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Mack RD Trucks

Shop for aftermarket Mack RD truck parts (1979 – 2004) to repair, replace, and refurbish your heavy-duty vocational rig. We sell replacement and aftermarket parts for popular Mack RD models, including the RD600, RD688, RD688S, RD690, and RD690S. Source collision-replacement parts, customize the exterior, or add interior cab accessories to refurbish your truck at 4 State Trucks.
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • BESTfit DPF For Cummins ISL Engine Replaces 6392135, 7700658, C062SA

    BESTfit DPF For Cummins ISL Engine Replaces 6392135, 7700658, C062SA

    BESTFIT TRUCK PARTS

    $1,682.99
    Diesel Particulate Filter By BESTfit Replaces 6392135, 7700658, C062SA Fits Cummins ISL EngineBuilt for durability and performance, the BESTfit Cummins ISL Diesel Particulate Filter (DPF) replaces...
    29-08090043
    SKU:
    29-08090043
    Product Type:
    Exhaust
    Style Options:
    Cummins
    Make:
    Universal Items
    $1,682.99
    Qty in Cart: 0
    Price:
    $1,682.99
    Subtotal:
  • BESTfit Detroit Diesel DPF For Detroit DD13/DD15 Engines Replaces 52967, 7700656, C029SA

    BESTfit Detroit Diesel DPF For Detroit DD13/DD15 Engines Replaces 52967, 7700656, C029SA

    BESTFIT TRUCK PARTS

    $3,219.99
    Diesel Diesel Particulate Filter By BESTfit Replaces 52967, 7700656, C029SA Fits Detroit DD13/DD15 EnginesBuilt for performance and durability, the BESTfit Detroit Diesel DPF replaces OEM part...
    29-08090036
    SKU:
    29-08090036
    Style Options:
    Detroit
    Product Type:
    Exhaust
    Make:
    Universal Items
    $3,219.99
    Qty in Cart: 0
    Price:
    $3,219.99
    Subtotal:
  • BESTfit Cummins DOC For Cummins ISX Engine Replaces 2606971, 4936734NX, 58017

    BESTfit Cummins DOC For Cummins ISX Engine Replaces 2606971, 4936734NX, 58017

    BESTFIT TRUCK PARTS

    $2,294.99
    Cummins Diesel Oxidation Catalyst By BESTfit Replaces 2606971, 4936734NX, 58017 Fits Cummins ISX EngineBuilt for durability and performance, the BESTfit Cummins ISX Diesel Oxidation Catalyst (DOC)...
    29-08090046
    SKU:
    29-08090046
    Style Options:
    Cummins
    Product Type:
    Exhaust
    Make:
    Universal Items
    $2,294.99
    Qty in Cart: 0
    Price:
    $2,294.99
    Subtotal:
  • BESTfit Detroit Diesel Doser Injector For Detroit DD13 & DD15 Replaces 0281006099, 2121300016, A4720700746

    BESTfit Detroit Diesel Doser Injector For Detroit DD13 & DD15 Replaces 0281006099, 2121300016, A4720700746

    BESTFIT TRUCK PARTS

    $97.99
    Diesel Doser Injector By BESTfit Replaces 0281006099, 2121300016, A4720700746 Fits Detroit DD13 & DD15Built for performance and precision, the BESTfit Detroit Diesel Doser Injector replaces OEM part...
    29-08090045
    SKU:
    29-08090045
    Product Type:
    Exhaust
    Style Options:
    Detroit
    Make:
    Universal Items
    $97.99
    Qty in Cart: 0
    Price:
    $97.99
    Subtotal:
  • BESTfit Cummins NOx Sensor For Cummins Replaces 22033, 5462436RX

    BESTfit Cummins NOx Sensor For Cummins Replaces 22033, 5462436RX

    BESTFIT TRUCK PARTS

    $390.99
    Cummins NOx Sensor By BESTfit Replaces 22033, 5462436RXBuilt for accuracy and reliability, the BESTfit Cummins NOx Sensor replaces OEM part numbers 22033 and 5462436RX for Cummins applications. This...
    29-08090039
    SKU:
    29-08090039
    Style Options:
    Cummins
    Product Type:
    Exhaust
    Make:
    Universal Items
    $390.99
    Qty in Cart: 0
    Price:
    $390.99
    Subtotal:
  • BESTfit Cummins DOC For Cummins ISC/ISL Engines Replaces Q629359, GESI544, 2880512RX

    BESTfit Cummins DOC For Cummins ISC/ISL Engines Replaces Q629359, GESI544, 2880512RX

