Hellwig · New
Hellwig 01-07 Ford F-350 SD Load Pro- To 3500lb Level LC 4 Leaf Stack Helper Spring w/o Mounting Kit
MPN 3520 · Store SKU hwg3520
Supplier stock checked 11/7/2026, 6:42:03 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
The Hellwig LP-35 Helper Spring set the standard for all other aftermarket helper springs. Featuring a Fulltime Spring Rate design it is the workhorse of the Hellwig Spring line. This is ideal for fleet applications or vehicles that consistently carry a heavy load day in and day out. ATTENTION: MUST PURCHASE LP MOUNTING KIT FOR INSTALLATION. IF EQUIPPED WITH FACTORY CONTACT OVERLOAD SPRINGS, CHECK VEHICLE FITMENT ABOVE FOR SPECIFIC INFORMATION ON YOUR YEAR AND MODEL VEHICLE. The Hellwig LP-35 Helper Spring set the standard for all other aftermarket helper springs. Featuring a Fulltime Spring Rate design it is the workhorse of the Hellwig Spring line. This is ideal for fleet applications or vehicles that consistently carry a heavy load day in and day out. LP-35 Heavy Duty Load Leveling Helper Springs Late Model Dodge, Ford SINGLE REAR WHEEL-MULTI LEAF APPLICATION ONLY-DOES NOT FIT DUAL REAR WHEEL. CHECK VEHICLE FITMENT. LP-35 Heavy Duty Load Leveling Helper Springs Late Model Dodge; Ford LP-35 Heavy Duty Load Leveling Helper Springs Late Model Dodge, Ford LP-35 Heavy Duty Load Leveling Helper Springs
Manufacturer fitment & guides
Check 3520 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y
