IRONTREE Front Upper Control Arms for Ford F-150 & Expedition — Pair (Left K80306 / Right K80308) with Pre-Greased Ball Joints

IRONTREE front upper control arms K80306 (left) and K80308 (right) are pre-assembled replacement assemblies that restore steering geometry and suspension articulation on compatible Ford and Lincoln trucks and SUVs.

These two-piece control arm set arrives with greased ball joints already installed, providing a ready-to-fit swap for worn or damaged front upper arms. Manufactured to meet original-equipment dimensions, the assemblies include corrosion-resistant finishes and are function-tested to ensure reliable performance across model years listed below. The package contains one driver-side (left) control arm K80306 and one passenger-side (right) control arm K80308, designed for a direct replacement without the need to transfer parts from the old arm.

How will these control arms affect steering and ride feel?

Replacing degraded control arms and ball joints helps recover factory steering geometry, reducing play and improving handling precision. With properly functioning ball joints, the front wheels track more predictably which can improve tire wear patterns and overall driver confidence.

• Pre-assembled ball joints for correct pivot alignment
• OE-form fit reduces need for aftermarket modifications
• Greased joints lower initial break-in stiffness and noise
• Corrosion-resistant coating protects moving parts

What vehicles and years do these parts fit?

This control arm pair is made to fit a range of Ford and Lincoln full-size trucks and SUVs when factory suspension configurations match. Always verify part numbers and vehicle build details before ordering to ensure compatibility.

• Ford F-150: 2004–2020 models
• Ford Expedition: 2007–2021 models
• Lincoln Navigator: 2007–2022 models
• Lincoln Mark LT: 2006–2008 models

What features improve durability and installation ease?

These control arms use a corrosion-resistant finish and are assembled with greased ball joints to reduce first-use wear and make installation simpler. They meet form, fit and function expectations so you can replace the worn unit without modifying mounting points.

• 100% function-tested assemblies for quality assurance
• Lightweight construction that keeps handling characteristics
• Pre-greased ball joints to minimize immediate maintenance
• Direct-replacement design aims for bolt-on installation

What warranty and value does IRONTREE provide?

IRONTREE positions these control arms as an economical alternative to dealer-priced parts while providing a limited manufacturer warranty. The company backs the assemblies for coverage against defects within the stated warranty period—review the warranty terms and confirm fitment for your vehicle prior to purchase.

• Factory-direct pricing to reduce middleman markup
• 2-year limited warranty on manufacturing defects
• Strict quality control and OE-spec manufacturing
• Included pair covers both left and right front upper positions

Who is this for? This IRONTREE K80306/K80308 pair is intended for owners, fleet technicians, and independent mechanics working on Ford F-150s, Ford Expeditions, Lincoln Navigators, or Lincoln Mark LTs within the listed year ranges who need a ready-to-install, tested replacement for worn upper control arms and ball joints. If your vehicle shows steering play, uneven tire wear, clunking over bumps, or you are restoring factory handling, this pre-assembled left and right control arm set gives a practical, cost-effective repair option. Be sure to confirm your vehicle's suspension configuration and OEM part numbers before ordering to guarantee a correct match.