Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-1169	Rear	2,485lbs	5

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-489	Rear	2,775lbs	7

*This spring was not originally offered and is an upgrade for the Colorado and Canyon. The centerbolt on the Colorado and Canyon is originally 5/16 and installing this spring will require modification to the centerbolt head or axle seat hole as it comes with a 3/8 centerbolt.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-315XX	Rear	3,375lbs	6

This leaf spring fits many heavy & medium duty semi / dump truck applications.  Such as GM, Chevy, Ford, and Sterling. 

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-315X	Rear	2,800lbs	5

This leaf spring fits many heavy & medium duty semi / dump truck applications.  Such as GM, Chevy, Ford, and Sterling. 

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-315	Rear	2,250lbs	4

This leaf spring fits many heavy & medium duty semi / dump truck applications.  Such as GM, Chevy, Ford, and Sterling.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-525	Rear	1,290lbs	4

*This spring was not originally offered and is an upgrade for the Colorado and Canyon.The centerbolt on the Colorado and Canyon is originally 5/16 and installing this spring will require modification to the centerbolt head or axle seat hole as it comes with a 3/8 centerbolt.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-499	Rear	3,390lbs	8

*This spring was not originally offered and is an upgrade for the Colorado and Canyon. The centerbolt on the Colorado and Canyon is originally 5/16 and installing this spring will require modification to the centerbolt head or axle seat hole as it comes with a 3/8 centerbolt.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-547HD	Rear	3,500lbs	8/1

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-603HD	Rear	4,500lbs	10/1

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-603	Rear	3,760lbs	10/1

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-617	Rear	3,995lbs	10

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-801	Rear	575lbs	1

This is a helper main leaf for the stock main leaf.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-843	Rear	10,500lbs	9 (5/4)

*The Topkick/Kodiak has three different style of suspensions. This spring is designed for the single eye/slipper w/hook end style suspension. This will not fit tapered double eye or radius arm suspensions.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-855	Rear	1,210lbs	3

This is a helper leaf for the stock main leaf.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-881HD	Rear	2,750lbs	4

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-907	Rear	2,760lbs	6

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1813	Rear	3,000lbs	4

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1681HD	Rear	4,400lbs	5/1

This is a Heavy Duty replacement for the stock leaf spring.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1033HD	Rear	2,250lbs	4/1

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

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-384	Front	1,100lbs	3

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-903	Rear	1,350	6

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-901	Rear	4,350lbs	8

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-731	Rear	800lbs	4

*For dual rear wheel only

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-721HD	Rear	4,500lbs	12

This is a heavy duty upgrade from stock and is only for the F-350 Dually

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1783HD	Rear	2,500lbs	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
43-1747HD	Rear	5,500lbs	10

This is a Heavy Duty upgrade for the stock springs.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1747	Rear	5,500lbs	10

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.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1339HD	Rear	7,200lbs	10

This is a heavy duty upgrade for the OEM factory spring. 

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1339	Rear	5,100lbs	11

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

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1337	Rear	10,350lbs	5/4

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1279	Rear	525lbs	1

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1277	Rear	750lbs	1

OEM #  F81A5588DC / F81Z5588DA

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.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1157	Rear	2,775lbs	3/1

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

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1085SHD	Rear	5,000lbs	10

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

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1085HD	Rear	4,000lbs	10

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

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1085	Rear	3,460lbs	9

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

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1041HD	Rear	3,750lbs	6/1

This is a Heavy Duty Upgrade.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1041	Rear	2,775lbs	4/1

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

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1033	Rear	1,685lbs	3/1

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

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
34-1633	Rear	2,800lbs	3/1

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
34-1345HD	Rear	4,000lbs	8

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
34-1339HD	Rear	2,600lbs	5

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
34-1337	Rear	1,705lbs	3/1

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
34-1335	Rear	3,050lbs	3/1

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
34-1329	Rear	2,105lbs	4/1

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

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-403	Rear	2,350lbs	6

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-1649HD	Rear	3,400lbs	4/1