null

Engine & Performance Parts

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • High Performance Stage 1.5 Turbocharger For Caterpillar 3406B, C, E, C15 & C16 Engines

    High Performance Stage 1.5 Turbocharger For Caterpillar 3406B, C, E, C15 & C16 Engines

    BULLY DOG

    $2,050.00
    Bully Dog High Performance Stage 1.5 Turbocharger Fits Caterpillar 3406B/C/E/C15/C16Increase horsepower and decrease fuel costs of your class 8 vehicle with this high performance Stage 1.5...
    29-0704106
    SKU:
    29-0704106
    Truck Class:
    Heavy Duty
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    Color:
    Black
    Finish Options:
    Black Powder Coat
    Style Options:
    Caterpillar
    Make:
    Universal Items
    Location:
    Made In USA
    Material Options:
    Aluminum
    Type Options:
    Bolt Mount
    $2,050.00
    Qty in Cart: 0
    Price:
    $2,050.00
    Subtotal:
  • Bully Dog ECM Tuner W/ Emissions Tested & Diagnostic Reader For Caterpillar C11, 12, 13, 15 & 16

    Bully Dog ECM Tuner W/ Emissions Tested & Diagnostic Reader For Caterpillar C11, 12, 13, 15 & 16

    BULLY DOG

    $849.95
    Bully Dog ECM Tuner W/ Speed Limiter Adjustments Fits Caterpillar C11, 12, 13, 15 & 16Get more from your CAT engine with the Bully Dog ECM Tuner, engineered for C16, C15, C13, C12, and C11 models...
    29-0704091
    SKU:
    29-0704091
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Style Options:
    Caterpillar
    Location:
    Made In USA
    $849.95
    Qty in Cart: 0
    Price:
    $849.95
    Subtotal:
  • ECM Tuner For Cummins ISX, ISL, ISM & ISC Engines

    ECM Tuner For Cummins ISX, ISL, ISM & ISC Engines

    BULLY DOG

    $849.95
    Bully Dog ECM Tuner Fits Cummins ISX, ISM, ISL & ISCIf you are looking for a simple platform to load independently SAE tested tuning to your truck, 4 State Trucks offers this high quality ECM Tuner...
    29-0704090
    SKU:
    29-0704090
    Truck Class:
    Heavy Duty
    Make:
    International
    Make:
    Volvo
    Make:
    Freightliner
    Make:
    Sterling
    Make:
    Kenworth
    Make:
    Western Star
    Make:
    Peterbilt
    Product Type:
    Engine Parts
    $849.95
    Qty in Cart: 0
    Price:
    $849.95
    Subtotal:
  • Ceramic-Coated Exhaust Manifold Replaces 146-9445 For Kenworth & Peterbilt With Holeset Turbo

    Ceramic-Coated Exhaust Manifold Replaces 146-9445 For Kenworth & Peterbilt With Holeset Turbo

    BULLY DOG

    $2,264.89
    Exhaust Manifold Fits Kenworth And PeterbiltUpgrade a stock manifold on a Caterpillar engine with this premium, heavy duty Bully Dog ceramic coated exhaust manifold. It is one of the fastest flowing...
    29-0704083
    SKU:
    29-0704083
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Make:
    Kenworth
    Make:
    Peterbilt
    Material Options:
    Steel
    Product Type:
    Engine Parts
    $2,264.89
    Qty in Cart: 0
    Price:
    $2,264.89
    Subtotal:
  • Detroit Engine Ceramic-Coated Exhaust Manifold Replaces 23519348 23511978 For Peterbilt / Kenworth

    Detroit Engine Ceramic-Coated Exhaust Manifold Replaces 23519348 23511978 For Peterbilt / Kenworth

    BULLY DOG

    $1,975.00
    Detroit Diesel Non EGR High Mount Ceramic Coated HP Exhaust ManifoldThe Full Tilt Performance Ceramic Coated Exhaust Manifold is tough and heat-resistant. It's designed with reinforced flanges and...
    29-0704075
    SKU:
    29-0704075
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Make:
    Peterbilt
    Material Options:
    Steel
    Product Type:
    Engine Parts
    $1,975.00
    Qty in Cart: 0
    Price:
    $1,975.00
    Subtotal:
  • Bully Dog ECM Tuner Diesel Tuner

