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Fuel Tank Security: Locking Caps & Anti-Siphon for Trucks 
Has Someone Been Stealing Your Fuel? Secure Your Fuel Now!
Example Proper Measurement
Is saving $20 worth the potential loss of $1,000 in fuel?
Anti-Siphons & Locking Fuel Caps install easily in Heavy & Medium Duty, Volvo, Mack, International, Kenworth, Freightliner, Reefer, and Peterbilt diesel fuel tank necks.
Can also be used in many buses and foreign Class 7 Trucks. Inexpensive and Effective solution to prevent fuel loss from thieves.
Add that extra Security with a Locking Fuel Cap.
Made in the USA, using the finest quality materials. Anti-Siphons will install in male threaded fuel necks at least 3" long. Locking Fuel Caps for most Trucks.
Locking Fuel Cap For Trucks
Reefer, International MD, & Ford 650/750 Locking Fuel Cap
Price From: $ 60.00
- Availability:
- In Stock
- Warranty:
- 90 Days
- Manufacturer:
- Fuel Tank
Accessories
- Model #:
- FTA-C-02
FTA-C-02C
Reefer, International MD, & Ford Locking Fuel Cap
- For Reefer, International MD, & Ford 650/750
- Locking for 2" Schedule 40/80 Neck
- 2.0" Aluminum Cap Assembly
- 8.00" Chain & 6.50" Bail
- 220°F Thermal Relief (Over Temp) Locking
Volvo, Mack, International Locking Fuel Cap
Price From: $ 52.50
- Availability:
- In Stock
- Warranty:
- 90 Days
- Manufacturer:
- Fuel Tank
Accessories
- Model #:
- FTA-C-722L
FTA-C-722LC
FTA-C-69
FTA-C-70
FTA-C-80
FTA-C-51C
Volvo, Mack, International Locking Fuel Cap
- For Volvo, Mack, and International
- Aluminum 3.0" Cap Assembly
- For Diesel Fuel Tanks
- NOT Labeled "Low Sulfur")
- Labeled "Low Sulfur")
Note: When you Order a pair of Locking Fuel Caps, they will be Keyed Alike (use the same key).
Borg Warner Tank Style
Price From: $ 48.00
- Availability:
- In Stock
- Warranty:
- 90 Days
- Manufacturer:
- Fuel Tank
Accessories
- Model #:
- FTA-C-74
FTA-C-74C
For Borg Warner Tank Style
Secure and keep your fuel from those who would rob you of your livelihood.
Features:
- 220°F Thermal Relief
- 2.5-8 UN (United National) Aluminum Cap Assembly
- 8.00" Chain & 6.50" Bail
Note: When you Order a pair of Locking Fuel Caps, they will be Keyed Alike (use the same key).
Freightliner M2 Locking Fuel Cap
Price From: $ 66.75
- Availability:
- In Stock
- Warranty:
- 90 Days
- Manufacturer:
- Fuel Tank
Accessories
- Model #:
- FTA-C-13
FTA-C-13C
For Freightliner M2
The FTA-C-13/FTA-C-13C is a threaded locking fuel cap that is constructed of high grade aluminum and fits Freightliner M2 class 7 Trucks
Features:
- Freightliner M2 2.5" - 8 Aluminum Cap Assembly
- Stamped w/ "DIESEL FUEL ONLY"
- 8.00" Chain & 6.50" Bail
Note: When you Order a pair of Locking Fuel Caps, they will be Keyed Alike (use the same key).
Freightliner Locking Fuel Cap
Price From: $ 81.00
- Availability:
- In Stock
- Warranty:
- 90 Days
- Manufacturer:
- Fuel Tank
Accessories
- Model #:
- FTA-C-93
FTA-C-93C
For Freightliner
The Freightliner Locking Fuel Cap features an 8.00" chain & 6.50" bail with 1/4 turn non-threaded fill necks.
Features:
- 8.00" Chain & 6.50" Bail
- 1/4 Turn Aluminum Cap Assembly
- 220°F Thermal Relief (Over Temp) Locking
Note: When you Order a pair of Locking Fuel Caps, they will be Keyed Alike (use the same key).
Kenworth Locking Fuel Cap
Price From: $ 58.50
- Availability:
- In Stock
- Warranty:
- 90 Days
- Manufacturer:
- Fuel Tank
Accessories
- Model #:
- FTA-C-442L
FTA-C-442LC
FTA-C-50
FTA-C-50C
For Kenworth
Fuel locking cap that fits Kenworth. It features 250°F thermal relief.
You can also choose chrome or non-chrome.
Features:
- 5.5 NS (Non-Standard)
- 3.5" Aluminum Cap Assembly
- 8.0" Chain & 6.50" Bail
Note: When you Order a pair of Locking Fuel Caps, they will be Keyed Alike (use the same key).
4" Threaded Fuel Tank Necks Locking Fuel Cap
Price From: $ 64.50
- Availability:
- In Stock
- Warranty:
- 90 Days
- Manufacturer:
- Fuel Tank
Accessories
- Model #:
- FTA-C-04
FTA-C-64
FTA-C-23
For 4" Threaded Fuel Tank Necks
Fuel locking caps that fit almost any type of vehicle or Fuel Tank, that has a 4" threaded fuel tank necks.
