Ignition Coil and Iridium Spark Plugs for Mitsubishi Montero (1997-2002) 3.5L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 1997-2002 Mitsubishi Montero

What it Does: The Ignition Coil and Iridium Spark Plug Kit replaces worn secondary ignition components on the 1997-2002 Mitsubishi Montero to eliminate misfires, stabilize idle, and restore peak combustion efficiency.

The Stock Mitsubishi Montero Ignition Breakdown

The 6G74 3.5L V6 utilizes a wasted-spark ignition system where three dual-tower coil packs drive six cylinders. Over sustained thermal cycling in the compact engine bay of the V45W and V75W chassis, the factory coil casing epoxy degrades. This leads to internal primary-to-secondary winding shorts and external dielectric breakdown. Simultaneously, high electrical demand erodes conventional plug electrodes, widening plug gaps and requiring higher secondary voltage that overheats the factory coils. The result is unburned fuel, hesitation under load, carbon fouling, and recurring P0300-P0306 diagnostic trouble codes.

The Engineering Solution

This direct-replacement kit pairs three dual-tower ignition coils with six fine-wire iridium spark plugs engineered to exceed OE endurance thresholds. The replacement coils feature high-temperature vacuum-potted epoxy insulation and low-resistance copper core windings to withstand thermal saturation and prevent high-voltage arcing. The matched iridium plugs feature laser-welded 0.6mm fine-wire center electrodes, drastically reducing required firing voltage while providing superior anti-fouling capabilities and corrosion resistance against combustion chamber thermal shock.

Technical Specifications

Compatibility

• 1997-2000 Mitsubishi Montero LS, SR (3.5L V6 6G74 SOHC, Chassis V45W)
• 2001-2002 Mitsubishi Montero XLS, Limited (3.5L V6 6G74 SOHC, Chassis V75W)

Frequently Asked Questions

Does this fit the V45W and V75W Montero?
Yes, this is a direct fit for the 1997-2002 Mitsubishi Montero equipped with the 6G74 engine.

Do these iridium spark plugs require gapping prior to installation?
No, the iridium spark plugs are factory pre-gapped, and manual adjustment is not advised as it can fracture the brittle fine-wire electrode.

The Mitsubishi Durability Standard

Built to handle the extended low-speed crawling and heavy towing demands of genuine four-wheel-drive platforms, this ignition system ensures consistent, high-load arc stability across rough terrain and harsh ambient conditions.