These thermostat housings will fix your leak with a gasket seal design.  They feature a beautiful chrome finish and are designed as a universal application for most Chevy and Mopar engines with stock intake manifolds.  This design works with a Mopar thermostat only.  Late model Mopar style thermostats suggested.

• Neck goes straight up, must use Mopar thermostat

• Beautifully chrome plated

• Uses gasket for a perfect seal

• Center-to-center of mount bolts:  3-1/4"

• Neck/hose size:  1-1/2"

• Hardware included

Water neck fits:

• Chevy Small Block V8

• Chevy 90 Degree V6

• Late Mopar V8