RockJock Front Spring Tower Plugs

2018–2026 Jeep Wrangler & Gladiator 2.0L Turbo, 3.6L V6, 3.0L EcoDiesel, 6.4L 392

Part #: RJ-600003-101

Overview

The RockJock Front Spring Tower Plugs are precision-engineered components designed to protect the coil spring towers of Jeep Wrangler and Gladiator models from 2018 through 2026. These plugs cap the openings in the front spring towers, preventing water, mud, and debris from accumulating and causing corrosion or rot. Ideal for off-road enthusiasts and daily drivers alike, they maintain the structural integrity of your vehicle’s suspension frame while providing a clean, finished appearance.

Specifically crafted for Jeep models equipped with 2.0L Turbo, 3.6L V6, 3.0L EcoDiesel, and 6.4L 392 engines, these plugs offer a straightforward solution to a common problem faced in wet and muddy environments. By sealing the spring towers, they help extend the lifespan of your Jeep’s frame and suspension components.

Key Features

RockJock’s Front Spring Tower Plugs combine functionality with durability, making them a smart upgrade for Jeep owners who demand reliability and style.

• CNC machined from black Delrin for a durable, semi-gloss finish
• Set includes four plugs: upper and lower pieces that index and lock together
• Secure bolt with O-ring crush ensures a tight, leak-proof seal
• Prevents water, mud, and debris intrusion to protect coil spring towers from rust and rot
• Simple, bolt-in installation with no modifications required
• Compatible with Jeep Wrangler JL, JT, and JK models from 2018 to 2026
• Designed to maintain factory suspension geometry and appearance
• Enhances vehicle longevity in harsh weather and off-road conditions

Construction & Design

Manufactured from high-quality black Delrin, these plugs offer excellent resistance to impact, chemicals, and environmental wear. The CNC machining process ensures precise dimensions for a perfect fit within the spring tower openings. The upper and lower plugs are engineered to interlock securely, while the included bolt compresses an O-ring to create a reliable seal against moisture and debris intrusion. This thoughtful design not only protects the frame but also provides a clean, professional look that complements the rugged style of Jeep vehicles.

Installation & Fitment

Installation is straightforward and requires no special tools beyond standard hand tools. The plugs fit directly into the front coil spring towers of compatible Jeep Wrangler and Gladiator models. Once inserted, the upper and lower plugs align and lock together with the supplied bolt, which compresses the O-ring to ensure a tight seal. This bolt-in design allows for easy removal if future maintenance is needed. No drilling, cutting, or modifications to the vehicle are necessary, making this an ideal upgrade for both DIY enthusiasts and professional installers.

What's Included

• 4 x CNC machined black Delrin spring tower plugs (2 upper, 2 lower)
• 4 x bolts with O-rings for secure sealing and fastening
• Installation instructions

Ideal For

These front spring tower plugs are perfect for Jeep owners who frequently drive in wet, muddy, or off-road conditions where debris buildup can cause corrosion. They are also ideal for anyone looking to preserve the structural integrity of their Jeep’s suspension frame while maintaining a clean and factory-finished appearance. Whether you’re an off-road adventurer, weekend trail rider, or daily commuter, these plugs provide essential protection and peace of mind.

RockJock 4x4 by John Currie develops trail-proven suspension and steering components for Jeeps and modern off-road platforms, including complete lift systems and the well-known AntiRock sway bar setups. Built around durable, articulation-friendly designs, RockJock is a go-to for enthusiasts who want confident road manners and real capability when the terrain gets technical.