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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!
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • U Joint Set Replaces SPL2503X, 61250, US250X

    U Joint Set Replaces SPL2503X, 61250, US250X

    AFTERMARKET

    $100.99
    SPL250 Series U Joint SetProtect your truck's drivetrain with this high-quality Universal U-Joint Set, designed to replace SPL2503X, 61250, and US250X. The greaseable spring-tab design allows for...
    09-05210038
    SKU:
    09-05210038
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $100.99
    Qty in Cart: 0
    Price:
    $100.99
    Subtotal:
  • 3 Inch Washer Fluid Pump- 2 Pin Replaces 23357, 1142789

    3 Inch Washer Fluid Pump- 2 Pin Replaces 23357, 1142789

    AUTOMANN USA

    $21.14
    3 Inch Washer Fluid PumpDrive safely in all weather conditions with the 3 Inch Washer Fluid Pump- 2 Pin, a robust and reliable replacement for your truck's washer system. It comes with a washer fluid...
    29-0707001
    SKU:
    29-0707001
    Product Type:
    Engine Parts
    Height Options:
    3 Inch
    Style Options:
    2 Prong
    Make:
    Universal Items
    $21.14
    Qty in Cart: 0
    Price:
    $21.14
    Subtotal:
  • 2 Inch Stainless Steel Machine Screw With 10-32 Pan Head

    2 Inch Stainless Steel Machine Screw With 10-32 Pan Head

    AFTERMARKET

    $1.03
    Machine Screw With 10-32 Pan HeadReliable, rust-resistant, and professionally engineered, the 2 Inch Stainless Steel Machine Screw with 10-32 Pan Head is a must-have for any truck or industrial...
    103724
    SKU:
    103724
    Material Options:
    Stainless Steel
    Length Options:
    2 Inch
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Product Type:
    Frame & Chassis
    $1.03
    Qty in Cart: 0
    Price:
    $1.03
    Subtotal:
  • Oil Pan Plug Single Use Replaces 1982821PE, 233.451, 233451, 1853604PE For PACCAR MX11/MX13

    Oil Pan Plug Single Use Replaces 1982821PE, 233.451, 233451, 1853604PE For PACCAR MX11/MX13

    AUTOMANN USA

    $13.61
    Oil Pan Plug For PACCAR MX11 & MX13 EnginesMaintain a leak-free and reliable engine with this high-quality Oil Pan Plug for PACCAR MX11 and MX13 engines. Designed to replace 1982821PE, 233.451,...
    29-07200023
    SKU:
    29-07200023
    Product Type:
    Engine Parts
    Style Options:
    Paccar
    Color:
    Black
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    $13.61
    Qty in Cart: 0
    Price:
    $13.61
    Subtotal:
  • Water Pump For Detroit Diesel 50 Series 8.5L Engines & Detroit Diesel 60 Series 11.1L & 12.7L Engines

    Water Pump For Detroit Diesel 50 Series 8.5L Engines & Detroit Diesel 60 Series 11.1L & 12.7L Engines

    AFTERMARKET

    $331.99
    Water Pump Replaces 23526039. 46002HDProtect your Detroit Diesel engine from overheating with this high-performance water pump, built for Series 50 8.5L and Series 60 11.1L & 12.7L engines. Featuring...
    29-07120039
    SKU:
    29-07120039
    Material Options:
    Cast Iron
    Style Options:
    Detroit
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $331.99
    Qty in Cart: 0
    Price:
    $331.99
    Subtotal:
  • 2 Piece Clutch Brake Replaces 127200X, 1091467

    2 Piece Clutch Brake Replaces 127200X, 1091467

    AUTOMANN USA

    $40.80
    2 Piece Clutch Brake- 2 Inch Torque Limit* High Quality Clutch Brake* 2 Inch Torque Limit* 2 Pieces* 2.00 Inch Inner Diameter* 4.50 Inch Outer Diameter* 0.38 Inch Width* Sold Individually* Warranty...
    29-07050016
    SKU:
    29-07050016
    Diameter Options:
    4 1/2 Inch
    Product Type:
    Engine Parts
    Width Options:
    1/4 Inch
    Make:
    Universal Items
    $40.80
    Qty in Cart: 0
    Price:
    $40.80
    Subtotal:
  • Water Pump For CAT 3406E Replaces 6I3890, 85107759, 44054HD

    Water Pump For CAT 3406E Replaces 6I3890, 85107759, 44054HD

    AFTERMARKET

    $535.99
    Cast Iron Water Pump For CAT 3406EKeep your CAT 3406E diesel engine performing at its best with this premium replacement water pump, compatible with part numbers 6I3890, 85107759, and 44054HD. The...
    29-07120026
    SKU:
    29-07120026
    Material Options:
    Cast Iron
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $535.99
    Qty in Cart: 0
    Price:
    $535.99
    Subtotal:
  • High Temperature Pilot Bearing Replaces 306VV, 63062RS2, 63062RS2C3, 0212176000

