Parts for MerCruiser 8.1L Inboard (H.O.) 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.
#NS | 865519A01 | LONGBLOCK ASSEMBLY, Base (1 required per assembly) (Block Codes 4WW and 4WY) |
865519A01 - LONGBLOCK [ More info ] Unavailable |
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865752A01 - 8M0086000 [ More info ] Unavailable |
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#NS | 865752A01 | LONGBLOCK ASSEMBLY, Base (1 required per assembly) (Block Codes 4ZW and 4ZY) |
#NS | 865521A01 | LONGBLOCK ASSEMBLY, H.O. (1 required per assembly) (Block Codes 4WA and 4WF) |
865521A01 - LONGBLOCK [ More info ] Unavailable |
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865754A01 - Lb 496 Ho 01-UP [ More info ] Unavailable |
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#NS | 865754A01 | LONGBLOCK ASSEMBLY, H.O. (1 required per assembly) (Block Codes 4ZA and 4ZF) |
#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, 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 | 10-881595 | SCREW, (M6 x 21), Oil Pump (1 required per assembly) |
#6 | 17-845758 | PIN, Dowel, Cylinder Head Locating (4 required per assembly) |
17-845758 - Pin, Dowel, Cylinder Head Locating [ More info ] |
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#7 | 881667 | SENSOR, Crankshaft Position (1 required per assembly) |
881667 - Sensor [ More info ] Unavailable |
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#10 | 11-68219 | NUT, (#10-32) Stainless Steel (1 required per assembly) |
#11 | 22-805563 | CONNECTOR, (.500 Inch NPTF To .500 Inch Inverted Flare) (1 required per assembly) |
#12 | 878187 | SENSOR ASSEMBLY, Knock (2 required per assembly) |
#13 | 87-815425T | SENDER ASSEMBLY, Oil Pressure (1 required per assembly) |
815425T - Sender [ More info ] Unavailable |
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#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 | 17-35312 | PIN, Dowel (1/4 n. Diameter) (1 required per assembly) |
17-35312 - Pin, Dowel (1/4 Inch Dia.) [ More info ] Unavailable |
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#16 | 23-881659 | BEARING, Camshaft (1 required per assembly) (pos 1) |
23-881659 - Ord 23- 85684, NLA [ More info ] Unavailable |
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#17 | 23-881660 | BEARING, Camshaft (2 required per assembly) (pos 2 / 5) |
23-881660 - Ord 23- 85684, NLA [ More info ] Unavailable |
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#18 | 23-881661 | BEARING, Camshaft (2 required per assembly) (pos 3 / 4) |
23-881661 - Ord 23- 85684, NLA [ More info ] Unavailable |
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#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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#20 | 431-881628 | CAMSHAFT (1 required per assembly) (H.O.) |
431-881628 - 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 | 892640 | SPROCKET, Camshaft (1 required per assembly) |
892640 - CamShaft Sprocket [ More info ] Unavailable |
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#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 | 735-881592 | PISTON ASSEMBLY, Standard (Starboard) (4 required per assembly) SN# BASE 0W020104 / H.O. 0W020080 & Below |
735-881592 - Piston - Standard - Starboard [ More info ] Unavailable |
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#27 | 735-881592002 | PISTON ASSEMBLY, Standard/Floating Design (Starboard) (4 required per assembly) SN# BASE 0W020105 / H.O. 0W020081 & Up |
#27 | 735-881592001 | PISTON ASSEMBLY, Standard/Floating Design (Starboard) (4 required per assembly) SN# BASE 0W020105 / H.O. 0W020081 & Up |
735-881592001 - Ord 735-88159200, NLA [ More info ] Unavailable |
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#27 | 735-883515 | PISTON ASSEMBLY, Standard (Port) (4 required per assembly) SN# BASE 0W020104 / H.O. 0W020080 & Below |
