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Parts for MerCruiser Race Engine and Drive 525 EFI Engine Components (Water Pump & Front Cover)

Engine Diagram

Ref. No. Part No. Description Manufacturer List Price Your Price Order
#1 57-863876 2 BELT, Serpentine (1 required per assembly) - Design I - Belt Center Distance 992.5 mm SN# 0M900146 THRU 0M951500
BELT-SERPENTINE   O - Replaced by 57-865615002  
57-863876 2This part has been superseded. BELT-SERPENTINE O - Replaced by 57-865615002
(more info)
    UnavailableUnavailable Parts
BELT-SERP-2285 MM O - Replaced by 57-865615Q02 57-865615002
57-865615002This part has been superseded. BELT-SERP-2285 MM O - Replaced by 57-865615Q02
(more info)
    UnavailableUnavailable Parts
BELT 57-865615Q02 57-865615Q02
57-865615Q02OEM Part 57-865615Q02 - Belt (more info) About Mercury Marine $75.60 $64.73 Add to shopping cart
Available to order:
Usually ships
within 8 days
#1 57-865615012 BELT, Serpentine (1 required per assembly) - Design II - Belt Center Distance 983.0 mm SN# 0M953031 THRU 0M953619
BELT-SERPENTINE   O - Replaced by 57-865615Q12  
57-865615012This part has been superseded. BELT-SERPENTINE O - Replaced by 57-865615Q12
(more info)
    UnavailableUnavailable Parts
BELT Serpentine ( 57-865615Q12 57-865615Q12
57-865615Q12OEM Part 57-865615Q12 - Serpentine Belt (more info) About Mercury Marine $86.66 $86.66 Add to shopping cart
Available to order:
Usually ships
within 8 days
#2 10-849377 SCREW, (.312-24 x .750) Stainless Steel (4 required per assembly)
SCREW (.312-24 x 10-849377 10-849377
10-849377OEM Part 10-849377 - Screw (more info) About Mercury Marine $10.80 $10.80 Add to shopping cart
Available to order:
Usually ships
within 8 days
#3 12-70132 WASHER, (.323 x .563 x .063) Stainless Steel (4 required per assembly)
WASHER @5         O - Replaced by 12-8M0042642  
12-70132This part has been superseded. WASHER @5 O - Replaced by 12-8M0042642
(more info)
    UnavailableUnavailable Parts
WASHER (.323 x .5 12-8M0042642 12-8M0042642
12-8M0042642OEM Part 12-8M0042642 - Washer - Priced Individually (more info) About Mercury Marine $1.40 $1.40 Add to shopping cart
5 in stock. Explain stock levels
#4 842444T PULLEY, Circulating Water Pump - Blue (1 required per assembly)
PULLEY (BLUE)     O NLA  
842444T PULLEY (BLUE) O NLA
(more info)
    UnavailableUnavailable Parts
#5 811573A03 PUMP ASSEMBLY, Circulating Water (1 required per assembly)
PUMP ASSY-WATER   O - Replaced by -811573A04  
811573A03This part has been superseded. PUMP ASSY-WATER O - Replaced by -811573A04
(more info)
    UnavailableUnavailable Parts
PUMP ASSEMBLY Cir 811573A04 811573A04
811573A04OEM Part 811573A04 - Water Pump Assembly (more info) About Mercury Marine $424.17 $424.17 Add to shopping cart
Available to order:
Usually ships
within 8 days
#6 27-49110 GASKET, Circulating Water Pump Mount (2 required per assembly)
GASKET Circulatin 27-49110 27-49110
27-49110OEM Part 27-49110 - Gasket (more info) About Mercury Marine $2.70 $2.70 Add to shopping cart
8 in stock. Explain stock levels
Gasket (2/pkg) 18-0903
18-0903OEM Match 18-0903 - Gasket, 27-49110 (more info)
Replaces OEM #3853361
About Sierra Marine $2.99 $1.76 Add to shopping cart
Available to order:
Usually ships
within 8 days
#7 22-806242 CONNECTOR, Hose (1 required per assembly)
CONNECTOR 22-806242 22-806242
22-806242OEM Part 22-806242 - Connector (more info) About Mercury Marine $38.08 $38.08 Add to shopping cart
Available to order:
Usually ships
within 8 days
#8 10-842787 SCREW, (.375-16 x 2.00) Stainless Steel (3 required per assembly)
SCREW (.375-16 x 10-842787 10-842787
10-842787OEM Part 10-842787 - Screw (more info) About Mercury Marine $5.54 $5.54 Add to shopping cart
Available to order:
Usually ships
within 8 days
#10 22-845174 PLUG, (.500-14 x .610) Brass (1 required per assembly)
