New OE: Zerostart/Temro 3100016. 400W 115v Frost Plug Engine Heater.

GM OEM Brass Colored 3 Pin Engine Block Heater 12560179

Chevrolet GM OEM Engine Block Heater

Kats 11425 Freeze Plug Engine Block Heater 34mm 400w 120v Chevy Pontiac 3.1 3.4

1" NPT 400W Block Heater Immersion for Engine Heater Zerostart/Temro 3100003

2014-2015 Dodge Ram 1500 3.0L Eco Diesel Engine Block Heater 12560179

Engine Block Heater Pat-Pend LR-336-400W 115V L6 3457