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Peterbilt Anti-Siphon w/Adapter & 2 1/2" Fill Neck. Length 6 3/4"
Peterbilt Anti-Siphon w/Adapter & 2 1/2" Fill Neck. Length 6 3/4" Fuel Tank Anti Siphon Fuel Tank Anti Siphon Don′t Lose Your Fuel. It's so Easy to Install

Peterbilt Fuel Security Anti-Siphon w/Adapter 

Made In USA
Price: $54.95

Payment Options

Worrying about your fuel getting stolen? Install the Fuel Tank Anti-Siphons.

Top Features:

  • For 2 1/2" Inside Diameter Fuel Neck; 6 3/4" Length; No tabs"
  • Prevent Thieves from Stealing your Fuel
  • Applies to Heavy-Duty Truck Diesel Fuel Tank
  • Easy Installation
AvailabilityOut of Stock
Returns30 days w/ 15% Restocking Fee
WarrantyLife of Fuel Tank, Installed In.
ShippingSee Cart
Weight6 lbs
ManufacturerFuel Tank Accessories
Model No.FTA-P-67
  • Shipping GuideShipping Guide
  • Peterbilt InstallationPeterbilt Installation Manual

For accurate measurement, it is essential to measure the Inside Diameter (ID) of Fuel Cap.

Install Anti-Siphon for your Peterbilt Diesel Fuel Tanks to prevent thieves from stealing your fuel. Applies to Heavy Duty Fuel Tanks. Easy to Install and Extremely secure.

Example Proper Fill Neck Measurement

Example Proper Fill Neck Measurement

Always make sure and if the Tank is either Vented or non-Vented in order to spec correct Vented or Non-Vented Cap. (note: a Vented Cap is made to work with a non-Vented Tank; it is also safe to use on a Diesel Fuel Tank that is already Vented) a non-Vented Tank Must have a Vented Cap to operate properly.

The inside diameter (ID) of Caps used with Low-Sulfur labeled Diesel Fuel Tanks are smaller and have different treads than Caps used with Diesel Fuel Tanks that have no Low Sulfur Label. (See the Volvo Description on the above PDF File as an example)

All Caps are Threaded Female style. (except the Peterbilt Lever Style and Freightliner Cam-Cap Style) Some Older Fuel Tank fill necks (pre 2000) may have a different size and thread than current Tanks.

Though Steel Tanks are not as common in the HD Truck Industry as Aluminum, it is recommended to clarify whether the tank is Aluminum or Steel.

NPSM (National Pipe Straight Medium) Threaded Caps will not fit NPSL (National Pipe Straight Loose) or NPT Fill Neck Threads. However, NPSL will fit NPSM threaded Fill Necks.


  • For Fill Necks with 2 1/2" Inside Diameter
    • Siphon Length: 6 3/4"
    • FTA-P-67 & FTA-P-67 S
    • No Tabs
    • No Gasket
    • Installation Kit with Allen Wrench included

  • Easy to Install. See Install Guide

Other Features:

  • Designed to Block the most determined Fuel Thief
  • Inexpensive & Effective Solution to Help Prevent Fuel Theft
  • Made from High Quality Materials