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Freightliner FLC120 Engine & Performance Parts

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • AirDog Fuel Pressure Splice W/ 1/8 Inch NPT Center Fitting Port

    AirDog Fuel Pressure Splice W/ 1/8 Inch NPT Center Fitting Port

    AIRDOG HD

    $13.00
    Fuel Pressure Splice W/ 1/8 Inch NPT Center Fitting Port By AirDog* High Quality Fuel Pressure Splice* Designed To Go Into A 1/2 Inch Fuel Hose* Includes:  - 1/8 Inch NPT Center Fitting Port* Sold...
    09-07030172
    SKU:
    09-07030172
    Product Type:
    Engine Parts
    Location:
    Made In USA
    Make:
    Universal Items
    $13.00
    Qty in Cart: 0
    Price:
    $13.00
    Subtotal:
  • Power Klenz 5007 Diesel Additive - 1 Quart

    Power Klenz 5007 Diesel Additive - 1 Quart

    AFTERMARKET

    $27.76
    1 Quart Power Klenz 5007 Diesel Additive* High Quality Diesel Enhancement* Increases Cetane 40 Points and Lubricity 67%* Cleans/Disperses Asphltenes and Injector Deposits* Prevents Sludge Induced...
    5007QT
    SKU:
    5007QT
    Product Type:
    Engine Parts
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $27.76
    Qty in Cart: 0
    Price:
    $27.76
    Subtotal:
  • BESTfit Six Bolt PowerShift Power Take-Off For Mechanical Transmissions Replaces 180274J, 270GBHVPB3XK, 272GBHVPB3RK

    BESTfit Six Bolt PowerShift Power Take-Off For Mechanical Transmissions Replaces 180274J, 270GBHVPB3XK, 272GBHVPB3RK

    BESTFIT TRUCK PARTS

    $3,311.99
    Six Bolt PowerShift Power Take-Off By BESTfit Replaces 180274J, 270GBHVPB3XK, 272GBHVPB3RK Fits Mechanical TransmissionsDesigned for strength and dependable operation, the BESTfit Six Bolt PowerShift...
    29-07050039
    SKU:
    29-07050039
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $3,311.99
    Qty in Cart: 0
    Price:
    $3,311.99
    Subtotal:
  • Lower Rear Motor Mount Bushing For Freightliner

    Lower Rear Motor Mount Bushing For Freightliner

    AUTOMANN USA

    $8.90
    Motor Mount Bushing Replaces 01-33244-000* High Quality Motor Mount Bushing* Lower Rear* 4 Inch Outer Diameter* 1.340 Inch Inner Diameter* 0.900 Inch Thick* Sold Individually* Warranty On Motor Mount...
    03-07120014
    SKU:
    03-07120014
    Product Type:
    Engine Parts
    Shape Options:
    Round
    Position:
    Lower
    Height Options:
    1 Inch
    Diameter Options:
    4 Inch
    Truck Class:
    Heavy Duty
    Make:
    Freightliner
    $8.90
    Qty in Cart: 0
    Price:
    $8.90
    Subtotal:
  • Differential Pressure Sensor Replaces A0111532928 For Freightliner

    Differential Pressure Sensor Replaces A0111532928 For Freightliner

    AFTERMARKET

    $65.99
    4 Pin Differential Pressure Sensor* High Quality Differential Pressure Sensor* 4 Pin* Rectangle Shape* 4.074 Inch Length* 2.900 Inch Width* Sold Individually* Warranty On Differential Pressure...
    03-07100006
    SKU:
    03-07100006
    Length Options:
    4 Inch
    Product Type:
    Engine Parts
    Width Options:
    2 3/4 Inch
    Shape Options:
    Rectangular
    Make:
    Freightliner
    $65.99
    Qty in Cart: 0
    Price:
    $65.99
    Subtotal:
  • Belt Tensioner Assembly - 1.692 X 2.913 OD Inch Pulley

    Belt Tensioner Assembly - 1.692 X 2.913 OD Inch Pulley

    AFTERMARKET

    $230.99
    Belt Tensioner Assembly* High Quality Tensioner Assembly* Steel And Poly* Dimensions:  - Pulley Width- 1.692 Inch  - Pulley O.D. 2.913 Inch* Sold Individually* Warranty On Tensioner Assemblies...
    29-07060023
    SKU:
    29-07060023
    Product Type:
    Engine Parts
    Material Options:
    Steel
    Make:
    Universal Items
    $230.99
    Qty in Cart: 0
    Price:
    $230.99
    Subtotal:
  • Belt Tensioner Assembly - 1.279X 2.362 OD Inch Pulley

