Vintage Phillips Zer-O-Matic Propane Engine Pre-Heater - 5,000 BTU - Original Box and Hardware. New, never installed, not used. Vintage Phillips Zer-O-Matic engine pre-heater designed to help with cold-weather engine starting. The heater is labeled as a propane gas-fired engine pre-heater with a 5,000 BTU-per-hour rating. Includes green propane-fired engine pre-heater assembly, original Zer-O-Matic / Phillips box, assorted original-looking metal mounting brackets and hardware, and additional components shown in the photos. Condition: New, never installed, not used. Original box shows wear and has tape on it. The unit has not been tested, and completeness has not been verified. Please review all photos to see exactly what is included. A neat vintage piece of automotive and engine equipment, suitable for collectors, restorers, or someone familiar with older engine-heating systems. This unit is new in an opened box, never installed, not used, untested, sold as-is. Propane - for qualified installer / collector use; buyer to verify fittings and completeness from photos. Local pickup in Pound, WI only.