Dorman 43-1745 Suspension - Leaf Spring
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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
$626.27
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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
Properly functioning leaf springs hold the weight and payload of a vehicle or trailer and are essential to suspension performance and passenger comfort. Check the product attributes to select the right leaf spring for your application.
- Direct replacement - these leaf springs are designed to match the fit and function of the original leaf springs on specific vehicles or trailers
- Ideal solution - seamlessly replaces leaf springs damaged by overloading, collision, cracking or corrosion, or are due for replacement
- Durable construction - made from quality materials to strict specifications to ensure reliable performance and long service life
- Trustworthy quality - engineered, manufactured and supported by the premier aftermarket leaf spring provider in the USA
Detailed Applications
| Year | Make | Model | Configuration | Positions | Application Notes |
|---|---|---|---|---|---|
| 2016 | Ford | F-450 Super Duty | Cab and Chassis - Conventional | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2016 | Ford | F-450 Super Duty | Cab and Chassis - Crew Cab | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2016 | Ford | F-450 Super Duty | Cab and Chassis - Extended Cab | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2016 | Ford | F-550 Super Duty | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity | |
| 2015 | Ford | F-450 Super Duty | Cab and Chassis - Conventional | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2015 | Ford | F-450 Super Duty | Cab and Chassis - Crew Cab | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2015 | Ford | F-450 Super Duty | Cab and Chassis - Extended Cab | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2015 | Ford | F-550 Super Duty | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity | |
| 2014 | Ford | F-450 Super Duty | Cab and Chassis - Conventional | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2014 | Ford | F-450 Super Duty | Cab and Chassis - Crew Cab | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2014 | Ford | F-450 Super Duty | Cab and Chassis - Extended Cab | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2014 | Ford | F-550 Super Duty | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity | |
| 2013 | Ford | F-450 Super Duty | Cab and Chassis - Conventional | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2013 | Ford | F-450 Super Duty | Cab and Chassis - Crew Cab | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2013 | Ford | F-450 Super Duty | Cab and Chassis - Extended Cab | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2013 | Ford | F-550 Super Duty | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity | |
| 2012 | Ford | F-450 Super Duty | Cab and Chassis - Conventional | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2012 | Ford | F-450 Super Duty | Cab and Chassis - Crew Cab | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2012 | Ford | F-450 Super Duty | Cab and Chassis - Extended Cab | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2012 | Ford | F-550 Super Duty | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity | |
| 2011 | Ford | F-450 Super Duty | Cab and Chassis - Conventional | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2011 | Ford | F-450 Super Duty | Cab and Chassis - Crew Cab | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2011 | Ford | F-450 Super Duty | Cab and Chassis - Extended Cab | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2011 | Ford | F-550 Super Duty | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity | |
| 2010 | Ford | F-450 Super Duty | Cab and Chassis - Conventional | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2010 | Ford | F-450 Super Duty | Cab and Chassis - Crew Cab | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2010 | Ford | F-450 Super Duty | Cab and Chassis - Extended Cab | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2010 | Ford | F-550 Super Duty | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity | |
| 2009 | Ford | F-450 Super Duty | Cab and Chassis - Conventional | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2009 | Ford | F-450 Super Duty | Cab and Chassis - Crew Cab | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2009 | Ford | F-450 Super Duty | Cab and Chassis - Extended Cab | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2009 | Ford | F-550 Super Duty | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity | |
| 2008 | Ford | F-450 Super Duty | Cab and Chassis - Conventional | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2008 | Ford | F-450 Super Duty | Cab and Chassis - Crew Cab | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2008 | Ford | F-450 Super Duty | Cab and Chassis - Extended Cab | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
| 2008 | Ford | F-550 Super Duty | Rear | 10 Leaf; Includes Helper Springs; 5.775 In. Pack Thickness; 6,175 Lb. Average Capacity |
Product Specifications
| Axle Modification Needed: | No |
|---|---|
| Axle Orientation: | Rear |
| Bushing Color: | Black |
| Bushings Included: | Yes |
| Color: | Black |
| End 1 Attachment Type: | Up Turned Eye |
| End 2 Attachment Type: | Up Turned Eye |
| Helper Spring: | No |
| Leaf Quantity: | 10 |
| Leaf Spring Arch Length: | 3 in |
| Leaf Width: | 3 in |
| Length Axis 1: | 25 in |
| Length Axis 2: | 30.75 in |
| Length B: | 30.75 in |
| Load Rate: | 6175 lb |
| Material: | Steel |
| Mounting Hardware Included: | No |
| Pack Thickness: | 6.03 in |
| Package Contents: | 1 Leaf Spring |
| Package Quantity: | 1 |
| Packaging Type: | Box |
| Spring Arch Length: | 5.5 in |
| Spring Research Institute Number: | 43-1745 |
| Suspension Grade Type: | Standard |
OE Numbers
| DIRECT OE CROSS | |
|---|---|
| 6C345560BB | FORD MOTOR COMPANY |
| 6C345A975BB | FORD MOTOR COMPANY |
| 6C3Z5560BB | FORD MOTOR COMPANY |