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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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  • BESTfit Cummins Temperature Sensor For Cummins Replaces 2511404C1, 5461614, A040P174

    BESTfit Cummins Temperature Sensor For Cummins Replaces 2511404C1, 5461614, A040P174

    BESTFIT TRUCK PARTS

    $281.99
    Temperature Sensor By BESTfit Replaces 2511404C1, 5461614, A040P174 Fits CumminsThe BESTfit Cummins Temperature Sensor is a premium replacement for OEM part numbers 2511404C1, 5461614, and A040P174,...
    29-07100079
    SKU:
    29-07100079
    Style Options:
    Cummins
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $281.99
    Qty in Cart: 0
    Price:
    $281.99
    Subtotal:
  • BESTfit Magnet Repair Kit

    BESTfit Magnet Repair Kit

    BESTFIT TRUCK PARTS

    $690.99
    Magnet Repair Kit By BESTfitUpgrade your cooling system maintenance with the BESTfit Magnet Repair Kit, designed specifically for Horton fan clutch systems using electromagnetic activation. This...
    29-07060197
    SKU:
    29-07060197
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $690.99
    Qty in Cart: 0
    Price:
    $690.99
    Subtotal:
  • BESTfit Cummins EGT Temperature Sensor For Cummins ISB 6.7L 2011 Replaces 1906310, 1906310PE, 2129818

    BESTfit Cummins EGT Temperature Sensor For Cummins ISB 6.7L 2011 Replaces 1906310, 1906310PE, 2129818

    BESTFIT TRUCK PARTS

    $355.99
    Cummins EGT Temperature Sensor By BESTfit Replaces 1906310, 1906310PE, 2129818 Fits Cummins ISB 6.7L 2011The BESTfit Cummins EGT Temperature Sensor is a premium replacement for OEM part numbers...
    29-07100078
    SKU:
    29-07100078
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Make:
    Universal Items
    $355.99
    Qty in Cart: 0
    Price:
    $355.99
    Subtotal:
  • BESTfit Cummins Temperature Sensor For Cummins Replaces 2120750005, 2872467, 5EL026

    BESTfit Cummins Temperature Sensor For Cummins Replaces 2120750005, 2872467, 5EL026

    BESTFIT TRUCK PARTS

    $118.34
    Temperature Sensor By BESTfit Replaces 2120750005, 2872467, 5EL026 Fits CumminsUpgrade your engine monitoring system with the BESTfit Cummins Temperature Sensor, a direct replacement for OEM part...
    29-07100081
    SKU:
    29-07100081
    Style Options:
    Cummins
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $118.34
    Qty in Cart: 0
    Price:
    $118.34
    Subtotal:
  • BESTfit Cummins Sensor For Cummins Replaces 0451231, 10021005, 2120752007

    BESTfit Cummins Sensor For Cummins Replaces 0451231, 10021005, 2120752007

    BESTFIT TRUCK PARTS

    $106.99
    Sensor By BESTfit Replaces 0451231, 10021005, 2120752007 Fits CumminsThe BESTfit Cummins Sensor is a high-quality engine sensor solution compatible with OEM part numbers 0451231, 10021005, and...
    29-07100075
    SKU:
    29-07100075
    Style Options:
    Cummins
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $106.99
    Qty in Cart: 0
    Price:
    $106.99
    Subtotal:
  • BESTfit Super Repair Kit Replaces 109881, 1651839C91, 601158, 9500HP

    BESTfit Super Repair Kit Replaces 109881, 1651839C91, 601158, 9500HP

    BESTFIT TRUCK PARTS

    $691.99
    Super Repair Kit For Air Operated Fan Clutch By BESTfit Replaces 109881, 1651839C91, 601158, 9500HPUpgrade your cooling system with the BESTfit Super Repair Kit, a direct replacement for OEM part...
    29-07060193
    SKU:
    29-07060193
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $691.99
    Qty in Cart: 0
    Price:
    $691.99
    Subtotal:
  • BESTfit Cummins Temperature Sensor For Cummins Replaces 2120752035, 2872261, 2872261RX

    BESTfit Cummins Temperature Sensor For Cummins Replaces 2120752035, 2872261, 2872261RX

