Our Beloved Pat Hagenbuch 1942 - 2021

Tailgate Options

PHIL's Autogate® Tailgates are enhanced with a variety of accessories that assist in additional load containment, increased payload, or the reduction of sticky material carryback.

Add capacity

Reduce wet material spillage

Minimize tailgate bouncing for long life

Customize tailgate for unique job requirements


Recommended to increase volumetric capacity when hauling lightweight material. (Does increase loading height.) Special prices are available for Autogate® Tailgate / Sideboard packages. Available in 1" increments from 6" to 40" in size for almost every make and model of off-highway hault ruck.

Body Seal

Installed on sides of body to help seal space between the gate, sidearms and body sides. Reduces most fine or fluidic material leakage, +/- ¾".

Fluidic Seal

Provides a nearly complete seal (PHIL cannot guarantee a 100% seal; there will be occassional leaks) between the Autogate Tailgate and truck body to haul extremely soupy materials. Our Fluidic Seal uses the body seal components plus additional rubber seal pieces across the bottom and up the sides of the tailgate rear. Recommended when you need more than a body seal to keep liquid material "in-the-box". Please note - Fluidic Seals are wear parts are will require replacement and additional maintenace to keep working optimally over time. For more information, click here.

Rubber Cushion Pad Assembly

Recommended for underground operations and operations with high road speeds and uneven haul roads. Our Cushion Pad Assembly reduces tailgate wear, bouncing and noise, prolonging the life of tailgates operating in adverse conditions. May be installed on an existing gate or purchased with an Autogate Tailgate.

Mud Flap Outrigger Mount

Mount to attach OEM Mud Flaps to tailgate outrigger arrangement. This option provides a stable, set location for the mudflap to be mounted when a tailgate installation or its components would otherwise impact a mud flaps original location.


PHIL set the industry standard in tailgate design since we introduced the first off-highway Autogate Tailgate to the industry in 1969. Today, we’ve produced more than 10,000 tailgates for both articulated and rigid frame off-highway trucks - from 20 ton to 340 ton in size.

Each fast-opening, fast-acting Autogate Tailgate provides increased payloads, decreased material spillage, improved loading and a balanced load distribution. And, we use a unique, high-strength chain that’s stronger than any commercially available standard chain and oversized gate pivot pins to provide maximum durability.

Whether you’re hauling dirt, sand, gravel, shot rock, coal, oil sands or soupy material, the PHIL Autogate Tailgate keeps material in your truck bed no matter what the condition.

How Does An Autogate Tailgate Increase Your Truck Payload and Productivity?

Without a tailgate, isolated components such as the front suspension, front axle, hoist mechanism, and steering equipment may be overburdened. While attempting to prevent spillage, operators may pile the load forward in the truck bed causing damage to the canopies, overload to the front tires, and side spillage. By closing the rear of the truck, tailgates provide a bigger loading target helping the loader operator distribute the load evenly from the front to the rear of the truck so weight distribution improves.

With the truck bed closed, you’ll also realize a volumetric capacity increase of up to 20%, depending on the material hauled.

A direct benefit of tailgates is the elimination of rear-end spillage. When a non-tailgated truck shifts gears on an incline or turns a corner, materials can be lost over the sides or out the rear leading to tire damage. Our Autogate Tailgate reduces side and rear-end spillage by keeping the “rocks-in-the-box”. Drivers steer with ease through clutter-free loading and haulage areas.

Operation of our Autogate Tailgate is simple and trouble-free. No lock, cylinders or controls to malfunction. The body dumps, the Autogate Tailgate opens.

Tailgate Capacity Chart


April 18-20, 1977

Learn about the operational benefits of tailgates and how they can help improve your haul truck efficiency.



Aggregates Manager Magazine
February 2015

Learn how adding a tailgate to your haul truck can boost



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