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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
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  • Price
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  • RigMaster APU Fuel Injector Pump Kit For Kohler Engine

    RigMaster APU Fuel Injector Pump Kit For Kohler Engine

    RIGMASTER

    $954.99
    Kohler Diesel OEM Part ED0065851510-S Fuel Feeding Pump* High Quality Injection Pump Kit* Includes   - Fuel Injector Pump  - Fuel Injector Spark Arrestor  - Copper Washer* Sold Individually* Warranty...
    ED0065902900SK
    SKU:
    ED0065902900SK
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Location:
    Made In USA
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $954.99
    Qty in Cart: 0
    Price:
    $954.99
    Subtotal:
  • RigMaster APU Sub-Frame Kit For T46K Units

    RigMaster APU Sub-Frame Kit For T46K Units

    RIGMASTER

    $533.99
    RigMaster Sub-Frame Kit For T46K Units With Or Without Heat* High Quality Sub Frame Kit* For T46K Units With Or Without Heat* Sold Individually* Warranty On Sub Frame Kits Against Defects In...
    KT10050K
    SKU:
    KT10050K
    Location:
    Made In USA
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $533.99
    Qty in Cart: 0
    Price:
    $533.99
    Subtotal:
  • RigMaster APU Linz To Linz Generator Replacement Kit For Kohler Engine

    RigMaster APU Linz To Linz Generator Replacement Kit For Kohler Engine

    RIGMASTER

    $1,296.99
    Generator Replacement Kit For Kohler Engine* High Quality Generator Replacement Kit* Linz To Linz * Sold Individually* Warranty On Generator Replacement Kits Against Defects In Workmanship & Material...
    KT7029K
    SKU:
    KT7029K
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $1,296.99
    Qty in Cart: 0
    Price:
    $1,296.99
    Subtotal:
  • RigMaster APU Starter For Kohler Engine

    RigMaster APU Starter For Kohler Engine

    RIGMASTER

    $781.99
    RigMaster Starter For Kohler Engine OEM Part* High Quality Starter* 12 Volt* Sold Individually* Warranty On Starters Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...
    ED0058402240S
    SKU:
    ED0058402240S
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $781.99
    Qty in Cart: 0
    Price:
    $781.99
    Subtotal:
  • RigMaster APU Fuel Filter For Caterpillar, Perkins

    RigMaster APU Fuel Filter For Caterpillar, Perkins

    RIGMASTER

    $28.08
    RigMaster Fuel Filter For Caterpillar & Perkins Engines* High Quality Fuel Filter* Sold Individually* Warranty On Fuel Filters Against Defects In Workmanship & Material From Date Of Purchase*** High...
    33262
    SKU:
    33262
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $28.08
    Qty in Cart: 0
    Price:
    $28.08
    Subtotal:
  • RigMaster APU Water Pump For Caterpillar, Perkins

    RigMaster APU Water Pump For Caterpillar, Perkins

    RIGMASTER

    $485.99
    OEM RigMaster Water Pump For Caterpillar & Perkins Engines* High Quality Water Pump* Sold Individually* Warranty On Water Pumps Against Defects In Workmanship & Material From Date Of Purchase*** High...
    145017380
    SKU:
    145017380
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $485.99
    Qty in Cart: 0
    Price:
    $485.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    RigMaster Serpentine Drive Belt - RM-RP8-108 For Caterpillar, Perkins Engines

    RigMaster Serpentine Drive Belt - RM-RP8-108 For Caterpillar, Perkins Engines

    RIGMASTER

    Now: $11.45
    Was: $37.36
    Serpentine Drive Belt - RP8-108* High Quality Serpentine Drive Belt* Sold Individually * Warranty On Serpentine Drive Belts Against Defects In Workmanship & Material From Date Of Purchase*** High...
    RP8108
    SKU:
    RP8108
    Truck Class:
    Universal
    Material Options:
    Rubber
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    Now: $11.45
    Was: $37.36
    Qty in Cart: 0
    Price:
    Now: $11.45
    Was: $37.36
    Subtotal:
  • RigMaster Analog Speed Sensor Upgrade Kit For Caterpillar, Perkins Engines

