AMC 304 -401 Mechanical Water Pump

Built for reliability and clean OEM-plus looks, this AMC 304–401 Mechanical Water Pump delivers dependable cooling for classic AMC V8 applications. Designed for clockwise rotation and standard flow, it’s a straightforward, no-nonsense solution that does exactly what it should—move coolant efficiently and keep temperatures in check.

Crafted from lightweight aluminum with a cast finish, this long-style pump features a .625" pilot and a 1.81" inlet diameter for proper fitment and consistent performance. The 4.812" hub height ensures correct pulley alignment, helping prevent belt issues and premature wear. In short: it fits right, works right, and looks right.

Key Features:

• Fits AMC V8 engines: 304, 360, 390, 401
• Mechanical water pump with clockwise rotation
• Standard flow design for street and performance use
• Aluminum construction with durable cast finish
• Long-style configuration
• .625" pilot
• 1.81" inlet diameter
• 4.812" hub height for proper pulley alignment

**Included with March Performance All Inclusive 401 Serpentine Systems!