Some good iridium spark plugs include the Bosch brand of iridium spark plugs and the NGK IX brand. Both brands are readily available in auto part stores and online retailers.
The Bosch brand of iridium spark plugs provides a long life of the part and high performance. When compared to copper spark plugs, these offer up to four times the life span. These spark plugs come pre-gapped, which leads to faster installation.
The NGX IX brand of iridium spark plugs are designed with performance in mind and offer excellent throttle response. This spark plug offers a high melting point for protection against heat and electrical wear.