This is a New MC-96 Motor Control Board for select Proform Trailrunner and NordicTrack Teton and Adventurer Treadmills. Part Number 165846 Model Numbers PFHK99900 PFHK99902 NTHK99900 NTHK99901 NTHK99902 Check Model Number in Detail Description. Maintenance Tip: #1 Reason for Motor Control Board Failure is a lack of Walking Belt Lubrication. Tryout our World Famous Treadmill Lube. There are no comparisons!