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Parts for MerCruiser Race Engine and Drive 525 EFI Closed Cooling System Components

Engine Diagram

Ref. No. Part No. Description Manufacturer List Price Your Price Order
#1 841065T01 RESERVOIR ASSEMBLY, Coolant (1 required per assembly)
RESERVOIR ASSEMBL 841065T01  
841065T01OEM Part 841065T01 - Reservoir Assembly (more info) About Mercury Marine $384.00 $384.00 Add to shopping cart
Available to order:
Usually ships
within 8 days
#2 862863 CAP, Coolant Reservoir (1 required per assembly)
CAP Coolant Reser 862863 862863
862863OEM Part 862863 - Reservoir Cap (more info) About Mercury Marine $17.00 $14.56 Add to shopping cart
Available to order:
Usually ships
within 8 days
#3 37-843133 DECAL, Coolant Level (1 required per assembly)
DECAL Coolant Lev 37-843133  
37-843133OEM Part 37-843133 - Decal (more info) About Mercury Marine $3.95 $3.95 Add to shopping cart
Available to order:
Usually ships
within 8 days
#4 10-F430732 SCREW, (.312-18 x 1.250) Stainless Steel (3 required per assembly)
SCREW (.312-18 x 10-F430732  
10-F430732OEM Part 10-F430732 - Screw -ss (more info) About Mercury Marine $3.30 $3.30 Add to shopping cart
10+ in stock. Explain stock levels
#5 12-817274 WASHER, (.344 x 1.00 x .063) Stainless Steel (3 required per assembly)
WASHER (.344 x 1. 12-817274  
12-817274OEM Part 12-817274 - Washer (more info) About Mercury Marine $1.10 $1.10 Add to shopping cart
Available to order:
Usually ships
within 8 days
#6 25-855362001 GROMMET (3 required per assembly)
GROMMET 25-855362001  
25-855362001OEM Part 25-855362001 - Grommet (more info) About Mercury Marine $2.10 $2.10 Add to shopping cart
Available to order:
Usually ships
within 8 days
#7 23-855364 BUSHING (3 required per assembly)
BUSHING 23-855364  
23-855364OEM Part 23-855364 - Bushing (more info) About Mercury Marine $4.20 $4.20 Add to shopping cart
3 in stock. Explain stock levels
#8 54-815504210 CLAMP, Worm Gear (1 required per assembly)
CLAMP Worm Gear 54-815504210  
54-815504210OEM Part 54-815504210 - Clamp - Priced Individually (more info) About Mercury Marine $2.90 $1.96 Add to shopping cart
10+ in stock. Explain stock levels
#9 32-841207 HOSE, Molded, Reservoir To Circular Pump (1 required per assembly)
HOSE Molded 32-841207  
32-841207OEM Part 32-841207 - Molded Hose (more info) About Mercury Marine $32.30 $32.30 Add to shopping cart
Available to order:
Usually ships
within 8 days
#10 54-18076 3 CLAMP, Worm Gear (1 required per assembly)
CLAMP Worm Gear 54-18076  3  
54-18076 3OEM Part 54-18076 3 - Clamp (more info) About Mercury Marine $9.40 $9.40 Add to shopping cart
Available to order:
Usually ships
within 8 days
#11 54-815504406 CLAMP, Worm Gear (2 required per assembly)
CLAMP Worm Gear 54-815504406  
54-815504406OEM Part 54-815504406 - Clamp (more info) About Mercury Marine $1.90 $1.90 Add to shopping cart
Available to order:
Usually ships
within 8 days
#12 32-842455 HOSE, Molded, Heat Exchanger To Reservoir (1 required per assembly)
HOSE Molded 32-842455 32-842455
32-842455OEM Part 32-842455 - Molded Hose (more info) About Mercury Marine $33.93 $33.93 Add to shopping cart
Available to order:
Usually ships
within 8 days
#13 22-62910 1 FITTING, Elbow - 90 Degree (.125-27) (1 required per assembly)
FITTING Elbow - 9 22-62910  1 22-62910  1
22-62910 1OEM Part 22-62910 1 - Elbow (more info) About Mercury Marine $9.50 $9.50 Add to shopping cart
