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Mack R Truck Engine Parts & Cooling

Looking to keep your rig running smoothly? Check out 4 State Trucks for top-notch Mack R Truck engine parts and cooling components. Our selection has everything you need for a strong performance.
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • Serpentine Belt Tensioner Pulley Assembly Replaces 49501, 38504, 3978022

    Serpentine Belt Tensioner Pulley Assembly Replaces 49501, 38504, 3978022

    AFTERMARKET

    $194.99
    Drive Belt Tensioner & Pulley Assembly* High Quality Tensioner Assembly* Dimensions:  - 1.574 Inch Pulley Width   - 2.952 Inch Pulley O.D.* Made In USA* Sold Individually* Warranty On Tensioner...
    29-07060161
    SKU:
    29-07060161
    Product Type:
    Engine Parts
    Truck Class:
    Heavy Duty
    Width Options:
    1 1/2 Inch
    Make:
    Universal Items
    $194.99
    Qty in Cart: 0
    Price:
    $194.99
    Subtotal:
  • Serpentine Belt Tensioner Pulley Assembly Replaces 49521, 38516, 3281583

    Serpentine Belt Tensioner Pulley Assembly Replaces 49521, 38516, 3281583

    AFTERMARKET

    $203.99
    Drive Belt Tensioner & Pulley Assembly* High Quality Tensioner Assembly* Dimensions:  - 1.310 Inch Pulley Width   - 3.023 Inch Pulley O.D.* Made In USA* Sold Individually* Warranty On Tensioner...
    29-07060157
    SKU:
    29-07060157
    Product Type:
    Engine Parts
    Truck Class:
    Heavy Duty
    Width Options:
    1 1/4 Inch
    Make:
    Universal Items
    $203.99
    Qty in Cart: 0
    Price:
    $203.99
    Subtotal:
  • Serpentine Belt Tensioner Pulley Assembly Replaces 49552, 87Gb46C, 130441000

    Serpentine Belt Tensioner Pulley Assembly Replaces 49552, 87Gb46C, 130441000

    AFTERMARKET

    $114.99
    Drive Belt Tensioner & Pulley Assembly* High Quality Tensioner Assembly* Dimensions:  - 0.984 Inch Pulley Width   - 2.992 Inch Pulley O.D. * Made In USA* Sold Individually* Warranty On Tensioners...
    29-07060163
    SKU:
    29-07060163
    Truck Class:
    Heavy Duty
    Product Type:
    Engine Parts
    Width Options:
    1 Inch
    Make:
    Universal Items
    $114.99
    Qty in Cart: 0
    Price:
    $114.99
    Subtotal:
  • Serpentine Belt Tensioner Pulley Assembly Replaces 38702, 49607, 5270678

    Serpentine Belt Tensioner Pulley Assembly Replaces 38702, 49607, 5270678

    AFTERMARKET

    $169.99
    Drive Belt Tensioner & Pulley Assembly* High Quality Tensioner Assembly* Dimensions:  - 1.3 Inch Pulley Width   - 3.0 Inch Pulley O.D.* Made In USA* Sold Individually* Warranty On Tensioner...
    29-07060148
    SKU:
    29-07060148
    Truck Class:
    Heavy Duty
    Product Type:
    Engine Parts
    Width Options:
    1 1/4 Inch
    Make:
    Universal Items
    $169.99
    Qty in Cart: 0
    Price:
    $169.99
    Subtotal:
  • Serpentine Belt Tensioner Pulley Assembly Replaces 49561, 9062002470

    Serpentine Belt Tensioner Pulley Assembly Replaces 49561, 9062002470

    AFTERMARKET

    $127.99
    Drive Belt Tensioner & Pulley Assembly* High Quality Tensioner Assembly* Dimensions:  - 1.279 Inch Pulley Width   - 2.952 Inch Pulley O.D.* Made In USA* Sold Individually* Warranty On Tensioner...
    29-07060155
    SKU:
    29-07060155
    Truck Class:
    Heavy Duty
    Product Type:
    Engine Parts
    Width Options:
    1 1/4 Inch
    Make:
    Universal Items
    $127.99
    Qty in Cart: 0
    Price:
    $127.99
    Subtotal:
  • Serpentine Belt Tensioner Pulley Assembly Replaces 49566, 38597, 127427001

