Hellwig · New
Hellwig 99-13 GMC 1500 Load Pro-Up To 3500lb Level LC 4 Leaf Stack Helper Spring w/o Mounting Kit
MPN 3515 · Store SKU hwg3515
Supplier stock checked 11/7/2026, 6:00:54 PM 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 GM 99-13 1500&88-00 2500/3500 SINGLE REAR WHEEL-MULTI LEAF APPLICATION ONLY-DOES NOT FIT DUAL REAR WHEEL. CHECK VEHICLE FITMENT. LP-35 Heavy Duty Load Leveling Helper Springs GM 99-13 1500/88-00 2500/3500 LP-35 Heavy Duty Load Leveling Helper Springs GM 99-13 1500&88-00 2500/3500 LP-35 Heavy Duty Load Leveling Helper Springs
Manufacturer fitment & guides
Check 3515 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y