    RigMaster Analog Speed Sensor Upgrade Kit For Caterpillar, Perkins Engines

    RIGMASTER

    $128.99
    Analog Speed Sensor Upgrade Kit - RP7-106KThe Analog Kit includes a Mechanical/Analog Speed Sensor, an Analog Speed Sensor Connector with Pigtail, a Speed Sensor Bracket, two Yellow Zinc Cap Screws,...
    RP7106K
    SKU:
    RP7106K
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $128.99
    Qty in Cart: 0
    Price:
    $128.99
    Subtotal:
  • RigMaster 20A Power Module, LED Display, 10-Pin Output, 8-Pin Input

    RigMaster 20A Power Module, LED Display, 10-Pin Output, 8-Pin Input

    RIGMASTER

    $463.99
    High-Capacity 20 Amp Power Module W/ LED Display - 10 Pin Output, 8 pin Input - RP50-2505* High Quality Power Module * 20 Amps * LED Display  - Green= OK  - Red= Problem * 10 Pin Output * 8 Pin...
    RP502505
    SKU:
    RP502505
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $463.99
    Qty in Cart: 0
    Price:
    $463.99
    Subtotal:
  • RigMaster Auxiliary Power Unit For Kohler Engine

    RigMaster Auxiliary Power Unit For Kohler Engine

    RIGMASTER

    $10,401.99
    Kohler Auxiliary Power Unit - LG200-K* High Quality Auxiliary Power Unit* Dimensions:   - 25 Inch Depth  - 21 Inch Width  - 28 Inch Height * 170 Amps For Battery Charging * 600 Airflow CFM* 24,000...
    LG200K
    SKU:
    LG200K
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $10,401.99
    Qty in Cart: 0
    Price:
    $10,401.99
    Subtotal:
  • RigMaster A/C Expansion Valve For Caterpillar, Perkins, Kohler

    RigMaster A/C Expansion Valve For Caterpillar, Perkins, Kohler

    RIGMASTER

    $45.34
    Expansion Valve - LG9-003* High Quality Expansion Valve* Sold Individually * Warranty On Expansion Valves Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket...
    LG9003
    SKU:
    LG9003
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $45.34
    Qty in Cart: 0
    Price:
    $45.34
    Subtotal:
  • RigMaster Poly Serpentine Belt For A/C Compressor

    RigMaster Poly Serpentine Belt For A/C Compressor

    RIGMASTER

    $64.99
    A/C Compressor Belt - Serpentine - LG8-006* High Quality Serpentine Belt * Poly * For A/C Compressor * Sold Individually * Warranty On Serpentine Belts Against Defects In Workmanship & Material From...
    LG8006
    SKU:
    LG8006
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $64.99
    Qty in Cart: 0
    Price:
    $64.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    RigMaster Generator / AC Compressor Serpentine Belt For Kohler Engine

    RigMaster Generator / AC Compressor Serpentine Belt For Kohler Engine

    RIGMASTER

    Now: $13.92
    Was: $45.45
    Kohler Generator/AC Compressor Belt - KT8-001* High Quality Serpentine Belt * For Generator/ AC Compressor* Sold Individually * Warranty On Serpentine Belts Against Defects In Workmanship & Material...
    KT8001
    SKU:
    KT8001
    Truck Class:
    Heavy Duty
    Material Options:
    Rubber
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    Now: $13.92
    Was: $45.45
    Qty in Cart: 0
    Price:
    Now: $13.92
    Was: $45.45
    Subtotal:
  • RigMaster Oil Filter - Longer Version For Caterpillar, Perkins Engines