735-883515 - Piston - Standard-PORT [ More info ] Unavailable |
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#27 | 735-883515002 | PISTON ASSEMBLY, Standard/Floating Design (Port) (4 required per assembly) SN# BASE 0W020105 / H.O. 0W020081 & Up |
#27 | 735-883515001 | PISTON ASSEMBLY, Standard/Floating Design (Port) (4 required per assembly) SN# BASE 0W020105 / H.O. 0W020081 & Up |
735-883515001 - Ord 735-88351500, NLA [ More info ] Unavailable |
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#27 | 735-881596 | PISTON ASSEMBLY, .030 Oversize (Starboard) (AR required per assembly) SN# BASE 0W020104 / H.O. 0W020080 & Below |
735-881596 - Piston - .030- Stbd [ More info ] Unavailable |
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735-881596002 - Piston - 030- Stbd [ More info ] Unavailable |
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#27 | 735-881596002 | PISTON ASSEMBLY, .030/Floating Design (Starboard) (AR required per assembly) SN# BASE 0W020105 / H.O. 0W020081 & Up |
#27 | 735-881596001 | PISTON ASSEMBLY, .030/Floating Design, Without Connecting Rod(Starboard) (AR required per assembly) SN# BASE 0W020105 / H.O. 0W020081 & Up |
735-881596001 - ORD 735-881596002 [ More info ] Unavailable |
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#27 | 735-881597 | PISTON ASSEMBLY, .030 Oversize (Port) (AR required per assembly) SN# BASE 0W020104 / H.O. 0W020080 & Below |
735-881597 - Piston-.030-PORTC [ More info ] Unavailable |
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#27 | 735-881597002 | PISTON ASSEMBLY, .030/Floating Design (Port) (AR required per assembly) SN# BASE 0W020105 / H.O. 0W020081 & Up |
#27 | 735-881597001 | PISTON ASSEMBLY, .030/Floating Design, Without Connecting Rod(Port) (AR required per assembly) SN# BASE 0W020105 / H.O. 0W020081 & Up |
735-881597001 - ORD 735-881597002 [ More info ] Unavailable |
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#28 | NSS | NOT SOLD SEPARATE, Connecting Rod (8 required per assembly) SN# BASE 0W020104 / H.O. 0W020080 & Below |
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(Standard) (8 required per assembly) |
#31 | 39-881602 | RING KIT, Piston (8 required per assembly) (.030 Over Size) |
#32 | 23-883239 | BEARING, Connecting Rod (8 required per assembly) |
23-883239 - Bearing - Connecting Rod [ More info ] Unavailable |
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#33 | 22-881567 | PLUG, Oil Galley (4 required per assembly) |
22-881567 - PLUG [ More info ] Unavailable |
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#34 | 22-881598 | PLUG, Oil Galley (3 required per assembly) |
22-881598 - 22-881598 - PLUG [ More info ] Unavailable Replaced by 22-48341 |
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#35 | 22-48341 | PLUG, (.125-27 x .375), Oil Galley (AR required per assembly) |
#35 | 22-34487 | PLUG, (.375-18 x .42), Pipe - Oil Galley (2 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 | 883514 | PUMP, Circulating |
883514 - Water Pump [ More info ] Unavailable |
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883925 - Water Pump Assembly [ More info ] Unavailable |
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#37 | 27-881603 | GASKET, Circulating Pump (2 required per assembly) |
27-881603 - Circulating Pump Gasket [ More info ] Unavailable |
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#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 | 881879A 6 | SENSOR, (0 - 100 PSI), Oil Pressure (1 required per assembly) |
881879A 6 - Sensor Kit [ More info ] Unavailable |
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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) (1 required per assembly) |
#46 | 22-805059 | FITTING, Reducer Bushing (1 required per assembly) |
#47 | 13-26996 | LOCKWASHER, (#10) Stainless Steel (1 required per assembly) |
#48 | 22-38407 | PLUG, (.500-14), Pipe (1 required per assembly) |