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2019 GMC Sierra 3500 HD Leaf Helper Spring

Review Fitment Notes to Ensure Proper Fit
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SuperSprings Leaf Helper Spring
SuperSprings logo
SuperSprings Leaf Helper Spring
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SuperSprings Leaf Helper Spring
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SuperSprings Leaf Helper Spring
Click to Enlarge
SuperSprings Leaf Helper Spring
Click to Enlarge
SuperSprings Leaf Helper Spring
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SuperSprings Leaf Helper Spring
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SuperSprings Leaf Helper Spring
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SuperSprings Leaf Helper Spring
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(Read reviews)
Our List Price: $399.99
with FREE Shipping
(32) In Stock
Part Number: 146474-03300754
Notes: SuperSprings -- Rear; Self-Adjusting Suspension Stabilizing System; Provides 1650 lbs Additional Load Leveling Ability; Do Not Exceed GVWR; Incl. Poly Spring Pad; Cutaway Models Only~Requires Mounting Kit PN [MXKT]
Features:
  • Requires no maintenance; Proudly made in the U.S.A.
  • Adjustable Shackles Allow Installation To Suit Various Needs
  • Works In Conjunction w/Original Equipment Leaf Spring Assembly
  • Never Load Any Vehicle Beyond The Manufacturers GVWR
  • Sold as a pair left and right
  • Reduces Body Roll Up To 30 Pct Without Compromising Ride Quality
  • Shot Peened To Relieve Spring Stress And Extend Product Life
  • Provides 1650 Pounds Additional Load Leveling Ability
  • SAE 5160H 51 Pct Alloy/60 Pct Carbon High Grade Steel
  • Self Adjusting Suspension Stabilizing System
  • Typical Installation Completed In Approximately One Hour
Condition: New

Shipping Options:
Free Ground Shipping

Installation Instructions:
  • Installation Instructions PDF - [1]
  • This Part Fits: Catalog: F
    Vehicle
    2019 GMC Sierra 3500 HD

    SuperSprings Leaf Helper Spring
    SuperSprings logo
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    (Read reviews)
    Our List Price: $459.99
    with FREE Shipping
    (18) In Stock
    Part Number: 146474-03300767
    Notes: SuperSprings -- Rear; Self-Adjusting Suspension Stabilizing System; Provides 2000 lbs Additional Load Leveling Ability; Do Not Exceed GVWR; Incl. Poly Spring Pad; For Use With Dual Rear Wheel Chassis Cabs~May Be Used On Models Equipped With Top Overload Spring~Poly Spring Pad PN [PSP-19] Included
    Features:
    • Adjustable Shackles Allow Installation To Suit Various Needs
    • Self Adjusting Suspension Stabilizing System
    • Shot Peened To Relieve Spring Stress And Extend Product Life
    • Works In Conjunction w/Original Equipment Leaf Spring Assembly
    • SAE 5160H 51 Pct Alloy/60 Pct Carbon High Grade Steel
    • Reduces Body Roll Up To 30 Pct Without Compromising Ride Quality
    • Requires no maintenance; Proudly made in the U.S.A.
    • Typical Installation Completed In Approximately One Hour
    • Never Load Any Vehicle Beyond The Manufacturers GVWR
    • Sold as a pair left and right
    • Provides 2000 Pounds Additional Load Leveling Ability
    Condition: New

    Shipping Options:
    Free Ground Shipping

    Installation Instructions:
  • Installation Instructions PDF - [1]
  • This Part Fits: Catalog: F
    Vehicle
    2019 GMC Sierra 3500 HD

