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International Fuel Tanks

4 State Trucks has a large selection of high quality aftermarket International Fuel Tanks. Our cylindrical tanks come in a variety of capacities up to 68 inch length and 150 gallon; 53 gallon and 63 gallon D Shape fuel tanks with or without a step; and rectangular tanks in 28 gallon or 60 gallon capacities. Secure your new Navistar fuel tank with aftermarket International tank brackets and top off your purchase with fittings, splitters, pickup tubes, trim, liners, a cover and more.
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • BESTfit Aluminum Fuel Tank 100 Gallon- 26 X 45.5 Inch- Rear Fill For International ProStar

    BESTfit Aluminum Fuel Tank 100 Gallon- 26 X 45.5 Inch- Rear Fill For International ProStar

    BESTFIT TRUCK PARTS

    $917.99
    Choose Option(s) to see description.Fitment* Fits International ProStar 2011 thru 2017* Please Verify Manifold Style, Dimensions, Filler And Fittings For Sizes And Locations Before Purchasing Fuel...
    PPR_4927
    SKU:
    PPR_4927
    Capacity:
    100 Gallons
    Diameter Options:
    26 Inch
    Truck Class:
    Heavy Duty
    Position:
    Rear Fill
    Material Options:
    Aluminum
    Shape Options:
    Cylindrical
    Make:
    International
    Product Type:
    Fuel Tanks
    Availability:
    Ready To Ship
    Type Options:
    Rear Fill
    Position:
    Passenger Side
    Size Options:
    11 Gauge
    Position:
    Driver Side
    $917.99
    Qty in Cart: 0
    Price:
    $917.99
    Subtotal:
  • BESTfit Aluminum Fuel Tank 150 Gallon- 26 X 70.2 Inch- Rear Fill For International ProStar

    BESTfit Aluminum Fuel Tank 150 Gallon- 26 X 70.2 Inch- Rear Fill For International ProStar

    BESTFIT TRUCK PARTS

    $1,111.99
    Replace your aging fuel tank with the BESTfit 150-Gallon Aluminum Fuel Tank for International ProStar. Measuring 26 x 70.5 inches and available with rear fill for driver or passenger side, this...
    PPR_4880
    SKU:
    PPR_4880
    Capacity:
    150 Gallons
    Diameter Options:
    26 Inch
    Truck Class:
    Heavy Duty
    Position:
    Rear Fill
    Shape Options:
    Cylindrical
    Material Options:
    Aluminum
    Make:
    International
    Product Type:
    Fuel Tanks
    Size Options:
    11 Gauge
    Position:
    Passenger Side
    Position:
    Driver Side
    Type Options:
    Rear Fill
    $1,111.99
    Qty in Cart: 0
    Price:
    $1,111.99
    Subtotal:
  • BESTfit Aluminum Fuel Tank 100 Gallon- 26 X 45.5 Inch- Front Fill For International 9200I/9400I

    BESTfit Aluminum Fuel Tank 100 Gallon- 26 X 45.5 Inch- Front Fill For International 9200I/9400I

    BESTFIT TRUCK PARTS

    $744.99
    This BestFit Fuel Tank is manufactured to OE specifications with the same materials as used in OE manufacturing, is rigorously tested under FMSCA regulations and ISO certified. We are so confident in...
    PPR_4650
    SKU:
    PPR_4650
    Diameter Options:
    26 Inch
    Truck Class:
    Heavy Duty
    Position:
    Front Fill
    Capacity:
    100 Gallons
    Material Options:
    Aluminum
    Shape Options:
    Cylindrical
    Make:
    International
    Product Type:
    Fuel Tanks
    Availability:
    Ready To Ship
    Size Options:
    11 Gauge
    Position:
    Driver Side
    Position:
    Passenger Side
    Type Options:
    Front Fill
    Type Options:
    Center Fill
    $744.99
    Qty in Cart: 0
    Price:
    $744.99
    Subtotal:
  • BESTfit Aluminum Fuel Tank 150 Gallon-26 X 69.75 Inch- Front Fill For International 9400, 9400i

    BESTfit Aluminum Fuel Tank 150 Gallon-26 X 69.75 Inch- Front Fill For International 9400, 9400i

