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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
Ford
1 Ton Front
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.
F350
1980-97 2600 6
3
510-476
— — — EXTRA HEAVY DUTY tapered extra leaf
kit. Lightly loaded trucks may
experience alignment difficulties.
F350
1980-97 1300 6
3
510-476L
— — — HEAVY DUTY tapered extra leaf kit.
F350 w/solid front axle 1980-97 1300 6
3
510-536
— — — Tapered extra leaf kit.
F350, 450, 550
Superduty
2000-04 1500 6
3
510-770A
— — — Tapered extra leaf kit w/semi-round
U-bolts
F350, 450, 550
Superduty
1999-01 1500 6
3
510-770
— — — Tapered extra leaf kit w/square U-bolts
1 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.
F350 DRW chassis cab 1980-97 2000 4 2
¹⁄₄
510-323
500-323 503-2114 502-300 OEM style fixed bracket kit, 2
¹⁄₄
" wide
springs
F350 SRW pickup and
chassis cab
1985-97 2400 1
3
510-335D
504-335 503-2105 502-318
F350 SRW pickup and
chassis cab
1980-97 2600 4
3
510-325C
500-325 503-290 502-318 OEM style fixed bracket kit, 3" wide
springs
F350 DRW pickup
1985-97 2400 1
3
510-335C
504-335 503-2105 502-338
F350 Superduty
1999-05 2400 4
3
510-343
504-335 503-290A 502-373 OEM style fixed bracket kit
F450 Superduty
1999-10 2600 3
3
510-341
504-341
— 502-374 Replacement for single leaf OE helper.
F550 Superduty
1999-10 2600 3
3
510-341A
504-341
— 502-375 Replacement for single leaf OE helper
1 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.
F350 DRW chassis cab 1981-97 2000 4 2
¹⁄₄
510-323A
500-323 503-2114 502-352 OEM style fixed bracket kit, 2
¹⁄₄
" wide
springs
F350 SRW
1985-97 2400 1
3
510-335B
504-335 503-2105 502-282
F350 SRW
1981-97 2600 4
3
510-325B
500-325 503-290 502-282 OEM style fixed bracket kit
F350 Superduty
1999-05 2400 4
3
510-343
504-335 503-290A 502-373 OEM style fixed bracket kit
F450 Superduty
1999-10 2600 3
3
510-341
504-341
— 502-374 Replacement for single leaf OE helper
F550 Superduty
1999-10 2600 3
3
510-341A
504-341
— 502-375 Replacement for single leaf OE helper
1 Ton Rear
2-Wheel Drive 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.
E350 cutaway and
motorhome chassis
1992-93 2300 6
3
510-1045
— — — Tapered extra leaf kit, use w/43-1045, 3
leaf rear taper springs.
E350 cutaway and
motorhome chassis
1978-91 1650 6
3
510-659
— — — Tapered extra leaf kit, use w/43-659
taper leaf rear springs only.
E350 cutaway chassis 1992-93 1650 6
3
510-1043
— — — Tapered extra leaf kit, use w/43-1043, 4
leaf rear taper springs.
E-Super Duty
1996-00 1750 6
3
510-1167
— — — Tapered extra leaf kit.
F53 Motorhome Chassis 1996-00 — — — — — — — See section on Taper Extra Leaves in
this publication.