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Mack Trucks

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • Fender Washer Replaces 2701156

    Fender Washer Replaces 2701156

    AUTOMANN USA

    $2.26
    0.5 Inch ID X 1.75 Inch OD Fender WasherThis high-quality Fender Washer is built for heavy-duty performance, replacing 2701156. Flat hard end design, 1/2-inch inner diameter, 1-3/4-inch outer...
    29-1240007
    SKU:
    29-1240007
    Product Type:
    Hood Parts & Acc.
    Diameter Options:
    1 1/2 Inch
    Make:
    Universal Items
    $2.26
    Qty in Cart: 0
    Price:
    $2.26
    Subtotal:
  • 20 Inch 6 Spoke Wheel Replaces FA705K, FX196KX, FX705KX, 9660

    20 Inch 6 Spoke Wheel Replaces FA705K, FX196KX, FX705KX, 9660

    AFTERMARKET

    $780.99
    20 Inch Spoke Wheel W/ 6 Spokes, 12.750 Inch Mounting Bolt Hole Circle Diameter & 6- 0.75 Inch Bolt HolesGet dependable performance with this 20 Inch 6 Spoke Wheel. Featuring wheel bearing cups, rim...
    29-20100000
    SKU:
    29-20100000
    Product Type:
    Wheels
    Diameter Options:
    20 Inch
    Make:
    Universal Items
    $780.99
    Qty in Cart: 0
    Price:
    $780.99
    Subtotal:
  • Dosing Pump Urea Injection Replaces 2871879, 0444042132, 4387657 For Cummins & PACCAR Engines

    Dosing Pump Urea Injection Replaces 2871879, 0444042132, 4387657 For Cummins & PACCAR Engines

    AFTERMARKET

    $776.99
    5.5 X 8.09 Inch Dosing Pump Urea Injection- 10 PinEnsure precise DEF delivery with this high-quality Dosing Pump Urea Injection for Cummins and PACCAR engines. The 2.2 Type Supply Module features a...
    29-08060023
    SKU:
    29-08060023
    Product Type:
    Exhaust
    Height Options:
    5 Inch
    Make:
    Universal Items
    $776.99
    Qty in Cart: 0
    Price:
    $776.99
    Subtotal:
  • Ignition Switch Replaces P271048 For PACCAR Engines

    Ignition Switch Replaces P271048 For PACCAR Engines

    AFTERMARKET

    $52.99
    2.5 Inch Ignition Switch- 7 PinReplace your worn or faulty ignition with this precision PACCAR Ignition Switch. Complete with a lock cylinder, two keys, and a 7-pin connector, it measures 2.5 inches...
    29-15000004
    SKU:
    29-15000004
    Product Type:
    Interior
    Style Options:
    Paccar
    Make:
    Universal Items
    $52.99
    Qty in Cart: 0
    Price:
    $52.99
    Subtotal:
  • Actuator Dock Lock Replaces 1S4187, S29899, SSR1VA1031 For Hendrickson/ Turner Trailers

    Actuator Dock Lock Replaces 1S4187, S29899, SSR1VA1031 For Hendrickson/ Turner Trailers

    AUTOMANN USA

    $33.38
    Sleeve Type Actuator Dock Lock Fits Hendrickson/ Turner TrailersThis premium Actuator Dock Lock is designed for Hendrickson and Turner Trailers. Sleeve-type design with top and bottom plates...
    29-09500003
    SKU:
    29-09500003
    Height Options:
    10 1/2 Inch
    Product Type:
    Trailer
    Make:
    Universal Items
    Make:
    Trailer
    $33.38
    Qty in Cart: 0
    Price:
    $33.38
    Subtotal:
  • Oil Plug Replaces 9S-8008, 9S8008 For Caterpillar C7 Engines

    Oil Plug Replaces 9S-8008, 9S8008 For Caterpillar C7 Engines

    AUTOMANN USA

    $15.25
    1.253 X 0.771 Inch Oil Plug W/ 0.575 Inch A/F & 1-1/16 Inch - 12 ThreadEnsure your Caterpillar C7 engine remains protected with this precision Oil Plug. Featuring 0.575-inch A/F, 1.253-inch diameter,...
    29-07200011
    SKU:
    29-07200011
    Product Type:
    Engine Parts
    Style Options:
    Caterpillar
    Make:
    Universal Items
    $15.25
    Qty in Cart: 0
    Price:
    $15.25
    Subtotal:
  • Lock Washer Replaces SA16004, C70641B, 93600072, 355AX, T1705

    Lock Washer Replaces SA16004, C70641B, 93600072, 355AX, T1705

    AUTOMANN USA

    $0.34
    0.5 Inch Lock WasherMaintain optimal fastening with this durable Lock Washer, designed for SA16004, C70641B, 93600072, 355AX, and T1705. Medium-duty washer with 1/2-inch ID, 11/64-inch width, and...
    29-1240004
    SKU:
    29-1240004
    Product Type:
    Hood Parts & Acc.
    Diameter Options:
    1/2 Inch
    Make:
    Universal Items
    $0.34
    Qty in Cart: 0
    Price:
    $0.34
    Subtotal:
  • Cabin Air Spring Replaces 75314, SC29-O132, 7155, 7164, W023587155, W027037163, W027037164, W027037165, 1S4235, R816002, W027037153, 2019036

