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Parts for MerCruiser Race Engine and Drive 525 EFI Engine Components (Cylinder Block & Camshaft)

#1 841178A 1 PARTIAL ENGINE ASSEMBLY (1 required per assembly) - NOTE: Bravo Models With Driveline Also Require Pilot Bushing Part Number 23-823108
PARTIAL-525 EFI 841178A 1
 

About Mercury Marine

OEM Part

841178A 1 - Partial - 525 Efi [ More info ]

Add to shopping cart $17,616.04
Available to order: Usually ships within 8 days. Explain stock levels

#2 22-32561 PLUG, Pipe - Allen Head (.250-18), Oil Gallery Rear Cam Plugs (3 required per assembly)
PLUG Note: must be ordered in multiples of 2 22-32561
22-32561

About Mercury Marine

OEM Part

22-32561 - Plug - Priced Individually [ More info ]

Add to shopping cart $5.00
10+ in stock. Explain stock levels

#3 17-843379 PIN, Dowel (.6206/.6211 x 1.20), Flywheel Housing (2 required per assembly)
17-843379 - PIN Dowel (.6206/ O NLA
 

About Mercury Marine

OEM Part

17-843379 - PIN Dowel (.6206/ O NLA [ More info ]
Unavailable
#4 805218T SENSOR, Coolant (1 required per assembly)
SENSOR ASSY-TEMP 805218T
805218T

About Mercury Marine

OEM Part

805218T - Temperature Sensor [ More info ]

Add to shopping cart $53.50
2 in stock. Explain stock levels

Coolant Temp Sensor
18-7600

About Sierra Marine

OEM Match

18-7600 - Sensor 805218T [ More info ]

Add to shopping cart $30.49 $24.78
1 in stock. Explain stock levels

Cam Shaft Sensor
E13-0009

About CDI Electronics

OEM Match

E13-0009 - Coolant Temp Sensor [ More info ]

Add to shopping cart $30.68 $24.87
Available to order: Usually ships within 8 days. Explain stock levels

#5 17-35312 PIN, Dowel (.250) Bottom Of Block (2 required per assembly)
17-35312 - PIN Dowel (1/4 In O - Replaced by 17-843378
 

This part has been superseded.

17-35312 - 17-35312 - PIN Dowel (1/4 In O [ More info ]
Unavailable
Replaced by 17-843378
PIN-DOWEL 17-843378
 

About Mercury Marine

OEM Part

17-843378 - Pin -Dowel [ More info ]

Add to shopping cart $12.40
4 in stock. Explain stock levels

#6 22-36373 PLUG, (.375-18) Hex - Steel, Bottom Of Block Oil Plug (1 required per assembly)
PLUG (.375-18) Hex - St 22-36373
 

About Mercury Marine

OEM Part

22-36373 - Plug [ More info ]

Add to shopping cart $4.40
4 in stock. Explain stock levels

#7 22-64013 FITTING, (.375 Male To .125 Female) (1 required per assembly)
REDUCER 22-64013
 

About Mercury Marine

OEM Part

22-64013 - Reducer [ More info ]

Add to shopping cart $8.60
2 in stock. Explain stock levels

#8 881879011 SENSOR, Pressure (0 - 100 PSI), Oil Pressure (1 required per assembly)
881879011 - SENSOR Pressure ( O - Replaced by -881879T11
881879011

This part has been superseded.

881879011 - 881879011 - SENSOR Pressure ( O [ More info ]
Unavailable
Replaced by -881879T11
SENSOR-PRESSURE 881879T11
881879T11

About Mercury Marine

OEM Part

881879T11 - Pressure Sensor [ More info ]

Add to shopping cart $150.75
1 in stock. Explain stock levels

#9 16-862915 STUD, (.250-18/M10 Special), Knock Sensor Assembly Mount (2 required per assembly)
STUD (.250-18/M10 Speci 16-862915
 

About Mercury Marine

OEM Part

16-862915 - Stud [ More info ]

Add to shopping cart $21.25
Available to order: Usually ships within 8 days. Explain stock levels

#10 11-826292 NUT, (M10) Brass/Nickel Plated (2 required per assembly)
NUT (M10) Brass/Nickel 11-826292
 

About Mercury Marine

OEM Part

11-826292 - Nut [ More info ]

Add to shopping cart $3.20
1 in stock. Explain stock levels

#11 878187 SENSOR ASSEMBLY, Knock (2 required per assembly)
878187 - SENSOR ASSEMBLY K O - Replaced by -8M6003194
878187

This part has been superseded.

