GMC Sierra 3500 HD Leaf Helper Spring Replacement

2 in.; Incl. Center Pins; Pair

1 Leaf 500 Lb. Average Capacity 9/16 In. Leaf Thickness Full Taper

2 Leaf Full Taper Spring 525 Lb. Average Capacity 7/8 In. Pack Thickness w/Single Rear Wheel (SRW)

1,500 Lb. Average Capacity 1.375 In. Pack Thickness 20.50 In. x 20.50 In. 4 Leaf Heavy Duty Aftermarket Design

Rear 4 X 2 May be used on trucks equipped with top overload spring

Rear 4 X 4 May be used on trucks equipped with top overload spring

With factory contact overload leaf springs.

Rear 4 X 2 For pickup models only. Do not use on trucks with top overload springs. Do not use on chassis cab models. MXKT (sold separately)

2500 lbs. Capacity; Do Not Use w/Factory Overload Contact Springs; Requires Mounting Kit PN[25318]; Single Rear Wheel

Rear 4 X 4 For pickup models only. Do not use on trucks with top overload springs. Do not use on chassis cab models.

Up to 2500 lbs. load assist; 3 Leaf Stack; Do Not Use w/Factory Overload Contact Springs; Requires PN[25312]; 2 and 4 wheel drive

Rear 4 X 2 Do not use on trucks equipped with a top overload spring MXKT (sold separately)

Rear 4 X 4 May be used on trucks equipped with top overload spring

Rear 4 X 2 May be used on trucks equipped with top overload spring

Rear 4 X 2 For cutaway models only Do not use on van models

2500 lbs. Capacity; 3 Leaf Stack; Use w/43 in. Or Longer Base Leaf; Requires Mounting Kit PN[25250 Or 25300]; Do Not Use w/ Factory Overload Contact Springs

Up to 3500 lbs. load assist; 4 Leaf Stack; Requires Mounting Kit PN[25312]; 2 and 4 wheel drive

3500 lbs. Capacity; Do Not Use w/Factory Overload Contact Springs; Requires Mounting Kit PN[25318]; Single Rear Wheel

3500 lbs. Capacity; 4 Leaf Stack; Mounting Hardware Required; Do Not Use w/ Factory Overload Contact Springs~ 2.5 in. Wide Leaf Require PN[25250]; 3 in. Wide Require PN[25300]

Rear 4 X 2 For pickup models only Do not use on chassis cab models, trucks equipped with a top overload spring, or dual rear wheel truck MXKT (sold separately)

Rear 4 X 2 MXKT (sold separately)

Rear 4 X 4 May be used on trucks equipped with top overload spring

Rear 4 X 2 May be used on trucks equipped with top overload spring PSP-19 (included)

Rear 4 X 2 For pickup models only Do not use on chassis cab models or trucks equipped with a top overload spring MXKT (sold separately)

Rear 4 X 2 For pickup models only. Do not use on trucks with top overload springs. Do not use on chassis cab models. MXKT (sold separately)

Rear; Self-Adjusting Suspension Stabilizing System; Provides 4000 lbs Additional Load Leveling Ability; Do Not Exceed GVWR; Incl. Poly Spring Pad Leaf Spring Dimensions 51L x 3W x 1.12~Poly Spring Pad PN[PSP-19] Included~With Factory Top Overload