6429 – 1973-1987 GM C10 Fuel Tank Relocation Brackets, Add-On
PRODUCT DESCRIPTION
Install your UMI 6428 Fuel Tank Relocation Kit with ease—even if you don’t have the UMI 4-link!
The UMI Performance 6429 Bracket Add-On makes our industry-leading rear fuel tank conversion accessible for all 1973-1987 C10 and GMC squarebody trucks, regardless of rear suspension setup. If your truck still runs factory leaf springs these precisely engineered brackets, templates, and hardware allow you to securely mount the 6428 kit using factory frame rails—no 4-link required.
PRODUCT FEATURES
- Laser-cut steel mounting brackets
- Includes frame templates for accurate install
- Includes all new HD installation hardware
PRODUCT FAQ
Q: What is PN 6429, and when do I need it?
A: The 6429 kit contains the custom frame brackets, templates, and hardware needed to mount UMI’s 6428 Fuel Tank Relocation Kit on any 1973-87 Chevy/GMC C10 truck without UMI’s 4-link suspension. If your truck runs leaf springs or another stock-style rear suspension, you’ll need the 6429 add-on to complete your tank relocation safely and securely.
Q: Can I use the 6429 brackets with my factory frame?
A: Yes. The kit is specifically designed to bolt UMI’s rear tank crossmembers and hardware directly to factory C10 frame rails, using templates for accurate drilling and alignment—no welding required.
Q: What suspension setups does 6429 work with?
A: 6429 is compatible with trucks running original leaf springs, aftermarket leaf spring setups, or most non-UMI rear suspensions. If your truck has a UMI 4-link, you do not need these brackets—the crossmembers bolt directly to the 4-link hardware.
Q: Is installation difficult for the average builder?
A: No. Installation is straightforward and mainly involves removing the bed and factory crossmembers, marking and drilling holes using provided templates, and bolting in the brackets and tank hardware with included fasteners. Only basic hand tools are required—no specialized skills.
Q: Can I still use a tail light or in-bed filler neck?
A: Yes. The mounting system and provided crossmembers maintain full compatibility with both tail light and in-bed filler solutions offered by various manufacturers.
Q: Will the tank install require frame trimming or modifications?
A: In most cases, only simple drilling and some light trimming of bed, frame flanges, or fuel tank flanges may be required for exact fitment—as explained in installation steps. No welding, torch cutting, or heavy fabrication is necessary.
THIS PRODUCT FEATURES
Designed & Manufactured in the USA
Durable Powder-Coat
North American Raw Materials
Precision Laser Cut Components
| 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 | Black |
UMI Performance
21 Years In The Industry
North American Raw Materials
Proudly partnering with leading USA steel suppliers, we source the finest North American mined and milled steel
Precision Bent DOM Tubing
Machine-guided DOM tubing bends maintain correct geometry while maintaining material strength.
Laser Cut Plating
We take North-American sourced plating and precision-cut each component with the latest laser-cutting technology.
Durable Powder Coating
Each finished part is properly prepped and coated with high quality Tiger Dry Lac powder coat, providing a tough long-lasting finish.
Consistent Welds
Our highly-skilled welders and robotic-welders provide consistent welds and ultimate part penetration.
100% USA Made
We take pride in providing 100% USA-Manufactured suspension components.
Shipping Guidelines
Flat Rate Shipping ($12.95) is only offered on Retail orders over $149 shipped via Ground in the Continental United States.
All International customers are responsible for any applicable duties and/or taxes incurred on your shipment upon delivery.
Return Information
All returns are subject to the authorization of UMI Performance, Inc. Please email [email protected] for a Returned Merchandise Authorization (RMA) number. Our Sales team will either authorize or deny the request for return at its discretion. Any product returned without an issued RMA number will not be credited. All returns must be made within 30 days of delivery, be in new condition, be in original sealed packaging and include the RMA number on the outside of the packaging. No exceptions. All products and their packaging must be in new and unopened condition. Products that have been altered, installed, or modified are not returnable. All shipping costs for returns are the responsibility of the customer. All returns are subject to a 20% restocking fee as well as the original shipping charges that UMI Performance may have incurred while shipping your order.
Due to the majority of Viking products being drop shipped, we can not offer returns on any Viking products. If you purchase a Viking product be sure it fits your application. If you need technical assistance prior to placing order please contact [email protected]
This '6429 - 1973-1987 GM C10 Fuel Tank Relocation Brackets, Add-On' fits the following platforms:
1973-1987 GM C10/C15
- 1973 1974 Chevrolet C10 Pickup
- 1975 1986 Chevrolet C10
- 1987 1987 Chevrolet R10
- 1973 1974 GMC C15/C1500 Pickup
- 1979 1986 GMC C1500
- 1975 1978 GMC C15
- 1987 GMC R1500
This 6429 - 1973-1987 GM C10 Fuel Tank Relocation Brackets, Add-On fits the following vehicles:
1974
Chevrolet C10 Pickup
- 1973 1974 Chevrolet C10 Pickup
GMC C15/C1500 Pickup
- 1973 1974 GMC C15/C1500 Pickup
1986
Chevrolet C10
- 1975 1986 Chevrolet C10
GMC C1500
- 1979 1986 GMC C1500
1987
Chevrolet R10
- 1987 1987 Chevrolet R10
1978
GMC C15
- 1975 1978 GMC C15
GMC
R1500
- 1987 GMC R1500
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