    BESTFIT TRUCK PARTS

    $2,431.99
    Diesel Oxidation Catalyst By BESTfit Replaces Q629359, GESI544, 2880512RX Fits Cummins ISC/ISL EnginesBuilt for performance and durability, the BESTfit Cummins ISC/ISL Diesel Oxidation Catalyst (DOC)...
    29-08090032
    SKU:
    29-08090032
    Style Options:
    Cummins
    Product Type:
    Exhaust
    Make:
    Universal Items
    $2,431.99
    Qty in Cart: 0
    Price:
    $2,431.99
    Subtotal:
  • BESTfit Detroit Diesel 1-Box Assembly For Detroit DD13 & DD15 Engines Replaces A6804903556, EA0004900736, 35017

    BESTfit Detroit Diesel 1-Box Assembly For Detroit DD13 & DD15 Engines Replaces A6804903556, EA0004900736, 35017

    BESTFIT TRUCK PARTS

    $9,110.99
    Diesel 1-Box Assembly By BESTfit Replaces A6804903556, EA0004900736, 35017 Fits Detroit DD13 & DD15 EnginesBuilt for durability and performance, the BESTfit Detroit Diesel 1-Box Emissions Assembly...
    29-08090035
    SKU:
    29-08090035
    Product Type:
    Exhaust
    Style Options:
    Detroit
    Make:
    Universal Items
    $9,110.99
    Qty in Cart: 0
    Price:
    $9,110.99
    Subtotal:
  • BESTfit Cummins DPF For Cummins ISB/Paccar PX6 Replaces 2060750023, 58005RX, C170058

    BESTfit Cummins DPF For Cummins ISB/Paccar PX6 Replaces 2060750023, 58005RX, C170058

    BESTFIT TRUCK PARTS

    $1,335.99
    Diesel Particulate Filter By BESTfit Replaces 2060750023, 58005RX, C170058 Fits Cummins ISB/Paccar PX6Built for performance and durability, the BESTfit Cummins ISB/Paccar PX6 Diesel Particulate...
    29-08090028
    SKU:
    29-08090028
    Style Options:
    Paccar
    Product Type:
    Exhaust
    Make:
    Universal Items
    $1,335.99
    Qty in Cart: 0
    Price:
    $1,335.99
    Subtotal:
  • BESTfit Cummins DOC For Cummins ISL Engines Replaces 319371, 472001, 6359405

    BESTfit Cummins DOC For Cummins ISL Engines Replaces 319371, 472001, 6359405

    BESTFIT TRUCK PARTS

    $2,170.99
    Diesel Oxidation Catalyst By BESTfit Replaces 319371, 472001, 6359405 Fits Cummins ISL EnginesBuilt for durability and efficiency, the BESTfit Cummins ISL Diesel Oxidation Catalyst (DOC) replaces OEM...
    29-08090031
    SKU:
    29-08090031
    Product Type:
    Exhaust
    Style Options:
    Cummins
    Make:
    Universal Items
    $2,170.99
    Qty in Cart: 0
    Price:
    $2,170.99
    Subtotal:
  • BESTfit Cummins NOx Sensor For Cummins Replaces 2120751016, 4326862, A044C659

    BESTfit Cummins NOx Sensor For Cummins Replaces 2120751016, 4326862, A044C659

    BESTFIT TRUCK PARTS

    $390.99
    NOx Sensor By BESTfit Replaces 2120751016, 4326862, A044C659 Fits CumminsBuilt for precision and reliability, the BESTfit Cummins NOx Sensor replaces OEM part numbers 2120751016, 4326862, and...
    29-08090034
    SKU:
    29-08090034
    Style Options:
    Cummins
    Product Type:
    Exhaust
    Make:
    Universal Items
    $390.99
    Qty in Cart: 0
    Price:
    $390.99
    Subtotal:
  • BESTfit Cummins NOx Sensor For Cummins Replaces 2894944, 5EL007, 5WK96691A

    BESTfit Cummins NOx Sensor For Cummins Replaces 2894944, 5EL007, 5WK96691A

    BESTFIT TRUCK PARTS

    $390.99
    NOx Sensor By BESTfit Replaces 2894944, 5EL007, 5WK96691A Fits CumminsBuilt for reliability and accuracy, the BESTfit Cummins NOx Sensor replaces OEM part numbers 2894944, 5EL007, and 5WK96691A for...
    29-08090033
    SKU:
    29-08090033
    Product Type:
    Exhaust
    Style Options:
    Cummins
    Make:
    Universal Items
    $390.99
    Qty in Cart: 0
    Price:
    $390.99
    Subtotal:
  • BESTfit Detroit Diesel 1-Box Assembly For Detroit DD13 & DD15 Engines Replaces 2140200002, 35035, C0305FL

    BESTfit Detroit Diesel 1-Box Assembly For Detroit DD13 & DD15 Engines Replaces 2140200002, 35035, C0305FL

