What is the benefit of the heatsink design on this ignition coil?

The heatsink design helps dissipate heat away from the coil. This can improve the coil's longevity and ensure consistent performance, especially in demanding conditions or when replacing older, potentially overheating factory units.

Can I buy just one ignition coil, or do I need to buy a set?

You can purchase these ignition coils individually, or as a complete set of eight. This allows you to replace only the faulty coil or refresh your entire ignition system at once.

What other parts should I consider replacing when installing new ignition coils?

When replacing ignition coils, it's highly recommended to also replace your spark plugs. New spark plugs ensure optimal spark delivery and can help prevent premature failure of the new coils.

Mishimoto Ignition Coil MMIG-LSHS-99 for GM Trucks

Name: Mishimoto 99-07 GM Truck/Heatsink Style Ignition Coil
Brand: Mishimoto
Price: 62.41 USD
Availability: InStock

Mishimoto 99-07 GM Truck/Heatsink Style Ignition Coil

$62.41

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Mishimoto 99-07 GM Truck/Heatsink Style Ignition Coil. Restores smooth idle and engine performance.

Key Features

Fits 1999-2007 GM L-Series Truck Engines with heatsink style ignition coils.
Designed and tested to meet or exceed OEM GM performance specifications.
Available as a single coil or in a set of 8.
Improves engine startup, idle, and restores performance.
Includes Mishimoto Lifetime Warranty.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Will this fit your vehicle?

Product Details

With a heatsink design, these Mishimoto ignition coils are built to meet or exceed OEM GM performance standards for your 1999-2007 GM truck. Before you start adding horsepower, it's a smart move to make sure your ignition system is in top shape. A weak spark can lead to all sorts of problems, from rough idling and poor gas mileage to potential damage to your catalytic converter. These coils are a solid option for replacing worn-out or defective factory units, helping to bring your engine back to its intended performance level.

These coils are designed to ensure a strong spark, which is crucial for proper combustion. When paired with new spark plugs, you can expect a noticeable improvement in how your engine starts, a smoother idle, and a general restoration of lost performance. Mishimoto tests these coils to ensure they meet or exceed the original equipment specifications, giving you confidence in their reliability. You can buy them individually or as a set of eight, making it easy to tackle the whole engine at once.

This part fits a wide range of GM trucks and SUVs, including popular models like the Chevrolet Silverado, GMC Sierra, and Cadillac Escalade. It's a great way to ensure your LS engine is running efficiently before you move on to other modifications.