    Belt Tensioner Assembly - 1.279X 2.362 OD Inch Pulley

    AFTERMARKET

    $155.99
    Belt Tensioner Assembly* High Quality Tensioner Assembly* Steel And Poly* Dimensions:  - Pulley Width- 1.279 Inch  - Pulley O.D. 2.362 Inch* Sold Individually* Warranty On Tensioner Assemblies...
    29-07060025
    SKU:
    29-07060025
    Product Type:
    Engine Parts
    Material Options:
    Steel
    Make:
    Universal Items
    $155.99
    Qty in Cart: 0
    Price:
    $155.99
    Subtotal:
  • Belt Tensioner Assembly - 1.10 X 3.15 OD Inch Pulley

    Belt Tensioner Assembly - 1.10 X 3.15 OD Inch Pulley

    AFTERMARKET

    $151.99
    Belt Tensioner Assembly* High Quality Tensioner Assembly* Steel And Poly* Dimensions:  - Pulley Width 1.10 Inch  - Pulley O.D. 3.15 Inch* Sold Individually* Warranty On Tensioner Assemblies Against...
    29-07060032
    SKU:
    29-07060032
    Product Type:
    Engine Parts
    Material Options:
    Steel
    Make:
    Universal Items
    $151.99
    Qty in Cart: 0
    Price:
    $151.99
    Subtotal:
  • Tensioner Assembly - 1.574 X 2.952 OD Inch Pulley

    Tensioner Assembly - 1.574 X 2.952 OD Inch Pulley

    AFTERMARKET

    $288.99
    Belt Tensioner Assembly* High Quality Tensioner Assembly* Steel And Poly* Dimensions:  - Pulley Width- 1.574 Inch  - Pulley O.D. 2.952 Inch* Sold Individually* Warranty On Tensioner Assemblies...
    29-07060021
    SKU:
    29-07060021
    Product Type:
    Engine Parts
    Material Options:
    Steel
    Make:
    Universal Items
    $288.99
    Qty in Cart: 0
    Price:
    $288.99
    Subtotal:
  • Belt Tensioner Assembly - 1.311 X 3.023 OD Inch Pulley

    Belt Tensioner Assembly - 1.311 X 3.023 OD Inch Pulley

    AFTERMARKET

    $162.99
    Belt Tensioner Assembly* High Quality Tensioner Assembly* Steel And Poly* Dimensions:  - Pulley Width- 1.311 Inch  - Pulley O.D. 3.023 Inch* Number Of Grooves- 8* Sold Individually* Warranty On...
    29-07060022
    SKU:
    29-07060022
    Product Type:
    Engine Parts
    Material Options:
    Steel
    Make:
    Universal Items
    $162.99
    Qty in Cart: 0
    Price:
    $162.99
    Subtotal:
  • Belt Tensioner Assembly - 1.574 X 3.405 OD Inch Pulley

    Belt Tensioner Assembly - 1.574 X 3.405 OD Inch Pulley

    AFTERMARKET

    $213.99
    Belt Tensioner Assembly* High Quality Tensioner Assembly* Steel And Poly* Dimensions:  - Pulley Width- 1.574 Inch  - Pulley O.D. 3.405 Inch* Sold Individually* Warranty On Tensioner Assemblies...
    29-07060015
    SKU:
    29-07060015
    Product Type:
    Engine Parts
    Material Options:
    Steel
    Make:
    Universal Items
    $213.99
    Qty in Cart: 0
    Price:
    $213.99
    Subtotal:
  • Belt Tensioner Assembly - 1.811 X 3.149 OD Inch Pulley

