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Correct-Length U-Bolts for Blocked 69-72 Chevy/GMC Trucks
Adding lift blocks to a 1969-1972 1/2 or 3/4 ton 4WD truck's rear axle requires longer u-bolts to clamp through the taller block. Tuff Country's 17652 kit supplies zinc plated, extended-length u-bolts sized for 3 in. to 4 in. lift blocks on this platform.
Key Features
- Extended length for use with 3 in. to 4 in. rear lift blocks
- Zinc plated for corrosion resistance
- Includes nuts and washers for a complete install
- Designed specifically for the 1969-1972 1/2 and 3/4 ton 4WD platform
Fitment
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1969-1972 | Chevrolet | C/K10 | |
| 1969-1972 | Chevrolet | C/K20 | |
| 1969-1972 | GMC | C/K10 | |
| 1969-1972 | GMC | C/K20 | |
| 1969-1973 | Chevrolet | K10 Pickup | Base |
| 1969-1972 | Chevrolet | K20 Pickup | Base |
| 2001-2005 | Chevrolet | Silverado 2500 HD | Base |
| 2001-2006 | Chevrolet | Silverado 2500 HD | LS |
| 2001-2010 | Chevrolet | Silverado 2500 HD | LT |
| 2007-2010 | Chevrolet | Silverado 2500 HD | LTZ |
| 2002-2005 | GMC | Sierra 2500 HD | Base |
| 2001-2002 | GMC | Sierra 2500 HD | SL |
| 2006 | GMC | Sierra 2500 HD | SL |
| 2001-2010 | GMC | Sierra 2500 HD | SLE |
| 2001-2010 | GMC | Sierra 2500 HD | SLT |
| 2003-2010 | GMC | Sierra 2500 HD | WT |
| 2007 | GMC | Sierra 2500 HD Classic | SL |
| 2003-2010 | Chevrolet | Silverado 2500 HD | WT |
| 2007 | Chevrolet | Silverado 2500 HD Classic | LS |
| 2007 | Chevrolet | Silverado 2500 HD Classic | LT |
| 2007 | Chevrolet | Silverado 2500 HD Classic | WT |
| 1969-1972 | GMC | K15/K1500 Pickup | Base |
| 1969-1972 | GMC | K25/K2500 Pickup | Base |
| 2007 | GMC | Sierra 2500 HD Classic | SLE |
| 2007 | GMC | Sierra 2500 HD Classic | SLT |
| 2007 | GMC | Sierra 2500 HD Classic | WT |
Specifications
| Detail | Value |
|---|---|
| Manufacturer part number | 17652 |
| Use case | 3 in. to 4 in. rear lift blocks |
| Finish | Zinc plated |
| Includes | U-bolts, nuts, and washers |
What's Included
- 4 u-bolts
- Nuts and washers
About Tuff Country
Tuff Country EZ-Ride Suspension has manufactured American-made lift kits, leveling kits, traction bars, and suspension hardware for trucks and SUVs since the 1970s. Tuff Country components are engineered as bolt-on or direct-fit upgrades that work with the factory suspension geometry, and most kits carry a limited lifetime warranty on original components.
FAQ
Do I need these u-bolts if I install lift blocks?Yes, factory u-bolts are too short to clamp through an added lift block, this kit supplies the correct extended length.
What lift block height is this kit designed for?3 in. to 4 in. rear lift blocks on this platform.
Are these u-bolts sold with the lift blocks?No, this is the u-bolt kit only, blocks are sold separately or included in a complete block and u-bolt kit.
What finish do these u-bolts have?Zinc plating for corrosion resistance.
How many u-bolts are included?4, enough for both sides of the rear axle.
Are nuts and washers included?Yes, the kit includes matching nuts and washers.
Will these fit a 1 ton truck?This part number is designated for 1/2 and 3/4 ton applications, 1 ton trucks typically use a different u-bolt size.
Do these u-bolts fit the front axle?No, this kit is designed for the rear axle only.
Installation Instructions
- Support the vehicle and remove the rear wheels.
- Remove the factory u-bolts from the axle and spring perch.
- Install the lift block between the axle and leaf spring if not already in place.
- Install the new extended u-bolts over the block and through the spring perch.
- Thread on the new nuts and torque to the vehicle manufacturer specification.
Prop 65 Warning
WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov
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