    High Temperature Pilot Bearing Replaces 306VV, 63062RS2, 63062RS2C3, 0212176000

    AUTOMANN USA

    $28.43
    High Temperature Pilot BearingReplace worn pilot bearings with this High Temperature Pilot Bearing, compatible with 306VV, 63062RS2, 63062RS2C3, and 0212176000. Built for extreme heat and constant...
    29-07050008
    SKU:
    29-07050008
    Width Options:
    3/4 Inch
    Diameter Options:
    2 3/4 Inch
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $28.43
    Qty in Cart: 0
    Price:
    $28.43
    Subtotal:
  • Differential Pinion Seal Replaces 105445R91. 358922C91. 405368C91. 68536R91. 27KH113. 364SZ136. 88AX126. 88AX198. 88AX209. 88AX255. 88AX318P2. 88AX346P2. 88AX360P2. 88AX464. 475009N

    Differential Pinion Seal Replaces 105445R91. 358922C91. 405368C91. 68536R91. 27KH113. 364SZ136. 88AX126. 88AX198. 88AX209. 88AX255. 88AX318P2. 88AX346P2. 88AX360P2. 88AX464. 475009N

    AUTOMANN USA

    $5.77
    Differential Pinion Seal 2.75 X 3.883 Inch OD* High Quality Pinion Seal* Differential* 2.75 Inch Shaft Diameter* 3.883 Inch Outer Diameter* 0.374 Inch Width* Sold Individually* Warranty On Pinion...
    29-05210006
    SKU:
    29-05210006
    Width Options:
    1/4 Inch
    Diameter Options:
    3 1/2 Inch
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $5.77
    Qty in Cart: 0
    Price:
    $5.77
    Subtotal:
  • Clutch Brake Replaces 127760X, 797700C1, 8070265

    Clutch Brake Replaces 127760X, 797700C1, 8070265

    AUTOMANN USA

    $27.34
    Clutch Brake- 2 Inch Torque Limit* High Quality Clutch Brake* 2 Inch Torque Limit* 2.00 Inch Inner Diameter* 4.81 Inch Outer Diameter* 0.44 Inch Width* Sold Individually* Warranty On Clutch Brakes...
    29-07050015
    SKU:
    29-07050015
    Product Type:
    Engine Parts
    Diameter Options:
    4 3/4 Inch
    Width Options:
    1/2 Inch
    Make:
    Universal Items
    $27.34
    Qty in Cart: 0
    Price:
    $27.34
    Subtotal:
  • Pinion Seal Replaces 30148. NA710008. 1651281C91. 464244C1. 464244C2. 710008. 4330148

    Pinion Seal Replaces 30148. NA710008. 1651281C91. 464244C1. 464244C2. 710008. 4330148

    AUTOMANN USA

    $21.96
    Pinion Seal 3.90 Bore Diameter X 6.25 Inch* High Quality Pinion Seal* 3.900 Inch Bore Diameter* 2.937 Inch Shaft Diameter* 6.250 Inch Outer Diameter* Sold Individually* Warranty On Pinion Seals...
    29-05210002
    SKU:
    29-05210002
    Product Type:
    Frame & Chassis
    Diameter Options:
    6 1/4 Inch
    Make:
    Universal Items
    $21.96
    Qty in Cart: 0
    Price:
    $21.96
    Subtotal:
  • Differential Pinion Seal Replaces 119429. 210737. 29380. 596310C91

    Differential Pinion Seal Replaces 119429. 210737. 29380. 596310C91

    AUTOMANN USA

    $33.73
    Differential Pinion Seal 3.00 X 4.015 Inch OD* High Quality Pinion Seal* Differential* 3.00 Inch Shaft Diameter* 4.015 Inch Outer Diameter* 0.937 Inch Width* Sold Individually* Warranty On Pinion...
    29-05210005
    SKU:
    29-05210005
    Product Type:
    Frame & Chassis
    Width Options:
    1 Inch
    Diameter Options:
    4 Inch
    Make:
    Universal Items
    $33.73
    Qty in Cart: 0
    Price:
    $33.73
    Subtotal:
  • Pilot Bearing Replaces 63052RSJ, PB63052RS

    Pilot Bearing Replaces 63052RSJ, PB63052RS

    AUTOMANN USA

    $17.81
    Nitrile Shields Pilot Bearing* High Quality Pilot Bearing* Nitrile Shields* 0.977 Inch Inner Diameter* 2.440 Inch Outer Diameter* 0.667 Inch Thick* Sold Individually* Warranty On Pilot Bearings...
    09-07050000
    SKU:
    09-07050000
    Diameter Options:
    2 1/4 Inch
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $17.81
    Qty in Cart: 0
    Price:
    $17.81
    Subtotal:
  • O-Ring Kit- 350 Piece

