--- product_id: 123627535 title: "RDP Fuel Tank Sump w/ Integrated Return For Diesel Truck AirDog FASS For Dodge Cummins GM Duramax Ford Powerstroke" brand: "rdp" price: "540.10 DT" currency: TND in_stock: true reviews_count: 8 category: "Rdp" url: https://www.desertcart.tn/products/123627535-rdp-fuel-tank-sump-w-integrated-return-for-diesel-truck store_origin: TN region: Tunisia --- # Dual O-ring leak-proof seal 3" hole saw included for easy install Aircraft-grade T6 billet aluminum RDP Fuel Tank Sump w/ Integrated Return For Diesel Truck AirDog FASS For Dodge Cummins GM Duramax Ford Powerstroke **Brand:** rdp **Price:** 540.10 DT **Availability:** ✅ In Stock ## Summary > ⛽ Upgrade your diesel game with precision and ease — fuel smarter, drive stronger! ## Quick Answers - **What is this?** RDP Fuel Tank Sump w/ Integrated Return For Diesel Truck AirDog FASS For Dodge Cummins GM Duramax Ford Powerstroke by rdp - **How much does it cost?** 540.10 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/123627535-rdp-fuel-tank-sump-w-integrated-return-for-diesel-truck) ## Best For - rdp enthusiasts ## Why This Product - Trusted rdp brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Optimized Fuel Flow Design:** Stand pipe separates return fuel from feed, ensuring your engine gets pure, aeration-free diesel. - • **Seamless Leak-Free Integration:** Dual O-ring seal and machined groove ensure a perfect, drip-free fit every time. - • **Built-In Fuel Return Innovation:** Eliminates filler neck modifications, preventing leaks and pump cut-offs during refueling. - • **Precision Engineered Durability:** Crafted from aircraft-grade T6 billet aluminum for unmatched strength and corrosion resistance. - • **One-Hole Installation Simplicity:** Includes a 3" hole saw for quick, clean tank access—no tank drop needed. ## Overview The RDP Fuel Tank Sump with Integrated Return is a universal-fit, aircraft-grade aluminum upgrade designed for diesel trucks (Dodge Cummins, GM Duramax, Ford Powerstroke). It simplifies aftermarket fuel system installation by requiring only a single 3" hole cut, includes a built-in fuel return to avoid filler neck modifications, and features a dual O-ring seal for leak-free performance. Its stand pipe design ensures clean fuel delivery by separating return fuel from feed, making it ideal for both stock and aftermarket tanks. ## Description The RDP Fuel Tank Sump with Built-In Fuel Return provides you with a perfect option to maximize fuel delivery, and customization when installing your aftermarket fuel system. Avoid the common 1/4 tank issues associated with in-tank draw straws used with fuel systems such as AirDog, FASS and many others. The RDP sump features a one-hole design that only requires drilling a single hole for installation. A machined groove for the o-ring gasket ensures a leak-free seal, and the inner-ring is designed to fit into the bottom of the tank without requiring you to remove it from the truck. We even include a 3" hole saw for drilling your tank! What sets this sump apart from the other sumps in the RDP lineup is the built-in return. Installation of most aftermarket fuel systems require you to cut and "tee" into your factory fuel filler neck. In some cases, modifications to the filler neck can cause leaks, and also cause fuel pumps to "click off" when refueling. Using the built-in return port, you can easily route return fuel back to the tank without having to modify any other components for a clean and easy installation. For optimal fuel quality, the RDP Sump features a stand pipe that places the returned fuel above the fuel feed. This design eliminates the possibility of feeding your engine the aerated return fuel coming back to your fuel tank. Includes barbed fittings for 1/2" hose. Review: Good Value and Works as Advertised - This wasn't an easy installation, but it wasn't difficult. I installed the sump in a 2013 Chevrolet 3500 long bed. I didn't cut completely through the tank with the hole saw. Left maybe 1/32nd or less and then just with a knife. I had very little pieces in the tank to clean up. The hole I cut was in front of the stock unit and about 1 1/2 inches towards the outside of the tank. The arm for the stock fuel sending unit come forward and by cutting the hole off of the center of the tank I hand no interference with the arm. I did do some deburring inside the sump to clean up the threaded areas. There were a few fragments that could have come loose. Other than that the machining and fit was perfect. Review: Love it - Great product but hole saw is