Zone Offroad ZONF1413 4" Front Coil Spring Diesel 2005-2020 Ford F-250/F-350 4WD

Vehicle Fitment

• 2005-2020 Ford F-250 Super Duty (All Trims, 4WD, Diesel Engine)
• 2005-2020 Ford F-350 Super Duty (All Trims, 4WD, SRW & DRW, Diesel Engine)

Fitment Notes

• Diesel engine models only - gas engine-equipped F-250 and F-350 Super Duty trucks use a different front coil spring and are not compatible with this part
• 4WD models only - not compatible with 2WD F-250 or F-350 Super Duty
• Sold individually (one spring) - quantity of 2 required for a complete front coil spring replacement (both left and right sides)
• Designed as a component for Zone Offroad 4-inch lift kits - intended for use within a complete lift system that includes proper radius arm drop brackets, steering correction, and rear lift components
• FMVSS 126 (ESC System) compliant - maintains factory electronic stability control function

Features

• Full-length replacement front coil spring providing 4 inches of front lift height on 2005-2020 Ford F-250 and F-350 Super Duty diesel trucks
• Engineered specifically for the heavier front axle weight of diesel-powered Super Duty trucks - spring rate accounts for the added engine weight of diesel configurations
• Full-length replacement design delivers improved ride quality over coil spacer-based lift solutions by utilizing proper spring travel across the entire stroke
• Powder coated steel construction for corrosion resistance and long-term durability in on- and off-road environments
• FMVSS 126 (ESC System) compliant - preserves factory electronic stability control system performance
• Engineered and manufactured in the USA from high-quality American materials
• 3-Year / 36,000-mile worry-free warranty on hard parts, with limited lifetime warranty coverage thereafter

Specifications

• Front Lift Height: 4 Inches
• Type: Full-Length Replacement Front Coil Spring
• Engine Compatibility: Diesel Only
• Drivetrain: 4WD Only
• Position: Front
• Finish: Powder Coated Steel (Black)
• Sold As: Single (1 spring); 2 required for complete front installation
• UPC: 711745599215
• Warranty: 3 Years / 36,000 Miles (hard parts), Limited Lifetime thereafter

Included Components

• 1x Zone Offroad ZONF1413 4" Front Lift Coil Spring (Single, Diesel)

Product Description

The Zone Offroad ZONF1413 is a full-length 4-inch front lift coil spring engineered specifically for 2005-2020 Ford F-250 and F-350 Super Duty trucks equipped with diesel engines and 4WD. Unlike coil spacer kits that stack on top of the factory spring, this is a complete replacement coil spring - meaning the truck rides on the new spring through its full range of travel, delivering a more consistent lift height and improved ride quality across on-road and off-road conditions alike. The spring rate is calibrated for the heavier front axle load characteristic of diesel Super Duty trucks, which carry significantly more nose weight than their gas counterparts, making this spring a diesel-specific component that should not be substituted for the gas-engine equivalent.

Constructed from high-strength steel with a powder coat finish for corrosion resistance, the ZONF1413 is designed as an integral component of Zone Offroad's 4-inch lift kit systems for the 2005-2020 Ford F-250 and F-350 Super Duty. When used within a complete Zone Offroad lift system - which includes radius arm drop brackets to correct caster, steering geometry correction components, and rear lift hardware - these coil springs provide a coordinated 4-inch front lift that maintains factory-like suspension geometry and clearance for tires up to 35 inches. The FMVSS 126 ESC compliance ensures the factory electronic stability control system continues operating as designed after installation.

This spring is sold individually - a quantity of 2 is required for a complete front coil spring replacement, one for each side of the front axle. It is compatible with all 4WD diesel-powered 2005-2020 Ford F-250 and F-350 Super Duty trucks across all trim levels and both single and dual rear wheel configurations. Zone Offroad backs the ZONF1413 with a 3-Year / 36,000-mile worry-free warranty on hard parts, transitioning to a limited lifetime warranty for the original retail purchaser thereafter.