Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-818	Front	2,630lbs	2

This is an upgrade from the stock springs on the Excursion with an additional 600lbs capacity per spring, making the total front suspension capacity 1200lbs heavier than stock. These springs also offer an average of 2" of lift above stock for the front of the truck. Standard versions are also...

This part fits the following make/models: 1999 - 2008 Ford F250/F350/F450/F550 Superduty and Excursion This eyebolt measures 18mm x 150mm, comes complete with the nut and is designed specifically for this front eye application. Changing the front springs on these trucks almost always requires cutting the old eyebolt out because the factory...

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-818HD	Front	3,950lbs	3

This is a major upgrade from the stock springs. Standard versions are also available for normal duty applications. These springs are ideal for work trucks that are loaded with commercial grade snow plows.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1291	Rear	750lbs	1

OEM # F81Z5560BB / F81A5560BD   This is a direct replacement for the stock single leaf helper spring.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1289HD	Rear	8,000lbs	10

This is an HD (Heavy Duty) version of the original spring. It's heavier than what was originally offered on these trucks from Ford. 

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
34-1339	Rear	2,025lbs	4/1

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1289	Rear	5,900lbs	10

This is the original version of this spring and there is also an HD (Heavy Duty) version available.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1291-T	Rear	750lbs	1

OEM # F81Z5560BB / F81A5560BD   This is a direct replacement for the stock single leaf helper spring.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
34-1337	Rear	1,705lbs	3/1