    Bully Dog ECM Tuner Diesel Tuner

    BULLY DOG

    $849.00
    Bully Dog ECM Diesel TunerIf you are looking for a simple platform to load independently SAE tested tuning to your truck, 4 State Trucks offers this high quality ECM Tuner by Bully Dog for Detroit...
    29-0704073
    SKU:
    29-0704073
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    Make:
    Kenworth
    Make:
    Sterling
    Make:
    Freightliner
    Make:
    Western Star
    Product Type:
    Engine Parts
    $849.00
    Qty in Cart: 0
    Price:
    $849.00
    Subtotal:
  • Performance Module For Cummins ISX 2002-2010

    Performance Module For Cummins ISX 2002-2010

    AREA DIESEL SERVICE

    $2,902.99
    Performance Module For CumminsThe performance engine model is designed to fit Cummins ISX 2002-2010 models. The truck edition heavy-duty module controls timing, fuel, boost, and other vital engine...
    29-0704029
    SKU:
    29-0704029
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Make:
    International
    Make:
    Western Star
    Make:
    Freightliner
    Make:
    Volvo
    Make:
    Kenworth
    Make:
    Peterbilt
    Product Type:
    Engine Parts
    $2,902.99
    Qty in Cart: 0
    Price:
    $2,902.99
    Subtotal:
  • Mahle Crankshaft Replaces 2475241, 4330732 For Cummins ISX, QSX 15.0L

    Mahle Crankshaft Replaces 2475241, 4330732 For Cummins ISX, QSX 15.0L

    AUTOMANN USA

    $7,037.99
    Mahle Crankshaft Fits Cummins ISX & QSX 15.0L Engines* High Quality Mahle Crankshaft* Cummins ISX And QSX 15.0L * Sold Individually** Warranty On Mahle Crankshafts Against Defects In Workmanship &...
    29-070400047
    SKU:
    29-070400047
    Truck Class:
    Heavy Duty
    Product Type:
    Engine Parts
    $7,037.99
    Qty in Cart: 0
    Price:
    $7,037.99
    Subtotal:
  • BESTfit Exhaust Manifold Replaces 23516107 For Detroit Series 60 12.7L EGR

    BESTfit Exhaust Manifold Replaces 23516107 For Detroit Series 60 12.7L EGR

    BESTFIT TRUCK PARTS

    $534.99
    BESTfit Exhaust Manifold Fits Detroit Series 60 12.7L* High Quality Exhaust Manifold* For Detroit Series 60, 12.7L EGR Diesel Engines* 3 Pieces Includes:  - (1) Front End Section  - (1) Center...
    29-070400043
    SKU:
    29-070400043
    Truck Class:
    Heavy Duty
    Product Type:
    Engine Parts
    $534.99
    Qty in Cart: 0
    Price:
    $534.99
    Subtotal:
  • Big Rig Turbocharger For Detroit Series 60 DDEC 4 12.7L, 14.0L Engines By Bully Dog

    Big Rig Turbocharger For Detroit Series 60 DDEC 4 12.7L, 14.0L Engines By Bully Dog

    BULLY DOG

    $1,215.00
    Bully Dog 56900 Detroit Series 60 Big Rig TurboLooking for a turbocharger that amps up your ride? Bull Dog's turbo is all about boosting your performance without breaking a sweat. It's designed to...
    29-070400006
    SKU:
    29-070400006
    Truck Class:
    Heavy Duty
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $1,215.00
    Qty in Cart: 0
    Price:
    $1,215.00
    Subtotal:
  • S480 Big Cat Turbo Borg Warner With 1.58 Non-Waste Gated Turbine Housing For C15, C16, 3406E CAT

    S480 Big Cat Turbo Borg Warner With 1.58 Non-Waste Gated Turbine Housing For C15, C16, 3406E CAT