2 in stock. Explain stock levels
#14 841059T02 EXCHANGER ASSEMBLY, Heat (1 required per assembly)
EXCHANGER ASSY    O - Replaced by -841059T03  
841059T02This part has been superseded. EXCHANGER ASSY O - Replaced by -841059T03
(more info)
    UnavailableUnavailable Parts
EXCHANGER ASSY 841059T03  
841059T03OEM Part 841059T03 - Exchanger Assembly (more info) About Mercury Marine $1,076.25 $1,076.25 Add to shopping cart
Available to order:
Usually ships
within 8 days
#15 27-803644 GASKET, Heat Exchanger End (2 required per assembly)
GASKET            O - Replaced by 27-8M0036987  
27-803644This part has been superseded. GASKET O - Replaced by 27-8M0036987
(more info)
    UnavailableUnavailable Parts
GASKET 27-8M0036987 27-8M0036987
27-8M0036987OEM Part 27-8M0036987 - Gasket (more info) About Mercury Marine $17.20 $14.73 Add to shopping cart
2 in stock. Explain stock levels
#16 25-814878 O-RING, Special (2 required per assembly)
O RING            O - Replaced by 25-8M0039163  
25-814878This part has been superseded. O RING O - Replaced by 25-8M0039163
(more info)
    UnavailableUnavailable Parts
O-RING (3/8 x 1/8 25-8M0039163  
25-8M0039163OEM Part 25-8M0039163 - O-Ring (more info) About Mercury Marine $5.90 $5.90 Add to shopping cart
Available to order:
Usually ships
within 8 days
#17 814875 COVER, Heat Exchanger End (2 required per assembly)
COVER-END         O - Replaced by -8M0036623 814875
814875This part has been superseded. COVER-END O - Replaced by -8M0036623
(more info)
    UnavailableUnavailable Parts
END CAP (4 Inch) 8M0036623  
8M0036623OEM Part 8M0036623 - Cap -end (more info) About Mercury Marine $69.92 $69.92 Add to shopping cart
Available to order:
Usually ships
within 8 days
#18 10-814877 BOLT (2 required per assembly)
BOLT 10-814877 10-814877
10-814877OEM Part 10-814877 - Bolt (more info) About Mercury Marine $8.80 $8.80 Add to shopping cart
Available to order:
Usually ships
within 8 days
#19 10-841222 SCREW, (.312-18 x 1.250) (2 required per assembly)
SCREW (.312-18 x 10-841222 10-841222
10-841222OEM Part 10-841222 - Screw (more info) About Mercury Marine $2.73 $2.73 Add to shopping cart
Available to order:
Usually ships
within 8 days
#20 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
#21 842450 PLATE (2 required per assembly)
PLATE CLAMP 842450 842450
842450OEM Part 842450 - Plate Clamp (more info) About Mercury Marine $61.23 $61.23 Add to shopping cart
Available to order:
Usually ships
within 8 days
#22 25-20295 QUAD RING (1.725 x .210) (2 required per assembly)
QUAD RING 1.725 x 25-20295  
25-20295OEM Part 25-20295 - Quad Ring (more info) About Mercury Marine $5.50 $5.50 Add to shopping cart
Available to order:
Usually ships
within 8 days
#23 842448 PLATE (1 required per assembly)
PLATE 842448 842448
842448OEM Part 842448 - Plate (more info) About Mercury Marine $59.93 $59.93 Add to shopping cart
Available to order:
Usually ships
within 8 days
#24 25-807134 1 SEAL, Thermostat (1 required per assembly)
SEAL 25-807134  1 25-807134  1
25-807134 1OEM Part 25-807134 1 - Thermostat Seal (more info) About Mercury Marine $9.70 $9.70 Add to shopping cart
Available to order:
Usually ships
within 8 days
#25 863358T THERMOSTAT, 71°C (160°F) (1 required per assembly)
THERMOSTAT-160DEG O - Replaced by -8M0076464 863358T
863358TThis part has been superseded. THERMOSTAT-160DEG O - Replaced by -8M0076464
