Dorman 43-1749 Suspension - Leaf Spring Helper
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Not sure it fits? Message Year/Make/Model/Engine (2WD/4WD if applicable) and we’ll help confirm compatibility.
Why buy from Koskowski Automotive?
• 50+ years (since 1972) • Dorman Authorized Seller • Fast shipping • Easy returns
Regular price
$79.55
Couldn't load pickup availability
Vehicle Fitment: Use the table below to match your exact configuration. If you don’t see your exact setup, message us before ordering.
Product Description
This leaf helper spring is designed to match the fit and function of the original spring on specified vehicles, and is engineered for durability and reliable performance.
- Direct replacement - this leaf helper spring is designed to match the fit and function of the original spring on specified vehicles
- Restores functionality - reliable replacement for an original part that has failed due to rust and fatigue
- Durable construction - this part is made from quality materials to ensure reliable performance and long service life
- Trustworthy quality - backed by team of product experts in the United States and more than a century of automotive experience
Detailed Applications
| Year | Make | Model | Configuration | Positions | Application Notes |
|---|---|---|---|---|---|
| 2016 | Ford | F-450 Super Duty | Cab and Chassis - Conventional | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2016 | Ford | F-450 Super Duty | Cab and Chassis - Crew Cab | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2016 | Ford | F-450 Super Duty | Cab and Chassis - Extended Cab | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2016 | Ford | F-550 Super Duty | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness | |
| 2015 | Ford | F-450 Super Duty | Cab and Chassis - Conventional | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2015 | Ford | F-450 Super Duty | Cab and Chassis - Crew Cab | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2015 | Ford | F-450 Super Duty | Cab and Chassis - Extended Cab | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2015 | Ford | F-550 Super Duty | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness | |
| 2014 | Ford | F-450 Super Duty | Cab and Chassis - Conventional | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2014 | Ford | F-450 Super Duty | Cab and Chassis - Crew Cab | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2014 | Ford | F-450 Super Duty | Cab and Chassis - Extended Cab | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2014 | Ford | F-550 Super Duty | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness | |
| 2013 | Ford | F-450 Super Duty | Cab and Chassis - Conventional | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2013 | Ford | F-450 Super Duty | Cab and Chassis - Crew Cab | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2013 | Ford | F-450 Super Duty | Cab and Chassis - Extended Cab | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2013 | Ford | F-550 Super Duty | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness | |
| 2012 | Ford | F-450 Super Duty | Cab and Chassis - Conventional | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2012 | Ford | F-450 Super Duty | Cab and Chassis - Crew Cab | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2012 | Ford | F-450 Super Duty | Cab and Chassis - Extended Cab | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2012 | Ford | F-550 Super Duty | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness | |
| 2011 | Ford | F-450 Super Duty | Cab and Chassis - Conventional | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2011 | Ford | F-450 Super Duty | Cab and Chassis - Crew Cab | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2011 | Ford | F-450 Super Duty | Cab and Chassis - Extended Cab | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2011 | Ford | F-550 Super Duty | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness | |
| 2010 | Ford | F-450 Super Duty | Cab and Chassis - Conventional | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2010 | Ford | F-450 Super Duty | Cab and Chassis - Crew Cab | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2010 | Ford | F-450 Super Duty | Cab and Chassis - Extended Cab | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2010 | Ford | F-550 Super Duty | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness | |
| 2009 | Ford | F-450 Super Duty | Cab and Chassis - Conventional | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2009 | Ford | F-450 Super Duty | Cab and Chassis - Crew Cab | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2009 | Ford | F-450 Super Duty | Cab and Chassis - Extended Cab | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2009 | Ford | F-550 Super Duty | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness | |
| 2008 | Ford | F-450 Super Duty | Cab and Chassis - Conventional | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2008 | Ford | F-450 Super Duty | Cab and Chassis - Crew Cab | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2008 | Ford | F-450 Super Duty | Cab and Chassis - Extended Cab | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
| 2008 | Ford | F-550 Super Duty | Rear | 1 Leaf; Full Taper; 675 Lb. Average Capacity; 9/16 In. Leaf Thickness |
Product Specifications
| Color: | Black |
|---|---|
| Leaf Spring Load Increase Strength: | 675 lb |
| Length: | 43.25 in |
| Material: | Steel |
| Maximum Load Rating: | 675 lb |
| Mounting Hardware Included: | No |
| Package Contents: | 1 Leaf Spring |
| Package Quantity: | 1 |
| Packaging Type: | Box |
| Selling Package Quantity UOM: | Piece |
| Thickness: | 0.59 in |
| Width: | 3 in |
OE Numbers
| NON-DIRECT OE CROSS | |
|---|---|
| 6C345560BB | FORD MOTOR COMPANY |
| 6C345A975BB | FORD MOTOR COMPANY |
| 6C3Z5560BB | FORD MOTOR COMPANY |