Dayton 43-1085HD Extra Heavy-Duty Rear Leaf Spring 10-Leaf 4000 lb Capacity

The Dayton Parts 43-1085HD is an extra heavy-duty rear leaf spring assembly engineered as a direct OE replacement for full-size van applications. Built from precision steel alloy and subjected to oil tempering and heat treatment processes, this spring delivers uniform strength and long-lasting durability under demanding load conditions.

Key Features:

• 10-leaf construction with a linear spring type for consistent, progressive load response
• 4,000 lb. spring capacity for reliable heavy-duty performance
• 3 in. leaf width for a robust, stable spring pack
• Short end (A) dimension: 23-13/16 in. | Long end (B) dimension: 31 in.
• Arch height: 1-7/8 in. | Pack thickness: 4.01 in.
• Leaf arrangement: 10/401 — A End: RB-198 bushing, B End: RB-157 bushing
• Precision steel alloy construction — oil tempered and heat treated for uniform strength throughout
• Direct OE replacement design for a hassle-free, factory-like installation
• Sold individually — install in matched pairs for a level ride and balanced suspension performance

Warranty: Covered by a 12-month Dayton Parts limited warranty.

Dayton Parts has been manufacturing leaf springs since 1922 and is recognized as one of the largest aftermarket leaf spring providers in North America. The 43-1085HD is part of their extensive suspension catalog covering light, medium, and heavy-duty vehicles.