PLUG (.500-14 x . 22-845174  
22-845174OEM Part 22-845174 - Plug (more info) About Mercury Marine $5.80 $5.80 Add to shopping cart
Available to order:
Usually ships
within 8 days
#11 27-843134 GASKET, Intake Manifold Mount (2 required per assembly)
GASKET            O - Replaced by 27-843073  
27-843134This part has been superseded. GASKET O - Replaced by 27-843073
(more info)
    UnavailableUnavailable Parts
GASKET Intake Man 27-843073 27-843073
27-843073OEM Part 27-843073 - Gasket - Priced Individually (more info) About Mercury Marine $65.92 $65.92 Add to shopping cart
Available to order:
Usually ships
within 8 days
#12 816073 SHIELD, Oil Intake, Heat (1 required per assembly)
SHIELD            O - Replaced by -845756  
816073This part has been superseded. SHIELD O - Replaced by -845756
(more info)
    UnavailableUnavailable Parts
845756T 845756  
845756OEM Part 845756 - Shield (more info) About Mercury Marine $52.24 $52.24 Add to shopping cart
4 in stock. Explain stock levels
SHEILD Oil Intake 845756T  
845756TOEM Part 845756T - Shield (more info) About Mercury Marine $88.25 $88.25 Add to shopping cart
Available to order:
Usually ships
within 8 days
#13 54-78945 J CLAMP, Harness Support (1 required per assembly)
J CLAMP 54-78945  
54-78945OEM Part 54-78945 - J Clamp (more info) About Mercury Marine $3.60 $3.60 Add to shopping cart
Available to order:
Usually ships
within 8 days
#14 807211 VALVE, Relief, Oil By Pass - 30 PSI (1 required per assembly)
VALVE Relief 807211 807211
807211OEM Part 807211 - Relief Valve (more info) About Mercury Marine $18.25 $18.25 Add to shopping cart
Available to order:
Usually ships
within 8 days
#15 845610T COVER ASSEMBLY, Cylinder Front (1 required per assembly)
COVER ASSEMBLY Cy 845610T 845610T
845610TOEM Part 845610T - Timing Cover Assembly (more info) About Mercury Marine $291.67 $291.67 Add to shopping cart
Available to order:
Usually ships
within 8 days
#16 27-850456 GASKET, Front Cover Mount (1 required per assembly)
GASKET Front Cove 27-850456 27-850456
27-850456OEM Part 27-850456 - Gasket (more info) About Mercury Marine $17.92 $17.92 Add to shopping cart
2 in stock. Explain stock levels
#17 26-821947 1 SEAL, Oil (1 required per assembly)
SEAL 26-821947  1 26-821947  1
26-821947 1OEM Part 26-821947 1 - Seal (more info) About Mercury Marine $32.30 $27.66 Add to shopping cart
Available to order:
Usually ships
within 8 days
#18 10-F2030 SCREW, (.250-20 x 1.250) Stainless Steel (6 required per assembly)
SCREW (.250-20 x 10-F2030 10-F2030
10-F2030OEM Part 10-F2030 - Screw -ss (more info) About Mercury Marine $2.30 $2.30 Add to shopping cart
10+ in stock. Explain stock levels
#19 845625T03 DAMPER (1 required per assembly)
DAMPER 845625T03  
845625T03OEM Part 845625T03 - Damper (more info) About Mercury Marine $407.47 $407.47 Add to shopping cart
Available to order:
Usually ships
within 8 days
#20 17-58997 PIN, Roll (.164 x .750) (1 required per assembly)
PIN Roll (.164 x 17-58997  
17-58997OEM Part 17-58997 - Pin -roll (more info) About Mercury Marine $3.60 $3.60 Add to shopping cart
9 in stock. Explain stock levels
#21 841225001 WHEEL, Sensor Target (1 required per assembly)
TARGET-SENSOR     O - Replaced by -8M0050961  
841225001This part has been superseded. TARGET-SENSOR O - Replaced by -8M0050961
(more info)
    UnavailableUnavailable Parts
TARGET-SENSOR 8M0050961  
8M0050961OEM Part 8M0050961 - TARGET-Sensor (more info) About Mercury Marine $514.18 $514.18 Add to shopping cart
Available to order:
Usually ships
within 8 days
#22 843119T PULLEY, Blue (1 required per assembly)
PULLEY Blue 843119T  
843119TOEM Part 843119T - Pulley (Blue) (more info) About Mercury Marine $185.17 $185.17 Add to shopping cart
Available to order:
Usually ships
within 8 days
#23 12-856774 WASHER, (.406 x .750 x .105) Stainless Steel (3 required per assembly)
