Kenworth T600 Fuel Tank Caps

Need a new fuel tank cap for your Kenworth T600? We've got a variety of locking, non-locking, vented, and non-vented options. Shop our collection online now!

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FREE SHIPPING OVER $249

BESTfit 3.5 Inch Aluminum Vented Non Locking Fuel Cap Replaces A03-12927-4, K071-398 For Kenworth

BESTFIT TRUCK PARTS

MSRP:

$55.99

Was:

3.5 Inch Vented Fuel Cap- Non Locking By BESTfitKeep your Kenworth fuel system protected with the BESTfit 3.5 Inch Aluminum Vented Non-Locking Fuel Cap, designed to replace A03-12927-4 and K071-398...

02-060300

SKU:

02-060300

Truck Class:

Heavy Duty

Material Options:

Aluminum

Make:

Kenworth

Product Type:

Fuel Tanks

Diameter Options:

3 1/2 Inch

Ready To Ship:

Yes

Style Options:

Vented

Location:

Made In USA

MSRP:

$55.99

Was:

Qty in Cart: 0

Price:

MSRP:

$55.99

Was:

Subtotal:
FREE SHIPPING OVER $249

BESTfit 3.5 Inch Aluminum Locking Fuel Cap Replaces 572.1036 For Kenworth

BESTFIT TRUCK PARTS

MSRP:

$61.99

Was:

3.5 Inch Fuel Cap- Locking By BESTfitThis locking fuel cap is made of aluminum with a mill finish, and comes with a safety chain and crossbar. It meets the 49 CFR 393.67 requirements for vehicles...

02-060301

SKU:

02-060301

Truck Class:

Heavy Duty

Material Options:

Aluminum

Make:

Kenworth

Product Type:

Fuel Tanks

Ready To Ship:

Yes

Finish Options:

Mill Finish

Diameter Options:

3 3/8 Inch

Style Options:

Locking

Location:

Made In USA

MSRP:

$61.99

Was:

Qty in Cart: 0

Price:

MSRP:

$61.99

Was:

Subtotal:
Locking Fuel Cap Cover For Kenworth, International, Mack, Volvo W/ 3 Inch Thread On Caps

AFTERMARKET

MSRP:

$101.99

Was:

Locking Fuel Cap Covers For 3 Inch CapsThis Locking Fuel Cap Cover is the ultimate solution to protect against fuel theft. It locks securely over your existing fuel cap and spins freely when closed...

29-060324

SKU:

29-060324

Material Options:

Aluminum

Truck Class:

Heavy Duty

Make:

Volvo

Make:

Kenworth

Make:

Mack

Make:

International

Product Type:

Fuel Tanks

MSRP:

$101.99

Was:

Qty in Cart: 0

Price:

MSRP:

$101.99

Was:

Subtotal:
Aluminum Leak Defender Fuel Cap and Anti-Siphon Kit For Kenworth

HEAVY TRUCK SOLUTIONS

MSRP:

$375.99

Was:

Kenworth 3-Piece Leak Defender Fuel Cap and Anti-Siphon KitThe Kenworth Leak Defender Anti-Siphon Kit is a three-piece system with a collar, fuel cap, and anti-siphon tube. It helps fix fuel cap...

02-06010022

SKU:

02-06010022

Product Type:

Fuel Tanks

Truck Class:

Heavy Duty

Make:

Kenworth

Material Options:

Aluminum

Ready To Ship:

Yes

MSRP:

$375.99

Was:

Qty in Cart: 0

Price:

MSRP:

$375.99

Was:

Subtotal:
FREE SHIPPING OVER $249

CSM Non-Vented Lever Lock Flush Fuel Tank Cap Assembly

CHROME SHOP MAFIA

MSRP:

$190.99

Was:

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

MSRP:

$190.99

Was:

Qty in Cart: 0

Price:

MSRP:

$190.99

Was:

Subtotal:
FREE SHIPPING OVER $249

2 Inch Brass 11.5 TPI Non-Vented Fuel Cap

VELVAC

MSRP:

$45.16

Was:

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

MSRP:

$45.16

Was:

Qty in Cart: 0

Price:

MSRP:

$45.16

Was:

Subtotal:
Billet Aluminum Fuel Cap Cover With Ribs For Kenworth

LIFETIME NUT COVERS

MSRP:

$264.99

Was:

Fuel Cap Cover With RibsMake your fuel caps appear new with this pair of covers with ribs. They easily fit on top of the caps securely and come with screws for easy installation. The covers are made...

02-060310

SKU:

02-060310

Location:

Made In USA

Truck Class:

Heavy Duty

Material Options:

Aluminum

Make:

Kenworth

Finish Options:

Chrome-Plated

Product Type:

Fuel Tanks

Ready To Ship:

Yes

MSRP:

$264.99

Was:

Qty in Cart: 0

Price:

MSRP:

$264.99

Was:

Subtotal:
3.5 OD X 2.85 Inch ID Fuel Cap Gasket

AUTOMANN USA

MSRP:

$3.80

Was:

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

MSRP:

$3.80

Was:

Qty in Cart: 0

Price:

MSRP:

$3.80

Was:

Subtotal:
Polished Billet Aluminum Fuel Cap Cover - Pair For Kenworth

LIFETIME NUT COVERS

MSRP:

$284.99

Was:

Aluminum Fuel Cap Cover Mounts W/ 3 Set ScrewsThese smooth fuel cap covers by Lifetime Nut Covers fit various Kenworth style fuel tanks. They are made with polished billet aluminum and mount with...