    BESTFIT TRUCK PARTS

    $162.99
    Temperature Sensor By BESTfit Replaces 2120752035, 2872261, 2872261RX Fits CumminsUpgrade your engine monitoring system with the BESTfit Cummins Temperature Sensor, a direct replacement for OEM part...
    29-07100077
    SKU:
    29-07100077
    Style Options:
    Cummins
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $162.99
    Qty in Cart: 0
    Price:
    $162.99
    Subtotal:
  • BESTfit Air Operated Fan Clutch 5 Inch Pilot Replaces 10900975001, 10900975001B, 10900990001

    BESTfit Air Operated Fan Clutch 5 Inch Pilot Replaces 10900975001, 10900975001B, 10900990001

    BESTFIT TRUCK PARTS

    $792.99
    5 Inch Pilot Air Operated Fan Clutch By BESTfit Replaces 10900975001, 10900975001B, 10900990001The BESTfit Air Operated Fan Clutch 5" Pilot is a high-quality replacement solution for OEM part numbers...
    29-07060203
    SKU:
    29-07060203
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $792.99
    Qty in Cart: 0
    Price:
    $792.99
    Subtotal:
  • BESTfit Quick Super Repair Kit Replaces 14256, 166627, 198472, 994900

    BESTfit Quick Super Repair Kit Replaces 14256, 166627, 198472, 994900

    BESTFIT TRUCK PARTS

    $892.99
    Quick Super Repair Kit DriveMaster Advantage By BESTfit Replaces 14256, 166627, 198472, 994900Upgrade your cooling system maintenance with the BESTfit Quick Super Repair Kit, a direct replacement for...
    29-07060200
    SKU:
    29-07060200
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $892.99
    Qty in Cart: 0
    Price:
    $892.99
    Subtotal:
  • BESTfit Power Take-Off 6 Bolt W/O Install Kit Replaces 660GSAHXV3XD

    BESTfit Power Take-Off 6 Bolt W/O Install Kit Replaces 660GSAHXV3XD

    BESTFIT TRUCK PARTS

    $2,094.99
    6 Bolt Power Take-Off W/O Install Kit By BESTfit Replaces 660GSAHXV3XDBuilt for strength and reliability, the BESTfit 6 Bolt PTO Without Install Kit replaces OEM reference 660GSAHXV3XD for Chelsea...
    29-07050122
    SKU:
    29-07050122
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $2,094.99
    Qty in Cart: 0
    Price:
    $2,094.99
    Subtotal:
  • BESTfit Polar Extreme Super Repair Kit Replaces 1311840103, 142561, 994902

    BESTfit Polar Extreme Super Repair Kit Replaces 1311840103, 142561, 994902

    BESTFIT TRUCK PARTS

    $947.99
    Polar Extreme Super Repair Kit DriveMaster By BESTfit Replaces 1311840103, 142561, 994902Upgrade your cooling system maintenance with the BESTfit Polar Extreme Super Repair Kit, a direct replacement...
    29-07060202
    SKU:
    29-07060202
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $947.99
    Qty in Cart: 0
    Price:
    $947.99
    Subtotal:
  • BESTfit Viscous Air Sensing Fan Clutch, Replaces 1301840211, 179691 For Freightliner & Sterling

    BESTfit Viscous Air Sensing Fan Clutch, Replaces 1301840211, 179691 For Freightliner & Sterling

    BESTFIT TRUCK PARTS

    $535.99
    Viscous Air Sensing Fan Clutch By BESTfit Replaces 1301840211, 179691 Fits Freightliner & SterlingUpgrade your cooling system with the BESTfit Viscous Air Sensing Fan Clutch for Freightliner and...
    29-07060196
    SKU:
    29-07060196
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $535.99
    Qty in Cart: 0
    Price:
    $535.99
    Subtotal:
  • BESTfit Power Take-Off 8 Bolt No Assembly Shift Replaces 489XRAHXH3XK

    BESTfit Power Take-Off 8 Bolt No Assembly Shift Replaces 489XRAHXH3XK

    BESTFIT TRUCK PARTS

    $1,120.99
    8 Bolt No Assembly Shift Power Take-Off By BESTfit Replaces 489XRAHXH3XKBuilt for strength and precision, the BESTfit 8 Bolt No Assembly Shift Power Take-Off replaces OEM reference 489XRAHXH3XK for...
    29-07050118
    SKU:
    29-07050118
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $1,120.99
    Qty in Cart: 0
    Price:
    $1,120.99
    Subtotal:
  • BESTfit Solenoid Valve 12 Volt

