null
Shop by Make, Model & Year
Isuzu Truck Parts

Isuzu Truck Parts

Shop for top-quality Isuzu truck parts at 4 State Trucks. Discover amazing upgrades, OE replacements, and aftermarket solutions. From semi-truck bumpers to engine parts and fenders, we have everything you need to keep your truck in peak condition.

Universal Parts

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • FREE SHIPPING OVER $249
    Brass Electric Air Solenoid 12 Volt Normally Closed

    Brass Electric Air Solenoid 12 Volt Normally Closed

    HORNBLASTERS

    $76.29
    Electric Air Solenoid* High Quality Electric Air Solenoid * Made Of Brass * Great For Operating High Volume Air Horns And Train Horns* 12 Volt * Normally Closed - Opens When Power Is Applied* 1/2 Inch NPT Inlet And Outlet* 0 - 145 PSI Operating Range*...
    09-051403
    SKU:
    09-051403
    Rating:
    145 PSI
    Truck Class:
    Universal
    Material Options:
    Brass
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Availability:
    Ready To Ship
    $76.29
    Qty in Cart: 0
    Price:
    $76.29
    Subtotal:
  • FREE SHIPPING OVER $249
    TPHD Low-Profile Drain Valve For Air Tank With 1/4 Inch NPT

    TPHD Low-Profile Drain Valve For Air Tank With 1/4 Inch NPT

    TPHD

    $15.99
    Drain Valve By TPHDMaintain optimal performance in your air tanks with the TPHD Low-Profile Drain Valve. Featuring a 1/4 inch NPT fitting, 0.13 inch ID, and a 60-inch cable with ball end, this valve makes draining simple and reliable. Sold individually...
    09-051402
    SKU:
    09-051402
    Truck Class:
    Universal
    Diameter Options:
    1/4 Inch
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    $15.99
    Qty in Cart: 0
    Price:
    $15.99
    Subtotal:
  • Stainless Steel Air Line Box Backplate

    Stainless Steel Air Line Box Backplate

    PHOENIX DESIGN

    $75.99
    Stainless Steel Air Line Box Backplate* High Quality Airline Box Backplate* Sold Individually* Made In USA* Warranty On Airline Box Backplate Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part...
    09-051400016
    SKU:
    09-051400016
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Availability:
    Ready To Ship
    $75.99
    Qty in Cart: 0
    Price:
    $75.99
    Subtotal:
  • 12V Brass Electric Air Solenoid With 3/4 Inch NPT

    12V Brass Electric Air Solenoid With 3/4 Inch NPT

    HORNBLASTERS

    $69.49
    Electric 3 PSI - 217 PSI Train Horn Valve* High Quality Electric Air Solenoid * Made Of Brass * 0.750 Inch NPT* 12 Volt Electric Air Valve* A Valve Designed For Train Horn* Features:  - 20MM Orifice   - Port Size 1.750 Inch NPT  - Minimum...
    09-051400001
    SKU:
    09-051400001
    Rating:
    217 PSI
    Truck Class:
    Universal
    Material Options:
    Brass
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Availability:
    Ready To Ship
    $69.49
    Qty in Cart: 0
    Price:
    $69.49
    Subtotal:
  • Red Steel Electric Bull Horn

    Red Steel Electric Bull Horn

    UNITED PACIFIC

    $37.21
    Electric Red Bull HornThis electric bull horn simulates the sound of an angry bull with its red steel housing. It is designed for 12-volt applications.* High Quality Electric Bull Horn* Made Of Steel* Simulates The Sound Of An Angry Bull* Red Steel...
    09-051372
    SKU:
    09-051372
    Truck Class:
    Universal
    Color:
    Red
    Material Options:
    Steel
    Make:
    Universal Items
    Shape Options:
    Round
    Style Options:
    1 Bell
    Product Type:
    Exterior
    $37.21
    Qty in Cart: 0
    Price:
    $37.21
    Subtotal:
  • FREE SHIPPING OVER $249
    Diaphragm For 3 Trumpet Train Horn

