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Mack Trucks

Shop Mack truck parts and accessories for popular models like the Superliner, R, RD, CX, or CH/CHN/CHU.
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • Transmission Pressure Switch Replaces 29549658, 17KP489 For Allison Transmissions

    Transmission Pressure Switch Replaces 29549658, 17KP489 For Allison Transmissions

    AUTOMANN USA

    $33.30
    2.11 Inch Transmission Pressure Switch-2 PinAvoid costly transmission repairs with this high-performance Transmission Pressure Switch, engineered to replace 29549658 and 17KP489 for Allison...
    29-07100028
    SKU:
    29-07100028
    Style Options:
    2 Prong
    Product Type:
    Engine Parts
    Height Options:
    2 Inch
    Make:
    Universal Items
    $33.30
    Qty in Cart: 0
    Price:
    $33.30
    Subtotal:
  • 32 Inch Nylon 11 Blade Fan Blade Replaces 3809753C1, 3809753C2, 47354461001, 85138, 010023828 For Cummins ISX, Caterpillar C13 Engines

    32 Inch Nylon 11 Blade Fan Blade Replaces 3809753C1, 3809753C2, 47354461001, 85138, 010023828 For Cummins ISX, Caterpillar C13 Engines

    AUTOMANN USA

    $312.99
    32 Inch Fan Blade- 11 BladesProtect your engine from overheating with this durable 32 Inch Nylon 11 Blade Fan Blade, replacement for Cummins ISX and Caterpillar C13 trucks. Featuring 11 nylon blades,...
    29-07060178
    SKU:
    29-07060178
    Diameter Options:
    32 Inch
    Product Type:
    Engine Parts
    Material Options:
    Nylon
    Make:
    Universal Items
    $312.99
    Qty in Cart: 0
    Price:
    $312.99
    Subtotal:
  • Thermostat Replaces 2882757, 2952204, 3335550, 4318197, 4318947, 4973373, 34148 For Cummins

    Thermostat Replaces 2882757, 2952204, 3335550, 4318197, 4318947, 4973373, 34148 For Cummins

    AUTOMANN USA

    $47.09
    1.77 X 2.26 Inch ThermostatMaintain optimal engine operation with this high-performance 180 F Thermostat Cummins engines. Featuring precision coil and body dimensions, it delivers consistent cooling...
    29-071000031
    SKU:
    29-071000031
    Diameter Options:
    2 1/4 Inch
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Height Options:
    1 3/4 Inch
    Make:
    Universal Items
    $47.09
    Qty in Cart: 0
    Price:
    $47.09
    Subtotal:
  • Transmission Pressure Switch Replaces 29512944, 29542944, 29552364 For Allison Transmissions

    Transmission Pressure Switch Replaces 29512944, 29542944, 29552364 For Allison Transmissions

    AFTERMARKET

    $46.02
    2.98 X 4.70 Inch 2 Pin Transmission Pressure Switch W/ Inch CableMaximize the life of your transmission with this heavy-duty Transmission Pressure Switch, designed for Allison transmissions. With a...
    29-07100027
    SKU:
    29-07100027
    Product Type:
    Engine Parts
    Length Options:
    4 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    $46.02
    Qty in Cart: 0
    Price:
    $46.02
    Subtotal:
  • 32 Inch Nylon 9 Blade Fan Blade Replaces 981813202, 991813202

    32 Inch Nylon 9 Blade Fan Blade Replaces 981813202, 991813202

    AFTERMARKET

    $224.99
    32 Inch Fan Blade- 9 BladesMaintain peak truck engine performance with this premium 32 Inch Nylon 9 Blade Fan Blade. Its 9 nylon blades, clockwise rotation, and 12 bolt holes provide efficient...
    29-07060184
    SKU:
    29-07060184
    Material Options:
    Nylon
    Diameter Options:
    32 Inch
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $224.99
    Qty in Cart: 0
    Price:
    $224.99
    Subtotal:
  • Turbo Charger Mounting Kit For Caterpillar 3406E

    Turbo Charger Mounting Kit For Caterpillar 3406E

    POWER PLAY PRODUCTS

    $91.99
    Caterpillar 3406E Turbo Charger Mounting KitKeep your Caterpillar 3406E engine running efficiently with this high-performance Turbo Charger Mounting Kit. The kit includes all required gaskets and...
    29-070400083
    SKU:
    29-070400083
    Style Options:
    Caterpillar
    Position:
    Kit Full
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $91.99
    Qty in Cart: 0
    Price:
    $91.99
    Subtotal:
  • 32 Inch Nylon 9 Blade Fan Blade Replaces 393256-32, 3415031, 3507212C1, 3571552C1, 981813253, 991813253

