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Mack RD Truck Engine Parts & Cooling

Check out our top-notch Mack RD Truck engine parts and cooling system components. From reliable radiators to efficient charge coolers, we've got you covered. Find the perfect solutions to elevate your ride at 4 State Trucks!
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  • Price
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  • 69 Inch Hy-T Torque Belt W/ Raw Edge

    69 Inch Hy-T Torque Belt W/ Raw Edge

    AFTERMARKET

    $180.99
    69 Inch Hy-T Torque Belt, Replaces 4BX66* High Quality Torque Belt* Polybutadiene* Outside Length 69 Inch* Thickness 13/32 Inch* Top Width 2 41/64 Inch* Edge Construction Raw Edge* Reinforcing Cord...
    29-07060079
    SKU:
    29-07060079
    Length Options:
    69 Inch
    Material Options:
    Plastic/Poly
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $180.99
    Qty in Cart: 0
    Price:
    $180.99
    Subtotal:
  • Poly- V Non-Ribbed Serpentine Belt Replaces 4080775X

    Poly- V Non-Ribbed Serpentine Belt Replaces 4080775X

    AFTERMARKET

    $73.99
    Poly- V Serpentine Belt Replaces 4080775X, K080776Hd* High Quality Serpentine Belt* Black* Sold Individually* Warranty On Serpentine Belts Against Defects In Workmanship & Material From Date Of...
    29-07060086
    SKU:
    29-07060086
    Material Options:
    Plastic/Poly
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $73.99
    Qty in Cart: 0
    Price:
    $73.99
    Subtotal:
  • Turbocharger For Cummins NTC315, 240

    Turbocharger For Cummins NTC315, 240

    AREA DIESEL SERVICE

    $1,310.99
    TurboCharger Replaces 40333326H 3029514 3522865 196441* High Quality Turbocharger* No Core Needed* Made In USA* Sold Individually* Warranty On Turbochargers Against Defects In Workmanship & Material...
    29-0704126
    SKU:
    29-0704126
    Location:
    Made In USA
    Material Options:
    Cast Iron
    Style Options:
    Cummins
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $1,310.99
    Qty in Cart: 0
    Price:
    $1,310.99
    Subtotal:
  • S480 Non-Wastegated Turbocharger For Caterpillar C15 C16 3406E

    S480 Non-Wastegated Turbocharger For Caterpillar C15 C16 3406E

    AREA DIESEL SERVICE

    $3,026.99
    S480 Big CAT BorgWarner Non-Wastegated TurbochargerThe S480 Big Cat non-wastegated turbo is designed for applications with 750-850 horsepower. It features a 1.58 A/R housing, a forged milled...
    29-0704110
    SKU:
    29-0704110
    Material Options:
    Cast Iron
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $3,026.99
    Qty in Cart: 0
    Price:
    $3,026.99
    Subtotal:
  • Turbo Housing S400SX4 For CAT 3406E

    Turbo Housing S400SX4 For CAT 3406E

    AREA DIESEL SERVICE

    $469.99
    T6 1.58 A/R Twin Scroll Turbine Housing* High Quality Turbo Housing* Cast Iron* 1.58 A/R Turbine Housing* Twin Scroll 5.75 Inch V-Band Outlet* Sold Individually* Warranty On Turbo Housings Against...
    09-0704047
    SKU:
    09-0704047
    Truck Class:
    Universal
    Material Options:
    Cast Iron
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $469.99
    Qty in Cart: 0
    Price:
    $469.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    S410SX Turbo 80MM Super Core For Caterpillar Engines

    S410SX Turbo 80MM Super Core For Caterpillar Engines

    AREA DIESEL SERVICE

    Now: $1,379.05
    Was: $1,948.99
    Super Core Turbo AssemblyThis turbo is designed for single-turbo Caterpillar engines, including C15 Acert, C15, 3406, MBN, 6NZ, 5EK, SDP, MXS, BXS, and NSX models. Please note, a turbine housing is...
    09-0704046
    SKU:
    09-0704046
    Material Options:
    Cast Iron
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    Now: $1,379.05
    Was: $1,948.99
    Qty in Cart: 0
    Price:
    Now: $1,379.05
    Was: $1,948.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    Fixed A/C Blue Orifice Tube For Ford, Sterling

    Fixed A/C Blue Orifice Tube For Ford, Sterling

    BESTFIT TRUCK PARTS

    Now: $1.24
    Was: $1.77
    Air Conditioner Orifice Tube for Automotive ReplacementOur BESTfit valves provide the same high-quality, reliable, and durable performance as factory parts. They effectively restore A/C performance...
    09-070013
    SKU:
    09-070013
    Material Options:
    Plastic/Poly
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    Now: $1.24
    Was: $1.77
    Qty in Cart: 0
    Price:
    Now: $1.24
    Was: $1.77
    Subtotal:
  • 5.5 ID x 6 Inch Rubber Straight Hump Coupler For Intake Piping

