Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
34-1451HD	Rear	2,200lbs	4/1

This is an upgrade for the stock 4 leaf spring. 

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
34-1451	Rear	1,700lbs	3/1

This is a direct replacement for the stock 4 leaf spring.

This part fits the following make/models: 2002 - 2008 Dodge Ram 1500 It's a replacement for the original OEM parts and has the same specifications to the original. What's In The Box: 1 Shackle

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
34-1487	Rear	1,700lbs	3/1/Wedge

This is a direct replacement for the stock 4 leaf spring.