    SuperSprings Leaf Helper Spring
    SuperSprings logo
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    (Read reviews)
    Our List Price: $287.99
    with FREE Shipping
    (2) In Stock
    Part Number: 146474-07400870
    Notes: SuperSprings -- Rear; Self-Adjusting Suspension Stabilizing System; Provides 2000 lbs Additional Load Leveling Ability; Do Not Exceed GVWR; Incl. Poly Spring Pad; Leaf Spring Dimensions 51L x 3W x 1.12~May Be Used On Models Equipped With Top Overload Spring
    Features:
    • Reduces Body Roll Up To 30 Pct Without Compromising Ride Quality
    • Self Adjusting Suspension Stabilizing System
    • Proudly Made In The U.S.A.
    • Never Load Any Vehicle Beyond The Manufacturers GVWR
    • SAE 5160H 51 Pct Alloy/60 Pct Carbon High Grade Steel
    • Works In Conjunction With Original Equipment Spring Pack
    • Provides 3300 Pounds Of Load Leveling Ability
    • Requires No Maintenance
    • Shot Peened To Relieve Spring Stress And Extend Product Life
    • Typical Installation Completed In Approximately One Hour
    • Adjustable Shackles Allow Installation To Suit Various Needs
    Condition: New

    Shipping Options:
    Free Ground Shipping
    This Part Fits: Catalog: T
    Vehicle
    2019 GMC Sierra 3500 HD

    SuperSprings Leaf Helper Spring
    SuperSprings logo
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    (Read reviews)
    Our List Price: $499.99
    with FREE Shipping
    (6) In Stock
    Part Number: 146474-03079881
    Notes: SuperSprings -- Rear; Self-Adjusting Suspension Stabilizing System; Provides 3000 lbs Additional Load Leveling Ability; Do Not Exceed GVWR; Incl. Poly Spring Pad; Requires Mounting Kit PN [MXKT] ~Without Factory Top Overload Spring
    Features:
    • Sold as a pair left and right
    • Provides 3000 Pounds Additional Load Leveling Ability
    • Typical Installation Completed In Approximately One Hour
    • Adjustable Shackles Allow Installation To Suit Various Needs
    • Never Load Any Vehicle Beyond The Manufacturers GVWR
    • Self Adjusting Suspension Stabilizing System
    • Works In Conjunction w/Original Equipment Leaf Spring Assembly
    • Shot Peened To Relieve Spring Stress And Extend Product Life
    • Requires no maintenance; Proudly made in the U.S.A.
    • Reduces Body Roll Up To 30 Pct Without Compromising Ride Quality
    • SAE 5160H 51 Pct Alloy/60 Pct Carbon High Grade Steel
    Condition: New

    Shipping Options:
    Free Ground Shipping

    Installation Instructions:
  • Installation Instructions PDF - [1]
  • This Part Fits: Catalog: F
    Vehicle
    2019 GMC Sierra 3500 HD

    SuperSprings Leaf Helper Spring
    SuperSprings logo
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    SuperSprings Leaf Helper Spring
    Click to Enlarge
    (Read reviews)
    Our List Price: $574.99
    with FREE Shipping
    (6) In Stock
    Part Number: 146474-03147749
    Notes: SuperSprings -- Rear; Self-Adjusting Suspension Stabilizing System; Provides 4000 lbs Additional Load Leveling Ability; Do Not Exceed GVWR; Incl. Poly Spring Pad; Cab And Chassis Models Only~Leaf Spring Dimensions 51L x 3W x 1.12~Poly Spring Pad PN [PSP-19] Included~With Factory Top Overload
    Features:
    • SAE 5160H 51 Pct Alloy/60 Pct Carbon High Grade Steel
    • Provides 4000 Pounds Additional Load Leveling Ability
    • Typical Installation Completed In Approximately One Hour
    • Sold as a pair left and right
    • Self Adjusting Suspension Stabilizing System
    • Adjustable Shackles Allow Installation To Suit Various Needs
    • Requires no maintenance; Proudly made in the U.S.A.
    • Never Load Any Vehicle Beyond The Manufacturers GVWR
    • Works In Conjunction w/Original Equipment Leaf Spring Assembly
    • Shot Peened To Relieve Spring Stress And Extend Product Life
    • Reduces Body Roll Up To 30 Pct Without Compromising Ride Quality
    Condition: New

    Shipping Options:
    Free Ground Shipping

    Installation Instructions:
  • Installation Instructions PDF - [1]
  • This Part Fits: Catalog: F
    Vehicle
    2019 GMC Sierra 3500 HD