6 / 83
6
Heavy Duty Helper Springs
Heavy Duty Helper Springs
Chevrolet / GMC
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.
C3500HD
1991-03 1600 6 2
¹⁄₂
510-492
— — — H1, Tapered extra leaf kit
All w/ Coil springs
— — — — — — — See section on Super Duty Coils in this
publication.
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.
C30/3500, R30/3500
(“R” body only)
1973-91 2800 1 2
¹⁄₂
510-107
504-107 503-2101 502-258 H2, H11, H12
C30/3500, R30/3500
(“R” body only)
1973-91 4200 4 2
¹⁄₂
510-141
504-141 503-2113 502-320 H1, 6 leaf helper, high arch
C30/3500, R30/3500
(“R” body only)
1973-91 4200 4 2
¹⁄₂
510-139
504-139 503-2113 502-320 H1, 6 leaf helper, low arch
C30/3500, R30/3500
(“R” body only)
1973-91 2900 4 2
¹⁄₂
510-119
500-119 503-2113 502-298 OEM style fixed bracket kit
C3500 DRW
1988-00 2600 4 2
¹⁄₂
510-135
500-135 503-2118 502-258 H4, H5
C3500 SRW
1988-00 2400 1 2
¹⁄₂
510-129
504-129 503-2119 502-215 H2, H5, H15
Silverado/Sierra 3500
2001-10 2600 4 2
¹⁄₂
510-149A
500-135 503-2120 502-215 Frame must be factory drilled for OE
brackets.
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.
G3500 Savana and
Express
1996-07 2500 6 2
¹⁄₂
510-1175
— — — Extra leaf kit for 3 leaf taper springs only.
P30/3500 except
motorhome chassis w/
4-wheel disc
1973-99 3200 4 2
¹⁄₂
510-143
504-143 503-2115 502-320 OEM style fixed bracket kit
P30/3500 cutaway
motorhome only
1993-99 1980 6 —
510-937
— — — Tapered extra leaf kit, used with four leaf
taper rear springs only.
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.
K30/3500, V30/3500
(“V” body only)
1977-91 2900 4 2
¹⁄₂
510-119
500-119 503-2113 502-298 OEM style fixed bracket kit
K30/3500, V30/3500
(“V” body only)
1977-91 4200 4 2
¹⁄₂
510-141
504-141 503-2113 502-320 H1, 6 leaf helper, high arch
K30/3500, V30/3500
(“V” body only)
1977-91 4200 4 2
¹⁄₂
510-139
504-139 503-2113 502-320 H1, 6 leaf helper, low arch
K30/3500, V30/3500
1977-87 2800 1 2
¹⁄₂
510-107
504-107 503-2101 502-258 H11, H12
K3500 DRW
1988-00 2600 4 2
¹⁄₂
510-135
500-135 503-2118 502-258 H4, H5
K3500 SRW
1988-00 2400 1 2
¹⁄₂
510-129
504-129 503-2119 502-215 H2, H5, H15
Silverado/Sierra 3500
2001-10 2600 4 2
¹⁄₂
510-149A
500-135 503-2120 502-215 Frame must be factory drilled for OE
brackets.
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.
Chevrolet / GMC