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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
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  • Price
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  • Knoedler Black Synthetic Leather Mid Back Air Chief Low Rider Seat W/ Arms

    Knoedler Black Synthetic Leather Mid Back Air Chief Low Rider Seat W/ Arms

    KNOEDLER

    $2,213.99
    Black Synthetic Leather Mid Back Air Chief Low Rider Seat W/ Arms* High Quality Mechanical Seat* Standard Suspension* Air Chief Model* Extreme Low Rider (Mid Back With Headrest)* FAS System (4X...
    98SCL62MB0S01
    SKU:
    98SCL62MB0S01
    Product Type:
    Seats
    Height Options:
    44 Inch
    Width Options:
    28 Inch
    Material Options:
    Synthetic Leather
    Color:
    Black
    Style Options:
    Mid Back
    Make:
    Universal Items
    $2,213.99
    Qty in Cart: 0
    Price:
    $2,213.99
    Subtotal:
  • 5.75 Inch Stainless Steel Headlight Visor

    5.75 Inch Stainless Steel Headlight Visor

    UNITED PACIFIC

    $4.98
    304 Stainless Steel Headlight Visor- 5.75 Inch* High Quality Headlight Visor* Polished 304 Stainless Steel* 5-3/4 Inch Diameter* Sold Individually* Warranty On Headlight Visors Against Defects In...
    29-160600418
    SKU:
    29-160600418
    Finish Options:
    Polished
    Product Type:
    Lighting
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Diameter Options:
    5 3/4 Inch
    Ready To Ship:
    Yes
    $4.98
    Qty in Cart: 0
    Price:
    $4.98
    Subtotal:
  • Knoedler Black Synthetic Leather Mid Back Air Chief Low Rider Seat W/ Headrest, Arms & Bellow

    Knoedler Black Synthetic Leather Mid Back Air Chief Low Rider Seat W/ Headrest, Arms & Bellow

    KNOEDLER

    $1,639.99
    Black Synthetic Leather Mid Back Air Chief Low Rider Seat W/ Headrest, Arms & BellowImprove driver comfort and cabin ergonomics with the Knoedler Black Synthetic Leather Mid Back Air Chief Low Rider...
    98LRL82MH0S01BRH
    SKU:
    98LRL82MH0S01BRH
    Color:
    Black
    Material Options:
    Synthetic Leather
    Product Type:
    Seats
    Make:
    Universal Items
    Style Options:
    Mid Back
    $1,639.99
    Qty in Cart: 0
    Price:
    $1,639.99
    Subtotal:
  • FAS Lumbar 3 Switch Air Valve For Knoedler Seats

    FAS Lumbar 3 Switch Air Valve For Knoedler Seats

    KNOEDLER

    $124.99
    FAS Lumbar 3 Switch Air Valve* High Quality Air Valve* FAS Lumbar 3 Switch* For Knoedler Seats* Sold Individually* Warranty On Air Valves Against Defects In Workmanship & Material From Date Of...
    730071000
    SKU:
    730071000
    Product Type:
    Seats
    Make:
    Universal Items
    $124.99
    Qty in Cart: 0
    Price:
    $124.99
    Subtotal:
  • Stainless Steel Oil Fill Tube For CAT C15 Engines

    Stainless Steel Oil Fill Tube For CAT C15 Engines

    SH TUBE

    $166.99
    Oil Fill Tube For CAT C15 Engines* High Quality Cat Oil Fill Tube* Larger Than Factory Size* Fits Most C15 Engines* Stainless Steel* Sold Individually* Warranty On Cat Oil Fill Tubes Against Defects...
    29-07200025
    SKU:
    29-07200025
    Product Type:
    Engine Parts
    Style Options:
    Caterpillar
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    $166.99
    Qty in Cart: 0
    Price:
    $166.99
    Subtotal:
  • Power Steering Pump For Cummins ISX/13.2K Engines Replaces PS251615R103

    Power Steering Pump For Cummins ISX/13.2K Engines Replaces PS251615R103

    AFTERMARKET

    $570.99
    PS Type Power Steering Pump For Cummins ISX EnginesKeep your Cummins ISX/13.2K truck steering smooth and reliable with this TRW-PS Type Power Steering Pump. Delivering 25 CC displacement, 4.23 GPM...
    29-07120044
    SKU:
    29-07120044
    Style Options:
    Cummins
    Product Type:
    Engine Parts
    Material Options:
    Aluminum
    Make:
    Universal Items
    $570.99
    Qty in Cart: 0
    Price:
    $570.99
    Subtotal:
  • Power Steering Pump Replaces PS221613L103

