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Chrome Rush countdown – 14% off semi truck parts and chrome accessories at 4 State Trucks
Chrome Rush countdown – 14% off semi truck parts and chrome accessories at 4 State Trucks

Mack RD Truck Exhaust Parts

Are you looking to improve your Mack RD truck? 4 State Trucks has you covered with a high-quality collection of exhaust stacks, clamps, elbows, and mufflers. Explore options with lengths up to 120 inches, diameters from 4 to 8 inches, and a variety of top styles like miter cut and bull hauler.
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • BESTfit Aluminized Exhaust Connector 3-1/2 OD X 3-1/2 OD X 8 Inch

    BESTfit Aluminized Exhaust Connector 3-1/2 OD X 3-1/2 OD X 8 Inch

    BESTFIT TRUCK PARTS

    $34.63
    BESTfit 3.5 Inch O.D.-O.D. X 8 Inch OAL Aluminized Steel Connector* High Quality Connector* Can Be Used To Join Flex Hose Together* Both Ends Have O.D. Connections* Made Of Durable 16 Gauge...
    09-080100181
    SKU:
    09-080100181
    Truck Class:
    Universal
    Diameter Options:
    8 Inch
    Length Options:
    3 1/2 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $34.63
    Qty in Cart: 0
    Price:
    $34.63
    Subtotal:
  • BESTfit Aluminized Exhaust Reducer 6 OD X 5 OD X 8 Inch

    BESTfit Aluminized Exhaust Reducer 6 OD X 5 OD X 8 Inch

    BESTFIT TRUCK PARTS

    $40.26
    BESTfit To 5 Inch OD-OD X 8 Inch OAL Aluminized Steel Reducer PipeAre you building a custom exhaust that requires different pipe sizes? 4 State Trucks offers this high quality reducer that is made to...
    09-080100170
    SKU:
    09-080100170
    Truck Class:
    Universal
    Diameter Options:
    6 Inch
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $40.26
    Qty in Cart: 0
    Price:
    $40.26
    Subtotal:
  • BESTfit Chrome Exhaust Adapter Reducer 6 OD X 5 ID X 8 Inch

    BESTfit Chrome Exhaust Adapter Reducer 6 OD X 5 ID X 8 Inch

    BESTFIT TRUCK PARTS

    $106.99
    BESTfit 6 To 5 Inch O.D.-I.D. X 8 Inch OAL Chrome-Plated Steel Reducer PipeDoes your exhaust build have different size pipes? 4 State Trucks offers this high quality reducer that allows pipes of...
    09-080100169
    SKU:
    09-080100169
    Diameter Options:
    6 Inch
    Truck Class:
    Universal
    Length Options:
    8 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Exhaust
    $106.99
    Qty in Cart: 0
    Price:
    $106.99
    Subtotal:
  • BESTfit Aluminized Exhaust Adapter Reducer 6 OD X 5 ID X 8 Inch

    BESTfit Aluminized Exhaust Adapter Reducer 6 OD X 5 ID X 8 Inch

    BESTFIT TRUCK PARTS

    $45.59
    BESTfit 6 To 5 Inch O.D.-I.D. X 8 Inch OAL Aluminized Steel Reducer PipeAre you building a custom exhaust that requires different pipe sizes? 4 State Trucks offers this high quality reducer that is...
    09-080100168
    SKU:
    09-080100168
    Diameter Options:
    6 Inch
    Truck Class:
    Universal
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $45.59
    Qty in Cart: 0
    Price:
    $45.59
    Subtotal:
  • BESTfit Aluminized Exhaust Adapter Reducer 6 OD X 4 OD X 8 Inch

    BESTfit Aluminized Exhaust Adapter Reducer 6 OD X 4 OD X 8 Inch

    BESTFIT TRUCK PARTS

    $53.99
    BESTfit 6 To 4 Inch O.D.-O.D. X 8 Inch OAL Aluminized Steel Reducer Pipehigh quality reducer that is made to smoothly connect pipes of different size on your exhaust. It is constructed with a premium...
    09-080100167
    SKU:
    09-080100167
    Truck Class:
    Universal
    Diameter Options:
    6 Inch
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $53.99
    Qty in Cart: 0
    Price:
    $53.99
    Subtotal:
  • BESTfit Chrome Exhaust Adapter Reducer 6 ID X 5 OD X 8 Inch

