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Parts for MerCruiser Race Engine and Drive 525 EFI Engine Components (Cylinder Head)

#1 845708A 7 COVER ASSEMBLY, Rocker Valve - Blue, Port (1 required per assembly)
COVER ASSY-PORT   O - Replaced by -8M0050913
 

This part has been superseded.

845708A 7 - COVER ASSY-PORT O [ More info ]
Unavailable
Replaced by -8M0050913
COVER ASSEMBLY Rock 8M0050913
 

About Mercury Marine

OEM Part

8M0050913 - Cover Assembly - Port [ More info ]

Add to shopping cart $387.74
Available to order: Usually ships within 8 days. Explain stock levels

#2 845708A 9 COVER ASSEMBLY, Rocker Valve - Blue, Starboard (1 required per assembly)
COVER ASSY-STBD   O - Replaced by -8M0052328
 

This part has been superseded.

845708A 9 - COVER ASSY-STBD O [ More info ]
Unavailable
Replaced by -8M0052328
COVER ASSY-STBD 8M0052328
 

About Mercury Marine

OEM Part

8M0052328 - Cover Assembly - Stbd [ More info ]

Add to shopping cart $380.48
Available to order: Usually ships within 8 days. Explain stock levels

#3 27-811588 GASKET, Rocker Cover (2 required per assembly)
278M0092920 27-811588
27-811588

About Mercury Marine

OEM Part

27-811588 - Gasket [ More info ]

Add to shopping cart $40.00
10+ in stock. Explain stock levels

ROCKER COVER GASKET
27-8M0092920

About Mercury Marine

OEM Part

27-8M0092920 - ROCKER Cover Gasket [ More info ]

Add to shopping cart $85.33
3 in stock. Explain stock levels

ROCKER COVER GASKET
18-25002

About Sierra Marine

OEM Match

18-25002 - Gasket 27-811588 [ More info ]

Add to shopping cart $131.99 $107.39
1 in stock. Explain stock levels

#4 10-39349 SCREW, (.312-18 x .750) Stainless Steel (2 required per assembly)
SCREW (.312-18 x .750) 10-39349
10-39349

About Mercury Marine

OEM Part

10-39349 - Screw - Priced Individually [ More info ]

Add to shopping cart $1.40
6 in stock. Explain stock levels

#5 12-70132 WASHER, (.323 x .563 x .063) Stainless Steel (2 required per assembly)
WASHER @5         O - Replaced by 12-8M0042642
12-70132

This part has been superseded.

12-70132 - WASHER @5 O [ More info ]
Unavailable
Replaced by 12-8M0042642
WASHER (.323 x .562 x . 12-8M0042642
12-8M0042642

About Mercury Marine

OEM Part

12-8M0042642 - Washer - Priced Individually [ More info ]

Add to shopping cart $1.40
10 in stock. Explain stock levels

#6 25-26802 O-RING, (.424 x .103) (2 required per assembly)
O-RING (.424 x .103) 25-26802
25-26802

About Mercury Marine

OEM Part

25-26802 - O-Ring - Priced Individually [ More info ]

Add to shopping cart $2.90
9 in stock. Explain stock levels

O-Ring
18-7180

About Sierra Marine

OEM Match

18-7180-9 - O-Ring (PK5 ) 925055 [ More info ]

Add to shopping cart $14.95 $10.08
5 in stock. Explain stock levels

#7 25-811553 GROMMET (2 required per assembly)
GROMMET 25-811553
 

About Mercury Marine

OEM Part

25-811553 - Grommet [ More info ]

Add to shopping cart $26.09
Available to order: Usually ships within 8 days. Explain stock levels

#8 97850 ELBOW, 90 Degree, Breather (2 required per assembly)
97850T 97850
 

About Mercury Marine

OEM Part

97850 - Elbow-Breather [ More info ]

Add to shopping cart $2.00
1 in stock. Explain stock levels

ELBOW 90 Degree 97850T
97850T

About Mercury Marine

OEM Part

97850T - Elbow [ More info ]

Add to shopping cart $3.90
5 in stock. Explain stock levels

#9 37-849950 DECAL, Oil Fill Cap (2 required per assembly)
DECAL Oil Fill Cap 37-849950
 

About Mercury Marine

OEM Part

37-849950 - Decal [ More info ]

Add to shopping cart $4.23
Available to order: Usually ships within 8 days. Explain stock levels

#10 36-845753T 1 CAP, Oil Filler (2 required per assembly)
CAP 845753T 1
845753T 1

