PureFlow AirDog Universal Fuel Sump Kit - AD09SMP

The PureFlow AirDog Universal Fuel Sump Kit (AD09SMP) is a purpose-built aftermarket fuel system accessory designed to solve one of the most common diesel truck fueling problems: the dreaded quarter-tank fuel starvation issue. Whether you're running an AirDog lift pump on a Duramax, Cummins, or Powerstroke-powered truck, this universal sump installs directly to the bottom of your existing fuel tank — no tank drop required — and uses gravity to ensure your aftermarket fuel system always has a reliable, low-restriction fuel supply. Made in the USA with corrosion-resistant components, the AD09SMP is a straightforward, high-impact upgrade for any diesel owner running an aftermarket fuel system.

Key Features & Benefits

• Eliminates the 1/4-Tank Fuel Starvation Problem: Traditional draw-straw-style fuel pickups can struggle to pull fuel once the tank drops below roughly a quarter full. The sump sits at the very lowest point of the tank, giving your lift pump consistent access to fuel even at low tank levels — critical for performance driving, towing, and hard acceleration.
• No Tank Drop Required: One of the most DIY-friendly features of the AD09SMP is that it can be installed without removing or dropping the fuel tank. This significantly reduces labor time and complexity, making it an approachable weekend install.
• Integrated Feed and Return Port: The redesigned sump includes both a suction port and a return port, allowing your fuel system to properly circulate and return excess fuel — a feature not found on older or simpler sump designs.
• Dual O-Ring Seal: PureFlow AirDog engineered a dual o-ring seal into the sump to prevent fuel leaks at the tank interface, giving you confidence that your installation is both secure and safe.
• Corrosion-Resistant Construction: The sump is manufactured using corrosion-resistant components, helping it stand up to the harsh environment inside a diesel fuel tank over the long term.
• Quick Installation — Under an Hour: According to PureFlow AirDog, installation is designed to take less than an hour, making this one of the most time-efficient upgrades you can add to your diesel fuel system.
• Universal Fitment: The AD09SMP is a universal kit, making it compatible with a wide range of diesel trucks running aftermarket fuel systems — not limited to a single platform or model year.
• Made in the USA: Manufactured domestically by PureFlow AirDog, a brand known for its diesel fuel air separation systems and lift pumps.

Specifications

• Part Number: AD09SMP
• Brand: PureFlow AirDog
• Weight: 2.6 lbs.
• Ports: Suction (feed) port and return port
• Seal Type: Dual O-Ring
• Material: Corrosion-resistant components
• Country of Manufacture: USA
• CARB Compliance: Not CARB legal; not for sale in California
• UPC: 813094013401

Fitment

The AirDog AD09SMP is a universal fuel sump kit, meaning it is not application-specific to a single vehicle make, model, or year. It is designed to work with aftermarket fuel systems — particularly AirDog and Diesel Rx lift pump setups — across a broad range of diesel trucks including those powered by GM Duramax, Dodge/RAM Cummins, and Ford Powerstroke engines. Because fitment depends on your specific tank configuration and existing fuel system, we recommend confirming compatibility with your setup before ordering. Use the fitment help feature on this page or contact our team directly — we're happy to verify the right fit for your truck.

Important: This product is not legal for sale or use in California due to CARB regulations.

Why Buy from ThreePiece.us

• Free Shipping: The AirDog AD09SMP ships free on every order to the continental US — no minimum required.
• Affirm Financing: Break up your purchase into manageable payments with Affirm financing, available at checkout. Pay over time on your terms.
• Expert Fitment Support: Not sure if this sump works with your existing fuel system or tank setup? Our team has served 10,000+ customers and is ready to help. Reach out via the fitment help button on this page or call us directly.
• Genuine Products: Every product we carry is 100% authentic — we never sell replicas or gray-market parts.
• Experienced Team: ThreePiece.us has been serving performance and diesel enthusiasts since 2014, with deep expertise across aftermarket fuel system components, wheels, and truck accessories.

Frequently Asked Questions

Q: Do I have to drop my fuel tank to install the AD09SMP?
A: No. One of the primary design advantages of the PureFlow AirDog AD09SMP is that it can be installed without dropping the fuel tank. PureFlow AirDog states installation is designed to take less than an hour.

Q: What problem does the fuel sump actually solve?
A: The AD09SMP addresses the common "1/4 tank problem" — a situation where draw-straw-style fuel pickups in diesel trucks can lose suction and struggle to deliver adequate fuel to an aftermarket lift pump once the tank level drops toward a quarter full. By installing a sump at the lowest point of the tank, the pump always has access to the fuel that remains.

Q: Does this sump have both a feed and a return port?
A: Yes. PureFlow AirDog redesigned the AD09SMP to include both a suction (feed) port and a return port, making it compatible with full-circulation aftermarket fuel systems.

Q: Is the AD09SMP legal to use in California?
A: No. This product is not CARB legal and is not available for sale in California.