    BESTFIT TRUCK PARTS

    $1,060.99
    This BestFit Fuel Tank is manufactured to OE specifications with the same materials as used in OE manufacturing, is rigorously tested under FMSCA regulations and ISO certified. We are so confident in...
    PPR_4649
    SKU:
    PPR_4649
    Position:
    Front Fill
    Diameter Options:
    26 Inch
    Truck Class:
    Heavy Duty
    Capacity:
    150 Gallons
    Shape Options:
    Cylindrical
    Material Options:
    Aluminum
    Make:
    International
    Product Type:
    Fuel Tanks
    Availability:
    Ready To Ship
    Type Options:
    Center Fill
    Position:
    Passenger Side
    Size Options:
    11 Gauge
    Position:
    Driver Side
    Type Options:
    Front Fill
    $1,060.99
    Qty in Cart: 0
    Price:
    $1,060.99
    Subtotal:
  • BESTfit Aluminum Fuel Tank 150 Gallon-26 X 69.75 Inch- Front Fill For International 9200, 9200i

    BESTfit Aluminum Fuel Tank 150 Gallon-26 X 69.75 Inch- Front Fill For International 9200, 9200i

    BESTFIT TRUCK PARTS

    $1,060.99
    Keep your International 9200 or 9200i fueled and ready with the BESTfit 150-Gallon Aluminum Fuel Tank, available for front fill on driver or passenger side. Built from durable aluminum and measuring...
    PPR_4647
    SKU:
    PPR_4647
    Diameter Options:
    26 Inch
    Truck Class:
    Heavy Duty
    Position:
    Front Fill
    Capacity:
    150 Gallons
    Material Options:
    Aluminum
    Shape Options:
    Cylindrical
    Make:
    International
    Product Type:
    Fuel Tanks
    Availability:
    Ready To Ship
    Position:
    Driver Side
    Type Options:
    Front Fill
    Size Options:
    11 Gauge
    Type Options:
    Center Fill
    Position:
    Passenger Side
    $1,060.99
    Qty in Cart: 0
    Price:
    $1,060.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Aluminum Fuel Tank Steps For International W/ D Shaped Fuel Tanks

    BESTfit Aluminum Fuel Tank Steps For International W/ D Shaped Fuel Tanks

    BESTFIT TRUCK PARTS

    $55.99 - $57.99
    Choose Option(s) to see description.Fitment* Fits International DuraStar 4100 2002 thru 2018* Fits International DuraStar 4200 2002 thru 2007* Fits International DuraStar 4300 2002 thru 2018BESTfit 7...
    PPR_4619
    SKU:
    PPR_4619
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Make:
    International
    Make:
    Ford
    Make:
    GMC
    Product Type:
    Fuel Tanks
    Availability:
    Ready To Ship
    $55.99 - $57.99
    Qty in Cart: 0
    Price:
    $55.99 - $57.99
    Subtotal:
  • BESTfit Aluminum Auxiliary Fuel Tank 42 Gallon- 19 X 38 Inch- Front Fill W/ Kenworth Style Neck

    BESTfit Aluminum Auxiliary Fuel Tank 42 Gallon- 19 X 38 Inch- Front Fill W/ Kenworth Style Neck

    BESTFIT TRUCK PARTS

    $339.99
    This Fuel Tank is manufactured to OE specifications with the same materials as used in OE manufacturing, is rigorously tested under FMSCA regulations and ISO certified. We're so confident in the...
    PPR_22613
    SKU:
    PPR_22613
    Length Options:
    36 Inch
    Truck Class:
    Heavy Duty
    Capacity:
    42 Gallons
    Position:
    Front Fill
    Diameter Options:
    19 Inch
    Shape Options:
    Cylindrical
    Material Options:
    Aluminum
    Make:
    Kenworth
    Make:
    Universal Items
    Make:
    Universal
    Product Type:
    Fuel Tanks
    Type Options:
    Front Fill
    Size Options:
    11 Gauge
    Position:
    Passenger Side
    Position:
    Driver Side
    $339.99
    Qty in Cart: 0
    Price:
    $339.99
    Subtotal:
  • BESTfit Aluminum Fuel Tank 80 Gallon- 26 X 38 Inch- Rear Fill For International ProStar & TranStar 8600

