Tuff Country 17853 Rear Ubolt Kit for Use with Blocks - 4" & Add-A-Leafs
Tuff Country
17853
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Tuff Country 17853 Rear Ubolt Kit for Use with Blocks - 4" & Add-A-Leafs
Product Details
Description
The Tuff Country 17853 Rear U-Bolt Kit is a corrosion-resistant solution designed for lifted Chevy/GMC trucks using blocks or Add-A-Leafs. Built to replace worn factory u-bolts on 1988–2008 4WD K2500 and K3500 models, it provides a secure, long-lasting rear suspension mount for heavy-duty applications.
- Includes: (4) u-bolts with nuts and washers for a complete replacement
- Finish: Zinc-plated steel for superior corrosion resistance in harsh conditions
- Bolt Diameter: 5/8" for robust, reliable clamping force
- Inside Diameter: 2 3/4" to fit standard axle housings
- Length: 15 1/2" to match common lifted configurations
- Bend Type: Square bend designed for secure seating in the axle housing
- Vehicle Fitment: Specifically engineered for 1988–2008 Chevy Truck K2500 4WD (3/4-ton) and K3500 4WD (1-ton) models
- Compatibility: Optimized for use with lift blocks (4-inch blocks) and Add-A-Leafs to maintain proper axle positioning
Replacing worn or mismatched rear u-bolts with this kit helps ensure axle retention and alignment on lifted trucks, reduces chassis movement, and supports reliable towing and off-road performance. The included nuts and washers simplify installation, while the zinc finish protects against rust in winter driving, mud, and outdoor use—giving you a durable, maintenance-friendly solution that keeps your rear axle securely in place.
| Year Range | Make | Model | Drivetrain | Fitment Note |
|---|---|---|---|---|
| 1988–2008 | Chevy | Truck K2500 | 4WD | Fits 3/4 Ton Models. |
| 1988–2008 | Chevy | Truck K3500 | 4WD | Fits 1 Ton Models. |
Specifications:
FAQs
Please read our FAQs page to find out more.
Will this part fit my vehicle?
Fitment varies by year, make, model, drivetrain, and lift height. Always use the vehicle fitment selector or refer to the fitment notes on the product page before purchasing. If you’re unsure, our team can help confirm compatibility.
Are Tuff Country products street legal?
Most Tuff Country products are designed for on-road and off-road use, but local laws and regulations vary by state and country. It is the customer’s responsibility to ensure compliance with local vehicle regulations after installation.
Is professional installation required?
Professional installation is recommended but not required. Many products can be installed by experienced DIYers with proper tools. However, improper installation can affect ride quality, safety, and warranty coverage.
Will this affect my ride quality?
Tuff Country products are engineered to balance ride comfort, performance, and durability. Ride quality can change depending on lift height, vehicle setup, tire size, and other suspension components.
Are Tuff Country products covered by a warranty?
Yes. Tuff Country products are backed by a manufacturer warranty that covers defects in materials and workmanship. Warranty terms vary by product type and do not cover damage caused by misuse, improper installation, or normal wear.
Can I run larger tires with this product?
Many Tuff Country lift kits and suspension components allow for larger tire sizes, but maximum tire clearance depends on wheel offset, tire width, and vehicle configuration. Refer to the product details or contact support for guidance.
What is the return policy?
Unused, uninstalled products may be eligible for return within the stated return window. Items must be in new condition and returned in original packaging. Shipping costs and restocking fees may apply.
Who can I contact if I have questions?
Our customer support team is available to help with fitment questions, installation guidance, and order support. Reach out before purchasing if you want to ensure you’re selecting the right part for your build.
Free shipping on Orders Over $75
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Selling Suspension Systems for 35+ Years
Tuff Country EZ-Ride Suspension was incorporated over 35 years ago, realizing the desperate need for quality suspension products in the after market world.