    5.5 ID x 6 Inch Rubber Straight Hump Coupler For Intake Piping

    AFTERMARKET

    $42.53
    5 1/2 Inch ID Black Rubber Hump Style Straight Coupler WithCreate a smooth transition between two sections of intake piping with this rubber straight hump hose coupler. Designed for optimal airflow...
    29-070100003
    SKU:
    29-070100003
    Truck Class:
    Heavy Duty
    Material Options:
    Rubber
    Diameter Options:
    5 1/2 Inch
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $42.53
    Qty in Cart: 0
    Price:
    $42.53
    Subtotal:
  • BESTfit Steel Front Sump Oil Pan For Cummins X15 Engines - Replaces 5647538

    BESTfit Steel Front Sump Oil Pan For Cummins X15 Engines - Replaces 5647538

    BESTFIT TRUCK PARTS

    $644.99
    BESTfit Oil Pan W/ Front Sump - Replaces 4386821* High Quality Steel Oil Pan* Front Sump* Fits Cummins X15 2016-Current* Sold Individually* Warranty On Oil Pans Against Defects In Workmanship &...
    29-07200020
    SKU:
    29-07200020
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    $644.99
    Qty in Cart: 0
    Price:
    $644.99
    Subtotal:
  • BESTfit Damper Replaces 8929294, 8929502 For 11.1L, 12.7L, 14.0L Detroit Diesel Series 60 Engines

    BESTfit Damper Replaces 8929294, 8929502 For 11.1L, 12.7L, 14.0L Detroit Diesel Series 60 Engines

    BESTFIT TRUCK PARTS

    $610.99
    BESTfit Damper* High Quality Damper* Sold Individually* Warranty On Dampers Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not OEM)****...
    29-07040027
    SKU:
    29-07040027
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Product Type:
    Engine Parts
    $610.99
    Qty in Cart: 0
    Price:
    $610.99
    Subtotal:
  • BESTfit Cummins ISC, ISL Flywheel 3909908

    BESTfit Cummins ISC, ISL Flywheel 3909908

    BESTFIT TRUCK PARTS

    $520.99
    BESTfit Flywheel* High Quality Flywheel* 158 Teeth Count * Uses Ring Gear* Sold Individually* Warranty On Flywheels Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...
    29-07040029
    SKU:
    29-07040029
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Product Type:
    Engine Parts
    $520.99
    Qty in Cart: 0
    Price:
    $520.99
    Subtotal:
  • BESTfit Damper Replaces 3073587 For Cummins ISM, M1 Engines

    BESTfit Damper Replaces 3073587 For Cummins ISM, M1 Engines

    BESTFIT TRUCK PARTS

    $488.99
    BESTfit Damper* High Quality Damper* Sold Individually* Warranty On Dampers Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not OEM)****...
    29-07040028
    SKU:
    29-07040028
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $488.99
    Qty in Cart: 0
    Price:
    $488.99
    Subtotal:
  • BESTfit Exhaust Manifold Replaces 3931440 For Cummins C Series Engines

    BESTfit Exhaust Manifold Replaces 3931440 For Cummins C Series Engines

    BESTFIT TRUCK PARTS

    $245.99
    BESTfit Exhaust Manifold* High Quality Exhaust Manifold* Turbo Exhaust Position LMFO* Made Of Iron* Sold Individually* Warranty On Exhaust Manifolds Against Defects In Workmanship & Material From...
    29-07120050
    SKU:
    29-07120050
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Product Type:
    Engine Parts
    $245.99
    Qty in Cart: 0
    Price:
    $245.99
    Subtotal:
  • BESTfit Cummins ISC, ISL Flywheel Replaces 3282171

    BESTfit Cummins ISC, ISL Flywheel Replaces 3282171

    BESTFIT TRUCK PARTS

    $798.99
    BESTfit Flywheel* High Quality Flywheel* 138 Teeth Count* Uses A Ring Gear* Sold Individually* Warranty On Flywheels Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...
    29-07040023
    SKU:
    29-07040023
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Material Options:
    Billet Aluminum
    Product Type:
    Engine Parts
    $798.99
    Qty in Cart: 0
    Price:
    $798.99
    Subtotal:
  • BESTfit Cummins ISX12 Flywheel

    BESTfit Cummins ISX12 Flywheel

    BESTFIT TRUCK PARTS

    $537.99
    BESTfit SAE No 1 Flywheel W/ Ring Gear* High Quality Flywheel* Size SAE No.1* 15.5 Inch Clutch* Ring Gear (Included)* Sold Individually* Warranty On Flywheels Against Defects In Workmanship &...
    29-07040024
    SKU:
    29-07040024
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Material Options:
    Billet Aluminum
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    $537.99
    Qty in Cart: 0
    Price:
    $537.99
    Subtotal:
  • BESTfit Detroit Diesel DD15 Flywheel, 160 Tooth Count