    BESTfit Chrome Exhaust Adapter Reducer 6 ID X 5 OD X 8 Inch

    BESTFIT TRUCK PARTS

    $106.99
    BESTfit 6 To 5 Inch I.D.-O.D. X 8 Inch OAL Chrome-Plated Steel Reducer PipeIf you are looking to connect two different sized exhaust pipes, 4 State Trucks offers this high quality reducer that keeps...
    09-080100166
    SKU:
    09-080100166
    Truck Class:
    Universal
    Diameter Options:
    6 Inch
    Length Options:
    8 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $106.99
    Qty in Cart: 0
    Price:
    $106.99
    Subtotal:
  • BESTfit Aluminized Exhaust Adapter Reducer 6 ID X 5 ID X 8 Inch

    BESTfit Aluminized Exhaust Adapter Reducer 6 ID X 5 ID X 8 Inch

    BESTFIT TRUCK PARTS

    $45.59
    BESTfit 6 To 5 Inch I.D.-I.D. X 8 Inch OAL Aluminized Steel Reducer PipeDo you have an exhaust build that is designed with different pipe sizes? 4 State Trucks offers the high quality reducer that...
    09-080100165
    SKU:
    09-080100165
    Diameter Options:
    6 Inch
    Truck Class:
    Universal
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $45.59
    Qty in Cart: 0
    Price:
    $45.59
    Subtotal:
  • BESTfit Aluminized Exhaust Adapter Reducer 6 ID X 4 OD X 8 Inch

    BESTfit Aluminized Exhaust Adapter Reducer 6 ID X 4 OD X 8 Inch

    BESTFIT TRUCK PARTS

    $88.99
    BESTfit 6 To 4 Inch I.D.-O.D. X 8 Inch OAL Aluminized Steel Reducer PipeAre you building a custom exhaust that requires different pipe sizes? 4 State Trucks offers this high quality reducer that is...
    09-080100164
    SKU:
    09-080100164
    Diameter Options:
    6 Inch
    Truck Class:
    Universal
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $88.99
    Qty in Cart: 0
    Price:
    $88.99
    Subtotal:
  • BESTfit Aluminized Exhaust Adapter Reducer 6 ID X 4 ID X 8 Inch

    BESTfit Aluminized Exhaust Adapter Reducer 6 ID X 4 ID X 8 Inch

    BESTFIT TRUCK PARTS

    $70.99
    BESTfit 6 To 4 Inch I.D.-I.D. X 8 Inch OAL Aluminized Steel Reducer PipeAre you building a custom exhaust that requires different pipe sizes? 4 State Trucks offers this high quality reducer to...
    09-080100163
    SKU:
    09-080100163
    Truck Class:
    Universal
    Diameter Options:
    6 Inch
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $70.99
    Qty in Cart: 0
    Price:
    $70.99
    Subtotal:
  • BESTfit Aluminized Exhaust Adapter Reducer 5 OD X 4 OD X 8 Inch

    BESTfit Aluminized Exhaust Adapter Reducer 5 OD X 4 OD X 8 Inch

    BESTFIT TRUCK PARTS

    $45.60
    BESTfit 5 To 4 Inch O.D.-O.D. X 8 Inch OAL Aluminized Steel Reducer PipeAre you building a custom exhaust that requires different pipe sizes? 4 State Trucks offers this high quality reducer to...
    09-080100162
    SKU:
    09-080100162
    Truck Class:
    Universal
    Diameter Options:
    5 Inch
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $45.60
    Qty in Cart: 0
    Price:
    $45.60
    Subtotal:
  • BESTfit Aluminized Exhaust Reducer 5 OD X 4 ID X 8 Inch

    BESTfit Aluminized Exhaust Reducer 5 OD X 4 ID X 8 Inch

    BESTFIT TRUCK PARTS

    $29.99
    5 To 4 Inch OD-ID X 8 Inch OAL Aluminized Steel Reducer PipeAre you building a custom exhaust that requires different pipe sizes? 4 State Trucks offers this high quality reducer that is made to last...
    09-080100161
    SKU:
    09-080100161
    Diameter Options:
    5 Inch
    Truck Class:
    Universal
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $29.99
    Qty in Cart: 0
    Price:
    $29.99
    Subtotal:
  • BESTfit Aluminized Exhaust Adapter Reducer 5 ID X 4 OD X 8 Inch