    Serpentine Belt Tensioner Pulley Assembly Replaces 49566, 38597, 127427001

    AFTERMARKET

    $213.99
    Drive Belt Tensioner & Pulley Assembly* High Quality Tensioner Assembly* Dimensions:  - 1.279 Inch Pulley Width   - 2.952 Inch Pulley O.D.* Made In USA* Sold Individually* Warranty On Tensioner...
    29-07060164
    SKU:
    29-07060164
    Product Type:
    Engine Parts
    Truck Class:
    Heavy Duty
    Width Options:
    1 1/4 Inch
    Make:
    Universal Items
    $213.99
    Qty in Cart: 0
    Price:
    $213.99
    Subtotal:
  • Serpentine Belt Tensioner Pulley Assembly Replaces 49502, 38508, 1352150

    Serpentine Belt Tensioner Pulley Assembly Replaces 49502, 38508, 1352150

    AFTERMARKET

    $233.99
    Drive Belt Tensioner & Pulley Assembly* High Quality Tensioner Assembly* Dimensions:  - 1.574 Inch Pulley Width   - 2.952 Inch Pulley O.D.* Made In USA* Sold Individually* Warranty On Tensioner...
    29-07060160
    SKU:
    29-07060160
    Truck Class:
    Heavy Duty
    Product Type:
    Engine Parts
    Width Options:
    1 1/2 Inch
    Make:
    Universal Items
    $233.99
    Qty in Cart: 0
    Price:
    $233.99
    Subtotal:
  • Cummins N14 Balancer

    Cummins N14 Balancer

    PITTSBURGH POWER

    $265.99
    Balancer Cummins N14/NTC/ Caterpillar C12/13Balance your engine easily without a trip to the machine shop. This device fits right between your crankshaft damper and crankshaft, effectively...
    29-0704033
    SKU:
    29-0704033
    Truck Class:
    Heavy Duty
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $265.99
    Qty in Cart: 0
    Price:
    $265.99
    Subtotal:
  • Serpentine Belt Tensioner Pulley Assembly Replaces 49580, 38607

    Serpentine Belt Tensioner Pulley Assembly Replaces 49580, 38607

    AFTERMARKET

    $265.99
    Drive Belt Tensioner & Pulley Assembly* High Quality Tensioner Assembly* Dimensions:  - 1.574 Inch Pulley Width   - 2.952 Inch Pulley O.D.* Made In USA* Sold Individually* Warranty On Tensioner...
    29-07060147
    SKU:
    29-07060147
    Truck Class:
    Heavy Duty
    Product Type:
    Engine Parts
    Width Options:
    1 1/2 Inch
    Make:
    Universal Items
    $265.99
    Qty in Cart: 0
    Price:
    $265.99
    Subtotal:
  • EGR Temperature Sensor Replaces 4902912, 2596660C1, 4700501

    EGR Temperature Sensor Replaces 4902912, 2596660C1, 4700501

    AFTERMARKET

    $103.99
    Exhaust Gas Temperature SensorThis EGR Temperature Sensor is manufactured to strict OE standards, ensuring perfect functionality and easy installation that matches your vehicle seamlessly. Engineered...
    29-07100036
    SKU:
    29-07100036
    Truck Class:
    Heavy Duty
    Product Type:
    Engine Parts
    Make:
    Universal Items
    Color:
    Black
    $103.99
    Qty in Cart: 0
    Price:
    $103.99
    Subtotal:
  • Turbo Mounting Gasket Replaces 189998PE, 908.570, 908570

    Turbo Mounting Gasket Replaces 189998PE, 908.570, 908570

    AUTOMANN USA

    $22.03
    Turbo Mounting Gasket Paccar MX13 For Elring* High Quality Turbo Mounting Gasket* Sold Individually* Warranty On Turbo Mounting Gaskets Against Defects In Workmanship & Material From Date Of...
    29-07040030
    SKU:
    29-07040030
    Truck Class:
    Heavy Duty
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $22.03
    Qty in Cart: 0
    Price:
    $22.03
    Subtotal:
  • Hose Connector Tee 5/16 Inch

