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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 57-865615012 BELT, Serpentine (2266 mm) (1 required per assembly)
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57-865615012This part has been superseded.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12-70132This part has been superseded.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811573A03This part has been superseded.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 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
#7 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
#8 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
#9 10-822168 SCREW, (.375-16 x 1.750) Stainless Steel (1 required per assembly)
SCREW (.375-16 x 10-822168 10-822168
10-822168OEM Part 10-822168 - Screw (more info) About Mercury Marine $2.99 $2.99 Add to shopping cart
Available to order:
Usually ships
within 8 days
#9 10-842787 SCREW, (.375-16 x 2.00) Stainless Steel (2 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 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
#11 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
#12 27-843073 GASKET, Intake Manifold Mount (2 required per assembly)
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
#13 816073 SHIELD, Oil Intake (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
#14 807211 VALVE, Relief (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 842250T02 COVER ASSEMBLY, Cylinder Front - Black (1 required per assembly)
COVER ASSEMBLY Cy 842250T02  
842250T02OEM Part 842250T02 - Timing Cover Assembly (more info) About Mercury Marine $238.75 $238.75 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 845625004 DAMPER (1 required per assembly)
DAMPER            O - Replaced by -8M8021041  
845625004This part has been superseded. DAMPER O - Replaced by -8M8021041
(more info)
    UnavailableUnavailable Parts
DAMPER 8M8021041  
8M8021041OEM Part 8M8021041 - Damper (more info) About Mercury Marine $582.00 $582.00 Add to shopping cart
Available to order:
Usually ships
within 8 days
#20 841957T PULLEY, Crankshaft - Blue (1 required per assembly)
ORD 8M0064633     O NLA  
841957T ORD 8M0064633 O NLA
(more info)
    UnavailableUnavailable Parts
PULLEY Crankshaft 8M0064633  
8M0064633OEM Part 8M0064633 - Pulley-Crankshaft (more info) About Mercury Marine $220.85 $220.85 Add to shopping cart
Available to order:
Usually ships
within 8 days
#22 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
#23 10-845627 SCREW, (.500-20 x 2.500) (1 required per assembly)
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
#24 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
#25 864297001 SENSOR ASSEMBLY, Crankshaft Position (1 required per assembly)
SENSOR-CRANK POS  O - Replaced by -864297T01  
864297001This part has been superseded. SENSOR-CRANK POS O - Replaced by -864297T01
(more info)
    UnavailableUnavailable Parts
SENSOR ASSEMBLY 864297T01 864297T01
864297T01OEM Part 864297T01 - Crank Position Sensor (more info) About Mercury Marine $214.42 $214.42 Add to shopping cart
Available to order:
Usually ships
within 8 days
CRANKSHAFT SENSOR 18-7556
18-7556OEM Match 18-7556 - Crankshaft Sensor 864297001 (more info) About Sierra Marine $101.66 $84.89 Add to shopping cart
6 in stock. Explain stock levels
#26 25-885192 O-RING (1 required per assembly)
O-RING 25-885192  
25-885192OEM Part 25-885192 - O-Ring (more info) About Mercury Marine $35.80 $30.66 Add to shopping cart
Available to order:
Usually ships
within 8 days
#27 10-41508 SCREW, (.250-20 x .500) Stainless Steel (1 required per assembly)
SCREW (.250-20 x 10-41508 10-41508
10-41508OEM Part 10-41508 - Screw (more info) About Mercury Marine $2.60 $2.60 Add to shopping cart
Available to order:
Usually ships
within 8 days
#28 10-90192 1 SCREW, (.250-20 x .750) Stainless Steel With Nylon Patch (1 required per assembly)
SCREW (.250-20 x 10-90192  1 10-90192  1
10-90192 1OEM Part 10-90192 1 - Screw (more info) About Mercury Marine $1.20 $1.20 Add to shopping cart
Available to order:
Usually ships
within 8 days
#29 880609001 SENSOR ASSEMBLY, Cam Position (1 required per assembly)
SENSOR ASSY       O - Replaced by -8M0011986  
880609001This part has been superseded. SENSOR ASSY O - Replaced by -8M0011986
(more info)
    UnavailableUnavailable Parts
SENSOR ASSEMBLY 8M0011986  
8M0011986OEM Part 8M0011986 - Sensor Assembly (more info) About Mercury Marine $89.42 $89.42 Add to shopping cart
Available to order:
Usually ships
within 8 days
#30 NSS NOT SOLD SEPARATE, O-Ring (1 required per assembly)
#- 27-843073A06 GASKET/SEAL SET, Engine Overhaul (1 required per assembly) - NOTE: See Gasket/Seal Set - Engine Overhaul Section For Complete Parts Listing
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
#- 841178A05 PARTIAL ENGINE ASSEMBLY (1 required per assembly)
PARTIAL ENGINE AS 841178A05  
841178A05OEM Part 841178A05 - 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