This factory powerhead stud kit fits 1991-2005 Mercury V6 2-Stroke (2.0 and 2.5 Liter) 135, 175, 200, and 225 HP outboards with standard 20" and 25" bass/fishing mid-sections.
 
Includes eight (10) Mercury OEM Powerhead Studs, ten (10) case-hardened thick-washers to fit the nut seats cast in the mid, eight (8) stainless steel Nylok nuts, and two (2) stainless steel Nylok half/jam nuts for the front two studs.