    BESTFIT TRUCK PARTS

    $11,388.65
    Detroit Diesel 1-Box Assembly By BESTfit Replaces 2140200002, 35035, C0305FL Fits Detroit DD13 & DD15 EnginesBuilt for performance and durability, the BESTfit Detroit Diesel 1-Box Emissions Assembly...
    29-08090029
    SKU:
    29-08090029
    Style Options:
    Detroit
    Product Type:
    Exhaust
    Make:
    Universal Items
    $11,388.65
    Qty in Cart: 0
    Price:
    $11,388.65
    Subtotal:
  • BESTfit Cummins DPF Gasket For Cummins Replaces 4966441, G02005, KPI50098G

    BESTfit Cummins DPF Gasket For Cummins Replaces 4966441, G02005, KPI50098G

    BESTFIT TRUCK PARTS

    $14.99
    Diesel Particulate Filter Gasket By BESTfit Replaces 4966441, G02005, KPI50098G Fits CumminsBuilt for durability and performance, the BESTfit Cummins DPF Gasket replaces OEM part numbers 4966441,...
    29-08090023
    SKU:
    29-08090023
    Product Type:
    Exhaust
    Style Options:
    Cummins
    Make:
    Universal Items
    $14.99
    Qty in Cart: 0
    Price:
    $14.99
    Subtotal:
  • BESTfit Cummins NOx Sensor For Cummins ISB 6.7L & ISX 15.0 Engines Replaces 0451108, 5EL002, 6398823R

    BESTfit Cummins NOx Sensor For Cummins ISB 6.7L & ISX 15.0 Engines Replaces 0451108, 5EL002, 6398823R

    BESTFIT TRUCK PARTS

    $390.99
    NOx Sensor By BESTfit Replaces 0451108, 5EL002, 6398823R Fits CumminsBuilt for reliability and precision, the BESTfit Cummins NOx Sensor provides essential emissions monitoring for Cummins ISB 6.7L...
    29-08090016
    SKU:
    29-08090016
    Style Options:
    Cummins
    Product Type:
    Exhaust
    Make:
    Universal Items
    $390.99
    Qty in Cart: 0
    Price:
    $390.99
    Subtotal:
  • BESTfit Detroit Diesel NOx Sensor For Detroit DD13 & DD15 Engines Replaces A0101532228, EA0101532228, S11228

    BESTfit Detroit Diesel NOx Sensor For Detroit DD13 & DD15 Engines Replaces A0101532228, EA0101532228, S11228

    BESTFIT TRUCK PARTS

    $390.99
    Diesel NOx Sensor By BESTfit Replaces A0101532228, EA0101532228, S11228 Fits Detroit DD13 & DD15 EnginesBuilt for reliable emissions control, the BESTfit Detroit Diesel NOx Sensor delivers accurate...
    29-08090026
    SKU:
    29-08090026
    Product Type:
    Exhaust
    Style Options:
    Detroit
    Make:
    Universal Items
    $390.99
    Qty in Cart: 0
    Price:
    $390.99
    Subtotal:
  • BESTfit Cummins DPF For Cummins ISX Engine Replaces 5283283, 58031, A064C010

    BESTfit Cummins DPF For Cummins ISX Engine Replaces 5283283, 58031, A064C010

    BESTFIT TRUCK PARTS

    $1,969.99
    Diesel Particulate Filter By BESTfit Replaces 5283283, 58031, A064C010 Fits Cummins ISX EngineBuilt for strength and reliability, the BESTfit Cummins ISX DPF delivers efficient emissions filtration...
    29-08090019
    SKU:
    29-08090019
    Style Options:
    Cummins
    Product Type:
    Exhaust
    Make:
    Universal Items
    $1,969.99
    Qty in Cart: 0
    Price:
    $1,969.99
    Subtotal:
  • BESTfit Cummins NOx Sensor For Cummins Replaces 1953530, 4326476NX, A045S162

    BESTfit Cummins NOx Sensor For Cummins Replaces 1953530, 4326476NX, A045S162

    BESTFIT TRUCK PARTS

    $359.99
    NOx Sensor By BESTfit Replaces 1953530, 4326476NX, A045S162 Fits CumminsBuilt for accuracy and durability, the BESTfit Cummins NOx Sensor replaces OEM part numbers 1953530, 4326476NX, and A045S162...
    29-08090021
    SKU:
    29-08090021
    Style Options:
    Cummins
    Product Type:
    Exhaust
    Make:
    Universal Items
    $359.99
    Qty in Cart: 0
    Price:
    $359.99
    Subtotal:
  • BESTfit Cummins Clamp For Cummins Replaces 4026975C1, 58830, SCE0524R9B1