    Diaphragm For 3 Trumpet Train Horn

    UNITED PACIFIC

    $7.96
    Replacement 3 Trumpet Train Horn Diaphragm* High Quality Train Horn* Only Fits 09-051354 Train Horn* 3-7/8 Inch Diameter* With 6 Evenly Spaced Holes On The Circumference* Sold Individually* Warranty On Train Horn Against Defects In Workmanship & Material...
    09-051371
    SKU:
    09-051371
    Truck Class:
    Heavy Duty
    Style Options:
    3 Bell
    Make:
    Universal Items
    Product Type:
    Exterior
    Shape Options:
    Round
    Availability:
    Ready To Ship
    $7.96
    Qty in Cart: 0
    Price:
    $7.96
    Subtotal:
  • Chrome Deluxe 4 Trumpet Mini Train Horn Kit

    Chrome Deluxe 4 Trumpet Mini Train Horn Kit

    UNITED PACIFIC

    $330.99
    4 Trumpet Mini Train Horn Kit With Heavy Duty Air Compressor & 5.5 Liter Air TrainAre you looking for a horn kit for your truck? 4 State Trucks offers this deluxe chrome plated 4 trumpet mini-train horn kit. The kit comes with a heavy-duty turbo air...
    09-051366K
    SKU:
    09-051366K
    Truck Class:
    Universal
    Style Options:
    4 Bell
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Shape Options:
    Round
    Product Type:
    Frame & Chassis
    $330.99
    Qty in Cart: 0
    Price:
    $330.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Deluxe 4 Trumpet Mini Chrome Train Horn

    Deluxe 4 Trumpet Mini Chrome Train Horn

    UNITED PACIFIC

    $121.99
    Deluxe 4 Trumpet Mini Chrome Train HornAre you looking for a horn kit for your truck? 4 State Trucks offers this deluxe chrome plated 4 trumpet mini-train horn kit. The horn comes with a 12V electric solenoid and produces a sound output of approximately...
    09-051366
    SKU:
    09-051366
    Truck Class:
    Universal
    Style Options:
    4 Bell
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Shape Options:
    Round
    Product Type:
    Frame & Chassis
    Availability:
    Ready To Ship
    $121.99
    Qty in Cart: 0
    Price:
    $121.99
    Subtotal:
  • Diecast Air Horn W/ Wolf Whistle Sound, Apox. 6 X 3.5 X 4.5 Inches

    Diecast Air Horn W/ Wolf Whistle Sound, Apox. 6 X 3.5 X 4.5 Inches

    UNITED PACIFIC

    $84.22
    12 Volt Die Cast Air HornCheck out the updated version of the classic air driven wolf whistle! This model simulates the sound of a whistle in a realistic and fun way.* High Quality Vacuum Horn * Includes:  - Vacuum Hose - Mounting...
    09-051365
    SKU:
    09-051365
    Truck Class:
    Universal
    Style Options:
    1 Bell
    Make:
    Universal Items
    Shape Options:
    Round
    Product Type:
    Exterior
    $84.22
    Qty in Cart: 0
    Price:
    $84.22
    Subtotal:
  • FREE SHIPPING OVER $249
    Chrome Ah-ooo-Gah Horn

    Chrome Ah-ooo-Gah Horn

    UNITED PACIFIC

    $21.51
    Vintage Style Car Horn W/ Spartan Like SoundFeaturing a vintage vibe with a chrome body, the Ah-ooo-Gah Horn packs a punch with its 490 Hz frequency and 110 db sound output. Perfect for truck models, this horn's Spartan-like sound stands out* High...
    09-051364
    SKU:
    09-051364
    Diameter Options:
    5 Inch
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Style Options:
    1 Bell
    Shape Options:
    Round
    Product Type:
    Exterior
    Availability:
    Ready To Ship
    $21.51
    Qty in Cart: 0
    Price:
    $21.51
    Subtotal:
  • Black 3 Trumpet Train Horn Kit W/ Air Compressor & 5.5 Liter Air Tank

