All 444C compressors feature a head assembly that includes a newly-developed, patents pending intercooler head. Additionally, they are equipped with a stainless steel braided leader hose with inline check valve assembly that serves to protect the compressor by eliminating the possibility of high amperage restarts.Note: Use thread sealant for proper installation. Teflon tape is not recommended. Properly sealed, recommended torque is 12 to 15 ft. lbs. 200 PSI / 3.53 CFM Included Parts:- (2) 444C Chrome Compressors w/ 1/4" NPT Leader Hoses and Check Valves- Intercooler Head (Patents Pending)- (2) Air Filter Assemblies- (2) Remote Mount Brackets- (2) Sets of Remote Mount Fittings- (2) Sets of Spare Air Filter Elements- (8) Sets of Nuts, Bolts, Washers and Lock Washers- (2) Stainless Steel Braided Leader Hoses with Inline Check Valve- (6) Airline Clips- (1) Viair Sealed Pressure Switch 165psi on - 200psi off (viair part# 90221)- (1) Viair 80amp Relay (viair part# 93980)