Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Suspension and Components› Springs and Components
FOX
1/2 x 2-3/4 x 6-1/2 Round U-bolt
SKU: F00A UBT4005
Easy — 1–2 hours
Overview
This U-bolt is sold individually and includes the necessary washers and nuts for installation. It is suitable for swapping out old, worn-out U-bolts or for use with lift kits.
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Part #: UBT4005
Whether you are swapping out old, worn out U-bolts or need a longer set to use with lift, Zone Offroad offers high strength, black e-coated U-bolts in a variety of popular shapes and sizes to fit your vehicle. All U-bolts include washers and nuts for quick and easy installation under your vehicle.
Features:
- E-Coated black for a durable finish
- Nuts and washers included
- Sold Individually
Vehicle Symptoms
- Squeaking or clunking noise from rear suspension
- Vehicle sags or leans to one side when loaded
- Gap between leaf spring and axle pad visible
- Rear axle shifts under hard acceleration or braking
- U-bolts appear rusted, cracked, or stripped
Relevant Conversations
- 1/2 x 2-3/4 x 6-1/2 u-bolt measurements explained
- Fox UBT4005 u-bolt vs Dorman for leaf spring
- U-bolt replacement after lift kit installation
- Clunk noise leaf spring u-bolt loose symptoms
- How to torque leaf spring u-bolts on truck
- BDS UBT4005 round u-bolt for Jeep Wrangler
- U-bolt size for 4-inch lift F-150
- Shackle and u-bolt combo for rear suspension upgrade
- Broken u-bolt causing axle shift under load
- Fox UBT4005 vs Zone Offroad u-bolt fitment
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
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Specifications
| Brand | FOX |
| Part Number | F00A UBT4005 |
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Returns & Fitment
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
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