    32 Inch Nylon 9 Blade Fan Blade Replaces 393256-32, 3415031, 3507212C1, 3571552C1, 981813253, 991813253

    AUTOMANN USA

    $197.99
    32 Inch Fan Blade- 9 BladesKeep your truck engine cool under the toughest conditions with this high-quality 32 Inch Nylon 9 Blade Fan Blade. Featuring 9 blades made of durable nylon, clockwise...
    29-0706015
    SKU:
    29-0706015
    Material Options:
    Nylon
    Diameter Options:
    32 Inch
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $197.99
    Qty in Cart: 0
    Price:
    $197.99
    Subtotal:
  • Thermostat Replaces 2477133, 7C3095, 34289 For Caterpillar

    Thermostat Replaces 2477133, 7C3095, 34289 For Caterpillar

    AUTOMANN USA

    $37.10
    1.811 X 2.26 Inch ThermostatPrevent engine overheating with this heavy-duty Caterpillar thermostat. Rated at 192F, it maintains proper engine temperature for maximum performance and reliability. With...
    29-07020004
    SKU:
    29-07020004
    Style Options:
    Caterpillar
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $37.10
    Qty in Cart: 0
    Price:
    $37.10
    Subtotal:
  • Turbo Charger Mounting Kit For Caterpillar C15

    Turbo Charger Mounting Kit For Caterpillar C15

    POWER PLAY PRODUCTS

    $127.99
    Caterpillar C15 Turbo Charger Mounting KitEnsure secure turbo mounting and prevent leaks with this durable Turbo Charger Mounting Kit for Caterpillar C15 engines. Complete with mounting hardware and...
    29-070400084
    SKU:
    29-070400084
    Style Options:
    Caterpillar
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $127.99
    Qty in Cart: 0
    Price:
    $127.99
    Subtotal:
  • 14.00 Inch X 1.5 Inch Push Type Clutch Assembly Replaces LP1047104, LP1505134

    14.00 Inch X 1.5 Inch Push Type Clutch Assembly Replaces LP1047104, LP1505134

    AFTERMARKET

    $954.99
    Single Plate Clutch Assembly- 500 Lb- Ft TorqueOptimize your truck's drivetrain efficiency with this high-performance 14.00 Inch x 1.5 Inch Push Type Clutch Assembly. Its single plate, 8-spring...
    29-07050013
    SKU:
    29-07050013
    Product Type:
    Engine Parts
    Material Options:
    Steel
    Length Options:
    14 1/2 Inch
    Width Options:
    1 1/2 Inch
    Make:
    Universal Items
    $954.99
    Qty in Cart: 0
    Price:
    $954.99
    Subtotal:
  • 13.78 Inch x 1.5 Inch Push Type Clutch Assembly Replaces 107621-1, 1076211

    13.78 Inch x 1.5 Inch Push Type Clutch Assembly Replaces 107621-1, 1076211

    AFTERMARKET

    $747.99
    Single Plate Clutch Assembly- 2400 Lb Plate Load, 500 Lb- Ft TorqueEnsure smooth power transfer and drivetrain reliability with this premium 13.78 Inch x 1.5 Inch Push Type Clutch Assembly...
    29-07050010
    SKU:
    29-07050010
    Product Type:
    Engine Parts
    Material Options:
    Steel
    Make:
    Universal Items
    $747.99
    Qty in Cart: 0
    Price:
    $747.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Turbocharger Exhaust Pipe Gasket For Cummins ISX 12, ISX 15, X12 & X15 Engines

    Turbocharger Exhaust Pipe Gasket For Cummins ISX 12, ISX 15, X12 & X15 Engines

    DAYTON / DORMAN

    $11.53
    3.75 Inch ID X 5.00 Inch OD Exhaust Pipe GasketPrevent exhaust leaks and maintain turbo efficiency with this high-quality Turbocharger Exhaust Pipe Gasket, compatible with Cummins ISX 12, ISX 15,...
    29-070400085
    SKU:
    29-070400085
    Product Type:
    Engine Parts
    Diameter Options:
    5 Inch
    Style Options:
    Cummins
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $11.53
    Qty in Cart: 0
    Price:
    $11.53
    Subtotal:
  • Fuel Cover Locking Collar Replaces 23514061, 1694754C1, 380042, 3948920 For Cummins & Davco Fuel Pro 382 Fuel-Water Separators