    Black 3 Trumpet Train Horn Kit W/ Air Compressor & 5.5 Liter Air Tank

    UNITED PACIFIC

    $452.99
    Train Horn Kit With Air Compressor & 5.5 Liter Air Tank4 State Trucks offers this very loud black 3 trumpet train horn kit. The horn comes with one turbo air compressor and a 5.5 liter tank system. It produces approximately 145 decibels of sound.* High...
    09-051354K
    SKU:
    09-051354K
    Truck Class:
    Universal
    Color:
    Black
    Style Options:
    3 Bell
    Material Options:
    Steel
    Make:
    Universal Items
    Shape Options:
    Round
    Capacity:
    1 Gallon
    Product Type:
    Exterior
    $452.99
    Qty in Cart: 0
    Price:
    $452.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Economy Black 3 Trumpet Train Horn

    Economy Black 3 Trumpet Train Horn

    UNITED PACIFIC

    $153.99
    Black Standard Duty 3 Trumpet Train HornIf you are looking for a great sounding horn at a budget-friendly price, 4 State Trucks offers this quality Economy black 3 trumpet train horn. It comes with a 12 electric solenoid and produces a sound output of...
    09-051354
    SKU:
    09-051354
    Truck Class:
    Universal
    Color:
    Black
    Style Options:
    3 Bell
    Material Options:
    Steel
    Make:
    Universal Items
    Diameter Options:
    6 1/4 Inch
    Length Options:
    15 3/4 Inch
    Shape Options:
    Round
    Product Type:
    Exterior
    Availability:
    Ready To Ship
    $153.99
    Qty in Cart: 0
    Price:
    $153.99
    Subtotal:
  • FREE SHIPPING OVER $249
    12V Electric Solenoid Valve For Train Horns

    12V Electric Solenoid Valve For Train Horns

    UNITED PACIFIC

    $21.31
    Train Horn 12V Electric Solenoid Valve* High Quality Air Horn Electric Valve* 12V Solenoid * Fits Train Horn #s 09-051354 And 09-051321* Sold Individually* Warranty On Valve Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...
    09-051352
    SKU:
    09-051352
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Exterior
    Availability:
    Ready To Ship
    $21.31
    Qty in Cart: 0
    Price:
    $21.31
    Subtotal:
  • 24.5 Inch Hadley Style Round Bell With Square Back

    24.5 Inch Hadley Style Round Bell With Square Back

    HADLEY

    $221.99
    24.5 Inch Long Hadley Style Round 6 Inch Bell With Square BackUpgrade your truck with the Hadley Horn 24.5" Round Bell with Square Back. This horn boasts a unique design and comes with a horn support for easy installation. Featuring a 7/16-24 air...
    09-051348
    SKU:
    09-051348
    Length Options:
    24 Inch
    Location:
    Made In USA
    Truck Class:
    Universal
    Make:
    Universal Items
    Shape Options:
    Round
    Material Options:
    Steel
    Finish Options:
    Chrome-Plated
    Style Options:
    1 Bell
    Product Type:
    Frame & Chassis
    Availability:
    Ready To Ship
    $221.99
    Qty in Cart: 0
    Price:
    $221.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Hadley 29 Inch Chrome Square Air Horn

    Hadley 29 Inch Chrome Square Air Horn

    HADLEY

    $219.99
    Square Hadley Air Horn With Pedestal, Gasket, And BoltsAdd a horn to your truck that can not be ignored with this quality Hadley Air horn. Measuring 29 inches long, it has a square bell and comes with a pedestal to eliminate vibrations at high speeds...
    09-051333
    SKU:
    09-051333
    Truck Class:
    Universal
    Length Options:
    29 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Shape Options:
    Rectangular
    Style Options:
    1 Bell
    Product Type:
    Exterior
    Availability:
    Ready To Ship
    $219.99
    Qty in Cart: 0
    Price:
    $219.99
    Subtotal:
  • FREE SHIPPING
    Chrome Plated Train Whistle, 5 1/2 x 5 x 13 1/8 Inch

