Upgrade your engine’s performance with Denso’s Iridium Long-Life spark plugs!

These aren’t your average plugs—they’re designed to last up to three times longer than conventional ones, thanks to a super-fine 0.7mm iridium center electrode that improves ignition and fuel efficiency.

The copper core helps with heat dissipation, while the five-rib insulator reduces electrical loss and prevents misfires.

Pre-fired at the factory to ensure reliability right out of the box, they’re a common OEM choice for brands like Toyota, Honda, GM, and Mitsubishi.

This 4-pack covers most 4-cylinder engines, but always double-check compatibility with your vehicle’s year, make, and model.

Easy to install with basic tools, they can smooth out idle, improve throttle response, and help with cold starts.

A small upgrade that makes a noticeable difference in how your car runs.

Treat your engine to premium performance.