    BESTfit Aluminum Fuel Tank 80 Gallon- 26 X 38 Inch- Rear Fill For International ProStar & TranStar 8600

    BESTFIT TRUCK PARTS

    $713.99
    Choose Option(s) to see description.Fitment* Fits International ProStar 2008 thru 2017* Fits International TranStar 8600 2006 thru 2018BESTfit Aluminum Fuel Tank 80 Gallon- 26 X 38 Inch- Rear Fill-...
    PPR_22611
    SKU:
    PPR_22611
    Capacity:
    80 Gallons
    Position:
    Rear Fill
    Length Options:
    36 Inch
    Truck Class:
    Heavy Duty
    Diameter Options:
    26 Inch
    Shape Options:
    Cylindrical
    Material Options:
    Aluminum
    Make:
    International
    Product Type:
    Fuel Tanks
    Availability:
    Ready To Ship
    Type Options:
    Rear Fill
    Size Options:
    11 Gauge
    Position:
    Passenger Side
    Position:
    Driver Side
    $713.99
    Qty in Cart: 0
    Price:
    $713.99
    Subtotal:
  • BESTfit Aluminum Fuel Tank 120 Gallon- 26 X 58 Inch- Rear Fill For International

    BESTfit Aluminum Fuel Tank 120 Gallon- 26 X 58 Inch- Rear Fill For International

    BESTFIT TRUCK PARTS

    $999.99 - $1,062.99
    Ensure dependable fuel storage for your International with the BESTfit 120-Gallon Aluminum Fuel Tank. Measuring 26 x 55.5 inches with rear fill options for driver or passenger side, this tank is...
    PPR_22610
    SKU:
    PPR_22610
    Capacity:
    120 Gallons
    Position:
    Rear Fill
    Diameter Options:
    26 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Shape Options:
    Cylindrical
    Make:
    International
    Product Type:
    Fuel Tanks
    Type Options:
    Rear Fill
    Size Options:
    11 Gauge
    Position:
    Passenger Side
    Position:
    Driver Side
    $999.99 - $1,062.99
    Qty in Cart: 0
    Price:
    $999.99 - $1,062.99
    Subtotal:
  • BESTfit Aluminum Fuel Tank 120 Gallon- 26 X 58 Inch- Rear Fill For International ProStar, TranStar 8600

    BESTfit Aluminum Fuel Tank 120 Gallon- 26 X 58 Inch- Rear Fill For International ProStar, TranStar 8600

    BESTFIT TRUCK PARTS

    $999.99 - $1,009.99
    Maintain optimal fuel supply on your International ProStar or 8600 with the BESTfit 120-Gallon Aluminum Fuel Tank. Built from durable aluminum and sized 26 x 58 inches, this rear fill tank...
    PPR_22609
    SKU:
    PPR_22609
    Diameter Options:
    26 Inch
    Length Options:
    56 Inch
    Truck Class:
    Heavy Duty
    Capacity:
    120 Gallons
    Position:
    Rear Fill
    Shape Options:
    Cylindrical
    Material Options:
    Aluminum
    Make:
    International
    Product Type:
    Fuel Tanks
    Availability:
    Ready To Ship
    Type Options:
    Rear Fill
    Size Options:
    11 Gauge
    Position:
    Passenger Side
    Position:
    Driver Side
    $999.99 - $1,009.99
    Qty in Cart: 0
    Price:
    $999.99 - $1,009.99
    Subtotal:
  • Robert James 22 Inch Quilted Vinyl Fuel Tank End Covers With 9 Inch Skirt For Kenworth, Western Star

    Robert James 22 Inch Quilted Vinyl Fuel Tank End Covers With 9 Inch Skirt For Kenworth, Western Star

    ROBERT JAMES ENTERPRISES

    $200.99 - $244.99
    Customize your fuel tanks with the 22 x 9 Inch Quilted Vinyl Fuel Tank Cover, perfect for various Kenworth and Western Star models. Manufactured by Robert James Enterprises, these covers are crafted...
    PPR_201611
    SKU:
    PPR_201611
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Diameter Options:
    22 Inch
    Material Options:
    Vinyl
    Make:
    Western Star
    Make:
    Kenworth
    Make:
    Universal Items
    Product Type:
    Fuel Tanks
    $200.99 - $244.99
    Qty in Cart: 0
    Price:
    $200.99 - $244.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Black Steel Fuel Tank Step For International WorkStar, TranStar

