High Quality Aluminum Diesel Fuel, Hydraulic, Multi-Use Tanks & Repair Services

Specializing in OEM grade aftermarket custom diesel fuel tanks

The ONLY West Coast, American made aluminum aftermarket diesel fuel tank and repair services for over 45 years. We are the only manufacturer and aluminum tank repair service shop in the western United States!  Each tank is fully FMCSA 393.67: compliant and DOTcertified. We sell a variety of tanks, components and accessories (Locking fuel caps and anti-syphon caps).


/ what we specialize in

We can even provide large orders for fleets of trucks, or on­going fuel­tank service for fleet operators. Whether you maintain 3 trucks or a 3 dozen, our expert welders and builders at Allen­Jac can easily provide any combination of fuel tanks you need for your trucks.

We also offer volume discounts,contract pricing and bid work on both tank fabrication and shipping for quantity buyers. Please give us a call directly for more information on our fleet offers. Joe Moulton VP Sales 707-­473-­0806


We know how important your truck is to you, and we know you have to keep it moving. That's why
we specialize in fast, high­quality fuel tank replacement, and offer fuel tanks ready­to­go for most of the major makes and models of commercial trucks (ask about free local delivery).

We help take the mystery out of replacing your fuel tank. All we usually need is the diameter of the
tank, length and make and model of the truck it's that easy! Custom work is well… custom.


/ take a look


/ hear from our customers
  • My husband owns a truck repair company in Richmond, CA... October 22, 2015 we drove up to Windsor, C...
    My husband owns a truck repair company in Richmond, CA... October 22, 2015 we drove up to Windsor, CA to drop off a fuel tank to be modified for hydraulics... We returned today after a curtesy call... Not only was the tank done earlier than promised, it's perfect... Thank you Joe for your great service.
    ★ ★ ★ ★ ★

    Sharon H.

  • Great people. Wonderful shop!
    Great people. Wonderful shop!
    ★ ★ ★ ★ ★

    Marci Marz

  • Local small family business
    Local small family business
    ★ ★ ★ ★ ★

    Tiffany Collver


/ stay connected


Monday8:00AM - 5:00PM
Tuesday8:00AM - 5:00PM
Wednesday8:00AM - 5:00PM
Thursday8:00AM - 5:00PM
Friday8:00AM - 5:00PM


/ keep in touch

Allen-Jac Fuel Tanks

10611 Old Redwood Hwy,

Windsor, CA 95492

Phone. 707-975-2503