    Belt Tensioner Assembly - 1.811 X 3.149 OD Inch Pulley

    AFTERMARKET

    $189.99
    Belt Tensioner Assembly* High Quality Tensioner Assembly* Steel And Poly* Dimensions:  - Pulley Width- 1.811 Inch  - Pulley O.D. 3.149 Inch* Number Of Grooves- 6* Sold Individually* Warranty On...
    29-07060018
    SKU:
    29-07060018
    Product Type:
    Engine Parts
    Material Options:
    Steel
    Make:
    Universal Items
    $189.99
    Qty in Cart: 0
    Price:
    $189.99
    Subtotal:
  • Belt Tensioner Assembly - 1.826 X 2.952 OD Inch Pulley

    Belt Tensioner Assembly - 1.826 X 2.952 OD Inch Pulley

    AFTERMARKET

    $197.99
    Belt Tensioner Assembly* High Quality Tensioner Assembly* Steel And Poly* Dimensions:  - Pulley Width- 1.826 Inch  - Pulley O.D. 2.952 Inch* Sold Individually* Warranty On Tensioner Assemblies...
    29-07060017
    SKU:
    29-07060017
    Product Type:
    Engine Parts
    Material Options:
    Steel
    Make:
    Universal Items
    $197.99
    Qty in Cart: 0
    Price:
    $197.99
    Subtotal:
  • Belt Tensioner Assembly - 2.244 X 2.913 OD Inch Pulley For Kenworth T660, Peterbilt 379

    Belt Tensioner Assembly - 2.244 X 2.913 OD Inch Pulley For Kenworth T660, Peterbilt 379

    AFTERMARKET

    $220.99
    Belt Tensioner Assembly* High Quality Tensioner Assembly* Steel And Poly* Dimensions:  - Pulley Width- 2.244 Inch  - Pulley O.D. 2.913 Inch* Sold Individually* Warranty On Tensioner Assemblies...
    29-07060024
    SKU:
    29-07060024
    Product Type:
    Engine Parts
    Material Options:
    Steel
    Make:
    Universal Items
    $220.99
    Qty in Cart: 0
    Price:
    $220.99
    Subtotal:
  • Belt Tensioner Assembly - 1.62 X 2.75 OD Pulley

    Belt Tensioner Assembly - 1.62 X 2.75 OD Pulley

    AFTERMARKET

    $606.99
    Belt Tensioner Assembly* High Quality Tensioner Assembly* Steel And Poly* Dimensions:  - Pulley Width 2.620 Inch  - Pulley O.D. 5.750 Inch* Number Of Grooves- 2* Sold Individually* Warranty On...
    29-07060004
    SKU:
    29-07060004
    Product Type:
    Engine Parts
    Material Options:
    Steel
    Make:
    Universal Items
    $606.99
    Qty in Cart: 0
    Price:
    $606.99
    Subtotal:
  • Belt Tensioner Assembly - 1.279 X 2.952 OD Inch Pulley

    Belt Tensioner Assembly - 1.279 X 2.952 OD Inch Pulley

    AFTERMARKET

    $138.99
    Belt Tensioner Assembly* High Quality Tensioner Assembly* Steel And Poly* Dimensions:  - Pulley Width- 1.279 Inch  - Pulley O.D. 2.952 Inch* Sold Individually* Warranty On Tensioner Assemblies...
    29-07060014
    SKU:
    29-07060014
    Product Type:
    Engine Parts
    Material Options:
    Steel
    Make:
    Universal Items
    $138.99
    Qty in Cart: 0
    Price:
    $138.99
    Subtotal:
  • Belt Tensioner Assembly - 1.826 X 2.952 OD Inch Pulley Replaces 49587, 38634, 1873217C1

    Belt Tensioner Assembly - 1.826 X 2.952 OD Inch Pulley Replaces 49587, 38634, 1873217C1

    AFTERMARKET

    $211.99
    Belt Tensioner Assembly* High Quality Tensioner Assembly* Steel And Poly* Dimensions:  - Pulley Width- 1.826 Inch  - Pulley O.D. 2.952 Inch* Sold Individually* Warranty On Tensioner Assemblies...
    29-07060020
    SKU:
    29-07060020
    Product Type:
    Engine Parts
    Material Options:
    Steel
    Make:
    Universal Items
    $211.99
    Qty in Cart: 0
    Price:
    $211.99
    Subtotal:
  • Belt Tensioner Assembly - 1.574 X 2.952 OD Pulley

