Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
34-1341	Rear	2,470lbs	3/1PD

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
34-800	Front	1,900lbs	6

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1749	Rear	675lbs	1

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-623HD	Rear	4,000lbs	10

*1978 - 1991 E-350 except passenger vans. This is a direct heavy duty upgrade for the OEM factory spring. 

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-623	Rear	3,235lbs	10

*1978 - 1991 E-350 except passenger vans. This is a direct replacement/upgrade for the OEM factory spring. 

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-485	Rear	2,400lbs	6/3

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

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-701HD	Rear	4,295lbs	6/1

This is a Heavy Duty upgrade for the stock springs. Its perfect for plowing and other heavy duty applications.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-695HD	Rear	3,100lbs	7

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

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-630	Front	2,250lbs	2

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-571	Rear	2,450lbs	4/1

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

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-516	Front	2,200lbs	2/PD

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-723	Rear	1,655lbs	3/1

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

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1159	Rear	1,100lbs	3/1

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
34-768	Front	1,750lbs	3

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-442HD	Front	2,760lbs	8/1

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-503	Rear	1,950lbs	8

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-905	Rear	2,200lbs	5

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-447	Rear	1,600lbs	4/1

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-1209HD	Rear	4,600lbs	10

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-1209	Rear	3,710lbs	9

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-937XL	Rear	1,000lbs	1

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-433	Rear	1,050lbs	1

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-901	Rear	2,850lbs	5/1

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-442	Front	2,190lbs	8/1

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-943	Rear	3,760lbs	9 (8/1)

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-1419	Rear	1,200lbs	4

*This spring originally came on the 4wd model, and while it is compatible with the 2wd model it will sit taller than stock.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-1143	Rear	1,350lbs	3/1

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
22-1175	Rear	3,710lbs	3

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
22-315X	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
22-499	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
22-603	Rear	3,760lbs	10/1

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
43-1813	Rear	3,000lbs	4

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
43-721HD	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
43-1747HD	Rear	5,500lbs	10

This is a Heavy Duty upgrade for the stock springs.

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
43-1679-2	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
43-1279	Rear	525lbs	1

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
34-1339HD	Rear	2,600lbs	5

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
22-1649	Rear	2,700lbs	4/1

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
34-1465HD	Rear	3,300lbs	5/1PD

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
34-1465	Rear	2,800lbs	4/2PD

We have built a suspension package for your 1999 through 2006 Silverado or Sierra 1500 that includes everything you'll need for a complete replacement. Leaf Springs: Click the links below to learn more about each leaf spring version and their respective capacity differences. 3 Leaf 4 Leaf*  5 Leaf* 6...

This leaf spring fits the following make/models: 1974 to 2019 Heavy Duty Trucks with Hendrickson Walking Beam w/ Leaf Spring Suspensions using 1-3/8" pins Specifications: 4" wide 12 leaves  (3/.625  9/.587) 17-1/16" x 20-11/16"  Main Leaf Length Includes Bushing (1-3/8" I.D.) 29,000lbs Capacity SRI Certified  These ship freight only.  Springs...

Part Number	Location on Vehicle	Spring Capacity	Number of Leaves
69-275	Rear	1250lbs	2/1