Parts for MerCruiser Race Engine and Drive 525 EFI Engine Components (Cylinder Head)
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Reference numbers in this diagram can be found in a light blue row below — scroll down to order.
# | 841178A05 | PARTIAL ENGINE ASSEMBLY (1 required per assembly) |
841178A05 - Partial Engine Assembly [ More info ] Unavailable |
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# | 27-843073A06 | GASKET/SEAL SET, Engine Overhaul (1 required per assembly) - NOTE: See Gasket/Seal Set - Engine Overhaul Section For Complete Parts Listing |
#1 | 845708A 7 | COVER ASSEMBLY, Rocker Valve - Blue, Port (1 required per assembly) - NOTE: For Non Standard Paint Color - See Paint Color Chart For PPG Number |
845708A 7 - 845708A 7 - COVER ASSEMBLY Ro [ More info ] Unavailable Replaced by -8M0050913 |
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8M0050913 - Cover Assembly - Port [ More info ] Unavailable |
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#2 | 845708A 9 | COVER ASSEMBLY, Rocker Valve - Blue, Starboard (1 required per assembly) - NOTE: For Non Standard Paint Color - See Paint Color Chart For PPG Number |
845708A 9 - 845708A 9 - COVER ASSEMBLY Ro [ More info ] Unavailable Replaced by -8M0052328 |
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#3 | 27-811588 | GASKET, Rocker Cover (2 required per assembly) |
#4 | 10-39349 | SCREW, (.312-18 x .750) Stainless Steel (2 required per assembly) |
#5 | 12-70132 | WASHER, (.323 x .563 x .063) Stainless Steel (2 required per assembly) |
12-70132 - 12-70132 - WASHER (.323 x .5 [ More info ] Unavailable Replaced by 12-8M0042642 |
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#6 | 25-26802 | O-RING, (.424 x .103) (2 required per assembly) |
#7 | 25-811553 | GROMMET (2 required per assembly) |
#8 | 97850 | ELBOW, 90 Degree, Breather (2 required per assembly) |
97850 - Elbow-Breather [ More info ] Unavailable |
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#9 | 54-816311T | TIE STRAP, (8.00 Inches) (2 required per assembly) |
54-816311T - Tie Strap, 8 Inches, Priced Individually [ More info ] |
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#10 | 54-858951 | J CLIP (2 required per assembly) |
#11 | 37-849950 | DECAL, Oil Fill Cap (2 required per assembly) |
#12 | 36-845753T 1 | CAP, Oil Fill (2 required per assembly) |
#13 | 54-42553 | J CLIP (1 required per assembly) |
#14 | 32-15894 31 | TUBING, (20.00 Inches Bulk), Cut 2 Pieces - 8.50 Inches (AR required per assembly) |
32-15894 31 - 32-15894 31 - TUBING (20.00 Inc [ More info ] Unavailable Replaced by 32-8M0086022 |
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#15 | 22-849999 | FITTING, Tee (1 required per assembly) |
#17 | 11-35888 | NUT, (.250-28) Stainless Steel (14 required per assembly) |
18-3722-9 - Lock Nut, 121731, 11-35888, Pack of 5 [ More info ]
$11.99 $6.88 |
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#18 | 12-846673 | WASHER, (.265 x .500 x .060) Stainless Steel (14 required per assembly) |
12-846673 - Washer, (.265 X .500 X .060) Stainless Steel [ More info ] |
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#19 | 16-56766 | STUD, (.250-20/.250-28 x 1.380) (14 required per assembly) |
#20 | 54-15095 | J CLIP (1 required per assembly) |
#21 | 900-843944A04 | CYLINDER HEAD ASSEMBLY, Starboard (1 required per assembly) |
900-843944A04 - CYLINDER HEAD ASS [ More info ] Unavailable |
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#21 | 900-843944A05 | CYLINDER HEAD ASSEMBLY, Port (1 required per assembly) |
900-843944A05 - CYLINDER HEAD ASS [ More info ] Unavailable |
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#22 | 19-47463 | EXPANSION PLUG (2 required per assembly) |
#23 | 10-8M0000463 | SCREW, (.438-14 x 2.060) Black Oxide (8 required per assembly) |
#24 | 12-841990 | WASHER, Special - Black (32 required per assembly) |
#25 | 27-811546A03 | GASKET KIT, Cylinder Head (2 required per assembly) |
27-811546A03 - 27-811546A03 - GASKET KIT Cylind [ More info ] Unavailable Replaced by 27-811546A04 |
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#26 | 17-843931 | PIN, Dowel, Cylinder Head Gasket Locator (4 required per assembly) |
#27 | 10-99204 | SCREW, (.437-14 x 1.00) Stainless Steel (1 required per assembly) |
#28 | 12-45176 | WASHER, (.453 x .812 x .105) Stainless Steel (1 required per assembly) |
#29 | 54-843142 | J CLIP (1 required per assembly) |
#30 | 10-8M0000482 | SCREW, (.438-14 x 4.060) Black Oxide (14 required per assembly) |
#30 | 10-8M0000467 | SCREW, (.438-14 x 5.060) Black Oxide (10 required per assembly) |
#31 | 843080 | VALVE, Exhaust (8 required per assembly) |
#32 | 15-845669 | SHIM, Valve Spring (.015) (AR required per assembly) |
#32 | 15-77624 | SHIM, Valve Spring (.030) (AR required per assembly) |
#32 | 15-77625 | SHIM, Valve Spring (.060) (AR required per assembly) |
#33 | 26-842755 | SEAL, Valve, Intake And Exhaust (16 required per assembly) |
#34 | 840678 | SEAT, Spring (16 required per assembly) |
#35 | 24-843081A01 | SPRING/RETAINER KIT, (16 Per Kit) (1 required per assembly) |
#36 | NSS | NOT SOLD SEPARATE, Retainer (1 required per assembly) |
NSS - NOT SOLD SEPARATE [ More info ] Unavailable |
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#37 | 843140 | LOCK, Valve Stem (32 required per assembly) |
843140 - LOCK-VALVE Note: Priced Individually [ More info ] Unavailable |
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8M0042989 - Lock - Valve - Priced Individually [ More info ] |
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#38 | 821024T | VALVE, Intake, Standard - 2.250 Diameter (8 required per assembly) |
#39 | 848262 | PUSH ROD, (7.550) (8 required per assembly) - Intake |
#39 | 848264 | PUSH ROD, (8.550) (8 required per assembly) - Exhaust |
#40 | 840942 | GUIDE, Pushrod (8 required per assembly) |
#41 | 845618T | ROCKER ARM ASSEMBLY (16 required per assembly) |
#42 | 11-848610 | NUT, Rocker Arm Valve (16 required per assembly) |
11-848610 - 11-848610 - NUT [ More info ] Unavailable Replaced by 11-8M0043537 |
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#43 | 16-95820 | STUD, Rocker Arm Valve (8 required per assembly) - Intake |
#43 | 16-843129 | STUD, Rocker Arm Valve (8 required per assembly) - Exhaust |