    Fuel Cover Locking Collar Replaces 23514061, 1694754C1, 380042, 3948920 For Cummins & Davco Fuel Pro 382 Fuel-Water Separators

    AUTOMANN USA

    $21.62
    5 Inch ID X 6.210 Inch OD Fuel Cover Locking CollarMaintain a secure, leak-free fuel system with this premium Fuel Cover Locking Collar. Perfect for Cummins and Davco Fuel Pro 382 Fuel-Water...
    29-0703001
    SKU:
    29-0703001
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $21.62
    Qty in Cart: 0
    Price:
    $21.62
    Subtotal:
  • AC Discharge Hose Assembly Replaces F50-6242-1275, F5062421275 For PACCAR

    AC Discharge Hose Assembly Replaces F50-6242-1275, F5062421275 For PACCAR

    AFTERMARKET

    $398.99
    2- Pin AC Discharge Hose AssemblyDependable HVAC operation begins with this precision AC discharge hose assembly. Designed to replace F50-6242-1275 and F5062421275, it connects your compressor to the...
    29-07000015
    SKU:
    29-07000015
    Style Options:
    Paccar
    Product Type:
    Engine Parts
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $398.99
    Qty in Cart: 0
    Price:
    $398.99
    Subtotal:
  • Expansion Valve Replaces 4475001482, 31-31218

    Expansion Valve Replaces 4475001482, 31-31218

    AFTERMARKET

    $60.99
    2.895 X 1.00 X 1.390 Inch Block Type Expansion ValveEnsure efficient airflow and temperature regulation with this heavy-duty expansion valve. Designed to replace 4475001482 and 31-31218, this 1 Ton...
    29-07000010
    SKU:
    29-07000010
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $60.99
    Qty in Cart: 0
    Price:
    $60.99
    Subtotal:
  • Expansion Valve Replaces 101107, 140030103, 1601, 31-30956, 329499, 12-2013A

    Expansion Valve Replaces 101107, 140030103, 1601, 31-30956, 329499, 12-2013A

    AFTERMARKET

    $50.99
    8.895 X 1.000 X 1.875 Inch Block Type Expansion ValveKeep your truck's air conditioning system running at peak efficiency with this high-quality expansion valve. Designed to replace 101107,...
    29-07000012
    SKU:
    29-07000012
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $50.99
    Qty in Cart: 0
    Price:
    $50.99
    Subtotal:
  • Pivot Bushing Kit Replaces 65352502

    Pivot Bushing Kit Replaces 65352502

    AFTERMARKET

    $457.99
    Pivot Bushing KitEngineered for heavy-duty suspension systems, this pivot bushing kit provides complete service coverage. The kit includes pivot bushing, eccentric and concentric collars, wear pads,...
    29-05250029
    SKU:
    29-05250029
    Product Type:
    Frame & Chassis
    Position:
    Kit Full
    Make:
    Universal Items
    $457.99
    Qty in Cart: 0
    Price:
    $457.99
    Subtotal:
  • Knuckle Spacer Replaces 005208, R-005208

    Knuckle Spacer Replaces 005208, R-005208

    AFTERMARKET

    $104.99
    2.937 Inch Knuckle Spacer Used On Hendrickson Turner Lift AxleReduce alignment issues and extend component life with a knuckle spacer built for accuracy. This high-quality replacement spacer is...
    29-05200030
    SKU:
    29-05200030
    Product Type:
    Trailer
    Make:
    Universal Items
    $104.99
    Qty in Cart: 0
    Price:
    $104.99
    Subtotal:
  • Piston Style Type 18/24 Disc Brake Replaces K025670, MJB1824DT051, 745K025670

    Piston Style Type 18/24 Disc Brake Replaces K025670, MJB1824DT051, 745K025670

    AFTERMARKET

    $317.99
    10.120 Inch Piston Style Type 18/24 Disc Brake W/ 2.5 Inch Stroke LengthAchieve reliable and precise braking with this Piston Style Type 18/24 Disc Brake. Features a 2.5-inch stroke length, two top...
    29-05170029
    SKU:
    29-05170029
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $317.99
    Qty in Cart: 0
    Price:
    $317.99
    Subtotal:
  • Knuckle Spacer Replaces 005881, R-005881 For Hendrickson-Turner Suspension

    Knuckle Spacer Replaces 005881, R-005881 For Hendrickson-Turner Suspension

    AFTERMARKET

    $104.99
    2.562 Inch Knuckle Spacer Used On Hendrickson Turner Lift AxleUpgrade your suspension service with a knuckle spacer built for heavy-duty reliability. Replacement for 005881 and R-005881, this...
    29-05250040
    SKU:
    29-05250040
    Product Type:
    Exterior
    Make:
    Universal Items
    $104.99
    Qty in Cart: 0
    Price:
    $104.99
    Subtotal:
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Mack Semi Truck Parts and Accessories

Keeping your Mack on the road means having access to the right parts—fast. At 4 State Trucks, we carry a full line of aftermarket Mack truck parts and accessories to help you stay ahead of maintenance, minimize downtime, and keep your business rolling. Whether you’re running a Mack Superliner or a classic Mack R Model, we’ve got the semi truck parts that get the job done.