(more info)
    UnavailableUnavailable Parts
THERMOSTAT 71 C ( 8M0076464 8M0076464
8M0076464OEM Part 8M0076464 - Thermostat -160 Degree (more info) About Mercury Marine $21.50 $21.50 Add to shopping cart
Available to order:
Usually ships
within 8 days
THERMOSTAT 18-43017
18-43017OEM Match 18-43017 - Thermostat S985009, 863358, 863358T (more info) About Sierra Marine $20.99 $17.58 Add to shopping cart
1 in stock. Explain stock levels
#26 25-30529 O-RING, (1.925 x .103) (2 required per assembly)
O-RING (1.925 x . 25-30529 25-30529
25-30529OEM Part 25-30529 - O-Ring - Priced Individually (more info) About Mercury Marine $2.30 $2.30 Add to shopping cart
Available to order:
Usually ships
within 8 days
O-Ring 18-7171-9
18-7171-9OEM Match 18-7171-9 - O-Ring (PK5) 25-30529 (more info) About Sierra Marine $14.95 $8.55 Add to shopping cart
1 in stock. Explain stock levels
#27 12-45176 WASHER, (.453 x .812 x .105) Stainless Steel (6 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
#28 10-825427 SCREW, (.437-14 x 1.250) Stainless Steel (4 required per assembly)
SCREW (.437-14 x 10-825427 10-825427
10-825427OEM Part 10-825427 - Screw (more info) About Mercury Marine $4.70 $4.70 Add to shopping cart
10+ in stock. Explain stock levels
#29 10-841118 SCREW, (.437-14 x 5.50) Stainless Steel (1 required per assembly)
SCREW (.437-14 x 10-841118 10-841118
10-841118OEM Part 10-841118 - Screw (more info) About Mercury Marine $10.13 $10.13 Add to shopping cart
Available to order:
Usually ships
within 8 days
#30 841058T01 CROSSOVER, Black (1 required per assembly)
CROSSOVER Black 841058T01  
841058T01OEM Part 841058T01 - Crossover (more info) About Mercury Marine $788.11 $788.11 Add to shopping cart
Available to order:
Usually ships
within 8 days
#31 10-841114 SCREW, (.437-14 x 4.500) Stainless Steel (1 required per assembly)
SCREW (.437-14 x 10-841114 10-841114
10-841114OEM Part 10-841114 - Screw (more info) About Mercury Marine $4.85 $4.85 Add to shopping cart
Available to order:
Usually ships
within 8 days
#32 22-36373 PLUG, (.375-18) Hex - Steel (2 required per assembly)
PLUG (.375-18) He 22-36373  
22-36373OEM Part 22-36373 - Plug (more info) About Mercury Marine $4.10 $4.10 Add to shopping cart
4 in stock. Explain stock levels
#33 843155001 FOAM STRIP (6.500 Inches) (2 required per assembly)
FOAM STRIP 843155001 843155001
843155001OEM Part 843155001 - Foam STRIP-6.5 In (more info) About Mercury Marine $5.50 $5.50 Add to shopping cart
Available to order:
Usually ships
within 8 days
#34 885342002 SENSOR ASSEMBLY, Water Temperature (1 required per assembly)
SENSOR ASSEMBLY 885342002 885342002
885342002OEM Part 885342002 - Temperature Sensor Assembly (more info) About Mercury Marine $31.58 $31.58 Add to shopping cart
Available to order:
Usually ships
within 8 days
#35 25-896699 O-RING, (1.78 mm x .08 mm) (1 required per assembly)
O-RING (1.78 mm x 25-896699  
25-896699OEM Part 25-896699 - O-Ring (more info) About Mercury Marine $7.70 $7.70 Add to shopping cart
Available to order:
Usually ships
within 8 days
#36 10-841221 SCREW, (.312-18 x 1.00) Stainless Steel (2 required per assembly)
SCREW (.312-18 x 10-841221 10-841221
10-841221OEM Part 10-841221 - Screw (more info) About Mercury Marine $2.67 $2.67 Add to shopping cart
Available to order:
Usually ships
within 8 days
#- 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