Replace stretched or corroded axle hardware before it compromises spring clamping
Tuff Country 37703 is a front-axle fastening kit for the listed leaf-sprung Dodge four-wheel-drive applications. The round steel U-bolts replace worn hardware and provide the correct set of clamps, nuts, and washers for compatible stock or lifted leaf-spring assemblies.
Key Features
- Tuff Country 37703: Application-specific front axle U-bolt set
- Round steel construction
- Corrosion-resistant plated finish
- Compatible with stock or suitable aftermarket leaf springs
- Includes matched nuts and washers
- Five-piece U-bolt set identified by Summit Racing
- Direct replacement for the listed Dodge applications
Fitment
Use Tuff Country 37703 only for the applications below. Confirm every listed qualifier and exclusion.
| Years | Make | Model | Details |
|---|---|---|---|
| 1978-1993 | Dodge | Ramcharger | front axle; four-wheel drive; stock or compatible aftermarket leaf springs |
| 1986-1989 | Dodge | W100 | front axle; four-wheel drive |
| 1978-1993 | Dodge | W150 | front axle; four-wheel drive |
| 1978-1980 | Dodge | W200 | front axle; four-wheel drive |
| 1981-1993 | Dodge | W250 | front axle; four-wheel drive |
Specifications
| Detail | Value |
|---|---|
| Brand | Tuff Country |
| Manufacturer Part Number | 37703 |
| Product Type | Differential Mounts |
| Position | Front axle |
| U-Bolt Style | Round |
| Thread Diameter | 9/16 inch |
| Material | Steel |
| Finish | Plated for corrosion resistance |
| Quantity | Set of five U-bolts |
| UPC | 698815377037 |
What's Included
- Five front axle U-bolts for Tuff Country 37703
- Matching nuts and washers
- Not included: Leaf springs, spring plates, shackles, and axle components
About Tuff Country
Tuff Country produces application-specific suspension lift and replacement hardware for trucks and utility vehicles, including leaf-spring fastening and driveline-correction components.
Related Parts
- Confirm spring plates, leaf springs, bushings, and shackles independently for the exact axle and suspension configuration.
FAQ
What is the 37703?It is a front axle U-bolt hardware kit for securely clamping compatible front leaf springs to the axle.
What vehicles does this part fit?It fits the listed 1978-1993 Dodge Ramcharger and W-series four-wheel-drive applications by exact year and model.
What is included in the package?The package contains the specified U-bolts with matching nuts and washers.
What materials and finish are used?The U-bolts are steel with a corrosion-resistant plated finish.
Is an alignment required after installation?An alignment is required when the component changes front suspension geometry. For other applications, verify driveline or axle geometry and follow the vehicle service procedure.
Is professional installation recommended?Installation should be performed with correctly rated lifting equipment and the exact torque procedure for the axle and spring assembly.
What warranty applies?Confirm current Tuff Country warranty terms through the manufacturer or authorized seller.
What should be checked after installation?Recheck fastener torque, component clearance, lubrication where applicable, and safe suspension or driveline operation after the initial road test.
Installation Instructions
- Confirm the exact Dodge application, axle, spring width, and required U-bolt dimensions before removing the original hardware.
- Support the chassis and axle safely, then replace U-bolts one side at a time without allowing the axle or spring pack to shift.
- Seat the spring pack and spring plate squarely, install the new U-bolts, washers, and nuts, and tighten them evenly in a cross pattern.
- Torque the hardware to the vehicle or suspension manufacturer's specification and confirm brake-line, steering, and tire clearance.
- Re-torque the U-bolts after the initial settling period specified by the suspension manufacturer.
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