Product Description:
Safer, stronger, and cleaner — the right way to upgrade your squarebody fuel system.
The UMI Performance C10 Fuel Tank Relocation Kit moves the fuel tank out from under the cab and into the much safer location between the rear frame rails — reducing the risk of dangerous in-cab fuel exposure in the event of a collision, improving weight distribution, and freeing up under-cab space.
Designed specifically for 1973-1987 Chevy & GMC C10 trucks equipped with a UMI 4-Link Suspension, this relocation kit includes precision-cut steel tank straps, crossmembers, and all necessary hardware for a direct, secure fit. It works with the included 18 gallon Tanks Inc. fuel tank that supports any GM 6-bolt sending unit or aftermarket fuel pump — giving you flexibility for EFI or carbureted builds.
Whether you’re refreshing a classic cruiser, building a Pro-Touring squarebody, or upgrading for safety, this kit delivers factory-level fitment with race-proven UMI quality.
Tanks Inc fuel tank comes bare with only a filler neck designed for the C10 application. Pumps and sending units can be purchased directly from Tanks Inc for a wide range of applications.
https://www.tanksinc.com/ (877)-596-3842
PRODUCT FEATURES
- Improved Safety & Weight Balance
- Tanks Inc. Tank Compatibility
- Clean Filler Neck Integration
- Precision-Built Mounting Hardware
- CNC-bent steel straps with 3M isolator material
Key Features & Benefits
Improved Safety & Weight Balance
Relocates fuel tank from under cab to behind the rear axle, reducing occupant risk in a crash and shifting weight rearward for better balance and handling.
Tanks Inc. Tank Compatibility
Designed for the 18 gallon Tanks Inc. C10 tank (included), which accepts GM-standard 6-bolt sending units and fuel pumps — gasoline or EFI-ready. Multiple pump/sender options available from Tanks Inc.
Clean Filler Neck Integration
Includes a Tanks Inc. tank with a 90° filler neck for in-bed or behind-the-tail-light fill setups. Clears bed rails and frame without interference.
Precision-Built Mounting Hardware
- Laser-cut, CNC-bent tank straps with 3M isolator material for vibration dampening and tank protection.
- Bolt-on front crossmember with fuel tank flange, isolator sleeve for vibration reduction, and brake line relocation tabs for a clean install.
- Laser-cut, tab-and-slot rear crossmember with tank flange and isolator sleeve for added rigidity and perfect fit.
All-New Hardware Included
High-strength bolts, washers, and fasteners for a complete installation.
Why Relocate Your C10 Fuel Tank?
- Safety first – moves fuel storage away from the cab for reduced risk of fire in a side impact or rear-end accident.
- Better handling – rear-mounted tank improves weight distribution for more predictable cornering and traction.
- More fuel pump options – supports both carb and EFI systems with multiple aftermarket pump choices.
- Cleaner appearance – tidies up the underside of your truck and opens up under-cab space.
- Proven quality – laser-cut and CNC-formed parts deliver OEM-level fitment without compromise.
PRODUCT FAQ
Q: Why should I relocate the fuel tank on my C10?
A: Moving the tank from under the cab to between the frame rails greatly improves crash safety by distancing the fuel source from the passenger compartment, improves weight distribution for better handling, and makes room for exhaust or suspension upgrades.
Q: Will this kit work with any 1973-1987 C10?
A: This version (P/N 6428) is designed for trucks equipped with a UMI 4-Link Suspension due to its integrated crossmember design. If you have a leaf-spring truck, you must purchase PN 6429 add-on.
Q: Does it come with the fuel tank, pump, or sending unit?
A: No. The kit includes the tank, straps, crossmembers, isolators, and hardware. The fuel pump and sending unit are purchased separately, giving you the flexibility to choose components that match your build.
Q: Which tanks and fuel senders are compatible with 6428?
A: The kit is designed to work seamlessly with the Tanks Inc. rear-mount tank for C10s. This tank supports GM-standard 6-bolt fuel sending units and can accept the full range of fuel pump options (carbureted and EFI).
Q: How is the filler neck configured?
A: The Tanks Inc. tank includes a 90° filler neck that works for in-bed fill or behind-the-tail-light fill, and it’s designed to clear the bed rails and frame without interference.
Q: Will I have issues with vibration or noise?
A: No. The kit includes 3M isolator straps for the tank straps and isolation sleeves in the crossmembers to dampen vibration and reduce noise transfer to the cab.
Q: Are any modifications or trimming required during the install?
A: Some minor trimming of bed, frame flanges, or fuel tank side flanges may be needed depending on your truck’s frame condition. These modifications help achieve optimal fitment, especially with older trucks that may have frame variances.
Q: Does the kit require welding or advanced fabrication?
A: No welding is required. All crossmembers and tank straps bolt directly to the UMI 4-link suspension’s included mounts. Only basic hand tools and the ability to follow the provided instructions are needed.
Q: Do I need to remove the truck bed and rear bumper for installation?
A: Yes. Installation requires removing the bed and rear bumper to access the frame, crossmembers, and mounting points. This allows for proper fitment and ensures a secure installation as described in the instructions.
Fitment
1973-1987 GM C10/C15
Platform
1973-1987 GM C10/C15
Manufacturer
UMI Performance
Direct Bolt-On
No
Material
Mild Steel
Modifications
Cutting,Drilling
Finish
Powder Coat
UOM
Pair
Hardware
Included
Color
Red,Black