About Mercury Marine

OEM Part

845753T 1 - Oil Fill Cap [ More info ]

Add to shopping cart $13.30
1 in stock. Explain stock levels

#11 54-42553 J CLIP (1 required per assembly)
J CLIP 54-42553
 

About Mercury Marine

OEM Part

54-42553 - J Clip [ More info ]

Add to shopping cart $4.30
Available to order: Usually ships within 8 days. Explain stock levels

#12 54-858951 J CLIP (3 required per assembly)
J CLIP 54-858951
 

About Mercury Marine

OEM Part

54-858951 - J Clip [ More info ]

Add to shopping cart $4.80
Available to order: Usually ships within 8 days. Explain stock levels

#14 22-849999 FITTING, Tee (1 required per assembly)
FITTING 22-849999
 

About Mercury Marine

OEM Part

22-849999 - Fitting [ More info ]

Add to shopping cart $4.20
Available to order: Usually ships within 8 days. Explain stock levels

#15 32-15894 31 TUBING, (20.00 Inches Bulk), Cut As Required - Breather (1 required per assembly)
328M0086022 32-15894 31
32-15894 31

About Mercury Marine

OEM Part

32-15894 31 - Tube - 20 Inch [ More info ]

Add to shopping cart $28.58
Available to order: Usually ships within 8 days. Explain stock levels

#16 56762 TIE STRAP, (4.00 Inches) (AR required per assembly)
TIE STRAP (4.00 Inches) 56762
56762

About Mercury Marine

OEM Part

56762 - Tie Strap - Priced Individually [ More info ]

Add to shopping cart $0.30
10+ in stock. Explain stock levels

#17 11-35888 NUT, (.250-28) Stainless Steel (14 required per assembly)
NUT (.250-28) Stainless 11-35888
11-35888

About Mercury Marine

OEM Part

11-35888 - Nut - Priced Individually [ More info ]

Add to shopping cart $4.80 $1.15
10+ in stock. Explain stock levels

S.S. Steel Locknut
18-3722

About Sierra Marine

OEM Match

18-3722-9 - Lock Nut, 121731, 11-35888 [ More info ]

Add to shopping cart $14.95 $7.67
1 in stock. Explain stock levels

#18 12-846673 WASHER, (.265 x .500 x .060) Stainless Steel (14 required per assembly)
WASHER (.265 x .500 x . 12-846673
 

About Mercury Marine

OEM Part

12-846673 - Washer [ More info ]

Add to shopping cart $0.80
Available to order: Usually ships within 8 days. Explain stock levels

#19 16-56766 STUD, (.250-20/.250-28 x 1.380) (14 required per assembly)
STUD (.250-20/.250-28 x 16-56766
16-56766

About Mercury Marine

OEM Part

16-56766 - Stud - Priced Individually [ More info ]

Add to shopping cart $2.50
Available to order: Usually ships within 8 days. Explain stock levels

#20 843140 LOCK, Valve Stem (32 required per assembly)
LOCK-VALVE @2     O - Replaced by -8M0042989
843140

This part has been superseded.

843140 - LOCK-VALVE @2 O [ More info ]
Unavailable
Replaced by -8M0042989
LOCK-VALVE Note: must be ordered in multiples of 2 8M0042989
8M0042989

About Mercury Marine

OEM Part

8M0042989 - Lock - Valve - Priced Individually [ More info ]

Add to shopping cart $5.17
Available to order: Usually ships within 8 days. Explain stock levels

#21 24-843081A01 SPRING/RETAINER KIT, (16 Per Kit) (1 required per assembly)
SPRING/RETAINER KIT (16 24-843081A01
 

About Mercury Marine

OEM Part

24-843081A01 - Spr/Ret Kit -16PCS [ More info ]

Add to shopping cart $1,168.95
Available to order: Usually ships within 8 days. Explain stock levels

#22 NSS NOT SOLD SEPARATE, Retainer (1 required per assembly)
#23 840678 SEAT, Spring (16 required per assembly)
SEAT Spring 840678
840678

About Mercury Marine

OEM Part

840678 - Seat - Spring [ More info ]

Add to shopping cart $11.42
Available to order: Usually ships within 8 days. Explain stock levels

#24 26-842755 SEAL, Valve, Intake And Exhaust (16 required per assembly)
SEAL Valve 26-842755
 

About Mercury Marine

OEM Part

26-842755 - Seal - Valve [ More info ]

Add to shopping cart $8.10
10+ in stock. Explain stock levels

#25 15-845669 SHIM, Valve Spring (.015) (AR required per assembly)
SHIM-.015 @2      O
 

