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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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  • FREE SHIPPING OVER $249
    MV3 Type Dash Valve Control Module W/ 5 - 3/8 Inch PLC Ports Replaces 21315044, 21750583

    MV3 Type Dash Valve Control Module W/ 5 - 3/8 Inch PLC Ports Replaces 21315044, 21750583

    AFTERMARKET

    $209.99
    MV3 Type Dash Valve Control Module W/ 3.5 X 4.2 Inch C To C* High Quality Dash Valve* MV3 Type Dash Control Module* (5) 3/8 Inch PLC Ports* Dimensions:  - 3.5 Inch Center To Center Width  - 4.2 Inch...
    09-05170491
    SKU:
    09-05170491
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $209.99
    Qty in Cart: 0
    Price:
    $209.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Dash Valve MV3 Type Dash Control Module W/ Integral Push-Lock-Connect Fittings Replaces 170.802122, 170.802122WF

    Dash Valve MV3 Type Dash Control Module W/ Integral Push-Lock-Connect Fittings Replaces 170.802122, 170.802122WF

    AFTERMARKET

    $123.99
    Dash Valve W/ 4 - 3/8 Inch PLC Ports & 1/2 Inch PLC Exhaust Port* High Quality Dash Valve* MV3 Type Dash Control Module With Integral Push-Lock-Connect Fittings* Auxiliary Port Not Existent* Trailer...
    09-05170482
    SKU:
    09-05170482
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $123.99
    Qty in Cart: 0
    Price:
    $123.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Air Dryer Cartridge W/ New Style End Cover 7 Exterior Purge Valve Housing Replaces 170.800202, 5002063

    Air Dryer Cartridge W/ New Style End Cover 7 Exterior Purge Valve Housing Replaces 170.800202, 5002063

    AFTERMARKET

    $219.99
    Air Dryer Cartridge W/ 1/2 Inch NPT Delivery/Supply Ports & 1/4 Inch NPT Control Port* High Quality Air Dryer Cartridge* Complete AD9 Type Air Dryer Assembly* New Style End Cover With Additional Port...
    09-05170476
    SKU:
    09-05170476
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $219.99
    Qty in Cart: 0
    Price:
    $219.99
    Subtotal:
  • FREE SHIPPING OVER $249
    RG2 Type Relay Valve W/ .35 Inch Diameter Mounting Bracket Holes 1.5 Inch C To C Replaces 170.KN28500

    RG2 Type Relay Valve W/ .35 Inch Diameter Mounting Bracket Holes 1.5 Inch C To C Replaces 170.KN28500

    AFTERMARKET

    $38.99
    RG2 Type Relay Valve 5.6 PSI Crack Pressure W/ Control, Reservoir & Deliver NPT Ports* High Quality Relay Valve* RG2 Type Relay Valve* 5.6 PSI Crack Pressure* (2) 0.35 Inch Diameter Mounting Bracket...
    09-05170487
    SKU:
    09-05170487
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $38.99
    Qty in Cart: 0
    Price:
    $38.99
    Subtotal:
  • FREE SHIPPING OVER $249
    D2 Type Governor W/ 105 PSI Cut-In & 125 PSI Cut-Out Replaces 170.284358

    D2 Type Governor W/ 105 PSI Cut-In & 125 PSI Cut-Out Replaces 170.284358

    AFTERMARKET

    $19.99
    D2 Type Governor W/ Gasket, 4 Plugs & High Temp O-Rings* High Quality Governor* D2 Type* 105 PSI Cut-In* 125 PSI Cut-Out* Adjustable* Includes:  - (1) Governor  - (1) Gasket  - (4) Plugs  - High Temp...
    09-05170478
    SKU:
    09-05170478
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $19.99
    Qty in Cart: 0
    Price:
    $19.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Purge Valve Kit W/ Soft Seat Replaces 170.K031560, BER-K031560 For ADIS EverFlow Type And ADIP Drop-In Type Air Dryers

    Purge Valve Kit W/ Soft Seat Replaces 170.K031560, BER-K031560 For ADIS EverFlow Type And ADIP Drop-In Type Air Dryers

    AFTERMARKET

    $79.99
    Purge Valve Kit W/ Soft Seat Fits ADIS EverFlow Type And ADIP Drop-In Type Air Dryers Replaces 170.K031560, BER-K031560* High Quality Purge Valve Kit* Replacement Purge Valve For ADIP And ADIS...
    09-05170477
    SKU:
    09-05170477
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $79.99
    Qty in Cart: 0
    Price:
    $79.99
    Subtotal:
  • FREE SHIPPING
    Air Dryer Cartridge Coalescing ADIS Type W/ 1/2 Inch 14 NPT Supply/Inlet Port Replaces 170.5010134PG

    Air Dryer Cartridge Coalescing ADIS Type W/ 1/2 Inch 14 NPT Supply/Inlet Port Replaces 170.5010134PG

