Parts for MerCruiser 8.1L TowSport (Base) Block, Camshaft & Pistons
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Reference numbers in this diagram can be found in a light blue row below — scroll down to order.
#3 | 22-883919 | PLUG, Coolant Drain (1 required per assembly) |
22-883919 - Drain Plug [ More info ] Unavailable |
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#4 | 881669 | DRIVE, Oil Pump (1 required per assembly) |
881669 - Drive - Oil Pump [ More info ] Unavailable |
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8M0045287 - Drive-Oil Pump [ More info ] Unavailable |
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8M0099549 - 8M0099549 - DRIVER Oil Pump [ More info ] Unavailable Replaced by -8M0114791 |
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#5 | 10-881590 | SCREW, (M8 x 20), Oil Pump (1 required per assembly) |
#6 | 17-52190 | PIN, Cylinder Head Locating (4 required per assembly) |
#7 | 892617 | SENSOR, Crankshaft Position (1 required per assembly) |
#9 | 10-881595 | SCREW, (M6 x 21), Crankshaft Position Sensor (1 required per assembly) |
#10 | 11-68219 | NUT, (#10-32) Stainless Steel (1 required per assembly) |
#11 | 22-805563 | CONNECTOR, (.500 Inch NPTF To .500 Inch Inverted Flare), Oil Hose (1 required per assembly) |
#12 | 878187 | SENSOR ASSEMBLY, Knock (2 required per assembly) |
878187 - Knock Sensor [ More info ] Unavailable |
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#13 | 87-815425T | SENDER ASSEMBLY, Oil Pressure (1 required per assembly) |
815425T - Sender [ More info ] Unavailable |
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#14 | 22-34487 | PLUG, (.375-18 x .42), Pipe, Oil Galley (2 required per assembly) |
22-36373 - Plug [ More info ] Unavailable |
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#14 | 22-48341 | PLUG, (.125-27 x .375), Oil Galley (AR required per assembly) |
#14 | 22-881568 | PLUG, Engine Coolant (1 required per assembly) |
#14 | 22-881569 | PLUG, (.250-18 x .54), Engine Coolant (1 required per assembly) |
#15 | 17-843378 | PIN, Dowel (1 required per assembly) |
#16 | 23-85684 | BEARING SET (1 required per assembly) |
#17 | 13-26996 | LOCKWASHER, (#10) Stainless Steel (1 required per assembly) |
#18 | 22-38407 | PLUG, (.500-14), Pipe (1 required per assembly) |
#19 | 19-94140 | EXPANSION PLUG, Camshaft Bearing Hole (1 required per assembly) |
#20 | 431-881627 | CAMSHAFT (1 required per assembly) Base |
431-881627 - CamShaft [ More info ] Unavailable |
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#22 | 845941 | RETAINER, Camshaft (1 required per assembly) |
#23 | 10-881588 | SCREW (1 required per assembly) |
#24 | 892640001 | SPROCKET, Camshaft (1 required per assembly) |
#25 | 10-881570 | SCREW, (M8 x 25) (3 required per assembly) |
#26 | 881626 | CHAIN, Camshaft Timing (1 required per assembly) |
881626 - Chain [ More info ] Unavailable |
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#27 | 735-881592002 | PISTON ASSEMBLY, Standard/Floating Design, Starboard (4 required per assembly) |
#27 | 735-883515002 | PISTON ASSEMBLY, Standard/Floating Design, Port (4 required per assembly) |
#27 | 735-881596002 | PISTON ASSEMBLY, .030/Floating Design, Starboard (AR required per assembly) |
735-881596002 - Piston - 030- Stbd [ More info ] Unavailable |
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#27 | 735-881596001 | PISTON ASSEMBLY, .030/Floating Design, Without Connecting Rod (AR required per assembly) Starboard |
735-881596001 - ORD 735-881596002 [ More info ] Unavailable |
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#27 | 735-881597002 | PISTON ASSEMBLY, .030/Floating Design (AR required per assembly) Port |
#27 | 735-881597001 | PISTON ASSEMBLY, .030/Floating Design, Without Connecting Rod (AR required per assembly) Port |
735-881597001 - ORD 735-881597002 [ More info ] Unavailable |
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#28 | NSS | NOT SOLD SEPARATE, CONNECTING ROD (8 required per assembly) |
NSS - NOT SOLD SEPARATE [ More info ] Unavailable |
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#29 | 10-883917 | SCREW, Connecting Rod (16 required per assembly) |
#30 | 11-883918 | NUT, Connecting Rod (16 required per assembly) |
11-883918 - Nut, Connecting Rod [ More info ] Unavailable |
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11-8M0158156 - NUT [ More info ] Unavailable |
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#31 | 39-881601 | RING KIT, Piston (8 required per assembly) Standard |
#31 | 39-881602 | RING KIT, Piston (8 required per assembly) (.030) Oversize |
#32 | 23-883239 1 | BEARING, Connecting Rod (8 required per assembly) |
#33 | 22-881567001 | PLUG, Oil Galley (4 required per assembly) |
#35 | 22-48340 | PLUG, (.250-18 x .41), Oil Galley (1 required per assembly) |
22-8M0204652 - PLUG @2 [ More info ] Unavailable |
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#36 | 883925 | PUMP, Circulating (1 required per assembly) |
883925 - Water Pump Assembly [ More info ] Unavailable |
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#37 | 27-881603001 | GASKET, Circulating Pump (2 required per assembly) |
#38 | 862583 | PULLEY, Circulating Pump (1 required per assembly) |
862583 - Circulating Pump Pulley [ More info ] Unavailable |
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#39 | 10-40107 16 | SCREW, (M8 x 16) (4 required per assembly) |
#40 | 10-881576 | SCREW, (M10 x 65) (3 required per assembly) |
#40 | 10-884036 | SCREW, (M10 x 95) (1 required per assembly) |
#41 | 16-862915 | STUD, (.250-18/M10 Special), Knock Sensor (2 required per assembly) |
#42 | 11-826292 | NUT, (M10) Brass/Nickel Plated, Knock Sensor (2 required per assembly) |
#43 | 881879011 | SENSOR, Pressure (0 - 100 PSI), Oil Pressure (1 required per assembly) |
881879011 - Pressure Sensor [ More info ] Unavailable |
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#44 | 22-29085 | FITTING, Elbow (45 Degree) (2 required per assembly) |
22-29085 - Fitting [ More info ] Unavailable |
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22-8M0109010 - Fitting [ More info ] Unavailable |
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#45 | 22-64013 | FITTING, (.375 Male To .125 Female), Reducer (1 required per assembly) |
#46 | 22-805059 | FITTING, Reducer Bushing (1 required per assembly) |