878187 - 878187 - SENSOR ASSEMBLY K O [ More info ]
In stock Explain stock levels
Replaced by -8M6003194
SENSOR-KNOCK
 

About Mercury Marine

OEM Part

8M6003194 - Knock Sensor [ More info ]

Add to shopping cart $57.75
2 in stock. Explain stock levels

KNOCK SENSOR
18-7554

About Sierra Marine

OEM Match

18-7554 - Knock Sensor 878187 [ More info ]

Add to shopping cart $90.89 $75.90
2 in stock. Explain stock levels

#12 22-36382 FITTING, (.250-18 x .62) Brass, Lower Side Of Block (2 required per assembly)
PLUG 22-36382
22-36382

About Mercury Marine

OEM Part

22-36382 - Plug [ More info ]

Add to shopping cart $4.20 $2.84
10+ in stock. Explain stock levels

Pipe Plug
18-8111

About Sierra Marine

OEM Match

18-8111-9 - Pipe Plug, 1/4 Inch, (Pack of 3) [ More info ]

Add to shopping cart $10.77 $7.50
10+ in stock. Explain stock levels

Plug  1/4IN Brass
18-4256

About Sierra Marine

OEM Match

18-4256 - Plug, 1/4 Inch Brass, Sold Individually [ More info ]

Add to shopping cart $1.99 $1.42
9 in stock. Explain stock levels

#13 19-34270 EXPANSION PLUG, (1.625) (6 required per assembly)
PLUG-1.625 19-34270
19-34270

About Mercury Marine

OEM Part

19-34270 - Freeze Plug, 1-5/8 Inch [ More info ]

Add to shopping cart $7.40
Available to order: Usually ships within 8 days. Explain stock levels

#14 17-845758 PIN, Dowel, .660 Relaxed Outside Diameter x .500 (4 required per assembly)
1752190 17-845758
 

About Mercury Marine

OEM Part

17-845758 - Pin -Dowel [ More info ]

Add to shopping cart $2.30
10+ in stock. Explain stock levels

PIN-DOWEL 17-52190
 

About Mercury Marine

OEM Part

17-52190 - Pin -Dowel [ More info ]

Add to shopping cart $8.20
9 in stock. Explain stock levels

#15 17-843143 PIN, Spring, Port Side - Timing Cover (1 required per assembly)
PIN-SPRING 17-843143
 

About Mercury Marine

OEM Part

17-843143 - Spring Pin [ More info ]

Add to shopping cart $1.63
Available to order: Usually ships within 8 days. Explain stock levels

#17 845606 PLUG, (.250-18 x .410) Allen Head With Hole, Oil Gallery (2 required per assembly)
845606 - PLUG (.250-18 x . O - Replaced by 22-8M0044324
845606

This part has been superseded.

845606 - 845606 - PLUG (.250-18 x . O [ More info ]
Unavailable
Replaced by 22-8M0044324
PLUG (1/4 Inch) 22-8M0044324
 

About Mercury Marine

OEM Part

22-8M0044324 - Plug [ More info ]

Add to shopping cart $4.10
Available to order: Usually ships within 8 days. Explain stock levels

#18 22-32802 2 PLUG, Pipe (.125-27) Brass, Oil Gallery (3 required per assembly)
PLUG-(BRASS)Note: must be ordered in multiples of 2 22-32802  2
22-32802  2

About Mercury Marine

OEM Part

22-32802 2 - Plug, Brass - Priced Individually [ More info ]

Add to shopping cart $5.80
5 in stock. Explain stock levels

Pipe Plug  1/8-27 Npt Pipe
18-4263

About Sierra Marine

OEM Match

18-4263 - Pipe Plug, 1/8-27 NPT, Brass [ More info ]

Add to shopping cart $4.49 $3.24
2 in stock. Explain stock levels

#19 10-841389 SCREW, (.312-18 x .620) (4 required per assembly)
SCREW (.312-18 x .620) 10-841389
10-841389

About Mercury Marine

OEM Part

10-841389 - Screw [ More info ]

Add to shopping cart $1.30
Available to order: Usually ships within 8 days. Explain stock levels

#20 845755 RETAINER, Lifter Guide (1 required per assembly)
845755 - RETAINER          O - Replaced by -8M0050807
845755

This part has been superseded.