    RigMaster Oil Filter - Longer Version For Caterpillar, Perkins Engines

    RIGMASTER

    $10.62
    Longer Version Oil Filter For Caterpillar, Perkins Engines - LG1233* High Quality Oil Filter * Longer Version * Sold Individually * Warranty On Oil Filters Against Defects In Workmanship & Material...
    LG1233
    SKU:
    LG1233
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $10.62
    Qty in Cart: 0
    Price:
    $10.62
    Subtotal:
  • RigMaster Fan / Alternator V Belt 10 MM x 850 MM For Kohler Engine

    RigMaster Fan / Alternator V Belt 10 MM x 850 MM For Kohler Engine

    RIGMASTER

    $17.40
    Kohler V Belt For Fan And Alternator - KT8-003* High Quality V Belt * 10 MM x 850 MM* For Fan And Alternator * Sold Individually * Warranty On V Belts Against Defects In Workmanship & Material From...
    KT8003
    SKU:
    KT8003
    Truck Class:
    Heavy Duty
    Material Options:
    Rubber
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $17.40
    Qty in Cart: 0
    Price:
    $17.40
    Subtotal:
  • RigMaster Armor Plated Vibration Mount / Grommet

    RigMaster Armor Plated Vibration Mount / Grommet

    RIGMASTER

    $26.47
    Armor Plated Vibration Mount / Grommet - LG11-001* High Quality Vibration Mount * Armor Plated * Grommet * Sold Individually* Warranty On Vibration Mounts Against Defects In Workmanship & Material...
    LG11001
    SKU:
    LG11001
    Truck Class:
    Heavy Duty
    Material Options:
    Rubber
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $26.47
    Qty in Cart: 0
    Price:
    $26.47
    Subtotal:
  • RigMaster Analog Speed Sensor Upgrade Kit For T4-6 Units W/ Kohler Engine

    RigMaster Analog Speed Sensor Upgrade Kit For T4-6 Units W/ Kohler Engine

    RIGMASTER

    $181.99
    Kohler Analog Kit - KT7-106K* High Quality Analog Kit * Includes:  - Mechanical/Analog Speed Sensor   - Analog Speed Sensor Connector With Pigtail   - Tensioner Bracket   - Ring Terminal With Extra...
    KT7106K
    SKU:
    KT7106K
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $181.99
    Qty in Cart: 0
    Price:
    $181.99
    Subtotal:
  • RigMaster Diesel Glow Plug For Kohler Engine

    RigMaster Diesel Glow Plug For Kohler Engine

    RIGMASTER

    $60.99
    Kohler Diesel Glow Plug - K-004* High Quality Glow Plug* Sold Individually* Warranty On Glow Plugs Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket...
    K004
    SKU:
    K004
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $60.99
    Qty in Cart: 0
    Price:
    $60.99
    Subtotal:
  • RigMaster Analog Speed Sensor Upgrade Kit For LG200 Units W/ Kohler Engine

    RigMaster Analog Speed Sensor Upgrade Kit For LG200 Units W/ Kohler Engine

    RIGMASTER

    $131.99
    Kohler Analog Speed Sensor Upgrade Kit - KL7-106K* High Analog Kit * Includes  - Mechanical/Analog Speed Sensor   - Analog Speed Sensor Connector With Pigtail   - Speed Sensor Bracket  - (2)...
    KL7106K
    SKU:
    KL7106K
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $131.99
    Qty in Cart: 0
    Price:
    $131.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    RigMaster Non- Return Valve For Kohler Engine

    RigMaster Non- Return Valve For Kohler Engine

    RIGMASTER

    Now: $58.44
    Was: $357.99
    Kohler Non- Return Valve - ED0096800410-SThe non-return valve for Kohler engines allows compressed air to flow in one direction while preventing flow in the other, ensuring protection when fitted...
    ED0096800410S
    SKU:
    ED0096800410S
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    Now: $58.44
    Was: $357.99
    Qty in Cart: 0
    Price:
    Now: $58.44
    Was: $357.99
    Subtotal:
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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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