    Power Steering Pump Replaces PS221613L103

    AFTERMARKET

    $424.99
    LUK Type Power Steering Pump- Left Hand Rotation* High Quality Power Steering Pump* LUK Type* 22 CC Displacement* 4.23 GPM* 1885 PSI* LH CCW Rotation* 11 Tooth Gear* (1) 1/16 - 12 UN-2B Inlet Port...
    29-0731001
    SKU:
    29-0731001
    Product Type:
    Engine Parts
    Material Options:
    Aluminum
    Make:
    Universal Items
    $424.99
    Qty in Cart: 0
    Price:
    $424.99
    Subtotal:
  • Power Steering Pump For Caterpillar 3126 & 3116, 13.2K & 14.6K Engines

    Power Steering Pump For Caterpillar 3126 & 3116, 13.2K & 14.6K Engines

    AFTERMARKET

    $570.99
    PS Type Power Steering Pump Replaces PS251615L113Maximize steering efficiency on Caterpillar 3126 and 3116 engines with the TRW-PS Power Steering Pump, designed for 13.2K and 14.6K engine models...
    29-07120045
    SKU:
    29-07120045
    Product Type:
    Engine Parts
    Material Options:
    Aluminum
    Make:
    Universal Items
    $570.99
    Qty in Cart: 0
    Price:
    $570.99
    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:
  • Power Steering Pump Replaces PS2216-15R102

    Power Steering Pump Replaces PS2216-15R102

    AFTERMARKET

    $462.99
    PS Type Power Steering Pump Replaces PS2216-15R102Restore reliable steering control in your truck with this TRW-PS Type Power Steering Pump, built to replace PS2216-15R102. Featuring 22 CC...
    29-07120036
    SKU:
    29-07120036
    Product Type:
    Engine Parts
    Material Options:
    Aluminum
    Make:
    Universal Items
    $462.99
    Qty in Cart: 0
    Price:
    $462.99
    Subtotal:
  • Power Steering Pump Replaces PS282815L116

    Power Steering Pump Replaces PS282815L116

    AFTERMARKET

    $508.99
    PS Type Power Steering Pump Replaces PS282815L116Take control of your Freightliner truck's steering with this TRW-PS Type Power Steering Pump, designed to replace PS282815L116. With 28 CC...
    29-07120041
    SKU:
    29-07120041
    Material Options:
    Aluminum
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $508.99
    Qty in Cart: 0
    Price:
    $508.99
    Subtotal:
  • Power Steering Pump For Mack

    Power Steering Pump For Mack

    AFTERMARKET

    $363.99
    EV Type Steering Pump- Right Hand RotationEnsure long-lasting steering performance in your Mack truck with this TRW-EV Type Power Steering Pump. With 18 CC displacement, 4.23 GPM flow, and 2030 PSI...
    29-07120043
    SKU:
    29-07120043
    Material Options:
    Aluminum
    Product Type:
    Engine Parts
    Make:
    Mack
    Ready To Ship:
    Yes
    $363.99
    Qty in Cart: 0
    Price:
    $363.99
    Subtotal:
  • Power Steering Pump Replaces EV221609L101, EV221609L10101, 137114

    Power Steering Pump Replaces EV221609L101, EV221609L10101, 137114

    AFTERMARKET

    $458.99
    EV Type Power Steering PumpReplaces EV221609L101, EV221609L10101, 137114Keep your truck's steering system operating at peak performance with this TRW-EV Type Power Steering Pump. Replacing...
    29-07120037
    SKU:
    29-07120037
    Material Options:
    Aluminum
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $458.99
    Qty in Cart: 0
    Price:
    $458.99
    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:
  • Power Steering Pump Replaces RP221615A. RP221615AX. PS251615R114

    Power Steering Pump Replaces RP221615A. RP221615AX. PS251615R114

    AFTERMARKET

    $479.99
    Power Steering Pump- PS Type* High Quality Power Steering Pump* TRW-PS Type* 25 CC Displacement* 4.23 GPM* 2175 PSI* RH CW Rotation* 11 Tooth* 18 Degree Offset* (1) 1/16 - 12 UN-2B Inlet Port (Right...
    29-07120027
    SKU:
    29-07120027
    Product Type:
    Engine Parts
    Material Options:
    Aluminum
    Make:
    Universal Items
    $479.99
    Qty in Cart: 0
    Price:
    $479.99
    Subtotal:
  • Power Steering Pump- PS Type Replaces RP221601. RP221601X. PS221615R103

    Power Steering Pump- PS Type Replaces RP221601. RP221601X. PS221615R103

    AFTERMARKET

    $479.99
    PS Type Power Steering PumpMaintain full steering control with this TRW-PS Type Power Steering Pump, engineered for trucks needing RP221601, RP221601X, or PS221615R103 replacements. With 22 CC...
    29-07120029
    SKU:
    29-07120029
    Material Options:
    Aluminum
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $479.99
    Qty in Cart: 0
    Price:
    $479.99
    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:
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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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