MerCstuff. Com

MerCruiser Thermostat Housings

V-8 GM Stainless Steel

This is MerCruiser p/n 860256A4 Stainless Steel thermostat housing. It is used on later model V- 8 G.M. engines.

It can be used in place of #87290A4 & #861006A1 with shorter bolts ( not included ).

This comes from Sierra Marine with all parts shown.

Wt. 4 1/2 Lbs.

Click here for installation instructions

: Order # 1989

V-8 GM

This is MerCruiser p/n 78984A1 ( Old #59861A4 ) Cast Iron thermostat housing. It is used on earlier model V - 8 G.M. engines.

This item comes from GLM Marine and weighs 11 lbs.

: Order # 3530

V-8 Ford

This is MerCruiser p/n 889333 Cast Iron thermostat housing. It is used on earlier model V - 8 Ford engines.

It replaces p/n 59497A1 & 63588A1

This item comes from MerCruiser and weighs 7 lbs.

: Order # 9333

V-6 & V-8 GM

This is MerCruiser p/n 87290A23 cast iron thermostat housing assembly. It is used on
V- 6 & V- 8 305/350 CID small block engines.

It replaces old p/n 16413A3 & 16413A9

This item comes from G.L.M. Marine with all parts shown.

Shipping Wt. 13 Lbs.

: Order # 3231

Please Note ! This assembly is for engine blocks which have the (2) mounting holes at 90 degrees from the crankshaft centerline.

V-8 454 & 502 GM

This is MerCruiser p/n 90736A24 cast iron thermostat housing assembly. It is used on
V- 8 454/502 CID big block engines.

It replaces old p/n 16413A3 & 16413A9

This item comes from G.L.M. Marine with all parts shown.

Shipping Wt. 13 Lbs.

: Order # 3221

Please Note ! This assembly is for engine blocks which have the (2) mounting holes at 80 degrees from the crankshaft centerline.