Mercury clutch judder can be caused by a leaking rear main seal.
Get a high-performance Mercury clutch for your Cougar.
Is your Cougar doing the shimmy whenever you engage your Mercury clutch? Sounds like there's oil on your Mercury clutch facing. The only fix is a new Mercury clutch kit, and we've got your Mercury clutch in stock and ready for immediate shipping. Pay less with a Mercury clutch from us!