    AFTERMARKET

    $339.99
    Air Dryer Cartridge W/ Opening Pressure 106 PSI* High Quality Air Dryer Cartridge* Complete Coalescing ADIS Type Air Dryer Assembly* Cartridge Type* 12V-90W* Primary Port 1/4 Inch NPT Opening...
    09-05170472
    SKU:
    09-05170472
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $339.99
    Qty in Cart: 0
    Price:
    $339.99
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  • FREE SHIPPING OVER $249
    R12 Type Pilot Relay Valve Replaces 170.065476

    R12 Type Pilot Relay Valve Replaces 170.065476

    AFTERMARKET

    $67.99
    R12 Type Pilot Relay Valve W/ 1 - 1/4 NPT Control Port, 2 - 1/2 Inch NPT Supply Ports & 4 - 3/8 Inch NPT Delivery Ports* High Quality Relay Valve* R12 Type Pilot Relay Valve* Ports:  - (1) 1/4 Inch...
    09-05170483
    SKU:
    09-05170483
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $67.99
    Qty in Cart: 0
    Price:
    $67.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Air Dryer Cartridge 5.35 X 9.68 Inch W/ Cartridge & O-Ring Replaces 170.950069, 432421922 For Wabco SS1800 Type Air Dryers

    Air Dryer Cartridge 5.35 X 9.68 Inch W/ Cartridge & O-Ring Replaces 170.950069, 432421922 For Wabco SS1800 Type Air Dryers

    AFTERMARKET

    $104.99
    Air Dryer Cartridge M39 1.5 Thread Fits Wabco SS1800 Type Air Dryers Replaces 170.950069, 432421922* High Quality Air Dryer Cartridge* Replacement Coalescing Cartridge For Wabco SS1800 Type Air...
    09-05170474
    SKU:
    09-05170474
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $104.99
    Qty in Cart: 0
    Price:
    $104.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Air Dryer Cartridge 10.5 X 6.5 Inch W/ Cartridge & O-Ring Replaces 170.T224, R955T224N For Turbo 2000 Type Air Dryers

    Air Dryer Cartridge 10.5 X 6.5 Inch W/ Cartridge & O-Ring Replaces 170.T224, R955T224N For Turbo 2000 Type Air Dryers

    AFTERMARKET

    $57.99
    Air Dryer Cartridge 1.5 Inch 16 Thread Fits Turbo 2000 Type Air Dryers Replaces 170.T224, R955T224N* High Quality Air Dryer Cartridge* Replacement Desiccant Cartridge For Turbo 2000 Type Air Dryers*...
    09-05170473
    SKU:
    09-05170473
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $57.99
    Qty in Cart: 0
    Price:
    $57.99
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  • FREE SHIPPING
    Air Dryer Cartridge W/ 1/4 Inch NPT Control Port & 1/2 Inch NPT Inlet & Delivery Ports

    Air Dryer Cartridge W/ 1/4 Inch NPT Control Port & 1/2 Inch NPT Inlet & Delivery Ports

    AFTERMARKET

    $256.99
    Air Dryer Cartridge W/ Heater Repair Kit & Purge Valve Replaces 170.955300, R955300* High Quality Air Dryer Cartridge* Wabco SS1200P Type Compatibility* Complete SS1200P Non-Regeneration Type Air...
    09-05170468
    SKU:
    09-05170468
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $256.99
    Qty in Cart: 0
    Price:
    $256.99
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  • FREE SHIPPING OVER $249
    Governor W/ Tire Inflator Valve Replaces 002-431-00-06, 002-431-49-06

    Governor W/ Tire Inflator Valve Replaces 002-431-00-06, 002-431-49-06

    AFTERMARKET

    $68.99
    Governor W/ Operating Temps -40 To 185 Degree Fahrenheit* High Quality Governor* Operating Temps From -40 To 185 Degrees Farenheit* Tire Inflator Valve* Sold Individually* Warranty On Governors...
    09-05170479
    SKU:
    09-05170479
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $68.99
    Qty in Cart: 0
    Price:
    $68.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Air Dryer Cartridge PG AD-9 Cartridge W/ Cartridge & O-Ring

    Air Dryer Cartridge PG AD-9 Cartridge W/ Cartridge & O-Ring

    AFTERMARKET

    $61.99
    Air Dryer Cartridge W/ 150 Lb Per Square Inch Max Operation Pressure* High Quality Air Dryer Cartridge* PG AD-9 Cartridge Type* Replacement For Bendix AD-8* Desiccant-Coalescing* 150 Lb Per Square...
    09-05170470
    SKU:
    09-05170470
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $61.99
    Qty in Cart: 0
    Price:
    $61.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Purge Valve Kit W/ Soft Seat Piston Assembly Replaces 034087, 107798 For AD9 Type Air Dryer

