Hold your leaf spring pack tight to the axle with the Dorman - OE Solutions Leaf Spring Axle U-Bolt Kit, part number 929-707. This U-bolt repair kit is designed to clamp the leaf spring or spring bundle securely to the underside of the axle. It is a direct-fit replacement for many vehicles, among them the 1969-1974 Chevrolet Blazer, 1975-1999 Chevrolet P30 and 1979-1999 GMC P3500. See the "Vehicles it fits" section for the full list.
- Reliable hardware: the parts in this kit are designed to hold the leaf spring or leaf spring bundle securely against the underside of the axle.
- Check fit: review the dimensions of your leaf springs and other application details to choose the right type and size of U-bolt kit.
- Durable construction: the kit's parts are engineered from quality materials for dependable performance and long service life.
- Trustworthy quality: the kit is backed by a U.S.-based team of product experts and more than a century of automotive experience.
The catalog lists this kit for front and rear leaf spring positions, depending on the vehicle. U-bolts that are stretched, bent or heavily corroded, or a spring pack that has loosened or shifted on the axle, are signs this hardware may need replacing. Before you install the kit, check the vehicle service information for the correct tightening procedure and torque, and for whether any original hardware may be reused.
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Frequently Asked Questions
What does the Dorman 929-707 U-bolt kit do?
It supplies U-bolt hardware designed to clamp the leaf spring or leaf spring bundle securely to the underside of the axle.
Does this U-bolt kit fit a 1969-1974 Chevrolet Blazer?
Yes. The 1969-1974 Chevrolet Blazer is among the listed applications, along with the 1975-1999 Chevrolet P30 and the 1979-1999 GMC P3500. The "Vehicles it fits" section shows the full list.
Is this kit used at the front or rear axle?
The catalog lists it for both front and rear leaf spring positions. Which one applies depends on the vehicle.
What are signs the leaf spring U-bolts may need replacing?
Warning signs include U-bolts that are stretched, bent or heavily corroded, and a spring pack that has loosened or shifted on the axle.
How should the new U-bolts be installed?
Follow the vehicle service information for the correct tightening sequence and torque. It also tells you whether any original hardware may be reused.
