U-Bolt Spring Plates
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U-Bolt Spring Plates

U-Bolt Spring Plates

Top and bottom spring plates for heavy duty trucks and trailers u-bolts.

Found 55 Matching Products
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  1. Top Plate
  1. Bottom Plate
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  1. Chevrolet
  2. Ford
  3. Freightliner
  1. Front of rear, Use with M5478 flanged bolt
  2. Fruehauf
  3. GM
  1. GM Trucks
  2. Hendrickson
  3. International
  1. Kenworth
  2. Mack
  3. Peterbilt
  1. Primaax
  2. Reyco
  3. Trailmobile
  1. Volvo-White
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SKU M1915
$23.06

U-bolt top plate M1915 Ford F-250 and F-350 Super Duty trucks, narrow frame stamped type.   Details

20+ In Stock as of July 23, 2021 19:40 PM EST.
  • Application:Ford
  • Ford Number:3C3Z5798AA, 3C3Z-5798-AA, F81Z5798AA, F81Z-5798-AA
  • MPN: M1915
SKU M1023
$37.03

U-bolt bottom plate for GM pickups and SUV's.   Details

6 In Stock as of July 23, 2021 19:40 PM EST.
  • Application:Chevrolet
  • Batco Number:GMC
  • GMC Number:15711787, 25761308
  • Note:Rear spring
  • MPN: M1023
SKU E348-22
$22.05

GM U-Bolt bottom plate. Replaces 338-833, 12000 and 3996593.   Details

20+ In Stock as of July 23, 2021 19:40 PM EST.
  • Application:GM
  • Dayton Number:338-833
  • Flagg Number:E348-22
  • Gaumers Number:12000
  • GMC Number:3996593
  • Note:Rear spring
  • Manufacturers Part Number:3996593
  • MPN: E348-22
SKU M1936
$16.95

U-bolt top plate M1936 for Ford rear 3 inch wide spring.   Details

5 In Stock as of July 23, 2021 19:40 PM EST.
  • Application:Ford
  • Ford Number:F5TZ5798CA
  • Note:Rear, 3 inch spring width for F-Series and E-Series Super Duty.
  • MPN: M1936
SKU E345-43
$17.27

U-bolt top plate E345-43 for Ford rear 3 inch wide spring.   Details

6 In Stock as of July 23, 2021 19:40 PM EST.
  • Application:Ford
  • Dayton Number:338-824
  • Flagg Number:E345-43
  • Ford Number:D1HZ5708A, D8HZ5708B
  • Gaumers Number:02045
  • Note:Rear, 3 inch spring width for Ford B, CF, CL, F, L, LN rear single axle suspension. Ford rear C-M-P series, S/A double eye 2-1/2 inch and 3 inch spring.
  • MPN: E345-43
SKU 16868-01
$13.41

U-bolt top plate 16868-01 for Reyco applications. U-bolts down fabricated.   Details

4 In Stock as of July 23, 2021 19:40 PM EST.
  • Application:Reyco
  • Batco Number:09-2886
  • Dayton Number:338-1367
  • Euclid Number:E2907A
  • Flagg Number:E3032
  • Reyco Number:160660, 007700, 071600, 2333401
  • Note:U-Bolts down fabricated
  • MPN: 16868-01
SKU E321-75
$12.71

U-bolt top plate E321-75 for Peterbilt Air Leaf suspensions.   Details

3 In Stock as of July 23, 2021 19:40 PM EST.
  • Application:Peterbilt
  • Batco Number:09-8030
  • Dayton Number:338-725
  • Euclid Number:E4782
  • Flagg Number:E321-75
  • Gaumers Number:07530
  • Peterbilt Number:0301657, 0307865
  • MPN: E321-75
SKU FLNC20MMT
$4.98

Flanged lock nut with tab for front of rear applications. M20-2.5 threads, 2.5 pitch.   Details

9 In Stock as of July 23, 2021 19:19 PM EST.
  • Application:Front of rear, Use with M5478 flanged bolt
  • OEM Number:N806367S60
  • MPN: FLNC20MMT
SKU M1284
$24.18

U-bolt top plate M1284 for Ford B, CF, CL, F, L, LN models with rear single axle and Ford C-M-P Seri...   Details

7 In Stock as of July 23, 2021 19:40 PM EST.
  • Application:Ford
  • Automann Number:M1284
  • Ford Number:D8HZ5780B
  • UPC: 889626092046
  • MPN: M1284
SKU M1913
$24.95

U-bolt top plate M1913 fits dual rear wheel Ford E-Series vans with 1/2 inch center bolt nut.   Details

Typically ships in 3 to 4 business days.
  • Application:Ford
  • Ford Number:8C24-5798-AA, 8C2A5798AA, 8C2Z5798B, 8C2Z-5798-B
  • MPN: M1913
SKU M1924
$55.95

U bolt bottom plate for Ford F350, F450, and F550. 4 in round axle.   Details

6 In Stock as of July 23, 2021 19:40 PM EST.
  • Application:Ford
  • Automann Number:M1924
  • Ford Number:E8TZ5796A
  • Note:Rear spring with 4 in axle Tube.
  • MPN: M1924
SKU 338-1107
$27.37

U-bolt top plate 338-1107 for all Fruehauf F-series suspensions.   Details

6 In Stock as of July 23, 2021 19:40 PM EST.
  • Application:Fruehauf
  • Batco Number:09-2150
  • Dayton Number:338-1107
  • Euclid Number:E2840
  • Flagg Number:E112
  • Fruehauf Number:UCE008801001
  • Note:All F-Series
  • MPN: 338-1107

What are U-Bolt Spring Plates?

U-bolt spring plates will be used on many suspension designs that use leaf springs and U-Bolts. U-bolt plates can be used on the top of the spring, the bottom of the axle, or both. U-bolt plates will allow the clamping force of the U-bolts to be spread out over a larger area, preventing damage. The use of U-bolt plates prevents breakage of the leaf springs by limiting the possibility of high stress points where the leaf spring and U-bolts meet and allows force to be effectively transferred to the axle housing without causing cracks or damage.

What are U-Bolt Top Plates?

U-bolt top plates are used to protect the leaf springs and to guide the position of the U-bolts. Top plates will have an opening to position the plate over the center bolt and there will be a channel to locate each U-bolt on the plate. The channels will hold the U-bolts in a position that keeps them square to the axle when they are secured. Some top plates will include bump stop towers to help limit suspension travel and they may also provide shock absorber or torque rod mounting locations.

What are U-Bolt Bottom Plates?

U-bolt bottom plates allow the clamping force to be applied to the axle on suspensions that orient the U-bolts downward with the bend at the top curving over the leaf spring. The bottom plate will be contoured to match the curve of the axle to evenly spread the force and the U-bolts will pass through the plate. When washers and nuts are secured to the U-bolt they will push against the plate as they are tightened clamping the axle and leaf spring pack together.


What Causes U-Bolt Leaf Spring Plates to Fail?

If at some point during the life of the suspension the U-bolts loosened there may be wear in both the top and bottom U-bolt plates. As suspension components shift, they will cause wear between the components that are moving. When servicing the suspension worn top and bottom plates should be replaced to prevent damage to new components.

When replacing U-bolt spring plates, it is usually best to use an OEM part number or a casting number and then measuring to verify the correct replacement. If you are not able to find the U-bolt spring plates that you need for your vehicle, please give us a call at 1-800-358-4751 or reach out to us at TruckSpring.com and we will be glad to help.


U-Bolt Spring Plates Reviews

Out of 3 reviews, the average customer rating for U-Bolt Spring Plates: 5 out of 5.

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