    BESTfit Black Steel Fuel Tank Step For International WorkStar, TranStar

    BESTFIT TRUCK PARTS

    $48.51 - $73.99
    Upgrade your International WorkStar or TranStar with the BESTfit Black Steel Fuel Tank Step, designed for strength, durability, and reliable daily use. Available in multiple sizes and configurations,...
    PPR_201551
    SKU:
    PPR_201551
    Color:
    Black
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    International
    Make:
    Ford
    Product Type:
    Fuel Tanks
    Availability:
    Ready To Ship
    $48.51 - $73.99
    Qty in Cart: 0
    Price:
    $48.51 - $73.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Weld-In Curve Style Aluminum Flange With Female Pipe Thread Center

    Weld-In Curve Style Aluminum Flange With Female Pipe Thread Center

    AFTERMARKET

    $12.74
    If your project calls for a weld-in flange with a curved base, the curve-style aluminum flange with female pipe thread center is a straightforward option built for heavy-duty fabrication and repair...
    PPR_200367
    SKU:
    PPR_200367
    Truck Class:
    Universal
    Material Options:
    Aluminum
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Fuel Tanks
    Availability:
    Ready To Ship
    $12.74
    Qty in Cart: 0
    Price:
    $12.74
    Subtotal:
  • On Sale
    Limited Quantity Available
    FREE SHIPPING OVER $249
    Weld-In Flat Style Aluminum Flange With Female Pipe Thread Center

    Weld-In Flat Style Aluminum Flange With Female Pipe Thread Center

    AFTERMARKET

    $0.98 - $17.64
    For anyone needing a basic weld-in flange for pipe or tank fabrication, the 1?Inch Aluminum Flat Flange, 1.5?Inch Aluminum Flat Flange, 0.75?Inch Aluminum Flat Flange, 0.5?Inch Aluminum Flat Flange,...
    PPR_200366
    SKU:
    PPR_200366
    Truck Class:
    Universal
    Material Options:
    Aluminum
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Fuel Tanks
    Availability:
    Ready To Ship
    $0.98 - $17.64
    Qty in Cart: 0
    Price:
    $0.98 - $17.64
    Subtotal:
  • BESTfit Aluminum Fuel Tank 100 Gallon- 26 X 45.5 Inch- Rear Fill For International 9000 Series

    BESTfit Aluminum Fuel Tank 100 Gallon- 26 X 45.5 Inch- Rear Fill For International 9000 Series

    BESTFIT TRUCK PARTS

    $866.99 - $875.99
    This 100 gallon Rear Fill Fuel Tank fits the International 9000 series models. The fuel tank is tested under FMSCA regulations and it is also ISO certified. This tank has the pipe fittings on the...
    PPR_200020
    SKU:
    PPR_200020
    Diameter Options:
    26 Inch
    Truck Class:
    Heavy Duty
    Position:
    Rear Fill
    Capacity:
    100 Gallons
    Material Options:
    Aluminum
    Shape Options:
    Cylindrical
    Make:
    International
    Product Type:
    Fuel Tanks
    Availability:
    Ready To Ship
    Position:
    Passenger Side
    Position:
    Driver Side
    Type Options:
    Rear Fill
    Size Options:
    11 Gauge
    $866.99 - $875.99
    Qty in Cart: 0
    Price:
    $866.99 - $875.99
    Subtotal:
  • BESTfit Aluminum Fuel Tank 150 Gallon- 26 X 70.5 Inch- Rear Fill For International 9200, 9300, 9400, 9670

    BESTfit Aluminum Fuel Tank 150 Gallon- 26 X 70.5 Inch- Rear Fill For International 9200, 9300, 9400, 9670

