ICON Vehicle Dynamics 15" Grade 8 Rear U-Bolt Kit for F-350 DRW, Ram 2500, Ram 3500

The ICON Vehicle Dynamics 15" Rear U-Bolt Kit is a grade 8 steel hardware set designed to secure leaf springs to the rear axle on the 1999–2010 Ford F-350 Super Duty (dual rear wheel only), 2003–2013 Dodge Ram 2500, and 2003–2012 Dodge Ram 3500. The kit includes U-bolts, nuts, and washers.

Shipping: ICON parts ship direct from ICON Vehicle Dynamics, mostly by UPS Ground. Lead times vary by part and some items are built to order, so please allow extra time. We email tracking as soon as your order ships.

Built to Hold Under Load

Grade 8 steel is the highest common classification for inch-series fasteners, meaning these U-bolts resist stretching and shear forces that standard hardware cannot. For a leaf-spring rear suspension carrying heavy payloads or add-a-leaf packs, that strength rating is the difference between hardware that stays torqued and hardware that works loose over time.

Corrosion Resistance for Long-Term Use

The black E-coat finish seals the steel against moisture and road salt, which is especially relevant on a rear axle exposed to spray and debris. E-coat is applied by electrodeposition, giving even coverage in recessed areas that spray finishes miss.

Complete Hardware Included

The kit ships with U-bolts, mounting nuts, and washers, so no separate hardware order is needed to complete the installation.

Features

• Grade 8 steel construction: high-strength fasteners rated for demanding leaf-spring applications
• 15" U-bolt length: compatible with a variety of leaf spring and rear block combinations
• Black E-coat finish: electrodeposition coating for corrosion resistance
• Complete kit: U-bolts, nuts, and washers included

Specifications

Who This Is For and Isn't

This kit suits owners of a 1999–2010 Ford F-350 Super Duty with dual rear wheels, a 2003–2013 Dodge Ram 2500, or a 2003–2012 Dodge Ram 3500 who are replacing worn U-bolts or installing a new leaf spring or block lift setup at the rear axle.

This kit does not fit single rear wheel (SRW) F-350 Super Duty trucks. Application Note #702 restricts fitment to dual rear wheel (DRW/Dually) configurations only. It is not intended for front axle use, and it does not include leaf springs or lift blocks.

Common Questions

Does this kit fit a single rear wheel F-350?

No. The ICON 15" Rear U-Bolt Kit is compatible only with the 1999–2010 Ford F-350 Super Duty in dual rear wheel (DRW/Dually) configuration. Single rear wheel F-350 trucks are explicitly excluded by ICON's Application Note #702.

What is included in the kit?

The ICON 15" Rear U-Bolt Kit includes the U-bolts, mounting nuts, and washers needed for installation. Leaf springs, lift blocks, and any other suspension components are not included and must be sourced separately.

Will these U-bolts work with an add-a-leaf or block lift?

The 15" length is designed to work with a variety of leaf spring and rear block combinations on the supported vehicles. Confirm the required U-bolt length for your specific spring pack and block height before ordering.

How does the E-coat finish hold up to road exposure?

The black E-coat finish on this U-bolt kit is applied by electrodeposition, which provides corrosion resistance on a rear axle exposed to road spray, moisture, and salt. It covers recessed and curved surfaces more evenly than spray-applied coatings.

WARNING: This product contains chemicals known to the State of California to cause cancer, birth anomalies, or other reproductive harm (California Proposition 65).