845755 - 845755 - RETAINER O [ More info ]
Unavailable
Replaced by -8M0050807
RETAINER-LIFTER 8M0050807
 

About Mercury Marine

OEM Part

8M0050807 - Lifter Retainer [ More info ]

Add to shopping cart $43.33
Available to order: Usually ships within 8 days. Explain stock levels

#21 19-94140 EXPANSION PLUG (1 required per assembly)
PLUG 19-94140
 

About Mercury Marine

OEM Part

19-94140 - Plug [ More info ]

Add to shopping cart $3.90 $2.19
7 in stock. Explain stock levels

#22 849947T LIFTER (16 required per assembly)
849947T - LIFTER            O - Replaced by -849947T01
849947T

This part has been superseded.

849947T - 849947T - LIFTER O [ More info ]
Unavailable
Replaced by -849947T01
LIFTER 849947T01
849947T01

About Mercury Marine

OEM Part

849947T01 - Lifter [ More info ]

Add to shopping cart $135.17
Available to order: Usually ships within 8 days. Explain stock levels

#23 845754 GUIDE, Lifter (8 required per assembly)
GUIDE-LIFTER 845754
845754

About Mercury Marine

OEM Part

845754 - Guide - Lifter [ More info ]

Add to shopping cart $6.10
1 in stock. Explain stock levels

#24 2409-840919T CAMSHAFT (1 required per assembly)
2409-840919T - CAMSHAFT          O - Replaced by 400-8M0043065
2409-840919T

This part has been superseded.

2409-840919T - 2409-840919T - CAMSHAFT O [ More info ]
Unavailable
Replaced by 400-8M0043065
CAMSHAFT 400-8M0043065
400-8M0043065

About Mercury Marine

OEM Part

4008M0043065 - CamShaft [ More info ]

Add to shopping cart $1,048.76
Available to order: Usually ships within 8 days. Explain stock levels

#25 92-15875 LUBE, Camshaft (8 Ounces) (AR required per assembly)
92-15875 - LUBE              O NLA
 

About Mercury Marine

OEM Part

92-15875 - LUBE O NLA [ More info ]
Unavailable
#26 23-85684 BEARING SET (1 required per assembly)
BEARING SET 23-85684
23-85684

About Mercury Marine

OEM Part

23-85684 - Bearing Set [ More info ]

Add to shopping cart $95.42
2 in stock. Explain stock levels

#28 845941 RETAINER, Gear Thrust (1 required per assembly)
RETAINER 845941
845941

About Mercury Marine

OEM Part

845941 - Retainer [ More info ]

Add to shopping cart $20.17
Available to order: Usually ships within 8 days. Explain stock levels

#29 10-845943 SCREW, (.250-20 x .500) (2 required per assembly)
SCREW (.250-20 x .500) 10-845943
10-845943

About Mercury Marine

OEM Part

10-845943 - Screw [ More info ]

Add to shopping cart $4.90
Available to order: Usually ships within 8 days. Explain stock levels

#30 8M8023355 TIMING SET KIT (1 required per assembly)
TIMING SET KIT 8M8023355
 

About Mercury Marine

OEM Part

8M8023355 - Timing Set Kit [ More info ]

Add to shopping cart $207.42
Available to order: Usually ships within 8 days. Explain stock levels

#31 NSS NOT SOLD SEPARATE, Crankshaft Sprocket (1 required per assembly)
NSS - NOT SOLD SEPARATE O
 

About Mercury Marine

OEM Part

NSS - NOT SOLD SEPARATE O [ More info ]
Unavailable
#33 10-845942 SCREW, (.312-18 x .750) (3 required per assembly)
108M0043993 10-845942
10-845942

About Mercury Marine

OEM Part

10-845942 - Screw [ More info ]

Add to shopping cart $6.20
Available to order: Usually ships within 8 days. Explain stock levels

#34 27-843073A03 GASKET/SEAL SET, Engine Overhaul (1 required per assembly) - NOTE: See Gasket/Seal Set - Engine Overhaul Section For Complete Parts Listing
27-843073A03 - GASKET/SEAL SET E O - Replaced by 27-843073A06
 

This part has been superseded.

27-843073A03 - 27-843073A03 - GASKET/SEAL SET E O [ More info ]
Unavailable
Replaced by 27-843073A06
GASKET/SEAL SET Engine 27-843073A06
27-843073A06

About Mercury Marine

OEM Part

27-843073A06 - Gasket/Seal Set [ More info ]

Add to shopping cart $974.99
Available to order: Usually ships within 8 days. Explain stock levels