    BESTFIT TRUCK PARTS

    $1,060.99
    Equip your International 9200, 9300, 9400, or 9670 with the BESTfit 150-Gallon Aluminum Fuel Tank, built to provide rugged durability and corrosion resistance. Measuring 26 x 70.5 inches with rear...
    PPR_200019
    SKU:
    PPR_200019
    Position:
    Rear Fill
    Diameter Options:
    26 Inch
    Truck Class:
    Heavy Duty
    Capacity:
    150 Gallons
    Shape Options:
    Cylindrical
    Material Options:
    Aluminum
    Make:
    International
    Product Type:
    Fuel Tanks
    Position:
    Passenger Side
    Position:
    Driver Side
    Type Options:
    Rear Fill
    Size Options:
    11 Gauge
    $1,060.99
    Qty in Cart: 0
    Price:
    $1,060.99
    Subtotal:
  • 28 Inch Black Quilted Vinyl Fuel Tank End Covers W/ 9 Inch Skirt

    28 Inch Black Quilted Vinyl Fuel Tank End Covers W/ 9 Inch Skirt

    ROBERT JAMES ENTERPRISES

    $208.99
    Black Quilted Vinyl End Covers For 28 Inch Diameter Fuel Tanks W/ 9 Inch Sleeve By Robert James* High Quality Tank Covers* Quilted Vinyl* Black * Dimensions:  - 28 Inch Diameter   - 9 Inch Skirt*...
    29-08652809050
    SKU:
    29-08652809050
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Material Options:
    Vinyl
    Make:
    Universal Items
    Product Type:
    Fuel Tanks
    $208.99
    Qty in Cart: 0
    Price:
    $208.99
    Subtotal:
  • Robert James 22 Inch Lime Green Quilted Vinyl Fuel Tank End Covers W/ 9 Inch Skirt For Kenworth, Mack, Western Star

    Robert James 22 Inch Lime Green Quilted Vinyl Fuel Tank End Covers W/ 9 Inch Skirt For Kenworth, Mack, Western Star

    ROBERT JAMES ENTERPRISES

    $244.99
    Lime Green Quilted Vinyl End Covers For 22 Inch Diameter Fuel Tanks W/ 9 Inch Sleeve By Robert JamesProtect your truck with these lime green quilted fuel tank end covers. With a 22-inch diameter and...
    29-065220927
    SKU:
    29-065220927
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Material Options:
    Vinyl
    Make:
    Kenworth
    Product Type:
    Fuel Tanks
    $244.99
    Qty in Cart: 0
    Price:
    $244.99
    Subtotal:
  • Robert James 26 Inch Old Glory Flag Vinyl Fuel Tank End Covers W/ 8 Inch Skirt For International, Mack, Peterbilt, Volvo

    Robert James 26 Inch Old Glory Flag Vinyl Fuel Tank End Covers W/ 8 Inch Skirt For International, Mack, Peterbilt, Volvo

    ROBERT JAMES ENTERPRISES

    $397.99
    Old Glory Quilted Vinyl Fuel Tank Cover For 26 Inch Diameter Tanks W/ 8 Inch Sleeve By Robert James* High Quality Fuel Tank End Cover* Made Of Vinyl* Old Glory Flag Design* Fits Listed Models With 26...
    29-06050004
    SKU:
    29-06050004
    Diameter Options:
    26 Inch
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Material Options:
    Vinyl
    Make:
    Peterbilt
    Product Type:
    Fuel Tanks
    $397.99
    Qty in Cart: 0
    Price:
    $397.99
    Subtotal:
  • Robert James 26 Inch Brown Quilted Vinyl Fuel Tank End Covers W/ 18 Inch Skirt For International, Peterbilt & Volvo W/ 26 Inch Fuel Tanks

    Robert James 26 Inch Brown Quilted Vinyl Fuel Tank End Covers W/ 18 Inch Skirt For International, Peterbilt & Volvo W/ 26 Inch Fuel Tanks

    ROBERT JAMES ENTERPRISES

    $203.99
    Brown Quilted Vinyl Fuel Tank Covers For 26 Inch Diameter Tanks W/ 18 Inch Sleeve By Robert JamesKeep your truck looking sharp with these Brown Quilted Fuel Tank End Cap Covers! Designed for 26 inch...
    29-06050001
    SKU:
    29-06050001
    Diameter Options:
    26 Inch
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Material Options:
    Vinyl
    Make:
    Peterbilt
    Product Type:
    Fuel Tanks
    $203.99
    Qty in Cart: 0
    Price:
    $203.99
    Subtotal:
  • Total: items /

Adding your products to cart

Whether you’re running a ProStar, DuraStar, LoneStar, or part of the 9000 Series, your fuel tank setup matters. This lineup of aftermarket fuel tanks and fuel system accessories for International semi trucks helps you run longer, refuel smarter, and protect your investment with heavy-duty components built for commercial use.

