Guzzi-bear

Re the sen-813 SENSOR I had this leak, new O ring it IS a specific size and cheap enough from Guzzi Dealer BUT the sensor IS very expensive from Guzzi I found a car parts dealer with the replacement part for £25.95 as opposed to the £130+ Guzzi wanted the same part fits a whole load of Guzzis as well as MV Brutale and some Ducati bikes I have posted all the details on the site www.guzziriders.org hope this helps

This I have recently got sorted 1) O ring is a weird size but cheap enough so get the OEM part AND use silicone as well to help with the seal 2) The spacers are often 2 off the sensors are all the same so the spacers are ok IF you need new ones get them the same size 3) The Magnetti Marelli sensor SEN-813 is astronomical price from Guzzi (over£130 in the UK) there are replacement car ones the SAME part I found an e-bay seller £25.95 it fitted perfectly Info on the www.guzziriders.org website