OEM Part
Name: Spark Plug Wire
Moto Guzzi Part Number: Spark Plug Wire-GU01718330, Spark Plug Cap-GU01717430
Replacement Part
Brand or Source: NGK
Part Number: CR6
Virtually the same wire and plug, the NGK has outer sleeve covering plug wire to protect from the elements/heat. The sleeve is the same red color as plug wire and could be removed.
Other Comments: I removed the end connector from the original wire (end that plugs into the coil) and installed it on the new NGK wire since the NGK package does not provide one. It does come with the Spark Plug Cap already installed. They only come one to a pack, so naturally you would require two if you were to replace both stock wires.