    AREA DIESEL SERVICE

    $3,362.99
    S480 Borg Warner Big CAT Turbo With 360 Degree Thrust Bearing For C15, C16 & 3406E Engines* High Quality Turbo* 1.58 Non Waste Gated Turbine Housing * Forged Milled Compressor Wheel * 360 Degree...
    29-070400001
    SKU:
    29-070400001
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Make:
    Freightliner
    Make:
    Volvo
    Make:
    Peterbilt
    Make:
    Kenworth
    Make:
    Western Star
    Make:
    International
    Product Type:
    Engine Parts
    $3,362.99
    Qty in Cart: 0
    Price:
    $3,362.99
    Subtotal:
  • Heavy Duty Electronic Throttle Body Replaces 3867648, 4934537, 4990721 For Cummins ISL-G, ISX-G

    Heavy Duty Electronic Throttle Body Replaces 3867648, 4934537, 4990721 For Cummins ISL-G, ISX-G

    DAYTON / DORMAN

    $574.99
    Heavy Duty Electronic Throttle Body Fits Cummins ISL-G & ISX-G Engines* High Quality Heavy Duty Electronic Throttle Body* Aluminum Case* Adjustable: No* Bore Diameter: 2.89 In* Color/Finish: Natural*...
    29-0703514
    SKU:
    29-0703514
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Make:
    Peterbilt
    Product Type:
    Engine Parts
    $574.99
    Qty in Cart: 0
    Price:
    $574.99
    Subtotal:
  • Mounting Package For Fuel Pump W/ 290 GPH Flow Ratings

    Mounting Package For Fuel Pump W/ 290 GPH Flow Ratings

    FASS

    $77.99
    Mounting Package For Fuel Pump W/ 290 GPH Flow Ratings* High Quality Mounting Package* For Fuel Pumps With 290 Gallons Per Hour Flow Rating* Made In The USA* Sold Individually* Warranty On Mounting...
    29-070300007
    SKU:
    29-070300007
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $77.99
    Qty in Cart: 0
    Price:
    $77.99
    Subtotal:
  • FASS Industrial Series Diesel 290 GPH Fuel System For Class 8 Detroit DD15 Engines

    FASS Industrial Series Diesel 290 GPH Fuel System For Class 8 Detroit DD15 Engines

    FASS

    $903.99
    290 GPH Fuel System Fits Class 8 Detroit DD15 Engines* High Quality Diesel Fuel System* Aluminum Housing* Fass Air Separation Port Ties Into OEM Engine Fuel Return* Preset 16 PSI Fuel Pressure* 290...
    29-070300006
    SKU:
    29-070300006
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $903.99
    Qty in Cart: 0
    Price:
    $903.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    Rubber Transmission Mount Insulator Replaces 20QL1118A For Mack CH613

    Rubber Transmission Mount Insulator Replaces 20QL1118A For Mack CH613

    AUTOMANN USA

    Now: $5.51
    Was: $7.87
    Replacement Rubber Engine- Transmission MountEnsure your Mack CH613 operates smoothly with the Rubber Transmission Mount Insulator. Constructed from durable rubber, this high-quality mount absorbs...
    11-072500001
    SKU:
    11-072500001
    Truck Class:
    Heavy Duty
    Make:
    Mack
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    Now: $5.51
    Was: $7.87
    Qty in Cart: 0
    Price:
    Now: $5.51
    Was: $7.87
    Subtotal:
  • BESTfit 6 Inch Diameter Quiet Performance Muffler 4 ID / 5 ID X 29 Inch OAL

    BESTfit 6 Inch Diameter Quiet Performance Muffler 4 ID / 5 ID X 29 Inch OAL

    BESTFIT TRUCK PARTS

    $1,064.99
    BESTfit 6 X 29 Inch Aluminized Steel Quiet Performance Muffler W/ 4 Inch Inlet, 5 Inch OutletElevate your driving experience with the BESTfit 6 X 29 Inch Aluminized Steel Quiet Performance Muffler...
    09-080200013
    SKU:
    09-080200013
    Truck Class:
    Universal
    Diameter Options:
    5 Inch
    Length Options:
    29 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $1,064.99
    Qty in Cart: 0
    Price:
    $1,064.99
    Subtotal:
  • BESTfit 6 Inch Diameter Quiet Performance Muffler 4 ID / ID X 29 Inch OAL