    Purge Valve Kit W/ Soft Seat Piston Assembly Replaces 034087, 107798 For AD9 Type Air Dryer

    AFTERMARKET

    $19.99
    Purge Valve Kit 1/8 Inch NPT Thread Replaces 034087, 107798* High Quality Purge Valve Kit* Maintenance Kit for Purge Valve Assembly For AD9 Type Air Dryer (Not Included)* Hard Seat* 1/8 Inch NPT...
    09-05170469
    SKU:
    09-05170469
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $19.99
    Qty in Cart: 0
    Price:
    $19.99
    Subtotal:
  • FREE SHIPPING
    Air Dryer Cartridge Primary/Secondary Port 1/4 Inch NPT Replaces BWK049086, BXK049086

    Air Dryer Cartridge Primary/Secondary Port 1/4 Inch NPT Replaces BWK049086, BXK049086

    AFTERMARKET

    $692.99
    Air Dryer Cartridge W/ Opening Pressures 103 - 112 PSI* High Quality Air Dryer Cartridge* Complete ADIS Type Air Dryer Assembly 12V-90W* Primary Port 1/4in NPT, Opening Pressure 103PSI* Secondary...
    09-05170464
    SKU:
    09-05170464
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $692.99
    Qty in Cart: 0
    Price:
    $692.99
    Subtotal:
  • FREE SHIPPING
    Air Dryer Cartridge W/ 130 Lb Per Square Inch Max Operating Pressure Replaces 432421039R, 4324210540 For Wabco SS1800P Type Air Dryers

    Air Dryer Cartridge W/ 130 Lb Per Square Inch Max Operating Pressure Replaces 432421039R, 4324210540 For Wabco SS1800P Type Air Dryers

    AFTERMARKET

    $347.99
    Air Dryer Cartridge M39 1.5 Thread W/ Control Port 1/4 Inch - 18 NPTF & Delivery Port 1/2 Inch 14 NPTF Fits Wabco SS1800P Type Air Dryers* High Quality Air Dryer Cartridge* Replacement Coalescing...
    09-05170475
    SKU:
    09-05170475
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $347.99
    Qty in Cart: 0
    Price:
    $347.99
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  • FREE SHIPPING
    Air Dryer Cartridge World American AD-IS Standard Design Replaces 170.800383, 3625-823-C

    Air Dryer Cartridge World American AD-IS Standard Design Replaces 170.800383, 3625-823-C

    AFTERMARKET

    $430.99
    Air Dryer Cartridge 1/4 Inch Accessory & Suspension Ports W/O Service Port* High Quality Air Dryer Cartridge* World American AD-IS Standard Cartridge Design* 12V DC, 90 W* 1/4 Inch Accessory And...
    09-05170466
    SKU:
    09-05170466
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $430.99
    Qty in Cart: 0
    Price:
    $430.99
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  • FREE SHIPPING
    Air Dryer Cartridge Complete SS1200UP Type Coalescing Replaces 20935355, 20991972

    Air Dryer Cartridge Complete SS1200UP Type Coalescing Replaces 20935355, 20991972

    AFTERMARKET

    $312.99
    Air Dryer Cartridge 12V DC & 100W* High Quality Air Dryer Cartridge* Complete SS1200UP Type Coalescing Air Dryer Assembly* 12V DC, 100W* Uses External Purge Tank, And Uses The Discharge Line For...
    09-05170465
    SKU:
    09-05170465
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $312.99
    Qty in Cart: 0
    Price:
    $312.99
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  • Stainless Steel Angled Bottom Mud Flap Weight 24 Inch Bolted

    Stainless Steel Angled Bottom Mud Flap Weight 24 Inch Bolted

    TRUX ACCESSORIES

    $52.99
    Bolted Angled Bottom Mud Flap Weight 24 Inch Stainless SteelAdd a polished, custom look to your truck with theStainless Steel Angled Bottom Mud Flap Weight 24 Inch Bolted. Crafted from durable...
    09-0507384
    SKU:
    09-0507384
    Product Type:
    Mud Flaps
    Ready To Ship:
    Yes
    Make:
    Universal Items
    $52.99
    Qty in Cart: 0
    Price:
    $52.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Air Dryer Cartridge 7.388 X 7.28 Inch Replaces 170.65624K, 065624 For ADIP Type Air Dryer

    Air Dryer Cartridge 7.388 X 7.28 Inch Replaces 170.65624K, 065624 For ADIP Type Air Dryer

    AFTERMARKET

    $160.99
    Air Dryer Cartridge W/ O-Ring & Grease* High Quality Air Dryer Cartridge* Replacement Desiccant Cartridge For ADIP Type Air Dryer* 150 Lb Per Square Inch Max Operation Pressure* Includes:  -...
    09-05170471
    SKU:
    09-05170471
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $160.99
    Qty in Cart: 0
    Price:
    $160.99
    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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