"The Mishimoto racing thermostat for the 70-73 Datsun 240Z will promote greater cooling efficiency in your stock or modified 240Z. Once the engine is fully warmed up, Mishimoto's Datsun 240Z racing thermostat will open at a lower temperature than standard thermostats. This allows coolant to flow through the engine sooner, which reduces and maintains cooler engine temperatures. The Mishimoto 70-73 Datsun 240Z racing thermostat is the perfect addition to your street or track 240Z and is a direct replacement for the stock thermostat. This thermostat includes the signature Mishimoto Lifetime Warranty. " Racing Thermostat, fits Datsun 240Z 1970-1973 1999-2004 Ford Mustang Base 3.8 Liter 4R70W, 1999-2000 Ford Mustang Base 3.8 Liter T-45, 2001-2004 Ford Mustang Base 3.8 Liter T45OD, 1999-2003 Ford Mustang Base 3.8 Liter T5, 2001-2004 Ford Mustang Base 3.8 Liter T5OD, 2001-2004 Ford Mustang Base 3.8 Liter TR3650, 2001-2003 Ford Ranger Edge 3.0 Liter 5R44E, 2005 Ford Ranger Edge 3.0 Liter 5R44E, 2001 Ford Ranger Edge 3.0 Liter 5R55E, 2003-2005 Ford Ranger Edge 3.0 Liter 5R55E, 2001-2005 Ford Ranger Edge 3.0 Liter R1, 2001-2005 Ford Ranger Edge 3.0 Liter R1HD, 2006-2007 Ford Ranger Sport 3.0 Liter 5R44E, 2006-2008 Ford Ranger Sport 3.0 Liter 5R55E, 2006-2008 Ford Ranger Sport 3.0 Liter M5R1HD, 2005-2007 Ford Ranger STX 3.0 Liter 5R44E, 2006-2007 Ford Ranger STX 3.0 Liter 5R55E, 2006-2007 Ford Ranger STX 3.0 Liter M5R1HD, 2005 Ford Ranger STX 3.0 Liter R1, 2004 Ford Ranger Tremor 3.0 Liter 5R55E, 2004 Ford Ranger Tremor 3.0 Liter R1, 2004 Ford Ranger Tremor 3.0 Liter R1HD, 1999-2001 Ford Ranger XL 3.0 Liter 4R44E, 2001-2003 Ford Ranger XL 3.0 Liter 5R44E, 2005-2007 Ford Ranger XL 3.0 Liter 5R44E, 2001 Ford Ranger XL 3.0 Liter 5R55E, 2003-2008 Ford Ranger XL 3.0 Liter 5R55E, 2006-2008 Ford Ranger XL 3.0 Liter M5R1HD, 1999-2005 Ford Ranger XL 3.0 Liter R1, 2001-2005 Ford Ranger XL 3.0 Liter R1HD, 1999-2001 Ford Ranger XLT 3.0 Liter 4R44E, 2001-2003 Ford Ranger XLT 3.0 Liter 5R44E, 2005-2007 Ford Ranger XLT 3.0 Liter 5R44E, 1999-2008 Ford Ranger XLT 3.0 Liter 5R55E, 2006-2008 Ford Ranger XLT 3.0 Liter M5R1HD, 1999-2005 Ford Ranger XLT 3.0 Liter R1, 2001-2005 Ford Ranger XLT 3.0 Liter R1HD, 1998-1999 Ford Taurus LX 3.0 Liter AX4N, 1998-1999 Ford Taurus LX 3.0 Liter AX4N, 1998-1999 Ford Taurus LX 3.0 Liter AX4S, 1998-1999 Ford Taurus LX 3.0 Liter AX4S, 1998-1999 Ford Taurus SE 3.0 Liter AX4N, 1998-1999 Ford Taurus SE 3.0 Liter AX4N, 1998-1999 Ford Taurus SE 3.0 Liter AX4S, 1998-1999 Ford Taurus SE 3.0 Liter AX4S, 1998 Ford Taurus SE Comfort 3.0 Liter AX4N ...See Application Guide for Additional Fitments