02-060304

SKU:

02-060304

Location:

Made In USA

Truck Class:

Heavy Duty

Material Options:

Aluminum

Make:

Kenworth

Product Type:

Fuel Tanks

Shape Options:

Round

MSRP:

$284.99

Was:

Qty in Cart: 0

Price:

MSRP:

$284.99

Was:

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

VELVAC

MSRP:

$89.99

Was:

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

MSRP:

$89.99

Was:

Qty in Cart: 0

Price:

MSRP:

$89.99

Was:

Subtotal:
Chrome Plastic Fuel Cap Covers For Kenworth

UNITED PACIFIC

MSRP:

$9.22

Was:

Choose Option(s) to see description.Fitment* Fits Kenworth C500 1972 thru 2024* Fits Kenworth Cabover 1961 thru 2002* Fits Kenworth K100 Cabover 1961 thru 1967* Fits Kenworth K100C 1968 thru 1983*...

PPR_299099

SKU:

PPR_299099

Product Type:

Fuel Tanks

Truck Class:

Heavy Duty

Make:

Kenworth

Make:

Peterbilt

MSRP:

$9.22

Was:

Qty in Cart: 0

Price:

MSRP:

$9.22

Was:

Subtotal:
FREE SHIPPING OVER $249

2 Inch 11.5 TPI Brass Non-Vented Locking Fuel Cap

VELVAC

MSRP:

$79.99

Was:

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

MSRP:

$79.99

Was:

Qty in Cart: 0

Price:

MSRP:

$79.99

Was:

Subtotal:
4 Inch Aluminum Locking Fuel Cap

AFTERMARKET

MSRP:

$366.99

Was:

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

MSRP:

$366.99

Was:

Qty in Cart: 0

Price:

MSRP:

$366.99

Was:

Subtotal:
CSM Black Aluminum Alloy Water Tank Cap

CHROME SHOP MAFIA

MSRP:

$16.47

Was:

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

MSRP:

$16.47

Was:

Qty in Cart: 0

Price:

MSRP:

$16.47

Was:

Subtotal:

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Protecting your fuel is just as important as how much you carry. This lineup of fuel tank caps for the Kenworth T600 gives you solid options to keep your fuel system secure, sealed, and running right. Whether you 're after a basic non-locking cap, a vented model for proper airflow, or a tamper-resistant locking cap to guard against theft and siphoning there's a cap here that fits your needs. These caps are built from tough materials like aluminum and brass, so they hold up to the elements, vibration, and daily wear. A good cap does more than just close the tank it helps prevent leaks, keeps contaminants out, and ensures your fuel stays where it belongs. That means better efficiency, less waste, and more peace of mind when you're parked overnight or fueling up at a busy stop. If you're replacing a worn-out cap or upgrading for extra security, these fuel tank caps are a simple fix with big benefits. Lock it down, seal it tight, and keep your Kenworth T600 ready for the next run.

Frequently Asked Questions About Kenworth T600 Fuel Tank Caps

Will this fuel tank cap fit my Kenworth T600?

Fuel tank caps vary by neck diameter, thread pattern, and locking mechanism, so it is important to check your truck's specific tank neck size before ordering. Kenworth T600 models can have different fuel tank setups depending on year and configuration, so measuring your current cap or comparing part numbers is the most reliable way to confirm a proper fit.

Are these fuel tank caps locking or non-locking?

We carry both locking and non-locking fuel tank caps. Locking caps require a key and help deter fuel theft, while non-locking caps offer a simpler, quicker way to seal the tank. Be sure to check the product listing to confirm which style you are purchasing, since the two are not interchangeable without also swapping mounting hardware in some cases.

What material are these fuel tank caps made from?

Most fuel tank caps for the Kenworth T600 are constructed from durable materials such as chrome-plated steel or aluminum, designed to withstand daily exposure to road grime, fuel vapors, and weather. Chrome finishes also help the cap resist corrosion and maintain a clean look over time.

How do I know if I need a vented or non-vented cap?

Fuel tank caps can be vented or non-vented depending on how your truck's fuel system is designed to release pressure. Installing the wrong type can affect fuel delivery or cause pressure issues inside the tank. If you are unsure which type your T600 originally came with, check your old cap for small vent holes or contact our team for help identifying the correct style.

How do I install a replacement fuel tank cap?

Installation typically involves removing the old cap by unscrewing or unlocking it from the tank neck, then threading or securing the new cap in its place. Most replacement caps are designed to be a direct swap with no special tools required, but it is a good idea to double check the seal or gasket is seated properly to prevent fuel vapor leaks.