Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1199HD	Rear	2,200lbs	4/1

This is a HEAVY DUTY upgrade for the OEM factory spring.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1555HD	Rear	2,400lbs	4/1

This is an Extra Heavy Duty replacement for the stock three leaf or the four leaf version.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1555	Rear	1,900lbs	3/1

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1679	Rear	1,500lbs	2/1

This is a Standard Duty replacement for the stock three leaf spring.

This part fits the following make/models: 2004 to 2014 - F-150 What's In The Box: 1 Shackle

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1185	Rear	1,434	3

This is a direct replacement/upgrade for the OEM factory spring.

This part fits the following make/models: 1997 - 2004 Ford F150 1997 - 1998 F250* 2wd and 4wd trucks with 2-1/2" wide springs *Non Superduty  This is a BRAND NEW Leaf spring Hanger for the rear end of the rear leaf spring on 1997 - 2004 Ford F150 and the 1997 -...

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1679-2	Rear	N/A	1

This is a Clip Leaf for the standard 43-1679 spring leaf.