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Freightliner Columbia 112/120 Fuel Tank Caps

Get your Freightliner Columbia 112 and 120 fuel tank caps at 4 State Trucks! Our extensive inventory includes a variety of high-quality, custom, and aftermarket options designed to meet your specific needs. Whether you're in search of lockable caps with keys for extra security, sleek non-locking caps, efficiently vented designs, or solid non-vented models, we have the ideal solution for you.
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  • Locking Fuel Cap Cover For Freightliner, Sterling, Western Star W/ Push & Twist Caps

    Locking Fuel Cap Cover For Freightliner, Sterling, Western Star W/ Push & Twist Caps

    AFTERMARKET

    $101.99
    Locking Fuel Cap Covers For Push And Twist CapsThis Locking Fuel Cap is the perfect defense against fuel theft for select Freightliner, Sterling, and Western Star models with push and twist caps...
    29-060325
    SKU:
    29-060325
    Material Options:
    Aluminum
    Truck Class:
    Heavy Duty
    Make:
    Sterling
    Make:
    Western Star
    Make:
    Freightliner
    Product Type:
    Fuel Tanks
    $101.99
    Qty in Cart: 0
    Price:
    $101.99
    Subtotal:
  • Aluminum Leak Defender Fuel Tank Adapter System Kit For Freightliner

    Aluminum Leak Defender Fuel Tank Adapter System Kit For Freightliner

    HEAVY TRUCK SOLUTIONS

    $300.99
    Freightliner 2-PC Fuel Tank Adapter System With Collar & Fuel CapStop fuel cap leaks with the Freightliner Leak Defender Fuel Cap and Collar Kit. This 2-piece design offers a simple solution for...
    03-06010012
    SKU:
    03-06010012
    Product Type:
    Fuel Tanks
    Truck Class:
    Heavy Duty
    Make:
    Freightliner
    Ready To Ship:
    Yes
    Material Options:
    Aluminum
    $300.99
    Qty in Cart: 0
    Price:
    $300.99
    Subtotal:
  • FREE SHIPPING OVER $249
    CSM Non-Vented Lever Lock Flush Fuel Tank Cap Assembly

    CSM Non-Vented Lever Lock Flush Fuel Tank Cap Assembly

    CHROME SHOP MAFIA

    $190.99
    Non-Vented Lever Lock Flush Fuel Cap Assembly by Chrome Shop MafiaThis flush fuel cap assembly features an unvented cap with a lever lock and an O-Ring Seal. It is sold individually and is made in...
    09-060300
    SKU:
    09-060300
    Truck Class:
    Universal
    Location:
    Made In USA
    Style Options:
    Non Vented
    Material Options:
    Aluminum
    Make:
    Universal Items
    Product Type:
    Fuel Tanks
    Ready To Ship:
    Yes
    $190.99
    Qty in Cart: 0
    Price:
    $190.99
    Subtotal:
  • FREE SHIPPING OVER $249
    2 Inch Brass 11.5 TPI Non-Vented Fuel Cap

    2 Inch Brass 11.5 TPI Non-Vented Fuel Cap

    VELVAC

    $45.16
    2 Inch Non-Vented Fuel CapLooking for a reliable fuel cap for your industrial or automotive needs? Check out the Brass 2 Inch 11.5 TPI Non-Vented Fuel Cap. Made of durable brass, it's perfect for...
    09-060301
    SKU:
    09-060301
    Truck Class:
    Universal
    Diameter Options:
    2 Inch
    Material Options:
    Brass
    Make:
    Universal Items
    Product Type:
    Fuel Tanks
    Style Options:
    Non Locking
    Ready To Ship:
    Yes
    $45.16
    Qty in Cart: 0
    Price:
    $45.16
    Subtotal:
  • 3.5 OD X 2.85 Inch ID Fuel Cap Gasket