About Mercury Marine

OEM Part

SHIM-.015 @2 O [ More info ]
Unavailable
#25 15-77624 SHIM, Valve Spring (.030) (AR required per assembly)
SHIM Valve Spring (.030 15-77624
 

About Mercury Marine

OEM Part

15-77624 - Shim -.030 [ More info ]

Add to shopping cart $3.50
Available to order: Usually ships within 8 days. Explain stock levels

#25 15-77625 SHIM, Valve Spring (.060) (AR required per assembly)
SHIM Valve Spring (.060 15-77625
 

About Mercury Marine

OEM Part

15-77625 - Shim -.060 [ More info ]

Add to shopping cart $2.19
Available to order: Usually ships within 8 days. Explain stock levels

#26 843080 VALVE, Exhaust (8 required per assembly)
VALVE Exhaust 843080
843080

About Mercury Marine

OEM Part

843080 - Exhaust Valve [ More info ]

Add to shopping cart $119.79
Available to order: Usually ships within 8 days. Explain stock levels

#27 821024T VALVE, Intake, Standard - 2.250 Diameter (8 required per assembly)
VALVE Intake 821024T
821024T

About Mercury Marine

OEM Part

821024T - Inlet Valve [ More info ]

Add to shopping cart $82.92
Available to order: Usually ships within 8 days. Explain stock levels

#28 848262 PUSH ROD, (7.550) (8 required per assembly) - Inlet
PUSH ROD (7.550) 848262
848262

About Mercury Marine

OEM Part

848262 - Push Rod [ More info ]

Add to shopping cart $42.67
Available to order: Usually ships within 8 days. Explain stock levels

#28 848264 PUSH ROD, (8.550) (8 required per assembly) - Exhaust
PUSH ROD (8.550) 848264
848264

About Mercury Marine

OEM Part

848264 - Push Rod [ More info ]

Add to shopping cart $42.67
Available to order: Usually ships within 8 days. Explain stock levels

#29 840942 GUIDE, Pushrod (8 required per assembly)
GUIDE Pushrod 840942
840942

About Mercury Marine

OEM Part

840942 - Guide - Push Rod [ More info ]

Add to shopping cart $27.17
Available to order: Usually ships within 8 days. Explain stock levels

#30 845618T ROCKER ARM ASSEMBLY (16 required per assembly)
ROCKER ARM ASSEMBLY 845618T
845618T

About Mercury Marine

OEM Part

845618T - Rocker Arm Assembly [ More info ]

Add to shopping cart $97.57
Available to order: Usually ships within 8 days. Explain stock levels

#31 11-848610 NUT, Rocker Arm Valve (16 required per assembly)
NUT               O - Replaced by 11-8M0043537
11-848610

This part has been superseded.

11-848610 - NUT O [ More info ]
Unavailable
Replaced by 11-8M0043537
NUT-ROCKER        O
 

About Mercury Marine

OEM Part

NUT-ROCKER O [ More info ]
Unavailable
#32 16-95820 STUD, Rocker Arm Valve, Intake (8 required per assembly)
STUD Rocker Arm Valve 16-95820
16-95820

About Mercury Marine

OEM Part

16-95820 - Stud [ More info ]

Add to shopping cart $10.33
1 in stock. Explain stock levels

#32 16-843129 STUD, Rocker Arm Valve, Exhaust (8 required per assembly)
STUD Rocker Arm Valve 16-843129
16-843129

About Mercury Marine

OEM Part

16-843129 - Stud [ More info ]

Add to shopping cart $13.90
Available to order: Usually ships within 8 days. Explain stock levels

#33 10-843918 SCREW, (.438-14 x 4.060) (14 required per assembly)
SCREW             O - Replaced by 10-8M0000482
 

This part has been superseded.

10-843918 - SCREW O [ More info ]
Unavailable
Replaced by 10-8M0000482
SCREW (.438-14 x 4.060) 10-8M0000482
10-8M0000482

About Mercury Marine

OEM Part

10-8M0000482 - Screw [ More info ]

Add to shopping cart $6.00
Available to order: Usually ships within 8 days. Explain stock levels

#33 10-843919 SCREW, (.438-14 x 5.120) (10 required per assembly)
SCREW             O - Replaced by 10-8M0000467
 

This part has been superseded.

