Leak Defender® + Anti-Siphon for Peterbilts

5.00 out of 5 based on 1 customer rating
(1 customer review)


A 2-Piece Fuel Neck Adapter, Collar & Cap, Which Creates a NEW Sealing Surface & Stops Leaking Fuel Cap Issues on Peterbilts! 

Also Included is an Anti-Siphon Tube to Prevent Diesel Fuel Theft.

NOTE: If you have dual tanks, you will need to purchase 2.

Green_Checkmark Stop Leaking Fuel CapsGreen_Checkmark Save on Repair Costs
Green_Checkmark No DowntimeGreen_Checkmark Stay DOT-Complaint
Green_Checkmark Stop Diesel Fuel TheftGreen_Checkmark 100% Money Back Guarantee

In stock (can be backordered)

SKU: LEA-KIT-P03 Categories: ,
Get 20% OFF When You Buy 10 or More.


The Leak Defender® for Peterbilt Trucks is more then just a shiny new cap….it is a 2-piece system consisting of a collar and cap which creates a completely new sealing surface. The Leak Defender® collar attaches to your existing fuel neck, sealing along the outer perimeter, away from the inner perimeter which is prone to nicks and abrasions. The Leak Defender® cap attaches to the collar and is made with the same billet aluminum to withstand the wear and tear of everyday fueling. Also included is an anti-siphon tube to prevent diesel fuel theft.

NOTE: If you have dual tanks, you will need to purchase 2.

2 Year Warranty100% Satisfaction Guarantee

Additional information

Weight2.39 lbs
Dimensions10.5 x 5.25 x 5.25 in
Compatible With

All Peterbilt Models


Leak Defender®


Billet Aluminum







1 review for Leak Defender® + Anti-Siphon for Peterbilts

  1. 5 out of 5

    We purchased 3 Leak Defenders at the Kentucky Truck Show and they have been on our trucks for 3 weeks. We are very impressed with them. No leaks!!! Great product. We will be purchasing these for our future trucks. Would recommend to anyone.

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