Extra-heavy-duty fan clutch has a water pump flange bolt spacing of 2-1/8". The fan attachment bolt spacing is 3-1/4" from center to center. Mounting studs NOT included.

• Fan Bolt Circle "IN" :3.25
• Fan Mount Dia. "IN": 2.62
• Fan Mount Height "IN": 1.63
• Mount Dia. "IN" :2.58
• Bolt Thread: 5/16-18 Hole
• Overall Dia. "IN": 6.45
• Pilot Depth "IN": 0.63
• Pilot Dia. "IN": 0.63
• Fan Clutch Overall Height "IN": 3.66