The Tuff Stuff 1421N is a mechanical, high-volume Supercool water pump for Ford FE-Series engines including the 390, 427 and 428. It is cast in iron and finished natural, providing increased coolant flow for FE big block applications.
- Type: mechanical water pump, Supercool
- Flow: high volume
- Material: cast iron
- Finish: natural
- Application: Ford FE-Series (390/427/428)
- Part number: 1421N
FAQ
Which engines does the 1421N fit?
It fits Ford FE-Series engines, including the 390, 427 and 428.
Is this a high-volume water pump?
Yes. It is a Supercool high-volume mechanical pump for improved coolant flow.
What is the pump made from?
The 1421N is cast iron with a natural finish.

