Ford - F-450/F-550 Superduty Chassis Cab - Overload Helper Spring (Rear)


This product is currently on backorder. Orders with backordered parts will ship in the order they are received once we have stock.

Please contact us for updated stock status
Part Number: 43-1291

Leaf Springs ship directly from our warehouses in NJ and TX. Due to limited inventory, local pickup at our MI shop is not available at this time.


This is a direct replacement for the stock single leaf helper spring.

OEM Number(s) F81Z5560BB
Location on Vehicle Rear
Width 3"
(A) Short End Length 21"
(B) Long End Length 22 1/4"
(A) Short End Bushing N/A
(B) Long End Bushing N/A
(C) Arch 5 1/2"
No of Leaves 1
(D) Pack Thickness 5/8"
Spring Capacity 750lbs
Shipping Weight 17lbs


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