Ripp High Performance Coil Pack Kit

1999–2004 Jeep Grand Cherokee 4.0L I6

02XJMJ-RPSP

Overview:

The Ripp High Performance Coil Pack Kit is a complete ignition upgrade designed specifically for Jeep Grand Cherokee models from 1999 to 2004 equipped with the 4.0L inline 6-cylinder engine. This full coil pack conversion kit replaces the factory coil rail with a robust 6-post coil body, delivering significantly enhanced ignition power and efficiency. Ideal for Jeep enthusiasts seeking improved throttle response, increased horsepower, and better fuel economy, this plug-and-play system offers a straightforward bolt-on installation with no tuning required.

By upgrading to the Ripp coil pack and pairing it with high-quality spark plug wires and NGK spark plugs, you ensure your engine receives a stronger, more consistent spark for optimal combustion. This results in smoother engine operation and a noticeable performance boost.

Key Features:

The Ripp High Performance Coil Pack Kit combines advanced ignition technology and durable components to maximize your Jeep’s performance. Key features include:

• 31% more ignition power output compared to the factory coil pack rail
• Direct bolt-on replacement with a plug-and-play design—no modifications or tuning needed
• Heavy-duty primary core winding and high-quality iron core with stronger laminations for sustained power delivery
• High-density, heat-resistant MOPAR orange polymer housing and silicone boots for superior durability
• Spiral wound, heavy-duty steel core spark plug wires with minimal resistance for maximum voltage transfer
• NGK spark plugs featuring trivalent metal plating for enhanced corrosion resistance and ignitability
• Improved throttle response, fuel economy, and combustion efficiency
• Engineered to resist shock, vibration, humidity, chemicals, and thermal cycling
• Compatible with both naturally aspirated and supercharged 4.0L engines

Construction & Design:

The coil pack features a robust internal design with a heavy-duty iron core and increased secondary windings to ensure consistent spark energy delivery even at high RPMs. The coil housing is constructed from a high-density polymer in Mopar orange, providing excellent heat resistance and protection against environmental factors such as gasoline, oils, brake fluids, and vibration. The epoxy-filled coil body ensures perfect insulation and durability under extreme conditions.

The included spark plug wires utilize a spiral wound steel core conductor, which significantly reduces electrical resistance compared to OEM graphite fiber wires. This design maximizes voltage transfer from the coil pack to the spark plugs, enhancing combustion quality. Silicone boots and coatings provide superior heat resistance and longevity.

NGK spark plugs included in the kit are engineered for improved ignitability and durability, featuring trivalent metal plating that prevents corrosion and seizing for reliable performance over time.

Performance & Sound

Upgrading to the Ripp High Performance Coil Pack Kit can yield an average net gain of 8 to 10 horsepower at the wheels by delivering a more complete and powerful spark. This results in a more efficient burn inside the combustion chamber, improving throttle response and fuel economy without requiring any engine tuning. The enhanced ignition system also contributes to smoother engine operation and reduced misfires, which can positively affect overall engine sound by promoting consistent combustion.

Installation & Fitment:

This kit is designed as a direct replacement for the factory ignition coil rail on 1999–2004 Jeep Grand Cherokee 4.0L engines. Installation is straightforward and typically takes about 1.5 hours. The kit includes a coil pack mounting bracket and a converter harness to facilitate the swap. Simply remove the stock coil rail and plug in the Ripp coil pack and spark plug wires. No additional tuning or modifications are necessary.

Important: Use the firing order directions provided on the box and disregard the numbered posts on the coil pack. The correct firing order for the 4.0L engine is 1-5-3-6-2-4.

What's Included:

• 1 x Ripp High Performance Coil Pack (3.8L unit adapted for 4.0L application)
• 1 x Ripp Coil Pack Mounting Bracket
• 1 x Ripp Converter Harness
• 1 x Ripp High Performance Spark Plug Wire Set
• NGK Performance Spark Plugs

Ideal For:

This coil pack kit is perfect for Jeep Grand Cherokee owners looking to upgrade their ignition system for enhanced performance and reliability. Whether you drive your Jeep daily, enjoy off-road adventures, or are preparing your vehicle for mild performance modifications, this kit provides a reliable and effective ignition solution. It is especially beneficial for those experiencing ignition-related issues or seeking improved throttle response and fuel efficiency without complex tuning.

RIPP Modifications (RIPP) builds performance upgrades with a strong focus on supercharger systems and supporting components for popular street and truck platforms. With decades in the enthusiast space and vehicle-specific kit coverage, RIPP is a solid choice for drivers chasing big, usable power gains while keeping a complete, engineered package for tuning and daily reliability.