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Freightliner M2 Business Class Parts

The Freightliner M2 Business Class semi-truck is a solid medium-duty truck that offers the versatility and reliability you'd expect from Freightliner, but we can make you stand out even more by customizing your semi truck with quality parts and chrome accessories from 4 State Trucks. When you drive an M2 Business Class, you'll enjoy top-notch features like maneuverability, roomy interior, and great driver visibility that make it fun and easy to keep your truck on the road. Whether you need bumpers, exhaust, fuel tanks, or any other aftermarket or custom parts for your M2, 4 State Trucks has got you covered - shop our selection of Freightliner parts today.
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  • Price
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  • 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:
  • V-Band Clamp Kit Replaces 2871862

    V-Band Clamp Kit Replaces 2871862

    AUTOMANN USA

    $93.99
    Stainless Steel V-Band Clamp Kit W/ 13.375 Inch Nominal Diameter V- ClampThis high-performance V-Band Clamp Kit is engineered for Kenworth, Peterbilt, Freightliner, International, and Western Star...
    29-0809210
    SKU:
    29-0809210
    Material Options:
    Stainless Steel
    Product Type:
    Exhaust
    Make:
    Peterbilt
    Make:
    International
    Make:
    Kenworth
    Make:
    Freightliner
    Make:
    Western Star
    $93.99
    Qty in Cart: 0
    Price:
    $93.99
    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:
  • 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:
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Adding your products to cart

When your Freightliner M2 Business Class is your daily workhorse, you need parts that can keep up. Whether you're hauling, delivering, or running job to job, our aftermarket parts and accessories help your rig stay sharp, strong, and road-ready.

Aftermarket Freightliner M2 Business Accessories

Our aftermarket semi truck parts are reliable, high-quality components—from front bumpers and grilles to lights, mirrors, exhausts, and more. Need engine parts to keep your powertrain smooth? Or custom touches to make your truck stand out? We’ve got it all.

Why Upgrade Your Semi Truck Parts?

- Built for performance: Get durable parts that stand up to heavy-duty jobs. - Boost your style: Chrome accents, lighting upgrades, and custom add-ons. - Fit you can trust: Designed to match the M2’s exact specs for a smooth install. - Versatile options: Perfect for owner-operators, fleets, and vocational trucks.
Whether you’re replacing worn components or tricking out your cab, the right parts make all the difference. Keep your Freightliner M2 Business Class looking great and running strong—mile after mile.

Frequently Asked Questions About Freightliner M2 Business Class Parts

What years and models of Freightliner M2 Business Class trucks do your parts fit?

Our parts are designed to fit Freightliner M2 Business Class trucks from 2003 to present. However, compatibility can vary by specific part type. For bumpers and body panels, there are typically three main design generations: 2003-2007, 2008-2017, and 2018-present. Always check the product description for exact year ranges, or contact our team with your OEM number to ensure proper fitment. Some parts may also fit the M2 106 and M2 112 variants, but verify compatibility before ordering.

Are aftermarket bumpers as durable as OEM parts, and what materials are they made from?

Quality aftermarket bumpers for the M2 Business Class are typically constructed from either heavy-duty steel (16-gauge or thicker) or high-impact ABS plastic, depending on the application. Steel bumpers often feature chrome plating or powder coating for corrosion resistance. While OEM parts meet factory specifications, many aftermarket options actually exceed OEM durability standards, especially those designed for vocational use. Look for bumpers with reinforced mounting brackets and proper drainage holes to prevent rust. We clearly specify material thickness and coating type in each product listing.

What are the most common installation challenges when replacing M2 Business Class bumpers?

The most frequent installation issues include: alignment with existing mounting holes (especially on 2008+ models where hole patterns changed), proper fitment around fog lights and sensors, and weight management during installation (steel bumpers can weigh 80-150 pounds). Many customers report needing to slightly enlarge mounting holes or use washers for proper alignment. We recommend having a second person assist with installation and using a floor jack to support the bumper during mounting. Installation typically takes 2-3 hours with basic tools, though vehicles with air dam systems or integrated step plates may require additional time.

What finish options are available, and which holds up best for different applications?

Common finishes include chrome-plated steel, polished stainless steel, painted steel, and textured plastic. For highway applications, chrome provides the classic look but requires regular maintenance to prevent pitting. Polished stainless steel costs more initially but resists corrosion better in salt-heavy regions. For vocational trucks in construction or waste management, painted steel bumpers with textured powder coating offer the best impact resistance and easy touch-up capability. Plastic bumpers work well for urban delivery trucks where weight savings and minor impact absorption are priorities.

Do I need to order additional hardware or brackets when buying a replacement bumper?

Most replacement bumpers come with new mounting brackets, but rarely include bolts, nuts, or washers. Plan to purchase Grade 8 hardware separately - typically you'll need 8-12 bolts (usually 1/2" or 5/8" diameter) with corresponding lock washers and nuts. Some installations may require bumper-to-frame adapter brackets if switching between bumper styles or upgrading from plastic to steel. Fog light brackets, license plate holders, and step plates are usually sold separately. Check if your existing hardware is reusable, but having new hardware on hand prevents installation delays.


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