    BESTfit Aluminized Exhaust Adapter Reducer 5 ID X 4 OD X 8 Inch

    BESTFIT TRUCK PARTS

    $42.43
    BESTfit 5 To 4 Inch I.D.-O.D. X 8 Inch OAL Aluminized Steel Reducer PipeDo you want to ensure your pipe connections fit perfectly and look great? 4 State Trucks high quality reducer that will...
    09-080100160
    SKU:
    09-080100160
    Diameter Options:
    5 Inch
    Truck Class:
    Universal
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $42.43
    Qty in Cart: 0
    Price:
    $42.43
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Aluminized Exhaust Reducer 5 ID X 4 ID X 8 Inch

    BESTfit Aluminized Exhaust Reducer 5 ID X 4 ID X 8 Inch

    BESTFIT TRUCK PARTS

    $34.84
    BESTfit 5 To 4 Inch ID-ID X 8 Inch OAL Aluminized Steel Reducer PipeAre you looking for a reducer to ensure your exhaust pipes fit perfectly? 4 State Trucks offers this high quality reducer that will...
    09-080100159
    SKU:
    09-080100159
    Truck Class:
    Universal
    Diameter Options:
    5 Inch
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    $34.84
    Qty in Cart: 0
    Price:
    $34.84
    Subtotal:
  • BESTfit Aluminized Exhaust Adapter Reducer 4 OD X 3 OD X 8 Inch

    BESTfit Aluminized Exhaust Adapter Reducer 4 OD X 3 OD X 8 Inch

    BESTFIT TRUCK PARTS

    $21.74
    BESTfit 4 To 3 Inch O.D.-O.D. X 8 Inch OAL Aluminized Steel Reducer Pipe4 State Trucks offers this high quality reducer that will securely connect two different sized pipes on an exhaust with ease...
    09-080100158
    SKU:
    09-080100158
    Truck Class:
    Universal
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Diameter Options:
    4 Inch
    Length Options:
    8 Inch
    Product Type:
    Exhaust
    $21.74
    Qty in Cart: 0
    Price:
    $21.74
    Subtotal:
  • BESTfit Aluminized Exhaust Reducer 4 OD X 3 ID X 6 Inch

    BESTfit Aluminized Exhaust Reducer 4 OD X 3 ID X 6 Inch

    BESTFIT TRUCK PARTS

    $22.04
    BESTfit 4 To 3 Inch OD-ID X 6 Inch OAL Aluminized Steel Reducer PipeSupport proper exhaust routing with this BESTfit aluminized steel exhaust reducer built for dependable performance in demanding...
    09-080100157
    SKU:
    09-080100157
    Diameter Options:
    4 Inch
    Truck Class:
    Universal
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $22.04
    Qty in Cart: 0
    Price:
    $22.04
    Subtotal:
  • BESTfit Aluminized Exhaust Adapter Reducer 4 OD X 3-1/2 OD X 8 Inch

    BESTfit Aluminized Exhaust Adapter Reducer 4 OD X 3-1/2 OD X 8 Inch

    BESTFIT TRUCK PARTS

    $26.71
    BESTfit 4 To 3.5 Inch O.D.-O.D. X 8 Inch OAL Aluminized Steel Reducer PipeTransform your exhaust's appearance with the BESTfit 4 to 3.5 Inch OD-OD Aluminized Steel Reducer Pipe. Offering a precise...
    09-080100156
    SKU:
    09-080100156
    Diameter Options:
    4 Inch
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    $26.71
    Qty in Cart: 0
    Price:
    $26.71
    Subtotal:
  • BESTfit Aluminized Exhaust Reducer 4 OD X 3-1/2 ID X 8 Inch

    BESTfit Aluminized Exhaust Reducer 4 OD X 3-1/2 ID X 8 Inch

    BESTFIT TRUCK PARTS

    $24.93
    BESTfit 4 To 3.5 Inch OD-ID X 8 Inch OAL Aluminized Steel Reducer PipeUpgrade your exhaust system with our Aluminized Exhaust Reducer, designed to transition from a 4-inch OD to a 3.5-inch ID over an...
    09-080100155
    SKU:
    09-080100155
    Diameter Options:
    4 Inch
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    $24.93
    Qty in Cart: 0
    Price:
    $24.93
    Subtotal:
  • BESTfit Aluminized Exhaust Adapter Reducer 4 ID X 3 OD X 8 Inch

