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New Products

Check out Semi Truck New Products at 4 State Trucks! Do you have fitment questions? Our Parts Pros are ready to help! Time for an upgrade - give us a call for top-notch customer service and shop now!
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  • Qty in Cart
  • Quantity
  • Price
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  • AirDog Raptor RP-4G-100 Fuel Pump System For Dodge VE-44 12V Cummins

    AirDog Raptor RP-4G-100 Fuel Pump System For Dodge VE-44 12V Cummins

    AIRDOG HD

    $504.00
    Raptor RP-4G-100 Fuel Pump System By AirDog W/ 14 Foot Fuel Line* High Quality Raptor Fuel Pump System* Raptor RP-4G-100 Design* For Models With VE-44 12V Cummins* Includes:  - (1) Raptor 4G-100 Fuel...
    17-07030099
    SKU:
    17-07030099
    Product Type:
    Engine Parts
    $504.00
    Qty in Cart: 0
    Price:
    $504.00
    Subtotal:
  • AirDog II DF-165-5G Air Stroke System For Dodge Ram Common Rail Cummins 2004-2024

    AirDog II DF-165-5G Air Stroke System For Dodge Ram Common Rail Cummins 2004-2024

    AIRDOG HD

    $881.00
    II DF-165-5G Air Stroke System By AirDog W/ Front & Back Frame Bracket* High Quality Air Dog Air Stroke System* AirDog II DF-165-5G Air Stroke* For Models With The Common Rail Cummins* Includes:  -...
    17-07030095
    SKU:
    17-07030095
    Product Type:
    Engine Parts
    $881.00
    Qty in Cart: 0
    Price:
    $881.00
    Subtotal:
  • Bulldog Black Universal Shock Absorber 16.8 To 26.42 Inch Length W/ Eyelet Upper & Lower Mount

    Bulldog Black Universal Shock Absorber 16.8 To 26.42 Inch Length W/ Eyelet Upper & Lower Mount

    BULLDOG HD SHOCKS

    $80.99
    Black Universal Shock Absorber 16.8 To 26.42 Inch Length W/ Eyelet Upper & Lower Mount* High Quality Universal Shock Absorber* Semi Gloss Finish* Robotic 360 Degree Welds* Highest Weld Strength In...
    29-050000213
    SKU:
    29-050000213
    Product Type:
    Frame & Chassis
    $80.99
    Qty in Cart: 0
    Price:
    $80.99
    Subtotal:
  • AirDog II DF-100-5G Air Stroke System For Dodge Ram Common Rail Cummins 2004-2024

    AirDog II DF-100-5G Air Stroke System For Dodge Ram Common Rail Cummins 2004-2024

    AIRDOG HD

    $858.00
    II DF-100-5G Air Stroke System By AirDog W/ Front & Back Frame Bracket* High Quality Air Dog Air Stroke System* AirDog II DF-100-5G Air Stroke* For Models With The Common Rail Cummins* Includes:  -...
    17-07030091
    SKU:
    17-07030091
    Product Type:
    Engine Parts
    $858.00
    Qty in Cart: 0
    Price:
    $858.00
    Subtotal:
  • FREE SHIPPING OVER $249
    Black Plastic Radar Sensor Cover Replaces N221321412, N221321411 For Peterbilt 579 & Kenworth T680

    Black Plastic Radar Sensor Cover Replaces N221321412, N221321411 For Peterbilt 579 & Kenworth T680

    UNITED PACIFIC

    $25.99
    Plastic Black Radar Sensor Cover Fits Peterbilt 579 & Kenworth T680 Replaces N221321412, N221321411* High Quality Radar Sensor Cover* Made Of Plastic* Embossed With DO NOT PAINT Lettering As Original...
    29-0107005
    SKU:
    29-0107005
    Product Type:
    Bumpers
    Location:
    Made In USA
    Material Options:
    Plastic/Poly
    Color:
    Black
    Make:
    Peterbilt
    Make:
    Kenworth
    $25.99
    Qty in Cart: 0
    Price:
    $25.99
    Subtotal:
  • AirDog II DF-100-5G Air Stroke System For Dodge Ram Cummins 12V VE-44 5.9L

