coolant heater inline

[Lee4212]

A long time ago we had a coolant heater on 2 of our cars that once it got warm enough it kept circulating the warm coolant through the system. Are they still ade? Would love one for my '05 impala ! I do NOT like or want freeze plugs.
Hope I posted this in the right location.

 

[Colt45ws]

Yup.
http://www.fuelinjection.net/zerostart/zerostart.html

 

[earlyre]

a Quick search on Amazon come up with These and These , I tried to filter out the freeze plug type, but they are persistent little buggers