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International LoneStar DPF & Mufflers

Keep on trucking with an International Lonestar muffler from 4 State Trucks. We carry aftermarket and custom mufflers that can help reduce the noise your engine makes. Shop aftermarket mufflers and related parts at 4 State Trucks.
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  • FREE SHIPPING OVER $249
    9 Inch Diameter Short Galvanized Exhaust Muffler 5 ID / 5 ID X 12 Inch Body Length by BESTfit

    9 Inch Diameter Short Galvanized Exhaust Muffler 5 ID / 5 ID X 12 Inch Body Length by BESTfit

    BESTFIT TRUCK PARTS

    $94.99
    BESTfit 9 x 12 Inch Muffler W/ 5 Inch ID Inlet & OutletTransform your truck's exhaust system with the BESTfit 9 X 12 Inch Short Galvanized Exhaust Muffler, featuring a 5 Inch ID inlet and outlet for...
    09-080201
    SKU:
    09-080201
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Galvanized
    Diameter Options:
    9 Inch
    Length Options:
    12 Inch
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $94.99
    Qty in Cart: 0
    Price:
    $94.99
    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:
  • BESTfit 8 OD X 45 Inch VK Internal Muffler Pipe

    BESTfit 8 OD X 45 Inch VK Internal Muffler Pipe

    BESTFIT TRUCK PARTS

    $696.99
    BESTfit 8 Inch OD X 45 Inch VK Internal Muffler PipeTransform your vehicle's exhaust system with the BESTfit 8 Inch OD X 45 Inch VK Internal Muffler Pipe, the ultimate solution for drivers seeking...
    09-080200011
    SKU:
    09-080200011
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Length Options:
    45 Inch
    Diameter Options:
    8 Inch
    Product Type:
    Exhaust
    $696.99
    Qty in Cart: 0
    Price:
    $696.99
    Subtotal:
  • BESTfit 7 OD X 45 Inch VK Internal Muffler Pipe

    BESTfit 7 OD X 45 Inch VK Internal Muffler Pipe

    BESTFIT TRUCK PARTS

    $867.99
    BESTfit 7 Inch OD X 45 Inch VK Internal Muffler PipeEnhance your truck's exhaust system with the BESTfit 7 Inch OD X 45 Inch VK Internal Muffler Pipe, a solution designed for superior performance...
    09-080200010
    SKU:
    09-080200010
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Diameter Options:
    7 Inch
    Length Options:
    45 Inch
    Product Type:
    Exhaust
    $867.99
    Qty in Cart: 0
    Price:
    $867.99
    Subtotal:
  • BESTfit 6 OD X 45 Inch VK Internal Muffler Pipe

    BESTfit 6 OD X 45 Inch VK Internal Muffler Pipe

    BESTFIT TRUCK PARTS

    $928.99
    BESTfit 6 Inch OD X 45 Inch VK Internal Muffler PipeIntroducing the BESTfit 6 Inch OD X 45 Inch VK Internal Muffler Pipe, the ultimate upgrade for your truck's exhaust system. Constructed from...
    09-080200009
    SKU:
    09-080200009
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Length Options:
    45 Inch
    Diameter Options:
    6 Inch
    Product Type:
    Exhaust
    $928.99
    Qty in Cart: 0
    Price:
    $928.99
    Subtotal:
  • BESTfit 5 OD X 45 Inch VK Internal Muffler Pipe

    BESTfit 5 OD X 45 Inch VK Internal Muffler Pipe

    BESTFIT TRUCK PARTS

    $775.99
    BESTfit 5 Inch OD X 45 Inch VK Internal Muffler PipeElevate your truck's exhaust system with the BESTfit 5 Inch OD X 45 Inch VK Internal Muffler Pipe, an upgrade designed for superior performance and...
    09-080200008
    SKU:
    09-080200008
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Diameter Options:
    5 Inch
    Length Options:
    45 Inch
    Product Type:
    Exhaust
    $775.99
    Qty in Cart: 0
    Price:
    $775.99
    Subtotal:
  • BESTfit 5 OD X 18 Inch Aluminized Internal Muffler / Baffle -16 Gauge

    BESTfit 5 OD X 18 Inch Aluminized Internal Muffler / Baffle -16 Gauge

    BESTFIT TRUCK PARTS

    $79.99
    BESTfit Type 1 A 16 Gauge Aluminized Steel Internal MufflerThis high-performance internal muffler is designed for 36-inch straight stacks, fitting into the bottom for efficient operation on older...
    09-080200006
    SKU:
    09-080200006
    Diameter Options:
    5 Inch
    Truck Class:
    Universal
    Length Options:
    18 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $79.99
    Qty in Cart: 0
    Price:
    $79.99
    Subtotal:
  • BESTfit 4 X 18 Inch Aluminized Steel Internal Muffler 16 Gauge

    BESTfit 4 X 18 Inch Aluminized Steel Internal Muffler 16 Gauge

    BESTFIT TRUCK PARTS

    $66.99
    BESTfit Internal Exhaust Baffle TubeExperience the superior quality of the BESTfit 4 X 18 Inch 16 Gauge Aluminized Steel Internal Muffler from 4 State Trucks. This premium internal muffler, made from...
    09-080200005
    SKU:
    09-080200005
    Truck Class:
    Universal
    Diameter Options:
    4 Inch
    Length Options:
    18 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $66.99
    Qty in Cart: 0
    Price:
    $66.99
    Subtotal:
  • BESTfit 8 Inch Diameter Powerflow Muffler Type 1 4 ID / ID X 21 Inch OAL