    Hose Connector Tee 5/16 Inch

    AUTOMANN USA

    $9.90
    5/16 Inch Hose Connector Tee* High Quality Conti Hose Connector Tee* Glass-Filled Glass Nylon* 5/16 Inch* Temperature Range -50 Deg F To 275 Deg F* Sold As Pack* Warranty On Conti Hose Connector Tees...
    09-07000006
    SKU:
    09-07000006
    Material Options:
    Nylon
    Product Type:
    Engine Parts
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    $9.90
    Qty in Cart: 0
    Price:
    $9.90
    Subtotal:
  • Tensioner Assembly With 1.574 X 2.952 OD Pulley

    Tensioner Assembly With 1.574 X 2.952 OD Pulley

    AUTOMANN USA

    $199.99
    Tensioner AssemblyMaintain precise belt tension and improve engine efficiency with this high-quality Tensioner Assembly, featuring a pulley measuring 1.574 inches wide and 2.952 inches OD. Sold...
    29-07060135
    SKU:
    29-07060135
    Truck Class:
    Heavy Duty
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $199.99
    Qty in Cart: 0
    Price:
    $199.99
    Subtotal:
  • 75mm 1.32 A/R Switchblade Turbocharger For Detroit Diesel Series 60 12.7l & 14l, Cummins ISX15 & X15 - Up To 600 HP

    75mm 1.32 A/R Switchblade Turbocharger For Detroit Diesel Series 60 12.7l & 14l, Cummins ISX15 & X15 - Up To 600 HP

    SWITCHBLADE TURBO

    $2,235.99
    Switchblade Turbocharger for Cummins ISX15, X15 and Detroit Diesel Series 60 12.7L & 14L Applications* High Quality Switchblade Turbocharger* Significantly Improves Fuel Efficiency By An Estimated 0...
    29-07050018
    SKU:
    29-07050018
    Truck Class:
    Heavy Duty
    Product Type:
    Engine Parts
    Make:
    Universal Items
    Material Options:
    Aluminum
    Location:
    Made In USA
    $2,235.99
    Qty in Cart: 0
    Price:
    $2,235.99
    Subtotal:
  • 82mm 1.45 A/R Switchblade Turbocharger For Detroit Diesel Series 60 12.7L & 14L, Cummins ISX15 & X15 - Up To 825 HP

    82mm 1.45 A/R Switchblade Turbocharger For Detroit Diesel Series 60 12.7L & 14L, Cummins ISX15 & X15 - Up To 825 HP

    SWITCHBLADE TURBO

    $2,655.99
    Switchblade Turbocharger for Cummins ISX15, X15 and Detroit Diesel Series 60 12.7L & 14L Applications* High Quality Switchblade Turbocharger* Significantly Improves Fuel Efficiency By An Estimated 0...
    29-07050020
    SKU:
    29-07050020
    Truck Class:
    Heavy Duty
    Product Type:
    Engine Parts
    Make:
    Universal Items
    Material Options:
    Aluminum
    Location:
    Made In USA
    $2,655.99
    Qty in Cart: 0
    Price:
    $2,655.99
    Subtotal:
  • 80mm 1.45 A/R Switchblade Turbocharger For Detroit Diesel Series 60 12.7L & 14L, Cummins ISX15 & X15 - Up To 800 HP

    80mm 1.45 A/R Switchblade Turbocharger For Detroit Diesel Series 60 12.7L & 14L, Cummins ISX15 & X15 - Up To 800 HP

    SWITCHBLADE TURBO

    $2,515.99
    Switchblade Turbocharger for Cummins ISX15, X15 and Detroit Diesel Series 60 12.7L & 14L Applications* High Quality Switchblade Turbocharger* Significantly Improves Fuel Efficiency By An Estimated 0...
    29-07050019
    SKU:
    29-07050019
    Product Type:
    Engine Parts
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Location:
    Made In USA
    Material Options:
    Aluminum
    $2,515.99
    Qty in Cart: 0
    Price:
    $2,515.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    Prestone Extended Life 50/50 Antifreeze - 1 Gallon