10-843919 - SCREW O [ More info ]
Unavailable
Replaced by 10-8M0000467
SCREW (.438-14 x 5.060) 10-8M0000467
10-8M0000467

About Mercury Marine

OEM Part

10-8M0000467 - Screw [ More info ]

Add to shopping cart $11.10
Available to order: Usually ships within 8 days. Explain stock levels

#34 12-841990 WASHER, Special - Black (32 required per assembly)
WASHER Special - Black 12-841990
 

About Mercury Marine

OEM Part

12-841990 - Washer [ More info ]

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

#35 900-843425A04 CYLINDER HEAD ASSEMBLY (1 required per assembly) - Starboard
HEAD ASY-CYL-STBD O - Replaced by 900-843944A04
 

This part has been superseded.

843425A04 - HEAD ASY-CYL-STBD O [ More info ]
Unavailable
Replaced by 900-843944A04
CYLINDER HEAD ASSEMBLY 900-843944A04
 

About Mercury Marine

OEM Part

900-843944A04 - Cylinder Head Assembly - Stbd [ More info ]

Add to shopping cart $1,991.86
Available to order: Usually ships within 8 days. Explain stock levels

#35 900-843425A05 CYLINDER HEAD ASSEMBLY (1 required per assembly) - Port
HEAD ASY-CYL-PORT O - Replaced by 900-843944A05
 

This part has been superseded.

900-843425A05 - HEAD ASY-CYL-PORT O [ More info ]
Unavailable
Replaced by 900-843944A05
CYLINDER HEAD ASSEMBLY 900-843944A05
 

About Mercury Marine

OEM Part

900-843944A05 - Cylinder Head Assembly - Port [ More info ]

Add to shopping cart $1,991.86
Available to order: Usually ships within 8 days. Explain stock levels

#36 10-843917 SCREW, (.438-14 x 2.060) (8 required per assembly)
SCREW             O - Replaced by 10-8M0000463
 

This part has been superseded.

10-843917 - SCREW O [ More info ]
Unavailable
Replaced by 10-8M0000463
SCREW (.438-14 x 2.060) 10-8M0000463
10-8M0000463

About Mercury Marine

OEM Part

10-8M0000463 - Screw [ More info ]

Add to shopping cart $10.10
5 in stock. Explain stock levels

#37 27-811546A03 GASKET KIT, Cylinder Head (2 required per assembly)
GASKET KIT        O - Replaced by 27-811546A04
27-811546A03

This part has been superseded.

27-811546A03 - GASKET KIT O [ More info ]
Unavailable
Replaced by 27-811546A04
GASKET KIT Cylinder Hea 27-811546A04
27-811546A04

About Mercury Marine

OEM Part

27-811546A04 - Gasket Kit [ More info ]

Add to shopping cart $195.33
Available to order: Usually ships within 8 days. Explain stock levels

#38 17-843931 PIN, Dowel, Cylinder Head (4 required per assembly)
PIN Dowel 17-843931
 

About Mercury Marine

OEM Part

17-843931 - Pin -Dowel [ More info ]

Add to shopping cart $9.20
Available to order: Usually ships within 8 days. Explain stock levels

#39 54-843142 J CLIP (1 required per assembly)
J CLIP 54-843142
 

About Mercury Marine

OEM Part

54-843142 - J Clip [ More info ]

Add to shopping cart $3.60
Available to order: Usually ships within 8 days. Explain stock levels

#40 12-45176 WASHER, (.453 x .812 x .105) Stainless Steel (1 required per assembly)
WASHER (.453 x .812 x . 12-45176
12-45176

About Mercury Marine

OEM Part

12-45176 - Washer - Priced Individually [ More info ]

Add to shopping cart $1.10
10+ in stock. Explain stock levels

Washer
18-4858-9

About Sierra Marine

OEM Match

18-4858-9 - Washer, 12-45176, 10PK [ More info ]

Add to shopping cart $27.22 $17.96
8 in stock. Explain stock levels

#41 10-99204 SCREW, (.437-14 x 1.00) Stainless Steel (1 required per assembly)
SCREW (.437-14 x 1.00) 10-99204
10-99204

About Mercury Marine

OEM Part

10-99204 - Screw [ More info ]

Add to shopping cart $3.70
1 in stock. Explain stock levels

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

This part has been superseded.

27-843073A03 - GASKET/SEAL SET 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 $951.21
Available to order: Usually ships within 8 days. Explain stock levels

#- 841178A 1 PARTIAL ENGINE ASSEMBLY (1 required per assembly)
PARTIAL ENGINE ASSEMBLY 841178A 1
 

About Mercury Marine

OEM Part

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

Add to shopping cart $17,186.38
Available to order: Usually ships within 8 days. Explain stock levels