    BESTfit Cummins Clamp For Cummins Replaces 4026975C1, 58830, SCE0524R9B1

    BESTFIT TRUCK PARTS

    $27.99
    Clamp By BESTfit Replaces 4026975C1, 58830, SCE0524R9B1 Fits CumminsDesigned for strength and reliability, the BESTfit Cummins Exhaust Clamp replaces OEM part numbers 4026975C1, 58830, and...
    29-08090015
    SKU:
    29-08090015
    Style Options:
    Cummins
    Product Type:
    Exhaust
    Make:
    Universal Items
    $27.99
    Qty in Cart: 0
    Price:
    $27.99
    Subtotal:
  • BESTfit Cummins DPF For Cummins ISC/Paccar PX8 Engines Replaces 2060750064, 4965286, A064B981

    BESTfit Cummins DPF For Cummins ISC/Paccar PX8 Engines Replaces 2060750064, 4965286, A064B981

    BESTFIT TRUCK PARTS

    $1,535.99
    Diesel Particulate Filter By BESTfit Replaces 2060750064, 4965286, A064B981 Fits Cummins ISC/Paccar PX8 EnginesBuilt for strength and efficiency, the BESTfit Cummins DPF delivers reliable emissions...
    29-08090018
    SKU:
    29-08090018
    Product Type:
    Exhaust
    Style Options:
    Cummins
    Make:
    Universal Items
    $1,535.99
    Qty in Cart: 0
    Price:
    $1,535.99
    Subtotal:
  • BESTfit Cummins Diesel Particulate Filter For Cummins Replaces 43006159, 5509714, A064F954

    BESTfit Cummins Diesel Particulate Filter For Cummins Replaces 43006159, 5509714, A064F954

    BESTFIT TRUCK PARTS

    $2,040.99
    Diesel Particulate Filter By BESTfit Replaces 43006159, 5509714, A064F954 Fits CumminsEnhance your exhaust aftertreatment system with the BESTfit Cummins Diesel Particulate Filter, a direct...
    29-08090004
    SKU:
    29-08090004
    Product Type:
    Exhaust
    Style Options:
    Cummins
    Make:
    Universal Items
    $2,040.99
    Qty in Cart: 0
    Price:
    $2,040.99
    Subtotal:
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Adding your products to cart

Shop Aftermarket Mack RD Truck Parts

Working, old-school big rigs like the Mack RD series endure many years of wear and tear on jobs sites. Over time, Mack RD hardware and components experience high heat and pressure, turning mild components replacements into system-wide repairs. We stock the model-specific mechanical parts to keep your hard-working truck performing day after day:

Cosmetic Aftermarket Upgrades for Mack RD Trucks

Road debris can chip away at the headlights, fenders, mirrors, and even mud flaps over time. That’s why we stock hundreds of exterior Mack RD replacement parts to replace damaged parts. Lastly, you can find decorative custom upgrades to spruce-up the look of your rig, from interior custom dashboards to stainless steel step boxes for easy cab exit and entry.

Frequently Asked Questions About Mack RD Truck Parts

What years and models of Mack RD trucks do your parts fit?

Our Mack RD parts are designed to fit RD600, RD688, and RD690 models manufactured from 1979 through 2004. However, compatibility can vary based on specific configurations and factory options. We recommend checking your OEM or contacting our team with your truck's model year and any special equipment codes to ensure proper fitment before ordering.

Are your Mack RD bumpers made from chrome-plated steel or stainless steel?

We offer both options depending on your needs and budget. Our chrome-plated steel bumpers feature a triple-chrome plating process over heavy-gauge steel for durability and shine. Our stainless steel options are typically 304-grade stainless with a mirror polish finish. Chrome bumpers are more affordable but require regular maintenance, while stainless steel resists corrosion better in harsh conditions but comes at a higher price point.

Do I need special tools or professional installation for Mack RD bumpers?

Most Mack RD bumper installations can be completed with standard shop tools including socket sets, wrenches, and a drill for any additional mounting holes. The bumpers typically weigh between 80-150 pounds, so having a helper or hoist is strongly recommended. Installation usually takes 2-4 hours. Some aftermarket bumpers may require minor modifications to mounting brackets or drilling new holes. Professional installation is recommended if you're not comfortable with heavy lifting or drilling.

What's the difference between OEM-style and aftermarket Mack RD parts?

OEM-style parts are manufactured to match original factory specifications for direct bolt-on replacement. Aftermarket parts may offer enhanced features like additional gauge holes, different styling, or heavier construction but might require modifications during installation. OEM-style parts typically maintain factory warranty compliance, while aftermarket options often provide better value and customization options. Both meet DOT standards when applicable.

How do I maintain chrome parts on my Mack RD to prevent rust and pitting?

Chrome parts require regular maintenance to maintain their appearance, especially in regions using road salt. Wash chrome surfaces weekly with mild soap and water, then dry thoroughly. Apply a quality chrome polish monthly and use a chrome sealant every 3-4 months for added protection. Avoid abrasive cleaners or steel wool which can scratch the chrome. For winter storage or harsh conditions, consider applying a thin coat of WD-40 or similar protectant, then remove before regular use.


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