Check the listing for details. Euro White 4" Tachometer+Systemcheck 7000 RPM Gas for Johnson/Evinrude Outboard. Condition: Used, Made in United States. Listed at 50.00 USD. THIS GOES INTO A 3 3/8 HOLE TO INSTALL THE GUAGE. PLEASE MAKE SURE THIS IS THE CORRECT PART FOR YOUR APPLICATION WHICH IS ON JOHNSON EVINRUDE MOTORS FROM 1996 AND UP ONLY. THIS PLUGS INTO THE FACTORY WIRING HARNESS. WILL SHIP USPS MAIL. XXXX FYI IF THE TACHOMETER FAILS LATER DOWN THRU THE YEARS MOST PEOPLE DO NOT KNOW THIS YOU CAN SEND IT BACK TO FIARIA AND THEY CAN REMANUFACTURED IT AND RETURN IT TO YOU LIKE NEW FOR A VERY LOW COST .POSSIBLE LIFE TIME WARRANTY ALL YOU HAVE TO DO IS PAY FOR THE SHIPPING COST. MOST DEALERSHIPS WILL TELL YOU THIS BECAUSE THEY WOULD RATHER SELL YOU A NEW REPLACEMENTTHIS GOES INTO A 3 3/8 HOLE TO INSTALL THE GUAGE. PLEASE MAKE SURE THIS IS THE CORRECT PART FOR YOUR APPLICATION WHICH IS ON JOHNSON EVINRUDE MOTORS FROM 1996 AND UP ONLY. THIS PLUGS INTO THE FACTORY WIRING HARNESS. WILL SHIP USPS MAIL. XXXX FYI IF THE TACHOMETER FAILS LATER DOWN THRU THE YEARS MOST PEOPLE DO NOT KNOW THIS YOU CAN SEND IT BACK TO FIARIA AND THEY CAN REMANUFACTURED IT AND RETURN IT TO YOU LIKE NEW FOR A VERY LOW COST .POSSIBLE LIFE TIME WARRANTY ALL YOU HAVE TO DO IS PAY FOR THE SHIPPING COST. MOST DEALERSHIPS WILL TELL YOU THIS BECAUSE THEY WOULD RATHER SELL YOU A NEW REPLACEMENT