    BESTfit Aluminized Exhaust Adapter Reducer 4 ID X 3 OD X 8 Inch

    BESTFIT TRUCK PARTS

    $30.75
    BESTfit 4 To 3 Inch O.D.-O.D. X 8 Inch OAL Aluminized Steel Reducer PipeAre you building a custom exhaust that requires different pipe sizes? 4 State Trucks offers this high quality reducer to...
    09-080100154
    SKU:
    09-080100154
    Diameter Options:
    4 Inch
    Truck Class:
    Universal
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Product Type:
    Exhaust
    $30.75
    Qty in Cart: 0
    Price:
    $30.75
    Subtotal:
  • BESTfit Aluminized Exhaust Adapter Reducer 4 ID X 3-1/2 OD X 8 Inch

    BESTfit Aluminized Exhaust Adapter Reducer 4 ID X 3-1/2 OD X 8 Inch

    BESTFIT TRUCK PARTS

    $30.75
    BESTfit 4 To 3.5 Inch ID-OD X 8 Inch OAL Aluminized Steel Reducer PipeIntroducing the BESTfit Aluminized Exhaust Reducer, expertly designed to connect a 4-inch ID to a 3.5-inch OD over an 8-inch...
    09-080100153
    SKU:
    09-080100153
    Diameter Options:
    4 Inch
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    $30.75
    Qty in Cart: 0
    Price:
    $30.75
    Subtotal:
  • BESTfit Aluminized Exhaust Adapter Reducer 4 ID X 3-1/2 ID X 8 Inch

    BESTfit Aluminized Exhaust Adapter Reducer 4 ID X 3-1/2 ID X 8 Inch

    BESTFIT TRUCK PARTS

    $32.89
    BESTfit 4 To 3.5 Inch ID-ID X 8 Inch OAL Aluminized Steel Reducer PipeAchieve a great fit for your exhaust with the BESTfit 4 to 3.5 Inch ID-ID Aluminized Steel Reducer Pipe. This 8-inch-long reducer...
    09-080100152
    SKU:
    09-080100152
    Diameter Options:
    4 Inch
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Exhaust
    $32.89
    Qty in Cart: 0
    Price:
    $32.89
    Subtotal:
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Shop for Aftermarket Exhaust Parts for the Mack RD Truck Model. Add a custom, unique look to your medium-duty work truck with exhaust parts and components. Our product lineup features parts like mufflers, clamps, brackets, and connectors, all designed to provide you with a reliable exhaust system. If you're looking to add some resale value to your Mack RD truck, or you just need a replacement part for a worn-out OEM component, you find what you're looking for here. Some of the benefits of enhancing your Mack RD's exhaust system are reduced noise, lower toxic emissions, and overall enhanced performance.

Frequently Asked Questions About Mack RD Truck Exhaust Parts

What types of exhaust components are available for the Mack RD?

This category typically includes components such as exhaust stacks, elbows, clamps, mufflers, heat shields, and mounting brackets designed to fit the Mack RD series. Depending on availability, you may find both stock replacement pieces and aftermarket styling options like chrome or stainless steel stacks.

Will these exhaust parts fit my specific Mack RD model year?

Mack RD trucks were produced over a long span of years, and exhaust system configurations can vary based on engine type, cab configuration, and factory setup. Always check the fitment details listed on each product page, and compare diameters, lengths, and mounting patterns to your existing exhaust components before ordering. If you are unsure, contacting our support team with your VIN or engine details can help confirm compatibility.

What materials and finishes are these exhaust parts made from?

Exhaust parts in this category are commonly made from aluminized steel or stainless steel, offering good resistance to heat and corrosion. Stainless steel options generally provide a longer-lasting shine and better rust resistance, while aluminized steel is a more budget-friendly choice that still holds up well under normal operating conditions.

Do I need any special tools or professional help to install these parts?

Basic exhaust components like clamps and straight pipe sections can often be installed with common hand tools, but more involved parts such as full stack replacements or muffler assemblies may require cutting, welding, or professional alignment to ensure a proper seal and fit. If you are not experienced with exhaust work, having a qualified diesel technician handle the installation is recommended to avoid leaks or improper fitment.

Are these exhaust parts compliant with emissions and noise regulations?

Regulations for exhaust systems can vary by state and application, particularly regarding noise output and emissions equipment. It is the buyer's responsibility to verify that any replacement or aftermarket exhaust component meets the applicable regulations in their operating area, especially if the truck is used commercially or crosses state lines.

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