    Chrome Plated Train Whistle, 5 1/2 x 5 x 13 1/8 Inch

    UNITED PACIFIC

    $405.99
    Chrome-Plated Train Whistle With 30 - 120 PSI Operating RangeGive your semi truck an extra loud way to grab attention with this vintage style train whistle simulator. It features a stunning chrome-plated finish achieved through a meticulous triple chrome...
    09-051331
    SKU:
    09-051331
    Rating:
    120 PSI
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Exterior
    $405.99
    Qty in Cart: 0
    Price:
    $405.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Chrome Square Genuine Hadley Air Horn 26 Inch W/ Pedestal & Front Cover

    Chrome Square Genuine Hadley Air Horn 26 Inch W/ Pedestal & Front Cover

    HADLEY

    $226.99
    Square Hadley Air Horn With Pedestal & Front CoverUpgrade your truck with the Chrome Square Genuine Hadley Air Horn! This 26-inch beauty comes with a pedestal and front cover, delivering a powerful and stylish statement. Made in the USA, it's a...
    09-051327
    SKU:
    09-051327
    Truck Class:
    Universal
    Length Options:
    26 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Shape Options:
    Rectangular
    Style Options:
    1 Bell
    Product Type:
    Exterior
    Availability:
    Ready To Ship
    $226.99
    Qty in Cart: 0
    Price:
    $226.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Hadley Horn Mounting Elbow Kit - 7/16 Inch Fitting H11477S

    Hadley Horn Mounting Elbow Kit - 7/16 Inch Fitting H11477S

    HADLEY

    $22.29
    Hadley Mount Elbow And Tension Washer Kit* High Quality Hadley Fitting Kit* 7/16 Inch * Sold Individually* Made In USA* Warranty On Hadley Fitting Kits Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket...
    09-051326
    SKU:
    09-051326
    Truck Class:
    Universal
    Material Options:
    Brass
    Make:
    Universal Items
    Product Type:
    Exterior
    Availability:
    Ready To Ship
    $22.29
    Qty in Cart: 0
    Price:
    $22.29
    Subtotal:
  • FREE SHIPPING
    BESTfit Heavy Duty 1 Bell Train Horn

    BESTfit Heavy Duty 1 Bell Train Horn

    BESTFIT TRUCK PARTS

    $380.99
    BESTfit Powder-Coated Aluminum 1 Trumpet Train Horn* High Quality Horn Trumpet* Made Of Textured Cast Aluminum* 126 Decibels* Use At A Distance Of At Least 100 Foot From Others* Never Operate In A Closed Environment* Consumers Responsibility To Comply...
    09-0513132
    SKU:
    09-0513132
    Truck Class:
    Universal
    Color:
    Black
    Style Options:
    1 Bell
    Material Options:
    Aluminum
    Make:
    Universal Items
    Length Options:
    16 Inch
    Diameter Options:
    7 1/2 Inch
    Shape Options:
    Round
    Product Type:
    Frame & Chassis
    Availability:
    Ready To Ship
    $380.99
    Qty in Cart: 0
    Price:
    $380.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Stainless Steel Horn Cover For Grover Horn, 4.625 X 7.375 Inch

    Stainless Steel Horn Cover For Grover Horn, 4.625 X 7.375 Inch

    UNITED PACIFIC

    $17.08
    SS Rectangular Horn Cover For Grover HornProtect and reinforce a 4.625 inch by 7.375 inch rectangular shaped horn with this shiny cover by United Pacific. It is made of stainless steel and features a dome-shaped top. The cover snaps into place with...
    09-051313
    SKU:
    09-051313
    Truck Class:
    Universal
    Shape Options:
    Rectangular
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Exterior
    Availability:
    Ready To Ship
    $17.08
    Qty in Cart: 0
    Price:
    $17.08
    Subtotal:
  • Total: items /