    AirDog II DF-100-5G Air Stroke System For Dodge Ram Cummins 12V VE-44 5.9L

    AIRDOG HD

    $858.00
    II DF-100-5G Air Stroke System By AirDog W/ 20 Foot Hose* High Quality Air Dog Air Stroke System* AirDog II DF-100-5G Air Stroke* For Models With 12V VE-44 5.9L Cummins* Includes:  - (1) Air Stroke ...
    17-07030087
    SKU:
    17-07030087
    Product Type:
    Engine Parts
    $858.00
    Qty in Cart: 0
    Price:
    $858.00
    Subtotal:
  • Steel Leaf Spring Suspension 27 Inch Axis 1 & 32 Inch Axis 2 Length

    Steel Leaf Spring Suspension 27 Inch Axis 1 & 32 Inch Axis 2 Length

    DAYTON / DORMAN

    $1,514.99
    Steel Leaf Spring Suspension W/ 5 Leaves & 2 Threaded M32 X 4 Inch Diameter Bushing Pins* High Quality Leaf Spring Suspension* Made Of Steel* Full Taper Front Axle Type* Includes:  - (2) Up Turned...
    29-05090259
    SKU:
    29-05090259
    Material Options:
    Steel
    Product Type:
    Frame & Chassis
    Location:
    Made In USA
    Make:
    Universal Items
    $1,514.99
    Qty in Cart: 0
    Price:
    $1,514.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Filter-Equipped Filler Cartridge W/ Aluminum Cartridge Body & Hex Thread For Trailer Axles

    Filter-Equipped Filler Cartridge W/ Aluminum Cartridge Body & Hex Thread For Trailer Axles

    THE HUB CORPORATION

    $45.99
    Filler Cartridge W/ Rubber Vent Plug & Sight GlassTheFilter Equipped Filler Cartridge with Aluminum Cartridge Body & Hex Threadprovides a convenient upgrade fortrailer axle hub cap applications. This...
    19-20200031
    SKU:
    19-20200031
    Product Type:
    Trailer
    Material Options:
    Aluminum
    Make:
    Trailer
    $45.99
    Qty in Cart: 0
    Price:
    $45.99
    Subtotal:
  • Bulldog Black Rear Shock Absorber 18.73 To 31.1 Inch W/ Eyelet Upper & Stud Lower Mount

    Bulldog Black Rear Shock Absorber 18.73 To 31.1 Inch W/ Eyelet Upper & Stud Lower Mount

    BULLDOG HD SHOCKS

    $86.99
    Black Rear Shock Absorber 18.73 To 31.1 Inch W/ Eyelet Upper & Stud Lower Mount* High Quality Rear Shock Absorber* Semi Gloss Finish* Robotic 360 Degree Welds* Highest Weld Strength In The Industry*...
    29-050000216
    SKU:
    29-050000216
    Product Type:
    Frame & Chassis
    $86.99
    Qty in Cart: 0
    Price:
    $86.99
    Subtotal:
  • AirDog FP-150-4G Air Stroke System For Dodge Ram Cummins VE44 1989-1993

    AirDog FP-150-4G Air Stroke System For Dodge Ram Cummins VE44 1989-1993

    AIRDOG HD

    $774.00
    FP-150-4G Air Stroke System By AirDog W/ Front & Back Frame Bracket* High Quality Air Dog Air Stroke System* Original AirDog FP-150-4G Air Stroke* For Models With The VE44 Cummins* Includes:  - (1)...
    17-07030083
    SKU:
    17-07030083
    Product Type:
    Engine Parts
    $774.00
    Qty in Cart: 0
    Price:
    $774.00
    Subtotal:
  • Bulldog Black Universal Shock Absorber 16.05 To 24.96 Inch W/ Stud Upper & Eyelet Lower Mount

