Leaf Spring U-Bolts

One of the unsung heroes of any leaf spring suspension upgrade, the humble leaf spring U-bolt has a very important job. The U-bolt keeps the leaf spring secure to the...

One of the unsung heroes of any leaf spring suspension upgrade, the humble leaf spring U-bolt has a very important job. The U-bolt keeps the leaf spring secure to the axle, ensuring proper axle position and maintaining the right suspension geometry and driveline angles.

Yet it’s easy to overlook the need for replacing or upgrading the leaf spring U-bolts in your suspension system. Unless of course, you’re running a modified suspension or non-stock front or rear axle. In those cases, you may need longer or wider leaf spring U-bolts to fit. For instance, adding lift blocks or lowering blocks to your axle could demand 4-inch, 8-inch or even longer leaf spring U-bolts. That’s because the U-bolt will have to compensate for the block, demanding extra length on the leaf spring U-bolt, so you still have enough thread length to secure the U-bolt nuts.

But even if you’re not adding lowering or lift blocks, running an aftermarket spring pack may require longer leaf spring U-bolts too, particularly if the spring pack features additional leaf or helper springs. Additional springs can increase the overall width of the spring pack, meaning that you may be unable to reuse the stock leaf spring U-bolts. So, if you’re upgrading leaf springs, take some measurements to determine if you’ll need new leaf spring U-bolts and, if so, how much longer those U-bolts need to be to complete your leaf spring installation.

If you’re simply swapping out stock parts for new ones, replacing your original leaf spring U-bolts may not be a bad idea either. Given their position on the vehicle, the threads on the end of your front or rear axle U-bolts are often exposed to the worst of what the road has to offer. Mud, salt, large rocks—there are plenty of road hazards that can severely damage your leaf spring U-bolt threads, or bend and distort the ends of the U-bolts entirely. Even up top where they wrap around the axle, your leaf spring U-bolts may be worn, corroded, or otherwise degraded to the point where you’ll need to replace them.

Standard or long, front or rear axle, whatever leaf spring U-bolts you need for your ride, you’ll find them right here, at Summit Racing.

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Dorman Universal Threaded U-Bolt Kits 929-723

U-Bolts, Leaf Springs, 9.625 in. Length, 2.563 in. Width, 0.562 in. Diameter, Black, Steel, Cadillac, Chevy, GMC, Pair

Part Number: RNB-929-723

5.0 out of 5 stars ( 2 )

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Dorman Universal Threaded U-Bolt Kits 660-106

U-Bolt 1/2 X 4-1/4 X 1-13/16 Square

Part Number: RNB-660-106

5.0 out of 5 stars ( 1 )

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Dorman Universal Threaded U-Bolt Kits 35612

U-Bolt, Square, Steel, Zinc, 6.000 in. Length, 2,063 in. Width, 0.500 in. Diameter, Each

Part Number: RNB-35612

5.0 out of 5 stars ( 2 )

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Rough Country Universal Round U-Bolts for 1987-1995 WRANGLER - 7613

U Bolts, Leaf Spring, Round, Steel, Black, 10.50 in. Length, 5/8 in. Diameter, 3.00 in. Width, Jeep, Set of 4

Part Number: ROU-7613

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

Dorman Universal Threaded U-Bolt Kits 35635

U-Bolts, Leaf Spring, Square Style, Steel, Zinc Plated, 0.562 in. Diameter, 8.125 in. Length, 2.625 in. Width

Part Number: RNB-35635

5.0 out of 5 stars ( 1 )

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Rough Country Universal Round U-Bolts for 1987-1995 WRANGLER - 7643

U Bolts, Leaf Spring, Round, Steel, Black, 10.50 in. Length, 9/16 in. Diameter, 3.25 in. Width, Jeep, Set of 4

Part Number: ROU-7643

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

Rough Country Universal Round U-Bolts for 1987-1995 WRANGLER - 7601

U Bolts, Leaf Spring, Round, Steel, Black, 6.75 in. Length, 1/2 in. Diameter, 2.50 in. Width, Jeep, Set of 4

Part Number: ROU-7601

Not Yet Reviewed

Estimated Ship Date: Jan 27, 2026 if ordered today

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Estimated Ship Date: Jan 27, 2026 if ordered today

Rough Country Universal Square U-Bolts 7665

U Bolts, Leaf Spring, Square, Steel, Black, 16.00 in. Length, 5/8 in. Diameter, 2.625 in. Width, Set of 4

