what thermostat will fit????
 

longtime reader, my first post. i know its off the wall but
i need to find a replacement Tstat at a lower temp.
original equip was for Mercruiser 99155A1
aftermarket mallory that fits , 160F
mallory 9-43001
aftermarket sierra that fits, also 160F
sierra 18-3555
i need a Tstat that will be 140F and still fit.
having a hard time tracking this down, lots of tstats at 140F
but noone knows if they will fit the same.

this is the mallory
bypass type Tstat
http://www.iboats.com/Mallory_Thermo...view_id.365216

was originally for a 4 cylinder