    Bulldog Black Universal Shock Absorber 16.05 To 24.96 Inch W/ Stud Upper & Eyelet Lower Mount

    BULLDOG HD SHOCKS

    $69.99
    Black Universal Shock Absorber 16.05 To 24.96 Inch W/ Stud Upper & Eyelet Lower Mount* High Quality Universal Shock Absorber* Semi Gloss Finish* Robotic 360 Degree Welds* Highest Weld Strength In The...
    29-050000214
    SKU:
    29-050000214
    Product Type:
    Frame & Chassis
    $69.99
    Qty in Cart: 0
    Price:
    $69.99
    Subtotal:
  • Bulldog Black Rear Shock Absorber 16.97 X 26.26 Inch Length W/ Eyelet Upper & Lower Mount

    Bulldog Black Rear Shock Absorber 16.97 X 26.26 Inch Length W/ Eyelet Upper & Lower Mount

    BULLDOG HD SHOCKS

    $65.99
    Black Rear Shock Absorber 16.97 X 26.26 Inch Length W/ Eyelet Upper & Lower Mount* High Quality Rear Shock Absorber* Semi Gloss Finish* Robotic 360 Degree Welds* Highest Weld Strength In The...
    29-050000212
    SKU:
    29-050000212
    Product Type:
    Frame & Chassis
    $65.99
    Qty in Cart: 0
    Price:
    $65.99
    Subtotal:
  • AirDog FP-100-4G Air Stroke System For Dodge Ram Cummins 12V 1994-1998

    AirDog FP-100-4G Air Stroke System For Dodge Ram Cummins 12V 1994-1998

    AIRDOG HD

    $769.00
    FP-100-4G Air Stroke System By AirDog W/ Front & Back Frame Bracket* High Quality Air Dog Air Stroke System* Original AirDog FP-100-4G Air Stroke* For Models With The P-Pump 12V* Includes:  - (1) Air...
    17-07030079
    SKU:
    17-07030079
    Product Type:
    Engine Parts
    $769.00
    Qty in Cart: 0
    Price:
    $769.00
    Subtotal:
  • Bulldog Black Rear Shock Absorber 17.68 To 29.57 Length W/ Stud Upper & Lower Mount

    Bulldog Black Rear Shock Absorber 17.68 To 29.57 Length W/ Stud Upper & Lower Mount

    BULLDOG HD SHOCKS

    $80.99
    Black Rear Shock Absorber 17.68 To 29.57 Length W/ Stud Upper & Lower Mount* High Quality Rear Shock Absorber* Semi Gloss Finish* Robotic 360 Degree Welds* Highest Weld Strength In The Industry*...
    29-050000210
    SKU:
    29-050000210
    Product Type:
    Frame & Chassis
    $80.99
    Qty in Cart: 0
    Price:
    $80.99
    Subtotal:
  • AirDog RP-4G-150 Raptor Fuel Pump System For Dodge Cummins W/ Block Mounted Fuel Pumps

    AirDog RP-4G-150 Raptor Fuel Pump System For Dodge Cummins W/ Block Mounted Fuel Pumps

    AIRDOG HD

    $573.00
    RP-4G-150 Raptor Fuel Pump System By AirDog W/ 14 Foot Fuel Line* High Quality Raptor Fuel Pump System* Raptor RP-4G-150 Design* For Models With Block Mounted Fuel Pumps* Includes:  - (1) Raptor...
    17-07030109
    SKU:
    17-07030109
    Product Type:
    Engine Parts
    $573.00
    Qty in Cart: 0
    Price:
    $573.00
    Subtotal:
  • FREE SHIPPING
    Filter-Equipped Starter Kit W/ 2 Filler Cartridge Replacement & Hex Thread Socket Tool

