The 15-2518 / 12351841 is New Old Stock (NOS) and is a trinary electrical A/C pressure cycling switch which mounts directly onto the air conditioning high side line. This switch features 4 electrical terminals inside its connector tower and performs three distinct mechanical safety and system control functions simultaneously including low pressure cut out, high pressure cut out and fan/shutter control engagement. It measures high side refrigerant pressure, cycling the A/C compressor clutch on and off toprtect the compressor for high/low pressure and cycles the cooling fan on with normal open contacts. Replace Red Dot switch.
This vintage/legacy component is obsolete and highly specialized to fit heavy duty commercial vehicles. The aftermarket cross-references for this exact part number suggest that this switch fits a broad array of heavy duty semi trucks, agricultural machinery and construction equipment between 1988 and 2006.
Can be used for aftermarket units such as vintage systems also. fits 1/4 flare port
**Adapter included, schrader valve not included.
There are many part numbers across various aftermarket suppliers provided below:
Four Seasons 35899
MEI/Truck Air 11-2625
Red Dot 71R7500
New Holland 620205
Western Star OEM 02-2750417
Volvo OEM 61522-3801
Navistar / International 1691699C91
The following is a comprised (not complete) list of vehicles that utilize this switch:
Medium Duty Commercial Trucks
1989 - 2002 Navistar / International 4000 Series
Heavy Duty Commercial Semi Trucks
1994 - 2003 Mack CH / CL Series
1995 - 2005 Mack DM / RB / RD Series (Vocational)
1994 - 2005 Mack MR Series (Cabover / Refuse)
1989 - 2002 Navistar / International 7000 and 8000 Series
1988 - 2003 Navistar / International 9000 Series (Premium Conventional / Highway)
1988 - 2003 Navistar / International Paystar and S-Series (Severe Service / Dump / Concrete)
1992 - 2002 Western Star (Heritage and Constellation Series)
1995 - 2004 Volvo HD Conventional
Construction and Earthmoving Equipment
1993 - 2006 New Holland Construction (Backhoes and Crawlers)
1990 - 2002 Dresser / Komatsu-Dresser Mining Trucks and Wheel Loaders