine's performance and durability with this BESTfit 304 Stainless Steel Charge Air Cooler Pipe...
    01-070123
    SKU:
    01-070123
    Position:
    Driver Side
    Truck Class:
    Heavy Duty
    Diameter Options:
    4 1/2 Inch
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $356.99
    Qty in Cart: 0
    Price:
    $356.99
    Subtotal:
  • 304 SS Charge Air Cooler Tuber, Driver Side - Replaces 05-17827 For Peterbilt 357, 377, 378, 379

    304 SS Charge Air Cooler Tuber, Driver Side - Replaces 05-17827 For Peterbilt 357, 377, 378, 379

    BESTFIT TRUCK PARTS

    $300.99
    Driver Side Stainless Steel Charge Air Cooler Tube With 4 1/2 Inch DiameterThis 4-1/2 inch diameter charge air cooler tube with a single bend is designed to fit the driver's side for 379, 378, 357,...
    01-0701004
    SKU:
    01-0701004
    Truck Class:
    Heavy Duty
    Position:
    Driver Side
    Diameter Options:
    4 1/2 Inch
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Product Type:
    Engine Parts
    $300.99
    Qty in Cart: 0
    Price:
    $300.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    BESTfit Super Duty Charge Air Cooler 25 X 27.25 Inch For Peterbilt 357, 362, 377, 378 & 379 127 BBC

    BESTfit Super Duty Charge Air Cooler 25 X 27.25 Inch For Peterbilt 357, 362, 377, 378 & 379 127 BBC

    BESTFIT TRUCK PARTS

    $713.99 - $1,350.99
    If you need a reliable, aftermarket charge air cooler for older Peterbilt Super Duty trucks, the BESTfit Super Duty Charge Air Cooler 25 x 27.25 Inch is designed to meet that need. This unit fits...
    PPR_200171
    SKU:
    PPR_200171
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $713.99 - $1,350.99
    Qty in Cart: 0
    Price:
    $713.99 - $1,350.99
    Subtotal:
  • BESTfit Charge Air Cooler 25 X 27.25 Inch For Peterbilt 377, 378 & 379 127 BBC

    BESTfit Charge Air Cooler 25 X 27.25 Inch For Peterbilt 377, 378 & 379 127 BBC

    BESTFIT TRUCK PARTS

    $899.99 - $1,019.99
    The BESTfit Charge Air Cooler Kit 25 x 27.25 Inch is a high-quality aftermarket replacement charge air cooler designed for heavy-duty truck applications. With a core measuring 25 inches in height and...
    PPR_200168
    SKU:
    PPR_200168
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $899.99 - $1,019.99
    Qty in Cart: 0
    Price:
    $899.99 - $1,019.99
    Subtotal:
  • BESTfit Charge Air Cooler 33.5 X 30.5 Inch For Peterbilt

    BESTfit Charge Air Cooler 33.5 X 30.5 Inch For Peterbilt

    BESTFIT TRUCK PARTS

    $877.99 - $1,159.99
    Keeping your Peterbilt 357, 375, 377, 378, 379 and 385 running cool under boost is easier with a BESTfit charge air cooler (33.5 30.5 inch core) that supports efficient intake air temperature...
    PPR_200167
    SKU:
    PPR_200167
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    Material Options:
    Brass Copper
    Width Options:
    33 1/2 Inch
    Height Options:
    30 1/2 Inch
    Length Options:
    2 Inch
    $877.99 - $1,159.99
    Qty in Cart: 0
    Price:
    $877.99 - $1,159.99
    Subtotal:
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Find a Peterbilt 379 High Performance Charge Air Cooler

