Ir Fusion, the newest member of the Bosch premium spark plug family, combines an iridium and platinum center electrode with Bosch's exclusive surface air gap technology and yttrium-enhanced ground ele...
Ir Fusion, the newest member of the Bosch premium spark plug family, combines an iridium and platinum center electrode with Bosch’s exclusive surface air gap technology and yttrium-enhanced ground electrodes to deliver better than OE performance.
Robert Bosch Corp.
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