    BESTfit 6 Inch Diameter Quiet Performance Muffler 4 ID / ID X 29 Inch OAL

    BESTFIT TRUCK PARTS

    $622.99
    BESTfit 6 X 29 Inch Aluminized Steel Quiet Performance Muffler W/ 4 Inch Inlet/OutletDiscover the ultimate solution for a quieter ride with the BESTfit 6 X 29 Inch Aluminized Steel Quiet Performance...
    09-080200012
    SKU:
    09-080200012
    Diameter Options:
    4 Inch
    Truck Class:
    Universal
    Length Options:
    29 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $622.99
    Qty in Cart: 0
    Price:
    $622.99
    Subtotal:
  • Turbocharger For Cummins ISX Engines - Replaces 4043620

    Turbocharger For Cummins ISX Engines - Replaces 4043620

    AREA DIESEL SERVICE

    $4,636.99
    Replacement 4043620 Turbocharger* High Quality Turbocharger* Aluminum Compressor Housing* Turbine Housing Included* V-Band Compressor Outlet Style* Sold Individually* Warranty On Turbocharger Against...
    09-0704044
    SKU:
    09-0704044
    Truck Class:
    Universal
    Material Options:
    Aluminum
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $4,636.99
    Qty in Cart: 0
    Price:
    $4,636.99
    Subtotal:
  • Turbocharger For N14 Cummins Borg Warner 14.0L BHT3E

    Turbocharger For N14 Cummins Borg Warner 14.0L BHT3E

    AREA DIESEL SERVICE

    $1,679.99
    Borg Warner 14L BHT3E Turbocharger For Cummins N14* High Quality Turbocharger* Replaces OE Number 3531733, 3536095, 3536263, 3537074, 3803585, 3804308, 3804502, 3531267, 3592678, 3592512* Sold...
    09-0704043
    SKU:
    09-0704043
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $1,679.99
    Qty in Cart: 0
    Price:
    $1,679.99
    Subtotal:
  • Borg Warner Turbocharger For Detroit 12.7 60 Series Engine

    Borg Warner Turbocharger For Detroit 12.7 60 Series Engine

    AREA DIESEL SERVICE

    $1,047.99
    Turbocharger Fits 12.7L 60 Series Detroit EngineUpgrade your 12.7 60 Series Detroit-equipped truck with the Airwerks S400SX4 performance turbocharger by Borg Warner. This turbocharger is designed for...
    09-0704041
    SKU:
    09-0704041
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $1,047.99
    Qty in Cart: 0
    Price:
    $1,047.99
    Subtotal:
  • Total: items /

Adding your products to cart

Frequently Asked Questions About Engine & Performance Parts

How do I know if an engine or performance part will fit my truck?

Fitment depends on your truck's make, model, engine family, and year, so it's important to check the compatibility details listed on each product page before ordering. If you're unsure, have your VIN or engine serial number on hand and reach out to our team so we can confirm the part matches your specific setup.

Will installing a performance part affect my truck's warranty or emissions compliance?

Some engine and performance components, especially those related to fuel delivery, exhaust, or emissions systems, can impact manufacturer warranties or federal and state emissions compliance depending on your truck's model year and how it's used. We recommend reviewing manufacturer warranty terms and local regulations before installing any part that alters factory engine settings or emissions output.

Can I install these parts myself, or do I need a professional?

Many parts, such as filters, gaskets, sensors, and belts, are straightforward enough for an experienced DIYer with the right tools. More involved components, like turbochargers, ECM modules, or major engine internals, typically require professional installation to ensure proper calibration and to avoid damage. If a listing includes detailed install instructions or torque specs, that's a good sign the job can be handled in-house; otherwise, we suggest having a qualified diesel technician install it.

What's the difference between OEM and aftermarket performance parts?

OEM parts are made to match your truck's original factory specifications, offering predictable fit and performance. Aftermarket performance parts are often designed to improve on stock capability, whether that's horsepower, fuel efficiency, or durability, but quality and results can vary by brand. We list manufacturer information on each product page so you can compare options and choose what fits your priorities and budget.

How long do engine and performance parts typically last before needing replacement?

Lifespan varies widely depending on the specific part, how the truck is used, and maintenance habits. Wear items like filters and belts need more frequent replacement, while components like turbochargers or sensors can last much longer with proper care. Check the product description for any manufacturer-suggested service intervals, and keep an eye on your truck's performance for early signs that a part may need attention.


Introducing the Official 4 State Trucks Mobile App – Gear Up On the Go!