We use these in all our spec cars to simplify the cooling system.  These aluminum plugs allow you to delete all the unnecessary heater return lines that go from the thermostat to the heater core and back to the upper radiator hose.

Kit includes:

• 1 hose block off for the heater return line from the thermostat
• 1 hose block off for the upper radiator hose

Fitment:

1' E87   03/2005 —  06/2011
1' E88   11/2006 — 10/2013
1' E82   12/2006 — 10/2013
3' E90   02/2004 —  02/2012
3' E91   02/2004 —  05/2012
3' E92   05/2005 —  06/2013
3' E93   09/2005 —  10/2013