    3.5 OD X 2.85 Inch ID Fuel Cap Gasket

    AUTOMANN USA

    $3.80
    Replacement 0.14 Inch Thick Fuel Tank Cap GasketNeed a replacement gasket for your 572.1017 fuel cap? This rubber gasket measures 2.85 inches I.D., 3.50 inches O.D., and has a thickness of 0.14...
    09-06010002
    SKU:
    09-06010002
    Truck Class:
    Heavy Duty
    Diameter Options:
    2 3/4 Inch
    Material Options:
    Rubber
    Make:
    Universal Items
    Product Type:
    Fuel Tanks
    Ready To Ship:
    Yes
    $3.80
    Qty in Cart: 0
    Price:
    $3.80
    Subtotal:
  • Rubber Fuel Tank Cap Gasket 3.375 Inch OD Replaces TM9002935 For Freightliner

    Rubber Fuel Tank Cap Gasket 3.375 Inch OD Replaces TM9002935 For Freightliner

    AUTOMANN USA

    $3.45
    Replacement Rubber Gasket for 572.1016 and 572.1018 Fuel CapsPrevent leaks and maintain proper sealing with this high-quality Fuel Tank Cap Gasket. Designed for Freightliner applications, its durable...
    03-06010001
    SKU:
    03-06010001
    Material Options:
    Rubber
    Truck Class:
    Heavy Duty
    Make:
    Freightliner
    Product Type:
    Fuel Tanks
    Ready To Ship:
    Yes
    $3.45
    Qty in Cart: 0
    Price:
    $3.45
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit 1/4 Turn Push-N-Twist Diesel Fuel Cap, Non-Locking For Freightliner W/ Rectangular Tank

    BESTfit 1/4 Turn Push-N-Twist Diesel Fuel Cap, Non-Locking For Freightliner W/ Rectangular Tank

    BESTFIT TRUCK PARTS

    $38.48
    1/4 Turn Non-Locking Fuel Cap By BESTfit Fits Freightliner With Rectangular Tanks Replaces 03-34466-000, 03-37017-000Need a new cap for your vented fuel tank? 4 State Trucks offers this Push-N-Twist...
    03-060306
    SKU:
    03-060306
    Truck Class:
    Heavy Duty
    Style Options:
    Non Vented
    Material Options:
    Aluminum
    Make:
    Freightliner
    Product Type:
    Fuel Tanks
    Ready To Ship:
    Yes
    $38.48
    Qty in Cart: 0
    Price:
    $38.48
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Aluminum Non-Vented Locking Push-N-Twist Fuel Cap Replaces 03-34466-002 For Freightliner W/ Rectangular Tank

    BESTfit Aluminum Non-Vented Locking Push-N-Twist Fuel Cap Replaces 03-34466-002 For Freightliner W/ Rectangular Tank

    BESTFIT TRUCK PARTS

    $50.99
    Locking Fuel Cap Push N Twist Style By BESTfit, Replaces 03-34466-002In the market for a non-vented locking fuel cap for your Freightliner? 4 State Trucks offers a reasonable option to replace OEM...
    03-060307
    SKU:
    03-060307
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Make:
    Freightliner
    Product Type:
    Fuel Tanks
    Ready To Ship:
    Yes
    Style Options:
    Locking
    Diameter Options:
    4 Inch
    $50.99
    Qty in Cart: 0
    Price:
    $50.99
    Subtotal:
  • Poly Fuel Cap Gasket 2.437 Inch OD Replaces TM9002935, TM90900034 For Freightliner

    Poly Fuel Cap Gasket 2.437 Inch OD Replaces TM9002935, TM90900034 For Freightliner

    AUTOMANN USA

    $3.81
    Polyurethane Fuel Cap Gasket ReplacementMake sure your fuel cap has a reliable seal to prevent leakage and ensure proper function with this poly gasket. It has an inner diameter of 2.437 inches, an...
    03-06010005
    SKU:
    03-06010005
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Make:
    Freightliner
    Product Type:
    Fuel Tanks
    $3.81
    Qty in Cart: 0
    Price:
    $3.81
    Subtotal:
  • 2 Inch Aluminum Non-Locking, Female, Vented Fuel Cap With 11-1/2 Threads

