ARB | OME Rear Leaf Spring U-Bolt Kit 4WD (1986-95 4Runner/Pickup)

ARB | OME Rear Leaf Spring U-Bolt Kit

For 1979–1989 4WD Toyota 4Runner & 1979–1988 4WD Toyota Pickup

Overview

The ARB Old Man Emu Rear Leaf Spring U-Bolt Kit is a heavy-duty suspension hardware upgrade designed for 1979–1989 Toyota Pickup and Toyota 4Runner models equipped with leaf spring rear suspensions. Engineered to securely clamp the axle housing to the leaf spring pack, these premium U-bolts provide the strength and reliability required for stock restorations, suspension repairs, and complete Old Man Emu suspension upgrades.

Unlike reused factory U-bolts that may have been stretched and weakened through years of service, Old Man Emu U-bolts are manufactured from high-strength steel and designed to provide proper clamping force for safe and dependable suspension performance.

Available in both factory-length and lift-kit-length configurations, these U-bolts support a wide range of suspension setups from stock-height trucks to heavy-duty Old Man Emu Dakar leaf spring systems.

Why Replace Leaf Spring U-Bolts?

Leaf spring U-bolts are considered a one-time-use fastener. During installation they stretch slightly as they are torqued to specification, helping secure the axle assembly to the spring pack.

Reusing old U-bolts can lead to:

• Reduced clamping force

• Thread damage

• Premature hardware failure

• Axle movement under load

• Increased risk during towing and off-road use

Replacing U-bolts during suspension service helps maintain proper axle retention and long-term reliability.

Available U-Bolt Configurations

Factory OEM Style/ Stock Height Specification

Designed for factory-height rear leaf spring applications.

Specifications

• Narrow square-bend design

• 5.9-inch inside length

• 2.6-inch inside width

• Designed for factory spring pack thickness

• Fits standard Toyota 8-inch rear axle housings

Recommended Applications

• Stock-height suspension restorations

• Rear leaf spring replacement

• Factory rear suspension maintenance

OME Lift Kit Style/ Extended Lift Spring Specification

Designed specifically for thicker aftermarket and Old Man Emu leaf spring packs.

Specifications

• Extended square-bend design

• 7.9-inch inside length

• 2.95-inch inside width

• Additional thread engagement for heavy-duty spring packs

• Designed for lifted and overland suspension systems

Recommended Applications

• Old Man Emu Dakar rear leaf springs

• Heavy-duty multi-leaf spring packs

• Lifted suspension systems

• Overland and expedition builds

The additional thread length allows proper engagement through thicker spring packs where factory-length U-bolts may be too short.

Heavy-Duty Construction

Old Man Emu suspension hardware is engineered to meet the same durability standards as the rest of the ARB suspension system.

Construction Features

• High-strength steel construction

• Corrosion-resistant finish

• Precision-formed square-bend design

• Engineered for suspension applications

• Designed for secure axle retention

• Compatible with factory and Old Man Emu spring systems

Suspension System Integration

Old Man Emu suspension systems are designed as complete integrated packages.

These U-bolts work alongside:

• Old Man Emu Dakar leaf springs

• Old Man Emu spring bushings

• Center pins

• Spring liners

• Suspension fitting kits

Using the correct hardware helps ensure proper suspension geometry, safety, and long-term performance.

Important Ordering Information

⚠️ For a complete rear axle installation, most vehicles require four (4) rear U-bolts total.

If purchasing individual U-bolts, be sure to adjust your quantity before checkout.

Available purchase options:

• Single U-Bolt (1)

• Pair of U-Bolts (2)

• Complete Rear Axle Set (4)

Ideal Applications

• Suspension restoration projects

• Leaf spring replacement

• Old Man Emu suspension installations

• Overland builds

• Off-road vehicles

• Work trucks

• Towing applications

• Preventive maintenance

Vehicle Compatibility

Toyota Pickup

• 1979–1983 Toyota 1st Gen Pickup 4WD

• 1984–1988 Toyota 2nd Gen Pickup 4WD

Toyota 4Runner

• 1984–1989 Toyota 1st Gen 4Runner 4WD

Fitment Notes

Factory-Length U-Bolt

• Rear axle applications on stock-height vehicles

• Compatible with factory leaf spring packs

• Compatible with standard Toyota 8-inch rear axle housings

Extended-Length U-Bolt

• Rear axle applications using Old Man Emu or heavy-duty lift springs

• Designed for thicker aftermarket leaf spring packs

• Additional thread length for proper hardware engagement

Special Front Axle Application

• These may also be used on certain 1979–1985 solid axle Toyota Pickup front suspension applications utilizing ARB front leaf springs

• Narrow-profile design helps provide steering drag link clearance

Verify spring pack thickness and suspension configuration before ordering.

What Is Included

Choose from:

• (1) ARB Old Man Emu U-Bolt

• (2) ARB Old Man Emu U-Bolts

• (4) ARB Old Man Emu U-Bolts (Complete Rear Axle Set)

Available in:

• Factory-Length Specification

• Extended Lift-Spring Specification