GENERAC 6511 Spill Box Drain B...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$135.70
$118.09

GENERAC 6511 Spill Box Drain Back Kit

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Model: 6511
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$135.70
$118.09
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Spill Box Drain Back Kit
  • Features

    • Easy installation
    • This kit is only used in conjunction with the 5-gal spill box, it is not used independently
    • Spill Box Drain Kit
    • Includes all necessary hardware
    • Compatible with all Generac Protector series diesel generators
    • Instructions included
    • The spill box drain back kit allows fuel that was captured in the 5-gal spill box to be drained directly back into the fuel tank to avoid vapors

Manufacturer Resources

Product Specs

Country Of Origin:
United States
Restrictions:
No
Department:
Electrical
Product Group:
Accessories
Product Subgroup:
Drain Kit

Generac 6511 – Frequently Asked Questions

1) Can the Generac 6511 drain back kit be used on its own, or does it need the 5-gallon spill box?
The 6511 drain back kit only works in conjunction with the Generac 5-gallon spill box. It is not a standalone part. If you don't already have the 5-gallon spill box on the generator base, the kit has nothing to drain from and you'll need the spill box first.
2) What does a spill box drain back kit actually do on a diesel generator?
Fuel that collects in the 5-gallon spill box during fill-ups or minor overflow gets routed straight back into the generator's fuel tank instead of sitting in the box and off-gassing. That keeps diesel vapors down and means maintenance crews aren't hand-emptying the spill box.
3) Does the Generac 6511 kit come with the mounting hardware, or do I need to source fittings separately?
All necessary hardware ships with the 6511 kit, along with installation instructions. No separate fitting or fastener order is needed to complete the drain back connection to the fuel tank.
4) What is the Generac part number for the spill box drain back kit, and where is it made?
The part number is Generac 6511, sold as a single kit. Country of origin is the United States.
5) Are there shipping restrictions on the Generac 6511 drain kit?
No shipping restrictions apply to the 6511 spill box drain back kit. It ships as a standard electrical accessory kit, not as a regulated item.
How fast can I get the Generac 6511 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Generac 6511 come with a warranty?
Absolutely. The Generac 6511 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Generac 6511?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Generac 6511 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.