Leaf Spring Insulator For Heavy Duty Trucks & Trailers
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Spring Insulators

Spring Insulators

Spring Insulators, Insulator Box, Bolts and Pads. OEM quality Spring Insulators for heavy duty trucks and trailers.

Found 13 Matching Products
Filter the list of Matching Products by selecting any of these options:
  1. Rear of Front
  1. Trailer
  1. Ford
  2. GMC
  1. Mack
  2. Chevrolet
  1. Oldsmobile
  2. Pontiac
  1. Chevy
  2. Single Point Suspensions
Grid List
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SKU 325-110
$40.48
Lower Insulator | Mack | SS34-38-44 Series

Spring insulator for Mack SS34-38-44 series suspensions. Lower insulator is 6.0 inch x 6.   Details

18 In Stock as of July 24, 2021 19:24 PM EST.
  • Application:Mack
  • Batco Number:09-7594
  • BWP Number:M-2112
  • Dayton Number:325-110
  • Flagg Number:MP2
  • Leland Number:SB1512
  • Mack Number:10QK36B, 10QK36C, 10QK388, 21036254
  • Transpro Number:M9D
  • Volvo Number:21036254
  • MPN: 325-110
SKU 325-112
$33.86
Upper Insulator | Mack | SS34-38 series

Spring insulator for Mack SS34-38 series suspensions, 4 inch wide springs. Upper insulator is 6.   Details

12 In Stock as of July 24, 2021 19:36 PM EST.
  • Application:Mack
  • Automann Number:ABP1, ABP1P
  • Batco Number:09-7593
  • BWP Number:M-2110
  • Dayton Number:325-112
  • Euclid Number:E2917
  • Flagg Number:MP1
  • Leland Number:SB1494
  • Mack Number:10QK343P7, 10QK365, 10QK365A, 10QK367, 25121508
  • Meritor Number:R302917
  • Midland Number:CS71638B
  • Volvo Number:25121508
  • MPN: 325-112
SKU 338-728
$169.70
Insulator Box | Mack| 4 Inch Spring

Insulator box for Mack SS34-38 and SS44-SWS573 Camelback suspensions. Fits 4.   Details

4 In Stock as of July 24, 2021 19:21 PM EST.
  • Application:Mack
  • Automann Number:M1068
  • Batco Number:09-7499
  • Dayton Number:338-728
  • Euclid Number:E411-62
  • Gaumers Number:06462
  • Mack Number:52QK418BP5, 25163160
  • Midland Number:CS71324B
  • Volvo Number:25163160
  • MPN: 338-728
SKU GM2
$3.18
Insulator Bolt | General Motors | 7/16"-20 Threads, 1-15/16 inch Long

Spring insulator bolt for General Motor vehicles. 1.875 inches long with 7/16-20 threads, 1.   Details

5 In Stock as of July 24, 2021 19:21 PM EST.
  • Application:Chevrolet
  • Application:GMC
  • Automann Number:MGM6
  • Flagg Number:GMP2, GM2
  • GMC Number:481949
  • MPN: GM2
SKU 325-113
$36.02
Upper Insulator | Mack | SS44 series

Spring insulator for Mack SS44 series suspensions. Upper insulator is 6 inch length x 3.   Details

8 In Stock as of July 24, 2021 19:36 PM EST.
  • Application:Mack
  • Automann Number:ABP4
  • Batco Number:09-7595
  • BWP Number:M-2111
  • Dayton Number:325-113
  • Euclid Number:E2919
  • Flagg Number:MP4
  • Leland Number:SB1513
  • Mack Number:10QK370, 25115012
  • Meritor Number:R302919
  • Midland Number:CS71640B
  • Volvo Number:25115012
  • MPN: 325-113
SKU 325-114
$67.23
Lower Insulator | Mack | SS50-58-65

Spring insulator for Mack SS34-38-44 series suspensions. Lower insulator is 7.0 inch x 7.   Details

4 In Stock as of July 24, 2021 19:24 PM EST.
  • Application:Mack
  • Automann Number:ABP6
  • Dayton Number:325-114
  • Euclid Number:E-3680
  • Gaumers Number:06004
  • Mack Number:10QK343P11, 10QK343P2, 10QK344, 10QK372, 25124724
  • Meritor Number:R303080, R303680
  • Midland Number: CS71646B
  • UPC: 889626089602
  • MPN: 325-114
SKU 325-142
$9.03
Rubber Insulator | Neway, Page, Watson Chalin