    Cabin Air Spring Replaces 75314, SC29-O132, 7155, 7164, W023587155, W027037163, W027037164, W027037165, 1S4235, R816002, W027037153, 2019036

    AFTERMARKET

    $57.99
    Sleeve Type Cabin Air Spring- Load At 80 PSI - 688 Lbs, Load At 100 PSI - 860 LbsImprove ride comfort and cab stability with this high-quality Cabin Air Spring. This sleeve-type air spring supports...
    29-10140001
    SKU:
    29-10140001
    Diameter Options:
    4 1/4 Inch
    Product Type:
    Exterior
    Height Options:
    8 1/2 Inch
    Make:
    Universal Items
    $57.99
    Qty in Cart: 0
    Price:
    $57.99
    Subtotal:
  • DPF Gasket Replaces 5304868, 5417859, 2188190PE For Cummins, PACCAR

    DPF Gasket Replaces 5304868, 5417859, 2188190PE For Cummins, PACCAR

    AFTERMARKET

    $36.34
    14.25 Inch ID X 15.375 Inch OD DPF GasketKeep your DPF system functioning efficiently with this high-quality gasket for Cummins and PACCAR engines. With a 14.250-inch ID, 15.375-inch OD, and 0...
    29-0809209
    SKU:
    29-0809209
    Product Type:
    Exhaust
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $36.34
    Qty in Cart: 0
    Price:
    $36.34
    Subtotal:
  • Oil Pump Replaces 3966840 For Cummins ISC 8.3L Engines

    Oil Pump Replaces 3966840 For Cummins ISC 8.3L Engines

    AFTERMARKET

    $140.99
    Cummins ISC 8.3L Engine Oil PumpThis premium Oil Pump for Cummins ISC 8.3L engines replaces part number 3966840 and is built for heavy-duty performance. Designed to maintain steady lubrication and...
    29-07200013
    SKU:
    29-07200013
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Make:
    Universal Items
    $140.99
    Qty in Cart: 0
    Price:
    $140.99
    Subtotal:
  • Oil Cooler Replaces 3957544, 3921558, 4713985AB, AP63467 For Cummins ISB 5.9L Engine

    Oil Cooler Replaces 3957544, 3921558, 4713985AB, AP63467 For Cummins ISB 5.9L Engine

    AFTERMARKET

    $164.99
    Oil Cooler W/ 7 PlatesThis high-performance Oil Cooler is the perfect replacement for Cummins ISB 5.9L engines. With 7 plated construction and fifteen precision-drilled holes-twelve at 0.340-inch and...
    29-07200005
    SKU:
    29-07200005
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Make:
    Universal Items
    $164.99
    Qty in Cart: 0
    Price:
    $164.99
    Subtotal:
  • 3.5 Inch Aluminized Steel Band Clamp Replaces A35AF, J000201

    3.5 Inch Aluminized Steel Band Clamp Replaces A35AF, J000201

    AUTOMANN USA

    $11.01
    3.5 Inch Aluminized Band ClampSecure your exhaust or piping system with this high-quality 3.5 Inch Aluminized Steel Band Clamp. Featuring pre-attached hardware and a Grade 8 M10 3/8-inch bolt, it...
    29-08000005
    SKU:
    29-08000005
    Diameter Options:
    3 1/2 Inch
    Product Type:
    Exhaust
    Width Options:
    1 1/4 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    $11.01
    Qty in Cart: 0
    Price:
    $11.01
    Subtotal:
  • EGR Pressure Differential Sensor Replaces 23531964 For Detroit Diesel 60 Series Engines

    EGR Pressure Differential Sensor Replaces 23531964 For Detroit Diesel 60 Series Engines

    AFTERMARKET

    $177.99
    EGR Pressure Differential Sensor- 3 PinMonitor exhaust gas pressure with confidence using this premium EGR Pressure Differential Sensor, replacement for Detroit Diesel 60 Series engines. Featuring 3...
    29-07100030
    SKU:
    29-07100030
    Product Type:
    Engine Parts
    Style Options:
    Detroit
    Make:
    Universal Items
    $177.99
    Qty in Cart: 0
    Price:
    $177.99
    Subtotal:
  • Oil Plug Replaces 9S-8004, 9S8004, 0995845 For Caterpillar C7 Engines