Fuel Tank Options Built to Fit Your International

Our tanks come in a variety of sizes—from 26 to 150 gallons—and configurations, including: - Front-fill, rear-fill, and D-shaped designs - Polished or raw aluminum fuel tanks for reduced weight and better corrosion resistance - Steel tanks for rugged durability in demanding conditions
Each tank is made to meet or exceed OEM standards and fits popular International models for a direct, no-hassle install. You can further upgrade your rig with better structural mounting on your International truck frame and chassis, or swap out exhaust parts that are located nearby. You can also swap out any worn-out fuel tank hoses and lines to your International.

Fuel Tank Accessories to Complete Your Setup

Fuel tanks are only part of the story. This category includes all the extras you need to replace, repair, or upgrade your full fuel system: - Fuel tank straps and brackets for secure mounting. - Sending units and block-off plates. - Tank liner kits to extend fuel tank lifespan. - Anti-siphon tubes for added protection. - Filler neck caps, drain plugs, and crossover lines. - Hydraulic oil tanks for auxiliary systems and PTO setups.

Why Upgrade Your International’s Fuel System?

- Prevent costly leaks and breakdowns with reliable, road-tested tanks - Boost your truck’s fuel range with larger capacity options - Improve safety with modern anti-siphon and venting features - Restore your truck’s appearance with polished aluminum tanks and fresh mounting gear - Stay compliant with DOT regulations by replacing aging or damaged fuel components
Built to handle the grind. Designed to keep you moving. Upgrade your International truck's fuel system with high-quality aftermarket fuel tanks, straps, caps, and more—all in one place. Shop now and keep your rig fueled and ready for the next mile.

Frequently Asked Questions About International Fuel Tanks

What International truck models and years are these fuel tanks compatible with?

Our fuel tanks are designed to fit International models including the ProStar (2008-2016), LoneStar (2009-2017), 9900i (2000-2016), 9400i (2000-2016), and 5900i SBA (2001-2011). Each product listing specifies exact model compatibility. For trucks with aftermarket modifications or custom chassis setups, we recommend calling our tech support at 1-888-875-7787 to verify fitment before ordering.

What's the difference between aluminum and steel fuel tanks, and which should I choose?

Aluminum tanks are lighter (reducing overall vehicle weight by 50-100 lbs), resist corrosion better, and typically last 15-20 years. Steel tanks cost about 30% less upfront, are more impact-resistant, and easier to repair if damaged. Most owner-operators prefer aluminum for weight savings and longevity, while fleet operators often choose steel for the lower initial cost. Both meet DOT requirements when properly maintained.

Do I need special brackets or hardware to install these tanks, or can I reuse my existing mounting equipment?

Most replacement tanks use your existing mounting straps and brackets if they're in good condition. However, we strongly recommend inspecting all hardware during installation. Replace any straps showing cracks, excessive rust, or stretching. New strap kits typically cost $45-85 and ensure proper tank security. Some aftermarket tanks may require different strap lengths - check the product specifications or contact us for guidance.

What tank sizes and shapes are available, and how do I determine the right capacity for my truck?

We stock round and D-shaped tanks from 50 to 150 gallons, with 100-120 gallon sizes being most common for long-haul applications. Measure your existing tank's diameter and length, plus the available frame rail space. D-shaped tanks maximize capacity in tight spaces, while round tanks are typically more affordable. Consider your typical routes - regional drivers often choose 80-100 gallon tanks, while OTR drivers prefer 120-150 gallons to reduce fuel stops.

How difficult is the installation process, and what tools or skills are required?

Installation typically takes 2-4 hours per tank for someone with basic mechanical skills. You'll need standard hand tools, a floor jack or tank jack, and ideally a helper for positioning. The main challenges are safely draining/removing the old tank (diesel weighs 7 lbs per gallon) and ensuring proper fuel line connections. Professional installation runs $150-300 per tank. Always disconnect the battery, drain fuel completely, and follow DOT regulations for fuel system work.


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