    Filter-Equipped Starter Kit W/ 2 Filler Cartridge Replacement & Hex Thread Socket Tool

    THE HUB CORPORATION

    $404.99
    Starter Kit W/ 4 Spare Rubber Vent Plugs & 4 Greased Trailer/TN Tapered Spindle Axle Hub CapsMake trailer axle maintenance easier with thisHigh Quality Filter-Equipped Starter Kit. Designed...
    19-20200032
    SKU:
    19-20200032
    Product Type:
    Trailer
    $404.99
    Qty in Cart: 0
    Price:
    $404.99
    Subtotal:
  • AirDog Raptor RP-4G-100 Fuel Pump System For Dodge Common Rail Cummins

    AirDog Raptor RP-4G-100 Fuel Pump System For Dodge Common Rail Cummins

    AIRDOG HD

    $525.00
    Raptor RP-4G-100 Fuel Pump System By AirDog W/ 14 Foot Fuel Line* High Quality Raptor Fuel Pump System* Raptor RP-4G-100 Design* For Models With The Common Rail Cummins* Includes:  - (1) Raptor...
    17-07030105
    SKU:
    17-07030105
    Product Type:
    Engine Parts
    $525.00
    Qty in Cart: 0
    Price:
    $525.00
    Subtotal:
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Adding your products to cart

The Semi-Truck New Products category offers a variety of accessories and components, to enhance your truck's functionality, appearance, and comfort. Key products include: - Custom sleeper cab panels and trim for Peterbilt 389 and 379 - stainless steel and aluminum exterior accessories like bumper guards and fuel tank covers - LED lighting upgrades for better visibility - Comfort items like air ride seats and heated seat cushions - Performance upgrades such as exhaust systems and suspension components

Frequently Asked Questions About Semi-Truck New Products

What truck models and years are compatible with your new bumpers and accessories?

Our new products are designed for popular models including Peterbilt 379, 389, and 359; Kenworth W900, T800, and T600; Freightliner Classic and Coronado; and Western Star 4900. Most items fit trucks from 1990 to current model years, but exact compatibility varies by product. Each product page includes a detailed fitment guide with specific year ranges and model numbers. If you're unsure about compatibility, call our tech support at 1-888-875-7787 with your truck's OEM for verification.

What materials are used in your bumpers, and how thick is the steel?

Our aftermarket bumpers are typically made from either 16-gauge (.0598") or 14-gauge (.0747") cold-rolled steel, depending on the specific model. Premium options feature 304 stainless steel with 16-gauge construction. All bumpers include reinforced mounting brackets and use automotive-grade primers and finishes. Chrome bumpers feature triple-plated nickel-chrome over copper base for maximum durability and shine retention.

Do I need special tools or professional installation for these products?

Most bumper installations require basic hand tools including socket sets (typically 3/4" and 7/8"), wrenches, and a drill with metal bits for some applications. Installation typically takes 2-4 hours for experienced mechanics. While many owner-operators successfully install these themselves, some products like air ride suspensions or complex light bars may benefit from professional installation. Each product includes detailed instructions, and we offer phone support for DIY installers.

What finish options are available, and how do they hold up to road conditions?

We offer chrome-plated, polished stainless steel, painted, and powder-coated finishes. Chrome bumpers feature triple-plating for corrosion resistance but require regular polishing in salt-belt states. Stainless steel options need less maintenance but show fingerprints more easily. Powder-coated finishes come in black, white, and custom colors, offering excellent chip resistance. All finishes are tested for UV resistance and road chemical exposure.

What's your return policy if a product doesn't fit or meet expectations?

We offer a 180-day return policy on most new products in original packaging with no installation marks. Custom-ordered or modified items are non-returnable. Shipping costs for returns are the customer's responsibility unless we shipped the wrong item. Before ordering, we recommend calling to confirm fitment to avoid return shipping costs. Defective items are covered under manufacturer warranties ranging from 90 days to 3 years depending on the product.


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