    2 Inch Aluminum Non-Locking, Female, Vented Fuel Cap With 11-1/2 Threads

    VELVAC

    $89.99
    2 Inch Non-Locking Fuel Cap, VentedReplace a poorly fitting fuel cap with this premium quality non-locking Velvac Fuel cap that is precision designed to deliver OE fit and functionality. It will...
    09-060300002
    SKU:
    09-060300002
    Truck Class:
    Universal
    Diameter Options:
    2 Inch
    Material Options:
    Aluminum
    Make:
    Universal Items
    Product Type:
    Fuel Tanks
    $89.99
    Qty in Cart: 0
    Price:
    $89.99
    Subtotal:
  • FREE SHIPPING OVER $249
    2 Inch 11.5 TPI Brass Non-Vented Locking Fuel Cap

    2 Inch 11.5 TPI Brass Non-Vented Locking Fuel Cap

    VELVAC

    $79.99
    2 inch Locking Fuel Cap, Non- VentedKeep your fuel tank secure with this 2-inch non-vented brass fuel cap. Locks tight to prevent leaks and tampering. Ideal for various vehicles and equipment. Rest...
    29-060315
    SKU:
    29-060315
    Diameter Options:
    2 Inch
    Truck Class:
    Heavy Duty
    Style Options:
    Non Vented
    Material Options:
    Brass
    Make:
    Universal Items
    Product Type:
    Fuel Tanks
    Ready To Ship:
    Yes
    $79.99
    Qty in Cart: 0
    Price:
    $79.99
    Subtotal:
  • Chrome Plastic Fuel Cap Locking Cover For Freightliner

    Chrome Plastic Fuel Cap Locking Cover For Freightliner

    UNITED PACIFIC

    $9.22
    Freightliner Chrome Locking Fuel Cap Cover ReplacementThis chrome fuel cap cover locks securely and fits various Freightliner models and years. Made from durable injection-molded plastic, it features...
    03-06010017
    SKU:
    03-06010017
    Finish Options:
    Chrome-Plated
    Product Type:
    Fuel Tanks
    Material Options:
    Plastic/Poly
    Make:
    Freightliner
    $9.22
    Qty in Cart: 0
    Price:
    $9.22
    Subtotal:
  • FREE SHIPPING OVER $249
    3 Inch Chrome Fuel Cap Cover- Push On For Freightliner

    3 Inch Chrome Fuel Cap Cover- Push On For Freightliner

    AUTOMANN USA

    $12.71
    Chrome Fuel Cap Cover- 1.625 Inch Height Fits FreightlinerThis chrome push-on fuel cap cover is 1.625 inches tall and fits Freightliner fuel caps with a 3-inch, quarter-turn lock style. It is sold...
    03-060319
    SKU:
    03-060319
    Truck Class:
    Heavy Duty
    Make:
    Freightliner
    Product Type:
    Fuel Tanks
    Ready To Ship:
    Yes
    $12.71
    Qty in Cart: 0
    Price:
    $12.71
    Subtotal:
  • FREE SHIPPING OVER $249
    DEF Cap For Medium & Heavy Duty - Replaces 04-27757-000 For Freightliner Cascadia

    DEF Cap For Medium & Heavy Duty - Replaces 04-27757-000 For Freightliner Cascadia

    DAYTON / DORMAN

    $31.69
    Diesel Emissions Fluid Cap Fits Freightliner* High Quality DEF Fuel Tank Cap* With A Tether* Dimensions:  - 2.0 Inch Major Diameter  - 1.5 Inch Minor Diameter* Sold Individually* Made In USA*...
    03-060310
    SKU:
    03-060310
    Truck Class:
    Heavy Duty
    Make:
    Freightliner
    Product Type:
    Fuel Tanks
    Color:
    Blue
    Location:
    Made In USA
    Material Options:
    Plastic/Poly
    Ready To Ship:
    Yes
    $31.69
    Qty in Cart: 0
    Price:
    $31.69
    Subtotal:
  • 3 Inch Aluminum Female Vented Locking Cap For Freightliner