Adding your products to cart

Isuzu Truck Parts

Find premium aftermarket Isuzu truck parts and accessories to customize your medium-duty work truck. Our product lineup features all sorts of replacement parts, upgrades, and add-on accessories that can enhance performance, functionality, and even looks of the Isuzu truck models. Isuzu Truck Models: Some of the high-demand models in this range include the NPR, NPR-HD, NQR, and the NRR. These products are highly reliable, dependable, and versatile, hence making them very suitable for almost all types of commercial needs related to delivery, hauling, and utility. Among these various truck models, some of their feature and benefit profiles are discussed below. - Body and Cab: Included in this are grilles, fenders, steps, and many other external features that can be fitted or replaced in Isuzu trucks for either maintaining or enhancing their looks. - Light Electrical: Ranging from different types of Head and Taillights to Marker Lights to LED Light Bars, the variations in the range are great and do help immensely toward better visibility and safety. - Suspension and brakes: Replacement parts such as shocks, springs, and brake components help provide a smooth, safe ride. - Powertrain: Engine and transmission parts, along with fuel system components, will keep Isuzu trucks at peak performance. - Comfort and convenience: Accessories such as seats, storage solutions, and climate control systems enhance the driver and passenger experience. Whether you're looking to repair, maintain, or customize your Isuzu truck, the product lineup of Isuzu Truck Parts has a wide range of products in high quality for whatever needs you might have. From professional fleet operators to the individual truck owner, you can find the necessary parts to maintain your truck.

Frequently Asked Questions About Isuzu Truck Parts

What Isuzu truck models and years are your parts compatible with?

Our Isuzu parts inventory covers NPR, NQR, NRR, and FTR series trucks from 2008 to present. Most universal parts like mirrors, lights, and accessories fit multiple years within the same series. However, body parts like bumpers, hoods, and grilles are typically year-specific due to design changes. Always check the product description for exact fitment details, or contact our team with your OEM for guaranteed compatibility verification.

Are aftermarket Isuzu parts as durable as OEM parts?

Quality aftermarket parts can match or exceed OEM specifications when sourced from reputable manufacturers. Our aftermarket bumpers use 14-gauge steel (same as OEM), while our chrome and stainless steel options often provide better corrosion resistance than factory parts. All electrical components meet DOT/SAE standards. The key difference is typically price - aftermarket parts cost 30-50% less while maintaining comparable quality and fitment.

What tools and skills do I need to install Isuzu truck parts myself?

Basic installations like mirrors, lights, and mud flaps require standard hand tools and take 30-60 minutes. Bumper replacements need a socket set, jack stands, and ideally a helper - expect 2-3 hours for front bumpers. More complex parts like hoods or grilles may require panel alignment experience. Most parts include installation hardware, but always verify before starting. Professional installation typically runs $75-150 per hour if you prefer expert help.

What finish options are available for Isuzu bumpers and exterior parts?

Chrome-plated steel remains the most popular for its mirror-like appearance and durability. Polished stainless steel offers superior corrosion resistance without re-chroming needs. Painted steel bumpers come primer-ready for color matching your truck. Raw steel options allow custom powder coating. Each finish affects price and maintenance - chrome needs regular polishing, stainless requires less upkeep, and painted finishes may need touch-ups after 3-5 years depending on conditions.

How do I identify the correct part number for my Isuzu truck?

Start with your OEM number - positions 4-8 identify your exact model and specifications. OEM part numbers are typically stamped on the original part or found in your owner's manual. For body parts, note whether you have a standard or wide-body configuration, as this affects fitment. When in doubt, provide our team with your year, model, and OEM. We can cross-reference multiple databases to ensure you receive the correct part the first time.


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