    Belt Tensioner Assembly - 1.574 X 2.952 OD Pulley

    AFTERMARKET

    $171.99
    Belt Tensioner Assembly* High Quality Tensioner Assembly* Steel And Poly* Dimensions:  - Pulley Width- 1.574 Inch  - Pulley O.D. 2.952 Inch* Sold Individually* Warranty On Tensioner Assemblies...
    29-07060013
    SKU:
    29-07060013
    Product Type:
    Engine Parts
    Material Options:
    Steel
    Make:
    Universal Items
    $171.99
    Qty in Cart: 0
    Price:
    $171.99
    Subtotal:
  • Belt Tensioner Assembly - 1.574 X 2.952 OD Inch Pulley

    Belt Tensioner Assembly - 1.574 X 2.952 OD Inch Pulley

    AFTERMARKET

    $173.99
    Belt Tensioner Assembly* High Quality Tensioner Assembly* Steel And Poly* Dimensions:  - Pulley Width- 1.574 Inch  - Pulley O.D. 2.952 Inch* Sold Individually* Warranty On Tensioner Assemblies...
    29-07060016
    SKU:
    29-07060016
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $173.99
    Qty in Cart: 0
    Price:
    $173.99
    Subtotal:
  • Belt Tensioner Assembly - 1.535 X 2.952 OD Pulley

    Belt Tensioner Assembly - 1.535 X 2.952 OD Pulley

    AFTERMARKET

    $186.99
    Belt Tensioner Assembly* High Quality Tensioner Assembly* Steel And Poly* Dimensions:  - Pulley Width- 1.279 Inch  - Pulley O.D. 2.952 Inch* Sold Individually* Warranty On Tensioner Assemblies...
    29-07060008
    SKU:
    29-07060008
    Product Type:
    Engine Parts
    Material Options:
    Steel
    Make:
    Universal Items
    $186.99
    Qty in Cart: 0
    Price:
    $186.99
    Subtotal:
  • Total: items /

Adding your products to cart

Freightliner FLC120 Engine & Performance Parts: Unlock power and efficiency for your Freightliner FLC120 with our wide selection of engine and performance upgrades. From fuel systems and turbochargers to exhaust parts and more, we've got the components you need to improve fuel economy, boost horsepower, and unleash the full potential of your Class 8 Freightliner. Whether you're hauling heavy loads or looking to enhance your truck's performance, our premium parts and accessories are designed to deliver outstanding results. Upgrade your FLC120 today and experience the difference in power, responsiveness, and overall driving experience.

Frequently Asked Questions About Freightliner FLC120 Engine & Performance Parts

Will these engine and performance parts fit my specific FLC120 model year and engine setup?

The Freightliner FLC120 was produced over many model years and was offered with different engine options, so fitment can vary significantly from one truck to another. Before ordering, check the part description for listed year ranges and engine compatibility, and have your engine make and model on hand (such as Detroit Diesel, Cummins, or Caterpillar) to confirm the part matches your specific configuration. If you are unsure, our team can help verify fitment using your VIN or engine serial number.

Are these parts OEM, aftermarket, or reconditioned?

This category includes a mix of OEM, aftermarket, and reconditioned components depending on the specific item. Each product listing notes whether the part is new OEM, new aftermarket, or a quality reconditioned unit, so you can choose based on your budget and preference. If a listing does not clearly state the part's origin, reach out to us for clarification before purchasing.

What materials and construction can I expect from these components?

Engine and performance parts in this category are typically made from durable materials such as cast iron, aluminum, or steel, depending on the part's function and the demands it needs to withstand. We aim to source components built to hold up under regular commercial use, and material details are included in individual product descriptions when relevant.

Do I need professional installation, or can I install these parts myself?

Installation complexity varies widely across this category. Smaller components like sensors, gaskets, or filters may be manageable for an experienced DIY mechanic with the right tools, while larger performance parts such as turbochargers, exhaust components, or engine accessories often require professional installation and specialized equipment. If you're unsure about the difficulty level for a specific part, check the product notes or contact our team for guidance.

How do I know if a part will improve performance versus just replacing a worn component?

Some items in this category are direct replacement parts designed to restore your engine to factory specifications, while others are performance-oriented upgrades intended to enhance power, efficiency, or durability beyond stock levels. Product titles and descriptions typically indicate which category a part falls into, so review this information carefully to match the part to your goals, whether that's routine maintenance or a performance upgrade.


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