    3 Inch Aluminum Female Vented Locking Cap For Freightliner

    VELVAC

    $116.99
    3 Inch Locking Fuel CapThe Aluminum Locking Fuel Cap uses a patented Loc-Gard system to keep out moisture and contaminants. It comes with a safety chain and crossbar and includes two keys.* High...
    03-060318
    SKU:
    03-060318
    Diameter Options:
    3 Inch
    Material Options:
    Aluminum
    Truck Class:
    Heavy Duty
    Make:
    Freightliner
    Product Type:
    Fuel Tanks
    Location:
    Made In USA
    Style Options:
    Female
    $116.99
    Qty in Cart: 0
    Price:
    $116.99
    Subtotal:
  • Heavy Duty Blue Plastic DEF Cap Replaces 04-27757-000 For Freightliner

    Heavy Duty Blue Plastic DEF Cap Replaces 04-27757-000 For Freightliner

    DAYTON / DORMAN

    $22.80
    Heavy Duty Blue Plastic DEF Cap* High Quality Diesel Emissions Fluid Filler Cap* Blue Plastic* Sold Individually* Warranty On Diesel Emissions Fluid Filler Cap Against Defects In Workmanship &...
    03-060320
    SKU:
    03-060320
    Truck Class:
    Heavy Duty
    Make:
    Freightliner
    Product Type:
    Fuel Tanks
    $22.80
    Qty in Cart: 0
    Price:
    $22.80
    Subtotal:
  • Chrome Plastic Non- Locking Fuel Cap Cover For Freightliner

    Chrome Plastic Non- Locking Fuel Cap Cover For Freightliner

    UNITED PACIFIC

    $11.54
    Chrome Fuel Cap CoverThis Freightliner Non-Locking Fuel Cap Cover is simple to install with its pre-applied double-sided tape. It's constructed with quality injection-molded plastic for lasting...
    03-06010006
    SKU:
    03-06010006
    Finish Options:
    Chrome-Plated
    Material Options:
    Plastic/Poly
    Truck Class:
    Heavy Duty
    Make:
    Freightliner
    Product Type:
    Fuel Tanks
    Ready To Ship:
    Yes
    $11.54
    Qty in Cart: 0
    Price:
    $11.54
    Subtotal:
  • BESTfit Locking Push-N-Twist Fuel Cap With Thermal Relief -10 Pack For Freightliner W/ Rectangular Tank

    BESTfit Locking Push-N-Twist Fuel Cap With Thermal Relief -10 Pack For Freightliner W/ Rectangular Tank

    BESTFIT TRUCK PARTS

    $748.99
    10 Pack Of Fuel Tank Cap By BESTfit Fits Freightliner With Rectangular Tanks - Replaces 03-34466-002 & 03-37017-002The High-Quality Non-Locking Fuel Caps offer ease and reliability with a simple...
    03-060307K10
    SKU:
    03-060307K10
    Truck Class:
    Heavy Duty
    Style Options:
    Non Vented
    Material Options:
    Aluminum
    Make:
    Freightliner
    Product Type:
    Fuel Tanks
    Ready To Ship:
    Yes
    $748.99
    Qty in Cart: 0
    Price:
    $748.99
    Subtotal:
  • BESTfit 1/4 Turn Push-N-Twist Diesel Fuel Caps, Non-Locking -10 Pack For Freightliner W/ Rectangular Tank

    BESTfit 1/4 Turn Push-N-Twist Diesel Fuel Caps, Non-Locking -10 Pack For Freightliner W/ Rectangular Tank

    BESTFIT TRUCK PARTS

    $364.99
    10 Pack Of 1/4 Turn Fuel Tank Caps By BESTfit Fits Freightliner With Rectangular Tanks - Replaces 03-34466-000 & 03-37017-000These non-vented 1/4 turn fuel caps are designed to fit Freightliner...
    03-060306K10
    SKU:
    03-060306K10
    Truck Class:
    Heavy Duty
    Style Options:
    Non Vented
    Material Options:
    Aluminum
    Make:
    Freightliner
    Product Type:
    Fuel Tanks
    Ready To Ship:
    Yes
    $364.99
    Qty in Cart: 0
    Price:
    $364.99
    Subtotal:
  • 4 Inch Aluminum Locking Fuel Cap