Rubber spring insulator for Neway, Page, and Watson Chalin single point suspensions. 5.   Details

1 In Stock as of July 24, 2021 19:27 PM EST.
  • Application:Single Point Suspensions
  • Location:Trailer
  • Automann Number:MTN457
  • Batco Number:09-4424
  • BWP Number:M-1701, M1701
  • Dayton Number:325-142
  • Euclid Number:E1330, E-8670
  • Flagg Number:N254, N254UB
  • Leland Number:SA1614
  • Meritor Number:R301330
  • Neway Number:91028089
  • Watson & Chalin #:SP0040
  • MPN: 325-142
SKU E531-43
$27.95
Spring Insulator | Ford B and F Series | Front

Spring insulator for Ford Front B&F 500-750 '63 to '79. Replaces Ford E6HZ5A342A.   Details

2 In Stock as of July 24, 2021 19:29 PM EST.
  • Application:Ford
  • Location:Rear of Front
  • Automann Number:M1308
  • Dayton Number:334-660
  • Flagg Number:E531, E531-43
  • Note:Use with M110 or M1316 Hanger
  • MPN: E531-43
SKU E596-22
$17.28
Spring Insulator | GM C50 - C70 Series Trucks | Front

Spring insulator for 1983-91 GM C50-70 series trucks.   Details

Typically ships in 2 to 3 business days.
  • Application:Chevrolet
  • Application:GMC
  • Location:Rear of Front
  • Automann Number:M1438
  • Dayton Number:334-732
  • Flagg Number:E596-22
  • GMC Number: 2073779, 3865198
  • Note:Fits springs 22-334
  • MPN: E596-22
SKU AST-2
$28.75
Installation kit | Fiberglass Spring Conversion | Chevy Astro, GMC Safari

Fiberglass to steel leaf spring conversion kit. For Astro and Safari Vans.   Details

3 In Stock as of July 24, 2021 19:21 PM EST.
  • Application:Chevy
  • Application:GMC
  • Automann Number:AST001
  • Dayton Number:AST-2
  • Note:For use with AST-1 springs only. Conversion kit covers (2) springs.
  • Instructions:AST-2 Conversion kit instructions.
  • MPN: AST-2
SKU E457-22
$15.20
Insulator Pad | General Motors | Rear of Front

Spring insulator pad for 1983-1991 General Motors C50, C60 and C70 suspensions.   Details

Typically ships in 3 to 4 business days.
  • Application:Chevrolet
  • Application:GMC
  • Location:Rear of Front
  • Dayton Number:334-733
  • Flagg Number:E457-22
  • GMC Number:2073778, 3865199
  • MPN: E457-22
SKU GM1
$6.75
Rubber Insulator | GM Nova, Camaro, Omega, Ventura

Spring insulator for Chevy Nova, Camaro, Oldsmobile Omega and Pontiac Ventura. 4.28 inch length x 2.   Details

Typically ships in 3 to 4 business days.
  • Application:Chevrolet
  • Application:Pontiac
  • Application:Oldsmobile
  • Automann Number:MGM4
  • Flagg Number:GM1,GMP1
  • GMC Number:3930054
  • UPC: 889626088995
  • MPN: GM1

What are Leaf Spring Insulators?

Leaf spring insulators are used to absorb shock and vibration on suspensions that require it. Spring insulators are typically made of rubber and they will be positioned between the leaf springs and rigid suspension components. Spring insulators are available in varying thicknesses and sizes and they should be measured before ordering or ordered using OEM part numbers.

On high capacity Mack suspensions, the camelback springs do not have spring eyes. Instead, insulators are placed above and below the leaf spring on both ends of the spring and the spring is clamped between these insulators. In some cases, this is the only rubber in the suspension besides the tires on the truck. Due to the extreme demand placed on these suspensions the amount of rubber is limited to increase the durability and the suspension capacity. Since leaf spring insulators are made from rubber, they will experience wear and tear over time. Rubber will deteriorate naturally and if exposed to oil the deterioration may be accelerated. Due to the design of Mack suspensions repairs involving the springs should be carried out identically for both sides to avoid the possibility of the axles moving out of alignment.

If you are having trouble finding the spring insulators that you are looking for, please reach out to us at Truckspring.com or give us a call at 1-800-358-4751. We will be glad to help you find the parts you need.

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