    Oil Plug Replaces 9S-8004, 9S8004, 0995845 For Caterpillar C7 Engines

    AUTOMANN USA

    $14.52
    0.684 X 0.500 Inch Oil Plug W/ 0.265 Inch A/F & 9/16 Inch - 18 ThreadMaintain your Caterpillar C7 engine with this premium Oil Plug. Its 0.265-inch A/F, 0.684-inch diameter, 0.500-inch length, and...
    29-07200010
    SKU:
    29-07200010
    Product Type:
    Engine Parts
    Style Options:
    Caterpillar
    Make:
    Universal Items
    $14.52
    Qty in Cart: 0
    Price:
    $14.52
    Subtotal:
  • Power Steering Reservoir Cover Replaces 3953866S, Q760236, Q760241, Q761939, NMCQ760236, 5839Q761939, Q761939FLG, FGQ761939

    Power Steering Reservoir Cover Replaces 3953866S, Q760236, Q760241, Q761939, NMCQ760236, 5839Q761939, Q761939FLG, FGQ761939

    AUTOMANN USA

    $24.17
    4.25 X 6.37 Inch Power Steering Reservoir CoverThis Power Steering Reservoir Cover is an essential replacement for maintaining smooth steering operation in your truck. It features exacting...
    29-07120013
    SKU:
    29-07120013
    Height Options:
    4 Inch
    Diameter Options:
    6 1/4 Inch
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $24.17
    Qty in Cart: 0
    Price:
    $24.17
    Subtotal:
  • Oil Plug Replaces 168-2288, 1682288 For Caterpillar C7 Engines

    Oil Plug Replaces 168-2288, 1682288 For Caterpillar C7 Engines

    AUTOMANN USA

    $15.24
    0.953 Inch Oil Plug W/ 1.122 Inch A/F & M18 x 1.5 ThreadReplace worn or damaged plugs with this premium Oil Plug for Caterpillar C7 engines. With a 1.122-inch A/F, 0.953-inch length, and M18 x 1.5...
    29-07200009
    SKU:
    29-07200009
    Product Type:
    Engine Parts
    Style Options:
    Caterpillar
    Make:
    Universal Items
    $15.24
    Qty in Cart: 0
    Price:
    $15.24
    Subtotal:
  • EGR Pressure Differential Sensor Replaces P4050-5207-1, P405052071, ME555560 For Mitsubishi, Detroit Diesel

    EGR Pressure Differential Sensor Replaces P4050-5207-1, P405052071, ME555560 For Mitsubishi, Detroit Diesel

    AFTERMARKET

    $91.99
    2.78 Inch EGR Pressure Differential Sensor- 3 PinReliable performance and accurate EGR readings are ensured with this high-quality EGR Pressure Differential Sensor, replacement for Mitsubishi and...
    29-07100032
    SKU:
    29-07100032
    Style Options:
    Detroit
    Product Type:
    Engine Parts
    Length Options:
    2 3/4 Inch
    Make:
    Universal Items
    $91.99
    Qty in Cart: 0
    Price:
    $91.99
    Subtotal:
  • Power Steering Reservoir Cover Clamp Replaces NMCQ186425, Q186425

    Power Steering Reservoir Cover Clamp Replaces NMCQ186425, Q186425

    AUTOMANN USA

    $15.26
    5.75 Inch To 7.0 Inch ID Power Steering Reservoir Cover ClampReplace worn or damaged clamps with this durable Power Steering Reservoir Cover Clamp. Its adjustable 5.75 to 7.0-inch inner diameter and...
    29-07120015
    SKU:
    29-07120015
    Width Options:
    1/2 Inch
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $15.26
    Qty in Cart: 0
    Price:
    $15.26
    Subtotal:
  • Belt Tensioner Assembly Replaces 1971873PE, 2143061PE, 2140648PE For PACCAR MX Engines

    Belt Tensioner Assembly Replaces 1971873PE, 2143061PE, 2140648PE For PACCAR MX Engines

    AUTOMANN USA

    $277.99
    2.952 X 1.84 Inch Belt Tensioner AssemblyOptimize your PACCAR MX engine performance with this high-quality Belt Tensioner Assembly. Featuring a pulley 1.840 inches wide and 2.952 inches in outer...
    29-07060177
    SKU:
    29-07060177
    Diameter Options:
    3 Inch
    Width Options:
    1 3/4 Inch
    Style Options:
    Paccar
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $277.99
    Qty in Cart: 0
    Price:
    $277.99
    Subtotal:
  • Stainless Steel EGR Cooler Hardware Kit Replaces 20431718

    Stainless Steel EGR Cooler Hardware Kit Replaces 20431718

    AUTOMANN USA

    $688.99
    EGR Cooler Hardware KitReplace worn components with this stainless steel EGR Cooler Hardware Kit, engineered to replace 20431718. With two EGR pipes, five V-band clamps, gaskets, and full hardware,...
    29-07110008
    SKU:
    29-07110008
    Product Type:
    Engine Parts
    Material Options:
    Stainless Steel
    Style Options:
    Detroit
    Make:
    Universal Items
    $688.99
    Qty in Cart: 0
    Price:
    $688.99
    Subtotal:
  • Total: items /

Adding your products to cart

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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