Features:
- 255° & 190°F Thermal with Pressure Relief
- 4.0" Aluminum Cap Assembly
- 8 NPSM / LOCKING (ID of Cap 4.35")
Note: When you Order a pair of Locking Fuel Caps, they will be Keyed Alike (use the same key).
Peterbilt Locking Fuel Cap
Price From: $ 73.50
- Availability:
- In Stock
- Warranty:
- 90 Days
- Manufacturer:
- Fuel Tank
Accessories
- Model #:
- FTA-C-67-P
FTA-C-67-PP
For Peterbilt
Peterbilt locking fuel cap is made of heavy duty aluminum.
It features pressure relief.
Features:
- Locking for 4" Schedule 40/80 Neck
- 4.0" Aluminum Cap Assembly
- Pressure Relief (Over Pressure)
Note: When you Order a pair of Locking Fuel Caps, they will be Keyed Alike (use the same key).
Truck Fuel Tank Anti-Siphons - Help Prevent Fuel Theft
Volvo, Mack, International Anti-Siphon Security
Price: $ 21.95
- Availability:
- In Stock
- Warranty:
- Life of Fuel Tank, Installed In.
- Manufacturer:
- Fuel Tank
Accessories
- Model #:
- FTA-3-7
FTA-25-675
For Volvo, Mack, International
Get an Anti Siphons and Prevent a Thief from Stealing your Fuel.
It's Easy to Install. Over 80,000 are in Use!
Features:
- Available in Two Sizes
- For 3" Inside Diameter; 7" Length; Tabs at 3 3/4"
- For 2 1/2" Inside Diameter; 6 3/4" Length; Tabs at 3 3/4"
- A Must Have for Every Trucker
- Prevent Fuel Thieves
- Easy Installation
Kenworth Anti-Siphon Security
Price: $ 21.95
- Availability:
- In Stock
- Warranty:
- Life of Fuel Tank, Installed In.
- Manufacturer:
- Fuel Tank
Accessories
- Model #:
- FTA-25-7
FTA-2-7K
For Kenworth
Worrying about your fuel getting stolen?
Install the Fuel Tank Anti-Siphons.
Features:
- Available in Two Sizes
- For 2 1/2" Inside Diameter; 7" Length; Tabs at 1/2" & 2 3/4"
- For 2" Inside Diameter; 7" Length; Tabs at 3 3/4"
- For Heavy and Medium Duty Fuel Tanks
- Designed to Prevent Fuel Thieves
- Made of ASTM 6061
Freightliner & Medium Duty Class 7 Anti-Siphon Security
Price from: $ 21.95
- Availability:
- In Stock
- Warranty:
- Life of Fuel Tank, Installed In.
- Manufacturer:
- Fuel Tank
Accessories
- Model #:
- FTA-225-7
FTA-2-7
For Freightliner & Medium Duty Class 7
Secure your fuel with easy to install Made in USA Anti-Siphons.
Designed to block thieves from stealing your fuel.
Features:
- Available in Two Sizes
- For 2 1/4" Inside Diameter; 7" Length; Tabs at 3/4" & 2 3/4"
- For 2" Inside Diameter; 7" Length; Tabs at 2 3/8"
- For Heavy & Medium-Duty Fuel Tanks
- Prevents Siphoning of Your Fuel.
Reefer & Medium-Duty International Class 7 Anti-Siphon Security
Price from: $ 21.95
- Availability:
- In Stock
- Warranty:
- Life of Fuel Tank, Installed In.
- Manufacturer:
- Fuel Tank
Accessories
- Model #:
- FTA-187-75
For Reefer & Medium Duty International Class 7
Protect your Fuel Tanks from Fuel Thieves with Anti-Siphons. Made from the finest quality material.
Features:
- For 1 7/8" Inside Diameter; 7" Length; Tabs at 3 3/4"
- Applies to Medium-Duty Truck Fuel Tanks
- Prevents Fuel Theft
- Easy to Install
Anti-Siphon for Fuel Tank w/4" Fill Neck Length 7" Security
Price from: $ 25.50
- Availability:
- In Stock
- Warranty:
- Life of Fuel Tank, Installed In.
- Manufacturer:
- Fuel Tank
Accessories
- Model #:
- FTA-4-9
For Fuel Tank w/4" Fill Neck Length 7"
Guaranteed for the life of the fuel tank they are installed. Prevent thieves from stealing your fuel before it's too late.
Features:
- For 4" Inside Diameter; 7" Length; Tabs at 4 1/2"
- Prevents Fuel Theft
- Easy to install
- Extremely Secure
- Applies to Heavy Duty Diesel Fuel Tank
Peterbilt Anti-Siphon w/Adapter Security
Price from: $ 54.95
- Availability:
- Out of Stock
- Warranty:
- Life of Fuel Tank, Installed In.
- Manufacturer:
- Fuel Tank
Accessories
- Model #:
- FTA-P-67
For Peterbilt Anti-Siphon w/Adapter
No more worries about your fuel being stolen. Protect your Fuel Tank with Anti-Siphon to prevent fuel theft.
Features:
- For 2 1/2" Inside Diameter; 6 3/4" Length; No Tabs"
- Designed to foil fuel thief
- Applies to Heavy Duty Fuel Tanks
- Designed for Perterbilt Install