    BESTfit Solenoid Valve 12 Volt

    BESTFIT TRUCK PARTS

    $107.99
    12V Solenoid Valve By BESTfitUpgrade your cooling system with the BESTfit 12 Volt Solenoid Valve, engineered for Horton air-operated fan clutch systems requiring dependable airflow control. This...
    29-07060198
    SKU:
    29-07060198
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $107.99
    Qty in Cart: 0
    Price:
    $107.99
    Subtotal:
  • BESTfit Air Operated Fan Clutch Replaces 10900960001, 10900965001B, 20955539

    BESTfit Air Operated Fan Clutch Replaces 10900960001, 10900965001B, 20955539

    BESTFIT TRUCK PARTS

    $630.99
    Air Operated Fan Clutch By BESTfit Replaces 10900960001, 10900965001B, 20955539Upgrade your cooling system with the BESTfit Air Operated Fan Clutch, a direct replacement for OEM part numbers...
    29-07060192
    SKU:
    29-07060192
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $630.99
    Qty in Cart: 0
    Price:
    $630.99
    Subtotal:
  • BESTfit Power Take-Off 6 Bolt W/ Rotatable Output Flange Replaces 271GBHVPB5RA, 271GBHVPB5RB, 271GBHVPB5XK

    BESTfit Power Take-Off 6 Bolt W/ Rotatable Output Flange Replaces 271GBHVPB5RA, 271GBHVPB5RB, 271GBHVPB5XK

    BESTFIT TRUCK PARTS

    $3,364.99
    6 Bolt W/ Rotatable Output Power Take-Off By BESTfit Replaces 271GBHVPB5RA, 271GBHVPB5RB, 271GBHVPB5XKBuilt for strength and reliability, the BESTfit 6 Bolt PTO with Rotatable Output Flange replaces...
    29-07050114
    SKU:
    29-07050114
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $3,364.99
    Qty in Cart: 0
    Price:
    $3,364.99
    Subtotal:
  • BESTfit Power Take-Off 10 Bolt 12V Electric Over Hydraulic Replaces 180274HDL, 890CAFJWB3XY

    BESTfit Power Take-Off 10 Bolt 12V Electric Over Hydraulic Replaces 180274HDL, 890CAFJWB3XY

    BESTFIT TRUCK PARTS

    $6,161.99
    10 Bolt 12V Electric Over Hydraulic Power Take-Off By BESTfit Replaces 180274HDL, 890CAFJWB3XYUpgrade your PTO system with the BESTfit 10 Bolt 12V Electric Over Hydraulic Power Take-Off, a direct...
    29-07050124
    SKU:
    29-07050124
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $6,161.99
    Qty in Cart: 0
    Price:
    $6,161.99
    Subtotal:
  • BESTfit Power Take-Off 6 Bolt, 3 Assembly Arrangement Replaces 660GSAHXA3XD

    BESTfit Power Take-Off 6 Bolt, 3 Assembly Arrangement Replaces 660GSAHXA3XD

    BESTFIT TRUCK PARTS

    $2,227.99
    6 Bolt, 3 Assembly Arrangement Power Take-Off By BESTfit Replaces 660GSAHXA3XDBuilt for strength and reliability, the BESTfit 6 Bolt 3 Assembly Power Take-Off replaces OEM reference 660GSAHXA3XD for...
    29-07050121
    SKU:
    29-07050121
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $2,227.99
    Qty in Cart: 0
    Price:
    $2,227.99
    Subtotal:
  • BESTfit Stud Kit For 272X, E Standard, And Eaton Brazil

    BESTfit Stud Kit For 272X, E Standard, And Eaton Brazil

    BESTFIT TRUCK PARTS

    $199.99
    Turbocharger Stud Kit By BESTfit Fits 272X, E Standard, And Eaton BrazilUpgrade your PTO installation with the BESTfit Stud Kit for 272X, E Standard, and Eaton Brazil systems, engineered for Chelsea...
    29-07050110
    SKU:
    29-07050110
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $199.99
    Qty in Cart: 0
    Price:
    $199.99
    Subtotal:
  • BESTfit Power Take-Off Mounting Kit, Series 267-277-859

    BESTfit Power Take-Off Mounting Kit, Series 267-277-859

    BESTFIT TRUCK PARTS

    $116.99
    Series 267-277-859 Mounting Kit By BESTfitUpgrade your PTO installation with the BESTfit Mounting Kit for Series 267-277-859, engineered for strength, precision, and long-term reliability. This PTO...
    29-07050123
    SKU:
    29-07050123
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $116.99
    Qty in Cart: 0
    Price:
    $116.99
    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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