2-PIECE SCREW-ON FUEL NECK +

FUEL CAP

The Leak Defender ® is a 2-piece fuel neck repair/replacement system consisting of a new and improved fuel neck + fuel cap. We designed it to stop fuel cap leaks for good. 100% money back guaranteed! Even if your fuel neck threads are completely worn/stripped and fuel caps no longer seal, it will work! In fact, this is why we invented it.

It is machined from wear-resistant 6160 aircraft billet aluminum allowing it to be made with a high degree of precision and with the strength to withstand everyday wear and tear. It should easily last the lifetime of your truck. It also features premium 1/4″ thick Buna-N/Nitrile o-rings and deep fuel cap + neck threads.

NEW & IMPROVED FUEL NECK –

REPLACES OEM FUEL NECK

The star of the show, what stops leaks for good, is the Leak Defender® fuel neck replacement. It has a thick 1/4″ Buna-N/Nitrile o-ring underneath which seals to your OEM fuel neck when tightened with a strap wrench. It is sealed along the outer perimeter, away from the inner perimeter which is prone to wear and tear from everyday fueling. It is securely fastened with set screws. No welding or downtime required.

We have improved upon the OEM design of a big rig’s fuel neck by machining the Leak Defender® from wear-resistant 6160 aircraft billet aluminum and engineering deeper threads.

NEW & IMPROVED

FUEL CAP

Leak Defender® also includes a new and improved fuel cap that not only looks impressive but outperforms any fuel cap on the market. With attributes like wear-resistant 6160 aircraft billet aluminum, a thicker 1/4″ Buna-N/Nitrile o-ring and deeper threads, it’s sure to impress. In fact, we 100% money-back guarantee it.

It also features a 10″ safety chain and 6″ bail to help prevent loss during refuel.

BENEFITS

Stop Fuel Cap Leaks on Kenworth, Peterbilt & Freightliner Trucks

STOP FUEL CAP LEAKS

The Leak Defender® is the only product out there that stops fuel cap leaks for good…Guaranteed!

Keep Your Fuel Tank Clean

KEEP YOUR TANK CLEAN

When you have pride in your ride, you want to keep it clean. No more fuel leaks, means it’s much easier to keep it that way!

Save on Fleet Repair Costs

SAVE ON REPAIR COSTS

Constantly replacing your fuel cap is not only ineffective, but a small cost that can add up to a big cost over time. And replacing your fuel tank not only cost a lot, but costs in downtime too!

Fast & Easy Install

FAST & EASY INSTALL

Installs in just minutes…Minimizing downtime! Just twist, tighten with a strap wrench & install set screws.

Stay DOT Compliant

STAY DOT COMPLIANT

The Department of Transportation (DOT) has mandated that the fuel systems on heavy trucks are properly sealed and free from leaks.

MINIMIZE DOWNTIME

Installation requires no downtime…It installs in just minutes. When your trucks are in the repair shop, you’re missing the income from being on the job. It’s estimated that downtime can can cost as high as $700 a day!

FEATURES

Made in the USA

MADE IN THE USA

We are an American company, proudly offering premium quality products that are manufactured and assembled right here in the USA. 

FITS NEARLY ALL MODELS

The Leak Defender® fits nearly all models of International, Kenworth, Mack, Peterbilt, Western Star, and Volvo Trucks over the OEM factory fuel neck. And it will work on all Freightliner models with 1/4 turn style caps.

MADE OF BILLET ALUMINUM

It’s machined from billet aluminum allowing it to be made with a high degree of precision & with the strength to withstand everyday wear & tear.

Fuel Cap Specifications

SPECIFICATIONS

Cap Diameter: 4.25″ (All Models)

Total Height w/ Cap:

Peterbilt = 1.75″

Kenworth & Western Star = 2″

Freightliner = 2.5″

International, Volvo & Mack = 2.75″