GOOD ECU FROM A 2020 GTX 170 WITH ONLY 139 HOURS ON IT. COMES WITH 1 KEY PICTURED. THIS SEA DOO RAN GREAT! WE HOOKED IT UP TO BUDS AND IT HAS ZERO ACTIVE FAULT CODES, WE RESET THE SERVICE INTERVAL. ONLY PARTING THIS SEA DOO OUT DUE TO HULL DAMAGE. 666417 IS THE PART NUMBER ON THE ECU. THIS ECU WILL MOST LIKELY NEED TO BE MARRIED TO YOUR IBR AND GAUGE CLUSTER BY A SHOP OR DEALER THAT HAS BUDS, CANDOO, OR SIMILAR. THIS ECU MAY WORK FOR 130 AND 155 MODELS AS WELL. SOLD AS IS NO WARRANTY. PLEASE DO NOT BUY TO TEST AND SEE IF THIS IS THE ISSUE WITH YOUR SKI AND THEN TRY TO RETURN IT. MAKE SURE THIS IS THE CORRECT ECU AND THAT IT IS YOUR ISSUE BEFORE YOU BUY! ASK US QUESTIONS!FOR MORE QUALITY PARTS VISIT OUR EBAY STORE MSC Powersports Parts | eBay Stores