    BESTfit Detroit Diesel DD15 Flywheel, 160 Tooth Count

    BESTFIT TRUCK PARTS

    $524.99
    BESTfit Flywheel W/ 12 Mounting Holes, 1 Dowel Pin Hole & 15 Inch Clutch Size* High Quality Flywheel* 12 Mounting Holes* 1 Dowel Pin Hole* 10 Inch Bore Opening* Ring Gear (Included)* 160 Teeth Count*...
    29-07040021
    SKU:
    29-07040021
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Engine Parts
    $524.99
    Qty in Cart: 0
    Price:
    $524.99
    Subtotal:
  • BESTfit Cummins 8.3L ISC-ISL Iron Flywheel Housing

    BESTfit Cummins 8.3L ISC-ISL Iron Flywheel Housing

    BESTFIT TRUCK PARTS

    $876.99
    BESTfit Cast Iron Flywheel Housing* High Quality Flywheel Housing* Cast Iron* Sold Individually* Warranty On Flywheel Housings Against Defects In Workmanship & Material From Date Of Purchase*** High...
    29-07040026
    SKU:
    29-07040026
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Engine Parts
    $876.99
    Qty in Cart: 0
    Price:
    $876.99
    Subtotal:
  • BESTfit Camshaft 691921 For Detroit Diesel Series 60 11.1L Engines

    BESTfit Camshaft 691921 For Detroit Diesel Series 60 11.1L Engines

    BESTFIT TRUCK PARTS

    $865.99
    BESTfit New Aftermarket Detroit CamshaftThis Camshaft fits in your Aftermarket Detroit Diesel Series 60 Heavy Duty Trucks.* High Quality Camshaft* Sold Individually* Warranty On Camshafts Against...
    29-07040009
    SKU:
    29-07040009
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Product Type:
    Engine Parts
    $865.99
    Qty in Cart: 0
    Price:
    $865.99
    Subtotal:
  • BESTfit D11 Flywheel, 153 Tooth Count For Mack MP7, Volvo

    BESTfit D11 Flywheel, 153 Tooth Count For Mack MP7, Volvo

    BESTFIT TRUCK PARTS

    $720.99
    BESTfit Flywheel W/ 12 Mounting Holes, 10 Inch Bore Opening & 15 Inch Clutch Size* High Quality Flywheel* 12 Mounting Holes* 1 Dowel Pin Hole* 10 Inch Bore Opening* Ring Gear (Included)* 153 Teeth...
    29-07040022
    SKU:
    29-07040022
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Product Type:
    Engine Parts
    $720.99
    Qty in Cart: 0
    Price:
    $720.99
    Subtotal:
  • BESTfit Cam Shaft Replaces 4025134 For Cummins ISB Engines

    BESTfit Cam Shaft Replaces 4025134 For Cummins ISB Engines

    BESTFIT TRUCK PARTS

    $198.99
    BESTfit Cam Shaft* High Quality Camshaft* Sold Individually* Warranty On Camshafts Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not...
    29-07040007
    SKU:
    29-07040007
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Product Type:
    Engine Parts
    $198.99
    Qty in Cart: 0
    Price:
    $198.99
    Subtotal:
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Adding your products to cart

Frequently Asked Questions About Mack RD Truck Engine Parts & Cooling

What types of components are included in this category?

This category covers engine and cooling system parts for Mack RD model trucks, including items such as radiators, radiator hoses, water pumps, fan clutches, cooling fans, thermostats, oil coolers, and related gaskets and mounting hardware. These parts work together to keep the engine running at a safe operating temperature and support proper engine function.

How do I know a part will fit my specific Mack RD truck?

Mack RD trucks were built over several years with different engine configurations, so fitment can vary by model year and engine type. Before ordering, check your truck's VIN and engine model against the part's listed specifications, or reach out to our parts team with your truck's details so we can confirm compatibility before you buy.

What are common signs that a cooling system part needs to be replaced?

Watch for symptoms like the engine running hotter than normal, coolant leaks under the truck, a fan clutch that stays engaged or never engages, low coolant levels without an obvious leak, or visible corrosion and cracking on hoses and radiator seams. Catching these issues early can help prevent more serious engine damage.

Should I choose OEM or aftermarket parts for my Mack RD engine?

Both OEM and quality aftermarket cooling and engine parts can be reliable choices, and the right option often depends on your budget, availability, and how the truck is used. We carry a mix of OEM and aftermarket options so you can compare fit, materials, and price to find the part that best suits your needs.

Do I need professional installation for engine and cooling parts?

Some parts, like hoses, thermostats, or belts, are straightforward enough for an experienced DIY mechanic with the right tools. Others, such as water pumps, fan clutches, or radiators, may involve draining coolant, disconnecting engine components, or working near pressurized systems, so many owners choose to have these installed by a qualified diesel technician to ensure proper sealing and function.


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