High-Quality Parts for Every Mack Truck Model

Whether you're replacing worn parts or upgrading your rig’s performance, we carry commercial truck parts for a wide range of Mack models. From the rugged Superliner to the workhorse R Model, our inventory includes everything from exterior body panels to cab accessories and under-hood components. This Mack collection is built to meet the same heavy-duty standards your truck was designed for. If you're looking for reliable truck parts online, you've come to the right place.

Best Features

When you invest in semi truck parts, you need gear that’s built for durability and efficiency. Our aftermarket Mack parts are engineered to hold up under pressure and deliver the performance your business depends on. Top features include:
  • Diesel-compatible components designed for fuel efficiency and power.
  • Tough, road-ready construction for maximum durability.
  • Easy-to-install parts for both urban and off-road applications.
  • Support for a wide range of configurations and payload needs.
  • A huge variety of truck parts and accessories to match your rig’s specs.
  • Whether you’re tackling local hauls or cross-country jobs, these parts are built to take the abuse and keep on running.

    Shop Commercial Truck Parts Online with 4 State Trucks

    From longtime Mack drivers to growing fleets, truckers across the country count on 4 State Trucks for dependable online truck parts and expert service. Whether you’re keeping an old R Model alive or upgrading your Superliner with modern components, we’re here to help with quality you can trust.

    Frequently Asked Questions About Mack Truck Parts

    Will these aftermarket parts fit my specific Mack truck model and year?

    Our Mack truck parts are designed to fit most common models including the Anthem, Pinnacle, Granite, and older CH, CL, and Vision series. However, compatibility can vary by year and specific configuration. We recommend checking the product description for model years listed, or contact our support team with your OEM number for exact fitment verification. Many parts fit multiple years (for example, 2008-2017 Pinnacle models often share components), but critical items like bumpers and hoods may have year-specific variations.

    What's the difference between chrome, stainless steel, and painted finishes for bumpers and exterior parts?

    Chrome-plated steel bumpers offer the classic mirror finish but require regular polishing and can eventually show pitting or rust if the chrome layer is damaged. Stainless steel parts cost more initially but resist corrosion better and maintain their appearance with less maintenance - just periodic cleaning with stainless polish. Painted finishes are the most economical option and can be color-matched to your truck, but may need touch-ups after stone chips or scratches. For harsh winter conditions with road salt, stainless steel typically provides the best long-term value.

    Can I install these parts myself, or do I need a professional shop?

    Many exterior parts like mirror covers, mud flaps, and grille inserts can be installed with basic tools in 30-60 minutes. However, bumpers, hoods, and fenders typically require two people, proper lifting equipment, and alignment expertise. Bumper installations often need bracket adjustments and may require drilling new mounting holes. We provide installation instructions when available, but for major components, we recommend professional installation to ensure proper fit and maintain warranty coverage. Labor typically runs 2-4 hours for bumper swaps at most truck shops.

    Are aftermarket parts as durable as OEM Mack parts?

    Quality varies significantly among aftermarket manufacturers. Our premium aftermarket partners use similar gauge steel and manufacturing processes as OEM parts, often at 30-50% less cost. Look for parts with specified steel thickness (16-gauge or thicker for bumpers), proper drainage holes to prevent rust, and reinforced mounting points. While OEM parts guarantee exact fit, many of our aftermarket options meet or exceed OEM durability standards. Check product reviews and warranty terms - reputable aftermarket parts typically include 1-3 year warranties against defects.

    What should I know about DEF tank covers, battery box covers, and other specific Mack components?

    These truck-specific parts often have unique mounting systems that changed across model years. DEF tank covers for 2011-2015 Mack trucks use different brackets than 2016+ models. Battery box dimensions vary between daycab and sleeper configurations. When ordering electrical components like headlights or marker lights, verify voltage requirements (12V vs 24V systems). For air intake components, confirm whether you have a vertical or horizontal air cleaner setup. Including your OEM or calling with your truck's specifics helps ensure you receive the correct variation.


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