    Prestone Extended Life 50/50 Antifreeze - 1 Gallon

    AFTERMARKET

    Now: $3.99
    Was: $9.99
    Prestone All Vehicle - Antifreeze + CoolantPrestone Extended Life 50/50 Antifreeze prevents corrosion and helps keep the cooling system running more efficiently. It provides protection against...
    09-0702083
    SKU:
    09-0702083
    Product Type:
    Engine Parts
    Truck Class:
    Universal
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Now: $3.99
    Was: $9.99
    Qty in Cart: 0
    Price:
    Now: $3.99
    Was: $9.99
    Subtotal:
  • O- Ring Seal 78 Duro, 1 OD, 0.765 ID

    O- Ring Seal 78 Duro, 1 OD, 0.765 ID

    AUTOMANN USA

    $1.27
    O- Ring Seal Replaces169-7487* High Quality O- Ring Seal Caterpillar* Dimensions:  - 1 Inch OD  - 0.765 Inch ID* 78 Durometer* Sold Individually* Warranty On O- Ring Seal Caterpillars Against Defects...
    29-07200008
    SKU:
    29-07200008
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $1.27
    Qty in Cart: 0
    Price:
    $1.27
    Subtotal:
  • Intake Manifold Gasket For Paccar MX13

    Intake Manifold Gasket For Paccar MX13

    AUTOMANN USA

    $11.45
    Intake Manifold Gasket Replaces 1907399Pe, 261.390, 261390* High Quality Intake Manifold Gasket* Sold Individually* Warranty On Intake Manifold Gaskets Against Defects In Workmanship & Material From...
    29-07120057
    SKU:
    29-07120057
    Truck Class:
    Heavy Duty
    Material Options:
    Rubber
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $11.45
    Qty in Cart: 0
    Price:
    $11.45
    Subtotal:
  • O- Ring Seal 90 Duro, 1.15 OD, 0.984 ID

    O- Ring Seal 90 Duro, 1.15 OD, 0.984 ID

    AUTOMANN USA

    $1.20
    O- Ring Seal Replaces 3D2824, 3H6850, 8U0222* High Quality O- Ring Seal Caterpillar* Dimensions:  - 1.15 Inch OD  - 0.984 Inch ID* 90 Durometer* Sold Individually* Warranty On O- Ring Seal...
    29-07200007
    SKU:
    29-07200007
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $1.20
    Qty in Cart: 0
    Price:
    $1.20
    Subtotal:
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Adding your products to cart

Frequently Asked Questions About Mack R Truck Engine Parts & Cooling

What kinds of components are included in this category?

This category covers engine and cooling system components for Mack R Model trucks, including parts such as radiators, water pumps, fan clutches, hoses, thermostats, gaskets, oil coolers, and related engine hardware. These parts are used to keep the engine running at proper operating temperature and to support overall engine performance and longevity.

How do I know if a part will fit my specific Mack R Model truck?

Mack R Model trucks were produced over a long span of years with several engine options, so fitment can vary based on model year, engine type, and configuration. Before ordering, check the part listing for compatible engine families and specifications, and have your truck's VIN and engine identification numbers on hand. If you are unsure, reach out to our parts specialists to confirm fitment before purchasing.

Should I replace cooling system parts individually or as a set?

It depends on the issue you are addressing. If a single component, such as a water pump or thermostat, has failed, replacing that part alone is often sufficient. However, if your cooling system is older or has multiple worn components, replacing related parts like hoses, clamps, and gaskets at the same time can help prevent repeat failures and reduce additional labor down the road.

What are signs that engine cooling parts need to be replaced?

Common warning signs include engine overheating, visible coolant leaks, low coolant levels without an obvious cause, unusual noises from the fan clutch or water pump, and dashboard temperature warnings. Catching these issues early can help prevent more serious engine damage.

Are these parts new, remanufactured, or aftermarket, and does that affect quality?

Product listings will specify whether a part is new, remanufactured, or aftermarket. Each option can be a reliable choice depending on your budget and needs, but it is important to review the listing details and any included warranty information so you know exactly what you are purchasing and can make the best decision for your application.


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