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Specifications

The Automann USA 55‑1222 6 Leaf Spring 4/2/SE is a premium suspension solution designed for heavy commercial trucks requiring reliable front suspension performance. With a 6‑leaf configuration, 25" short end and 29" long end lengths, and a rugged 8,850 lb load capacity, it brings strength and stability back to your vehicle’s front end. Engineered to match OEM fit and performance, this leaf spring includes standard eye bushings (TB26/MTB76) for secure mounting and consistent operation, making it ideal for service, repair, and fleet maintenance.


Applications International
Spring Type Multi-Leaf Spring
Spring Eye 2
Eye Type (S.E./L.E.) STD/STD
Width 4
S.E. (A) 25
L.E. (B) 29
Bushing A End (S.E.) TB26, MTB76
Bushing B End (L.E.) TB26, MTB76
Nos. Leaves 6
Arch (C) 5-3/4
Capacity 8850
OEM # 3521859C91
MFG I-H, Navistar
Notes (B. O. M) 4X4/558 2/6251/360*25X29 C:5-3/4 TB26/TB26
Center Bolt Size 1/2 X 4-1/2
Center Bolt Head Size 3/4D X 7/16H
Weight
140.3 lbs

Compatibility

International PayStar 5000 (years not specified)
International HX Series (years not specified)
International CT Series (years not specified)


Alternative Part Numbers

  • ATM551222
  • Automann 55-1222
  • Power10 Parts 55-1222-ME

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