for plastic tanks only, had to buy a metal cutting saw for my application. But works perfectly ## Features - Built-In Fuel Return / No Tank Drop Installation / Stand Pipe Separates Return Fuel & Feed - 3" Hole Saw Included For Easy Installation / Made From Aircraft Grade T6 Billet Aluminum / Works Great With Stock & Aftermarket Fuel Tanks - Note: Not recommended for off-road use or for vehicles with potential ground clearance issues. Extra care must be taken to ensure that fuel tank is free of debris after drilling. - Universal - Cutting Required - Dual Oring Seal ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B078B18PD1 | | Best Sellers Rank | #1,587,227 in Automotive ( See Top 100 in Automotive ) #1,336 in Automotive Replacement Fuel Tanks | | Brand | RDP | | Brand Name | RDP | | Compatible with Vehicle Type | Truck | | Customer Reviews | 4.3 out of 5 stars 201 Reviews | | Exterior Finish | Aluminum | | Fit Type | Universal | | Fuel Type | Diesel | | Item Weight | 1.31 kg | | Manufacturer Part Number | DP0267 | | Material | Aluminum | | Material Type | Aluminum | | Model Number | DP0267 | | Number of Items | 1 | | Product Grade | high | | UPC | 797132130261 | | Unit Count | 1 Count | | Vehicle Service Type | Truck | ## Images ![RDP Fuel Tank Sump w/ Integrated Return For Diesel Truck AirDog FASS For Dodge Cummins GM Duramax Ford Powerstroke - Image 1](https://m.media-amazon.com/images/I/61J9w0ULmwL.jpg) ![RDP Fuel Tank Sump w/ Integrated Return For Diesel Truck AirDog FASS For Dodge Cummins GM Duramax Ford Powerstroke - Image 2](https://m.media-amazon.com/images/I/61EieYCT29L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good Value and Works as Advertised *by R***S on October 12, 2019* This wasn't an easy installation, but it wasn't difficult. I installed the sump in a 2013 Chevrolet 3500 long bed. I didn't cut completely through the tank with the hole saw. Left maybe 1/32nd or less and then just with a knife. I had very little pieces in the tank to clean up. The hole I cut was in front of the stock unit and about 1 1/2 inches towards the outside of the tank. The arm for the stock fuel sending unit come forward and by cutting the hole off of the center of the tank I hand no interference with the arm. I did do some deburring inside the sump to clean up the threaded areas. There were a few fragments that could have come loose. Other than that the machining and fit was perfect. ### ⭐⭐⭐⭐⭐ Love it *by J***N on May 26, 2025* Great product but hole saw is for plastic tanks only, had to buy a metal cutting saw for my application. But works perfectly ### ⭐⭐⭐⭐ Works great if you seal the fittings properly (advise a flat rubber or teflon washer) *by T***Y on October 8, 2020* The sump pickup was easy to install and price was really good compared to name brand ones. It it a bit bulky and obviously hangs lower than the fuel tank about 1”. The design is good but you may want to mark which side is feed and return. I installed it on a 2004 Ford F-250 and decided to modify my fuel tank skid plate to keep the protection (see pics). Take your time cutting the hole with the supplied hole saw. The more precise your cut, the better the fit. Be sure to clean the surface of the tank, the sump o-ring slots, and mounting face (I used a wire brush on the inside of the sump). For extra leak protection, I used teflon tape on the two bolts that hold the upper and lower parts together. Leaking from the supplied brass fittings was inevitable since there is no flange or flare. The first time I put it all together, I only put a few gallons of fuel in the tank to check for leaks. Yes, it leaked about a drop every minute or so from the fittings with just teflon on the brass threads. So, I drained the fuel out and and removed them. The second time was successful, I wrapped the threads in teflon, put a thin o-ring on the fittings then cleaned the sump threads well and applied Permatex (gasket maker) BLACK OIL RESISTANT RTV lightly inside and on the brass threads. Once the fittings were tight, I packed RTV over all of the fittings and let it sit for several hours to cure before putting fuel back in. No more leaks! I believe cutting a chamfer to allow an o-ring to seat would solve the issue but, a flat rubber or teflon washer would probably do well too. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/123627535-rdp-fuel-tank-sump-w-integrated-return-for-diesel-truck](https://www.desertcart.tn/products/123627535-rdp-fuel-tank-sump-w-integrated-return-for-diesel-truck) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-13*