1W2864 7M0459 9M2745 Water Temperature Guage Fits CAT Fits Caterpillar Dozer LoaOne New Aftermarket Replacement Mechanical Water Temperature Gauge with Mounting Bracket for Several Fits Caterpillar Models. This gauge fits a 2" diameter hole But can be used on any application the following specs match It comes with the bracket and is pre attached to a 101" lead tube and sender. Sender ends mount to any 3 4" pipe plug or port and will require an internal clearance of about 1 1 2". This gauge will work on 12 or 24 volt systems, it