    O-Ring Kit- 350 Piece

    AFTERMARKET

    $80.99
    O-Ring Kit Replaces ATD-356* High Quality O-Ring Kit* Hnbr 350 Piece* Sold As Kit* Warranty On O-Ring Kits Against Defects In Workmanship & Material From Date Of Purchase* Cross Ref Number ATD-356**...
    09-07000004
    SKU:
    09-07000004
    Product Type:
    Engine Parts
    Make:
    Universal Items
    Position:
    Kit Full
    $80.99
    Qty in Cart: 0
    Price:
    $80.99
    Subtotal:
  • Low Pressure Switch Replaces 228750. 288522. 288522N. R955228750N. 034042

    Low Pressure Switch Replaces 228750. 288522. 288522N. R955228750N. 034042

    AUTOMANN USA

    $11.65
    LP3 Type Low Pressure Switch* High Quality Low Pressure Switch* LP3 Type* 2 Terminals* At Air Pressure Above 60 PSI, Contacts Are Open. Closes At 60 PSI Dropping Pressure* Sold Individually* Warranty...
    09-05040096
    SKU:
    09-05040096
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $11.65
    Qty in Cart: 0
    Price:
    $11.65
    Subtotal:
  • AC Compressor For New Holland Tractor 7H15 6 Groove Clutch

    AC Compressor For New Holland Tractor 7H15 6 Groove Clutch

    BESTFIT TRUCK PARTS

    $304.99
    A/C Compressor - 6 Groove Clutch* High Quality A/C Compressor* SD7H15* 6 Groove Clutch* Fits New Holland Tractor* Sold Individually* Warranty On A/C Compressors Against Defects In Workmanship &...
    80-070003
    SKU:
    80-070003
    Size Options:
    18 Gauge
    Product Type:
    Engine Parts
    Style Options:
    3 Hole
    Make:
    Universal Items
    Make:
    Other - Semi-Truck
    $304.99
    Qty in Cart: 0
    Price:
    $304.99
    Subtotal:
  • Stamped Steel Oil Pan 2233369PE, 1883597PE For Paccar MX13 Front Sump

    Stamped Steel Oil Pan 2233369PE, 1883597PE For Paccar MX13 Front Sump

    AKMI

    $765.99
    Replacement MX-13 Series Oil Pan* High Quality Oil Pan* For Paccar MX 13 EPA 17* Stampted Steel* Sold Individually* Warranty On Oil Pans Against Defects In Workmanship & Material From Date Of...
    29-072000013
    SKU:
    29-072000013
    Product Type:
    Engine Parts
    Material Options:
    Steel
    Style Options:
    Paccar
    Make:
    Universal Items
    $765.99
    Qty in Cart: 0
    Price:
    $765.99
    Subtotal:
  • Oil Pan 3692887 For Cummins X15 Front Sump

    Oil Pan 3692887 For Cummins X15 Front Sump

    AKMI

    $820.99
    Replacement Cummins X15 Front Sump Oil Pan* High Quality Oil Pan* Cummins Oil Pan* Used Primarily On EPA13 15 Liter ISX/QSX Front Sump* Sold Individually* Warranty On Oil Pans Against Defects In...
    29-072000012
    SKU:
    29-072000012
    Material Options:
    Steel
    Style Options:
    Cummins
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $820.99
    Qty in Cart: 0
    Price:
    $820.99
    Subtotal:
  • Installation Kit For Manifold N14PEM

    Installation Kit For Manifold N14PEM

    AKMI

    $59.99
    Replacement Manifold N14PEM Installation Kit* High Quality Manifold Install Kit* Includes:  - Gaskets  - Studs  - Bolts  - Nuts* Sold As Kit* Warranty On Manifold Install Kits Against Defects In...
    29-0704130
    SKU:
    29-0704130
    Product Type:
    Engine Parts
    Position:
    Kit Full
    Make:
    Universal Items
    $59.99
    Qty in Cart: 0
    Price:
    $59.99
    Subtotal:
  • Serpentine Belt Tensioner Pulley Assembly- Replaces 49561, 9062002470

    Serpentine Belt Tensioner Pulley Assembly- Replaces 49561, 9062002470

    AFTERMARKET

    $142.99
    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...
    29-07060159
    SKU:
    29-07060159
    Truck Class:
    Heavy Duty
    Width Options:
    1 1/4 Inch
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $142.99
    Qty in Cart: 0
    Price:
    $142.99
    Subtotal:
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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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