    4 Inch Aluminum Locking Fuel Cap

    AFTERMARKET

    $366.99
    4 Inch Fuel Cap Locking-8 NPSF Thread* High Quality Locking Fuel Cap* Aluminum* 4 Inch- 8 NPSF Thread* Vented * Made In USA* Sold Individually* Warranty On Locking Fuel Caps Against Defects In...
    09-06010001
    SKU:
    09-06010001
    Material Options:
    Aluminum
    Product Type:
    Fuel Tanks
    Make:
    Universal Items
    $366.99
    Qty in Cart: 0
    Price:
    $366.99
    Subtotal:
  • CSM Black Aluminum Alloy Water Tank Cap

    CSM Black Aluminum Alloy Water Tank Cap

    CHROME SHOP MAFIA

    $16.47
    38MM Water Tank Cap By Chrome Shop MafiaSafeguard your truck's fluids with the Chrome Shop Mafia Black Aluminum Alloy Water Tank Cap. Constructed from heavy-duty aluminum alloy weld billet, it fits...
    09-0707002
    SKU:
    09-0707002
    Ready To Ship:
    Yes
    Color:
    Black
    Make:
    Universal Items
    Product Type:
    Fuel Tanks
    Material Options:
    Aluminum
    $16.47
    Qty in Cart: 0
    Price:
    $16.47
    Subtotal:
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Maximize your hauling power with the Freightliner Columbia 112/120 Fuel Tank Caps product lineup. This comprehensive collection offers a variety of fuel caps, gaskets, and anti-siphon systems designed specifically for Freightliner's popular Columbia truck models. From locking and non-locking caps to thermal relief and vented options, you'll find the perfect solution to keep your fuel secure and your engine running smoothly. Upgrade your Columbia's fuel system with durable, high-quality components that provide the reliability and convenience you need on the road. Whether you're looking to replace worn-out parts or enhance your fuel system's performance, this product lineup has you covered.

Frequently Asked Questions About Freightliner Columbia 112/120 Fuel Tank Caps

Will this fuel tank cap fit my Freightliner Columbia 112 or 120?

Fuel tank caps for the Columbia 112 and 120 are generally designed to match the OEM thread pattern and neck diameter used on these models, but fitment can vary depending on the tank manufacturer and the year of your truck. Always check the listed specifications, such as thread size and cap style, against the cap currently on your tank before ordering to make sure you get a proper fit.

What material and finish options are available for these fuel caps?

Fuel tank caps for the Columbia are commonly offered in chrome-plated steel or aluminum, with some options featuring a plain or polished finish. Chrome caps are popular for their appearance and resistance to corrosion, while aluminum caps offer a lighter weight alternative. Choose the finish that best matches the rest of your fuel tank hardware and your truck's overall look.

Is this cap vented or non-vented, and does that matter?

Yes, it matters. Vented caps allow air to enter the tank as fuel is drawn out, which helps maintain proper fuel flow and prevents a vacuum from forming inside the tank. Non-vented caps are used on tanks that have a separate venting system built in elsewhere. Installing the wrong type can cause fuel delivery issues or affect engine performance, so confirm which type your truck originally used before replacing it.

Does this fuel cap include a locking feature to prevent fuel theft?

Some fuel tank caps for the Columbia are available with locking mechanisms, while others are non-locking. If fuel theft or security is a concern, look for a locking cap option and be sure it is compatible with your tank's neck design. Non-locking caps are typically easier to install and remove but offer no theft deterrent.

How do I install a replacement fuel tank cap correctly?

Most Columbia fuel tank caps thread directly onto the tank neck and simply need to be turned clockwise until snug, without over-tightening. Make sure any rubber gasket or seal on the cap is seated properly to prevent leaks or moisture intrusion. If your cap includes a tether or cable to prevent loss, secure it to the designated mounting point on the tank or frame before use.


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