Hellwig 01-07 Ford F-350 SD Load Pro- To 3500lb Level LC 4 Leaf Stack Helper Spring w/o Mounting Kit | HWG3520

Vendor: Hellwig
Part Number: 3520
Save $158.28
Sale Price $455.22 Regular Price $613.50

Currently out of stock.

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Email sales@berryperformancesales.com with your year, make, model and engine, and we'll help you check fitment before you order.
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This Hellwig Load Pro helper spring adds up to 3500lbs of level load capacity to the 01-07 Ford F-350 SD, helping the truck sit level and stay stable under heavy loads and while towing. It bolts onto the factory leaf springs and is tunable through the U-bolts, so support can be adjusted as tow and haul needs change. This spring is sold without a mounting kit.

  • Load capacity: up to 3500lbs level load capacity
  • Series: Hellwig Load Pro
  • Install: bolts onto the factory leaf springs, tunable via U-bolts
  • Note: sold without a mounting kit
  • Warranty: Hellwig limited lifetime warranty
  • Part number: HWG3520

Installation Instructions (PDF)

Vehicle Applications

This part fits a wide range of vehicles. See the full fitment list below.

Year Make Model Submodel
1994-1996 Dodge Ram 1500 Base
1997-2000 Dodge Ram 1500 Laramie
1997 Dodge Ram 1500 LT
1997-2000 Dodge Ram 1500 Sport
1997-1998 Dodge Ram 1500 SS/T 5.9L
1997-2000 Dodge Ram 1500 ST
1997-2000 Dodge Ram 1500 WS
1994-2002 Dodge Ram 2500 Base
1994-2002 Dodge Ram 3500 Base
1977-1978,1983-1986,1997,1999 Ford F-250 Base
1977-1982,1987-1992 Ford F-250 Custom
1995-1996 Ford F-250 Eddie Bauer
1997,1999 Ford F-250 Lariat
1977-1978 Ford F-250 Northland
1977-1981 Ford F-250 Ranger
1978-1981 Ford F-250 Ranger Lariat
1977-1981 Ford F-250 Ranger XLT
1995-1996 Ford F-250 Special
1982-1997,1999 Ford F-250 XL
1982-1983 Ford F-250 XLS
1977,1983-1984,1993-1997,1999 Ford F-250 XLT
1982,1985-1992 Ford F-250 XLT Lariat
1997 Ford F-250 HD XL
1997 Ford F-250 HD XLT
2004-2007 Ford F-250 Super Duty Harley-Davidson Edition
2004-2007 Ford F-250 Super Duty King Ranch
1999-2007 Ford F-250 Super Duty Lariat
1999-2007 Ford F-250 Super Duty XL
1999-2007 Ford F-250 Super Duty XLT
1983-1986,1997 Ford F-350 Base
1980-1982,1987-1992 Ford F-350 Custom
1995 Ford F-350 Eddie Bauer
1980-1981 Ford F-350 Ranger
1980-1981 Ford F-350 Ranger Lariat
1980-1981 Ford F-350 Ranger XLT
1995-1996 Ford F-350 Special
1982-1997 Ford F-350 XL
1982-1983 Ford F-350 XLS
1983-1984,1993-1997 Ford F-350 XLT
1982,1985-1992 Ford F-350 XLT Lariat
2004-2007 Ford F-350 Super Duty Harley-Davidson Edition
2003-2007 Ford F-350 Super Duty King Ranch
1999-2007 Ford F-350 Super Duty Lariat
1999-2007 Ford F-350 Super Duty XL
1999-2007 Ford F-350 Super Duty XLT

FAQ

How much load capacity does this add?

Up to 3500lbs of level load capacity.

What does a helper spring do?

It helps the truck sit level and stay stable under heavy loads and while towing, reducing sag.

Is it a bolt-on?

Yes. It bolts onto the factory leaf springs and is tunable through the U-bolts to match your load.

Does it include a mounting kit?

No. This spring is sold without a mounting kit.

Is it warrantied?

Yes. It is backed by Hellwig's limited lifetime warranty.

Shipping Policy
  • Free shipping on orders over $99 (excludes freight shipments).
  • In-stock orders typically ship within 1 to 2 business days. Weekend and holiday orders are processed the next business day.
  • Orders ship from Defiance, Ohio and a nationwide network of warehouses and manufacturers.
  • Items showing an ETA are not in stock yet. ETAs come from the manufacturer and can change.
  • No P.O. Boxes. International orders need a shipping quote, so email us first.

Read the full Shipping Policy

Return Policy
  • 30-day return window from the ship date. Returns must be approved first; email sales@berryperformancesales.com with your order number.
  • Items must be unused, complete and in the original packaging.
  • A 20% restocking fee applies, and return shipping is paid by the buyer.
  • Not returnable: installed or modified parts, opened or used programmers and tuners, custom orders, Open Box, and Clearance or Final Sale items.
  • Damaged, defective or incorrect items must be reported within 48 hours of delivery with photos.

Read the full Return Policy

Disclaimer

All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

For any questions or concerns, please contact us — we’re always happy to help.

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