    BESTfit 8 Inch Diameter Powerflow Muffler Type 1 4 ID / ID X 21 Inch OAL

    BESTFIT TRUCK PARTS

    $181.99
    BESTfit 4 Inch In/Out X 8 X 21 Inch Aluminized Steel Type 1 MufflerDiscover the superior performance of the BESTfit 4 Inch In/Out X 8 X 21 Inch Aluminized Steel Type 1 Muffler, designed for those who...
    09-080200004
    SKU:
    09-080200004
    Truck Class:
    Universal
    Diameter Options:
    4 Inch
    Length Options:
    21 1/2 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $181.99
    Qty in Cart: 0
    Price:
    $181.99
    Subtotal:
  • BESTfit 8 Inch Diameter Muffler Type 1 4 ID / 5 ID X 21 Inch OAL

    BESTfit 8 Inch Diameter Muffler Type 1 4 ID / 5 ID X 21 Inch OAL

    BESTFIT TRUCK PARTS

    $145.99
    BESTfit 4 Inch In X 5 Inch Out X 8 X 21 Inch Aluminized Steel Type 1 MufflerBoost your truck's exhaust performance with the BESTfit 4 Inch In X 5 Inch Out X 8 X 21 Inch Aluminized Steel Type 1...
    09-080200003
    SKU:
    09-080200003
    Diameter Options:
    5 Inch
    Truck Class:
    Universal
    Length Options:
    21 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Style Options:
    Angled
    Product Type:
    Exhaust
    $145.99
    Qty in Cart: 0
    Price:
    $145.99
    Subtotal:
  • 10 Inch Diameter Performance Muffler 6 ID / 6 ID X 51.5 Inch OAL

    10 Inch Diameter Performance Muffler 6 ID / 6 ID X 51.5 Inch OAL

    PITTSBURGH POWER

    $305.99
    High Performance Muffler Increases Horsepower, Mileage & Reduces Back PressureThe Performance Muffler, measuring 10 inches by 51.5 inches and featuring a 6-inch inlet and outlet, is designed to...
    09-080200001
    SKU:
    09-080200001
    Diameter Options:
    6 Inch
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Length Options:
    51 1/2 Inch
    Product Type:
    Exhaust
    $305.99
    Qty in Cart: 0
    Price:
    $305.99
    Subtotal:
  • BESTfit 10 Inch Diameter High Flow Muffler Type 1 51 Inch OAL

    BESTfit 10 Inch Diameter High Flow Muffler Type 1 51 Inch OAL

    BESTFIT TRUCK PARTS

    $534.99
    10 Inch Diameter Replacement MufflerThis high flow replacement muffler works with all engines and is designed to replace 10-inch diameter stock mufflers. It runs as quietly as your stock muffler...
    09-080200
    SKU:
    09-080200
    Truck Class:
    Universal
    Diameter Options:
    5 Inch
    Make:
    Universal Items
    Product Type:
    Exhaust
    Length Options:
    44 1/2 Inch
    Material Options:
    Aluminized Steel
    Ready To Ship:
    Yes
    $534.99
    Qty in Cart: 0
    Price:
    $534.99
    Subtotal:
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Adding your products to cart

Explore our International LoneStar DPF & Mufflers product lineup, which offers a variety of replacement parts to maintain your truck's performance and emissions compliance. This includes stainless steel DPFs and aluminized steel mufflers, available in different sizes for optimal performance. These high-quality components ensure your International LoneStar runs smoothly, reducing noise and maintaining efficiency. Whether you need a new DPF, muffler, or exhaust accessories, you'll find everything here to keep your truck on the road.

Frequently Asked Questions About International LoneStar DPF & Mufflers

Will a replacement DPF or muffler for the International LoneStar fit my specific truck?

Fitment can vary depending on the model year and engine configuration of your LoneStar, as well as the specific emissions system installed at the factory. Always check the part description for compatible year ranges and engine types, and compare measurements or OEM part numbers to your existing unit before ordering. If you are unsure, our team can help confirm fitment before you buy.

Are these DPF and muffler units DOT and EPA compliant?

DPF components and exhaust systems for the LoneStar are designed to work within the emissions standards the truck was originally built to meet. Replacing these parts with anything other than an equivalent, properly rated component can affect your truck's emissions compliance, so it's important to match the replacement to your original system specifications.

What material and finish options are available for these mufflers?

Mufflers in this category are typically available in aluminized or stainless steel construction. Stainless steel offers better long-term resistance to rust and heat cycling, while aluminized steel is generally a more budget-friendly option. The right choice depends on your operating conditions and how long you plan to keep the truck on the road.

How difficult is it to install a replacement DPF or muffler myself?

Muffler replacement is often manageable for someone comfortable with basic exhaust work and the right tools, though proper clamps, gaskets, and hangers are important for a secure fit. DPF replacement or service is more involved, since it ties into the truck's emissions and aftertreatment system, so many owners choose to have this done by a qualified diesel technician to avoid fault codes or performance issues.

How do I know if my DPF needs to be replaced versus cleaned?

A DPF that is triggering frequent regeneration cycles, showing restriction warning lights, or has visible cracks or damage after cleaning may need replacement rather than continued servicing. Regular cleaning on a normal maintenance schedule can extend the life of your DPF, but a technician can help determine whether cleaning or replacement is the better option for your specific unit.


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