WASHER (.406 x .7 12-856774  
12-856774OEM Part 12-856774 - Washer (more info) About Mercury Marine $1.50 $1.50 Add to shopping cart
1 in stock. Explain stock levels
#24 10-843147 1 SCREW, (.375-16 x 1.750) (3 required per assembly)
SCREW (.375-16 x 10-843147  1 10-843147  1
10-843147 1OEM Part 10-843147 1 - Screw (more info) About Mercury Marine $6.95 $6.95 Add to shopping cart
Available to order:
Usually ships
within 8 days
#25 10-811559 SCREW, (.500-20 x 2.500) (1 required per assembly)
SCREW             O - Replaced by 10-845627  
10-811559This part has been superseded. SCREW O - Replaced by 10-845627
(more info)
    UnavailableUnavailable Parts
SCREW (.500-20 x 10-845627 10-845627
10-845627OEM Part 10-845627 - Screw (more info) About Mercury Marine $33.42 $33.42 Add to shopping cart
Available to order:
Usually ships
within 8 days
#26 12-841390 1 WASHER, (.520 x 2.063 x .280) (1 required per assembly)
WASHER (.520 x 2. 12-841390  1  
12-841390 1OEM Part 12-841390 1 - Washer (more info) About Mercury Marine $4.44 $4.44 Add to shopping cart
Available to order:
Usually ships
within 8 days
#27 10-40105 16 SCREW, (M5 x 16) Stainless Steel (2 required per assembly)
SCREW (M5 x 16) S 10-40105 16 10-40105 16
10-40105 16OEM Part 10-40105 16 - Screw (more info) About Mercury Marine $1.40 $1.40 Add to shopping cart
Available to order:
Usually ships
within 8 days
#28 828358 2 SENSOR, Crankshaft (1 required per assembly)
8M0030022 828358  2  
828358 2OEM Part 828358 2 - Sensor Assembly (more info) About Mercury Marine $72.53 $72.53 Add to shopping cart
3 in stock. Explain stock levels
SENSOR ASSY       O - Replaced by -8M0082988  
8M0030022This part has been superseded. SENSOR ASSY O - Replaced by -8M0082988
(more info)
    UnavailableUnavailable Parts
SENSOR Crankshaft 8M0082988 8M0082988
8M0082988OEM Part 8M0082988 - Sensor Assembly (more info) About Mercury Marine $78.25 $78.25 Add to shopping cart
Available to order:
Usually ships
within 8 days
#29 841224 1 BRACKET, Sensor Mount (1 required per assembly)
BRACKET 841224  1  
841224 1OEM Part 841224 1 - Bracket (more info) About Mercury Marine $98.62 $98.62 Add to shopping cart
Available to order:
Usually ships
within 8 days
#30 16-59579 STUD, (.437-14/.437-20 x 2.812) (1 required per assembly)
STUD (.437-14/.43 16-59579 16-59579
16-59579OEM Part 16-59579 - Stud (more info) About Mercury Marine $5.90 $5.90 Add to shopping cart
10+ in stock. Explain stock levels
#31 12-45176 WASHER, (.453 x .812 x .105) Stainless Steel (1 required per assembly)
WASHER (.453 x .8 12-45176 12-45176
12-45176OEM Part 12-45176 - Washer - Priced Individually (more info) About Mercury Marine $1.10 $1.10 Add to shopping cart
10+ in stock. Explain stock levels
Washer 18-4858-9
18-4858-9OEM Match 18-4858-9 - Washer, 12-45176, 10PK (more info) About Sierra Marine $27.22 $17.96 Add to shopping cart
2 in stock. Explain stock levels
#32 11-859135 NUT, (.437-20) Brass/Nickel Plated (1 required per assembly)
NUT (.437-20) Bra 11-859135 11-859135
11-859135OEM Part 11-859135 - Nut - Priced Individually (more info) About Mercury Marine $4.20 $4.20 Add to shopping cart
8 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  
27-843073A03This part has been superseded. GASKET/SEAL SET O - Replaced by 27-843073A06
(more info)
    UnavailableUnavailable Parts
GASKET/SEAL SET E 27-843073A06 27-843073A06
27-843073A06OEM Part 27-843073A06 - Gasket/Seal Set (more info) About Mercury Marine $928.01 $928.01 Add to shopping cart
Available to order:
Usually ships
within 8 days
#- 841178A 1 PARTIAL ENGINE ASSEMBLY (1 required per assembly)
PARTIAL ENGINE AS 841178A 1  
841178A 1OEM Part 841178A 1 - Partial - 525 Efi (more info) About Mercury Marine $16,767.20 $16,767.20 Add to shopping cart
Available to order:
Usually ships
within 8 days