Props & Prop Thrust Washers
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The correct
thrust washer MUST be used with your propeller or cavitation, or even worse,
damage can be done to your drive.
Too thin of a
thrust washer with the old style prop ( with the big thick rubber insert ) will
allow the propeller to go too deep into the lower housing, causing the propeller
to actually cut into the 4 3/8 carrier nut. This is extremely hard the gears in
the lower unit.
Too thick of a
thrust washer with the Black Max style prop will not allow the propeller to go
deep enough into the lower housing causing cavitation. You will get to a certain
RPM and the prop will free spin, making you think the prop hub is bad.
Early Style Props
If the back of
your prop looks like this where you can see a large rubber insert, then you have
what is known as the early style propeller. Michigan Wheel refers to these as
the SMC series. Some people call them Elephant Ear propellers. These props and
thrust washers were made from 1965 thru 1982.
Note ! These
propellers are no longer available from either Michigan Wheel or MerCruiser.
This is the
correct thrust washer for the early style propeller. It is .715 overall
thickness ( a little smaller than 3/4 inch ), has a stainless steel outer ring and has 4 segments cast into
it.
: Order # 6292
Black Max Series Props
If the back of
your prop looks like this where you only see a large metal insert ( no rubber
showing ), then you have what is known as the Black Max series propeller.
Michigan Wheel refers to these as the PM series. These props and thrust washers
were made from 1983 thru Date.
This is the
correct thrust washer for the Black Max series propeller. It is .430 overall thickness
( a little smaller than 1/2 inch ) and is made from a solid piece with no
stainless steel outer ring.
: Order # 1301
Vortex
& Black Diamond
If the back of
your prop looks like this where you only see a large square hole ( no rubber or
metal showing ), then you have what is known as a Flo-Torq style propeller.
Michigan Wheel refers to these as Vortex propellers and MerCruiser calls them
Black Diamond ( formerly Typhoon ) propellers. These props and thrust washers were made from 1990 thru
Date.
This is the
correct thrust hub kit for the Vortex & Black Diamond prop. This thrust washer is also .430
thick but is a little smaller in diameter.
: Order # 5257
Bravo 3 Large Thrust Washer
This is the
forward Bravo 3 propeller thrust washer p/n # 805100.
It is the larger of the (2) thrust washers and goes on first.
It measures
approximately:
13/16 thick x 2 5/16 ID x 2 3/4 OD
: Order # 5100
Bravo 3 Small Thrust Washer
This is the
aft Bravo 3 propeller thrust washer p/n # 805101.
It measures
approximately:
9/16 thick x 1 5/16 ID x 1 3/4 OD
Click Here For
Bravo 3 Prop Nuts
Click here for Bravo 3 Prop Wrenches
: Order # 5101
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Here For Prices
MerCstuff,
llc 