Part Number: ROU-7665

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

Rough Country Universal Round U-Bolts for 1987-1995 WRANGLER - 7608

U Bolts, Leaf Spring, Round, Steel, Black, 9.50 in. Length, 9/16 in. Diameter, 3.00 in. Width, Jeep, Set of 4

Part Number: ROU-7608

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

Dorman Universal Threaded U-Bolt Kits 660-103

U-Bolt, Round, Steel, Zinc, 6.500 in. Length, 2.500 in. Width, 0.438 in. Diameter, Pair

Part Number: RNB-660-103

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Dorman Universal Threaded U-Bolt Kits 660-116

Threaded U-Bolt Kit 1/2-20 X 7- 1/2 X 3-1/8

Part Number: RNB-660-116

Not Yet Reviewed

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Dorman Universal Threaded U-Bolt Kits 660-123

U-Bolt 7/16 X 6-3/4 X 3-1/16 Round

Part Number: RNB-660-123

Not Yet Reviewed

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Dorman Universal Threaded U-Bolt Kits 35653

U-Bolt, Round, Steel, Zinc, 7.500 in. Length, 3.000 in. Width, 0.625 in. Diameter, Each

Part Number: RNB-35653

Not Yet Reviewed

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Rough Country Universal Round U-Bolts for 1987-1995 WRANGLER - 7605

U Bolts, Leaf Spring, Round, Steel, Black, 8.50 in. Length, 9/16 in. Diameter, 3.75 in. Width, Jeep, Set of 4

Part Number: ROU-7605

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

Rough Country Universal Round U-Bolts for 1987-1995 WRANGLER - 7618

U Bolts, Leaf Spring, Round, Steel, Black, 9.00 in. Length, 1/2 in. Diameter, 3.75 in. Width, Jeep, Set of 4

Part Number: ROU-7618

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

Rough Country Universal Round U-Bolts for 1987-1995 WRANGLER - 7614

U Bolts, Leaf Spring, Round, Steel, Black, 11.50 in. Length, 5/8 in. Diameter, 3.50 in. Width, Jeep, Set of 4

Part Number: ROU-7614

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

Rough Country Universal Round U-Bolts for 1987-1995 WRANGLER - 7630

U Bolts, Leaf Spring, Round, Steel, Black, 11.50 in. Length, 9/16 in. Diameter, 3.25 in. Width, Jeep, Set of 4

Part Number: ROU-7630

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

Rough Country Universal Round U-Bolts for 1987-1995 WRANGLER - 7659

U Bolts, Leaf Spring, Round, Steel, Black, 13.50 in. Length, 9/16 in. Diameter, 4.125 in. Width, Jeep, Set of 4

Part Number: ROU-7659

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

Rough Country Universal Round U-Bolts for 1987-1995 WRANGLER - 7526

U Bolts, Leaf Spring, Round, Steel, Black, 7.5 in. Length, 1/2 in. Diameter, 2.75 in. Width, Jeep, Set of 4

Part Number: ROU-7526

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

Rough Country Universal Square U-Bolts 7609

U Bolts, Leaf Spring, Square, Steel, Black, 8.50 in. Length, 9/16 in. Diameter, 2.50 in. Width, Set of 4

Part Number: ROU-7609

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

Rough Country Universal Round U-Bolts for 1987-1995 WRANGLER - 7615

U Bolts, Leaf Spring, Round, Steel, Black, 8.50 in. Length, 5/8 in. Diameter, 3.00 in. Width, Jeep, Set of 4

Part Number: ROU-7615

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

Rough Country Universal Round U-Bolts for 1987-1995 WRANGLER - 7616

U Bolts, Leaf Spring, Round, Steel, Black, 10.50 in. Length, 5/8 in. Diameter, 3.50 in. Width, Jeep, Set of 4

Part Number: ROU-7616

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

Rough Country Universal Round U-Bolts for 1987-1995 WRANGLER - 7622

U Bolts, Leaf Spring, Round, Steel, Black, 7.25 in. Length, 9/16 in. Diameter, 3.00 in. Width, Jeep, Set of 4

Part Number: ROU-7622

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

Rough Country Universal Round U-Bolts for 1987-1995 WRANGLER - 7623

U Bolts, Leaf Spring, Round, Steel, Black, 9.50 in. Length, 9/16 in. Diameter, 3.25 in. Width, Jeep, Set of 4

Part Number: ROU-7623

Not Yet Reviewed

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

Dorman Universal Threaded U-Bolt Kits 660-120

U-Bolt, Round, Steel, Zinc, 9.000 in. Length, 3.250 in. Width, 0.500 in. Diameter, Pair

Part Number: RNB-660-120

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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