Now Available. When the SeaDoo 300 series PWC were first released the spark plugs were a dealer only item and very expensive. NGK has now released the KR9C-G to Hot Products for aftermarket dealer sales. The part number is KR9C-G and is sold in boxes of 4 spark plugs per box. These plugs fit: 2016-2017 RXP-X 300, 2016-2017 RXT-X 300 2016-2017 and GTX LIMITED 300. Photo courtesy: Hot Products USA
