Mercruiser 16413A 3 and P/N 16413A 9 V6 and V8 Thermostat Housings
Mercruiser P/N 16413A 3 and P/N 16413A 9 V6 and V8 Thermostat Housings Ordering Information
Models
All sterndrive, ski and inboard carbureted engines with this style thermostat housing.
Situation
The 2 Mercruiser thermostat housings shown below are no longer available. The casting is not available from the original supplier.
P/N 16413A 3 With Check Balls P/N 16413A 9 Without Check Balls
Ordering Replacement Kit
Before ordering replacement kit, look at the location of the threaded holes in the intake manifold as shown below. V6 and V8 305/350 cid engines have the threaded holes at 90o from the crankshaft centerline while the 454/502 cid Mark IV and Gen V engines are not. This new kit contains the older style thermostat housing that used the brass ‘Tee’ fitting with check balls.
V6 or V8 305/350 cid V8 – 87290A23Â or 13231 (No Offset Mounting Holes)
454/502 cid Mark IV or Gen V Order P/N 90736A24 (Offset Mounting Holes)
99-2 FEBRUARY 2000 Printed in U.S.A. –© 2000, Mercury Marine Page 1 of 1