A properly functioning charge air cooler (also known as an air to air cooler or intercooler) is what keeps your engine running cool under high-pressure heat. Once it’s damaged, it can't be repaired; you'll need to replace the entire part. Thankfully, we carry a wide-assortment of high-quality, heavy-duty replacement charge air coolers that are built to deliver consistent results. What Does the Charge Air Cooler Do? In all turbocharged diesel engines, the turbo compresses incoming air, which naturally heats it up. Hot air carries less oxygen, which means weaker combustion. That's where the charge air cooler comes in it drops the temperature of that pressurized air before it hits the cylinders. Cooler air = denser air = more oxygen = more power, better fuel economy, and lower emissions. If your Peterbilt 379 intercooler isn’t performing, you'll feel it in loss of power, poor mileage, and hotter engine temps. Key Benefits of a Replacement Charge Air Cooler with BESTfit Parts.
  • Restores Lost Power & Torque: a healthy CAC lets cooler, denser air reach your engine, giving you stronger combustion, better throttle response, and the muscle you need to pull uphill or carry heavy loads.
  • Improves Fuel Efficiency: complete combustion = less wasted fuel. With rising diesel costs, even a small boost in MPG can save thousands over the long haul.
  • Reduces Engine Stress & Temperatures: cooler intake air helps regulate internal engine temps. That means less wear and tear, fewer breakdowns, and longer engine life.
  • Lowers Emissions: better combustion helps cut back on black smoke and harmful exhaust keeping your truck compliant with emissions standards.
  • Protects Your Turbocharger: a properly functioning CAC helps reduce backpressure on your turbo. That means it runs cooler and lasts longer, saving you a costly replacement.
Why Replace Your CAC? Even the toughest coolers wear out over time. Common issues include: - Cracked or damaged cores from road debris. - Internal corrosion from moisture in the intake system. - Oil residue and pressure loss from failed turbo seals. - Whistling or hissing from leaking boots or cracked pipes. - Loss of engine performance and poor fuel mileage. If you're noticing black smoke, sluggish acceleration, or high intake temps your CAC may be the culprit. Built for Heavy-Duty Performance Our Peterbilt 379 replacement charge air coolers come in a range of sizes and configurations to match your specific year and engine setup. Whether you need a standard tube and fin cooler or a bar and plate design for extra durability, we've got the right fit for your needs. - Designed for Peterbilt 357, 375, 377, 378, 379, 385. - Sizes from 25" x 27.25" up to 33.5" x 30.5". - Compatible with OE mounting and charge air cooler pipes. - Perfect match for high-performance or high-mileage rebuilds. - Pair your new CAC with reinforced CAC boots, clamps, and pipes for a complete system refresh that locks in boost and keeps your engine breathing easy.

Power Your 379 Model with an Aftermarket CAC Replacement

If you're running a Peterbilt 379 with a worn or leaking intercooler, you're leaving horsepower, fuel economy, and reliability on the table. That's just not good for business. Upgrading to a high-quality replacement charge air cooler restores that lost performance and gives you confidence on every haul. Browse our inventory of air to air cooler parts today and find the perfect fit for your rig. Better airflow starts here. Less heat. More power. No compromises.

Frequently Asked Questions About Peterbilt 379 Charge Air Coolers

What does a charge air cooler do on a Peterbilt 379?

The charge air cooler, also called an intercooler, cools the compressed air coming from the turbocharger before it enters the engine. Cooler, denser air improves combustion efficiency, helps the engine produce more power, and reduces strain on internal components. On the Peterbilt 379, it is mounted in front of or alongside the radiator so airflow from the grille passes through it before reaching the cooling system.

How do I know if my charge air cooler needs to be replaced?

Common signs of a failing charge air cooler include a noticeable loss of engine power, increased black smoke from the exhaust, higher than normal boost leak alarms or codes, oil residue around the cooler fins or end tanks, and visible cracks, dents, or corrosion on the core or seams. If you notice any of these symptoms, it is worth inspecting the unit closely or having it pressure tested for leaks.

Will a replacement charge air cooler fit my Peterbilt 379 without modification?

Fitment depends on the model year and original equipment configuration of your truck, since Peterbilt 379s were built over a long production run with some variation in cooling system layout. We recommend checking the listed year range and dimensions on each product page and comparing them to your existing unit before ordering, especially mounting points and inlet/outlet hose connections.

What materials are these charge air coolers made from, and does that affect durability?

Most charge air coolers for the Peterbilt 379 are constructed with aluminum cores and end tanks, since aluminum offers good heat transfer along with resistance to corrosion. Some units use welded aluminum end tanks for added durability, while others may use a plastic composite tank in certain applications. Aluminum core and tank combinations are generally preferred for heavy duty, high vibration environments like long haul trucking.

Can I install a charge air cooler myself, or should I have a shop do it?

Installation involves draining coolant if the radiator needs to be removed for clearance, disconnecting boost hoses and clamps, unbolting the mounting brackets, and swapping in the new unit before reconnecting everything and checking for leaks. Many experienced DIY mechanics handle this job with basic hand tools, but if you are not comfortable working around pressurized boost lines or do not have a way to properly pressure test the system afterward, having a qualified diesel shop complete the install is a safer option.


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