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Heavy Duty Helper Springs
Heavy Duty Helper Springs
If the Heavy Duty Kit is not available for your application, refer to the "Standard Duty" or "Air Lift" sections of this catalog.
See Page 2 for "Remarks Key Chart".
N/A - Not Available
* For model years earlier then those listed refer to the "Standard Duty" section of this catalog.
Ford
³⁄₄
Ton Rear
2-Wheel Drive Truck
Model
*Year Capty.
Kit
Type
Spring
Width
Master
Kit No.
Master Kit Includes:
Remarks
Leaf
Kit No.
Bracket
Kit No.
U-Bolt
Kit No.
F250 under 8500 lbs.
GVW
1997-98 2400 1 2
¹⁄₂
510-339
504-339 503-2110 502-350
F250 under 8500 lbs.
GVW
1985-96 2400 1
3
510-335A
504-335 503-2105 502-350
F250 under 8500 lbs.
GVW
1983-96 2600 4
3
510-325A
500-325 503-290 502-350 OEM style fixed bracket kit
F250HD, 8500 lbs. GVW
and over
1985-97 2400 1
3
510-335D
504-335 503-2105 502-318
F250HD, 8500 lbs. GVW
and over
1983-97 2600 4
3
510-325C
500-325 503-290 502-318 OEM style fixed bracket kit
F250 Superduty
1999-07 2400 4
3
510-343
504-335 503-290A 502-373 OEM style fixed bracket kit
³⁄₄
Ton Rear
4-Wheel Drive Truck
Model
*Year Capty.
Kit
Type
Spring
Width
Master
Kit No.
Master Kit Includes:
Remarks
Leaf
Kit No.
Bracket
Kit No.
U-Bolt
Kit No.
F250 under 8500 lbs.
GVW
1997-98 2400 1 2
¹⁄₂
510-339A
504-339 503-2110 502-376
F250 under 8500 lbs.
GVW
1985-96 2400 1
3
510-335
504-335 503-2105 502-278
F250 under 8500 lbs.
GVW
1983-96 2600 4
3
510-325D
500-325 503-290 502-278 OEM style fixed bracket kit
F250HD, 8500 lbs. GVW
and over
1985-97 2400 1
3
510-335C
504-335 503-2105 502-338
F250HD, 8500 lbs. GVW
and over
1983-97 2600 4
3
510-325E
500-325 503-290 502-338 OEM style fixed bracket kit
F250 Superduty
1999-07 2400 4
3
510-343
504-335 503-290A 502-373 OEM style fixed bracket kit
1 Ton Front
2-Wheel Drive Truck
Model
*Year Capty.
Kit
Type
Spring
Width
Master
Kit No.
Master Kit Includes:
Remarks
Leaf
Kit No.
Bracket
Kit No.
U-Bolt
Kit No.
F450, F550 Superduty 2000-04 1500 6
3
510-770A
— — — Tapered extra leaf kit w/semi-round
U-bolts
F450, F550 Superduty 1999-01 1500 6
3
510-770
— — — Tapered extra leaf kit w/square U-bolts
1 Ton Front
2-Wheel Drive Truck, Van & Motorhome
Model
*Year Capty.
Kit
Type
Spring
Width
Master
Kit No.
Master Kit Includes:
Remarks
Leaf
Kit No.
Bracket
Kit No.
U-Bolt
Kit No.
All w/coil springs
— — — —
—
— — — See section on Super Duty Coils in this
publication.
F Super Duty
1988-97 2250 6
3
510-526
— — — Tapered extra leaf kit
F53 motorhome and F59
commercial chassis
1989-00
— — —
—
— — — See section on Taper Extra Leaves in
this publication.
Ford