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Parts for MerCruiser Race Engine and Drive 525 SC GM 454 V-8 1991-1992 Crankshaft & Pistons & Conn. Rods

Engine Diagram

Ref. No. Part No. Description Manufacturer List Price Your Price Order
#1 798-817114 PISTON ASSEMBLY (STANDARD) (8 required per assembly)
PISTON ASSY       O NLA 798-817114
798-817114 PISTON ASSY O NLA
(more info)
    UnavailableUnavailable Parts
#2 39-67127 RING KIT-Piston (STANDARD) (8 required per assembly)
RING SET Piston - 39-67127 39-67127
39-67127OEM Part 39-67127 - Rings - Standard (more info) About Mercury Marine $47.83 $38.74 Add to shopping cart
10+ in stock. Explain stock levels
Piston Rings Std 18-3940
18-3940OEM Match 18-3940 - Rings, 39-67927 (more info)
Replaces OEM #0328536
About Sierra Marine $52.74 $42.19 Add to shopping cart
5 in stock. Explain stock levels
#1 798-817114A 1 PISTON ASSEMBLY (.030 O.S.) (8 required per assembly)
PISTON ASY-.030OS O - Replaced by 798-817114T 1  
798-817114A 1This part has been superseded. PISTON ASY-.030OS O - Replaced by 798-817114T 1
(more info)
    UnavailableUnavailable Parts
PISTON ASY-.030OS O NLA  
798-817114T 1 PISTON ASY-.030OS O NLA
(more info)
    UnavailableUnavailable Parts
#2 39-848350030 RING KIT-Piston (.030 O.S.) (1 required per assembly)
RING SET 39-848350030 39-848350030
39-848350030OEM Part 39-848350030 - Rings (more info) About Mercury Marine $300.00 $300.00 Add to shopping cart
6 in stock. Explain stock levels
#3 23-818473 BEARING SET (STANDARD) (1 required per assembly)
BRG SET-STD       O - Replaced by 23-818473001 23-818473
23-818473This part has been superseded. BRG SET-STD O - Replaced by 23-818473001
(more info)
    UnavailableUnavailable Parts
BEARING SET-STD 23-818473001 23-818473001
23-818473001OEM Part 23-818473001 - Bearing Set - Std (more info) About Mercury Marine $143.25 $143.25 Add to shopping cart
Available to order:
Usually ships
within 8 days
Std. Main Bearings 18-1315
18-1315OEM Match 18-1315 - Main Bearing, 23-818473 (more info) About Sierra Marine $148.49 $148.49 Add to shopping cart
1 in stock. Explain stock levels
#3 23-818474 BEARING SET (.001 U.S.) (AR required per assembly)
BEARING SET Main 23-818474 23-818474
23-818474OEM Part 23-818474 - Bearing Set - .001 Us (more info) About Mercury Marine $119.33 $119.33 Add to shopping cart
Available to order:
Usually ships
within 8 days
#3 23-818475 BEARING SET (.002 U.S.) (AR required per assembly)
BRG SET-.002 US 23-818475 23-818475
23-818475OEM Part 23-818475 - Bearing Set - .002 Us (more info) About Mercury Marine $158.30 $158.30 Add to shopping cart
1 in stock. Explain stock levels
#3 23-818476 BEARING SET (.010 U.S.) (AR required per assembly)
BRG SET-.010 US   O - Replaced by 23-818476001 23-818476
23-818476This part has been superseded. BRG SET-.010 US O - Replaced by 23-818476001
(more info)
    UnavailableUnavailable Parts
BEARING SET Main 23-818476001 23-818476001
23-818476001OEM Part 23-818476001 - Bearing Set - .010 Us (more info) About Mercury Marine $147.17 $147.17 Add to shopping cart
Available to order:
Usually ships
within 8 days
#3 23-818477 BEARING SET (.020 U.S.) (AR required per assembly)
BEARING SET Main 23-818477 23-818477
23-818477OEM Part 23-818477 - Bearing Set - .020 Us (more info) About Mercury Marine $143.92 $143.92 Add to shopping cart
Available to order:
Usually ships
within 8 days
Main Bearing 18-1314
18-1314OEM Match 18-1314 - .020 Main Bearings - Special Order - No Returns (more info) About Sierra Marine $82.69 Add to shopping cart
In stock - special order item. Explain stock levels
#4 17-35312 PIN-Dowel (.250 Dia.) (1 required per assembly)
PIN-DOWEL         O - Replaced by 17-843378  
17-35312This part has been superseded. PIN-DOWEL O - Replaced by 17-843378
(more info)
    UnavailableUnavailable Parts
PIN Dowel 17-843378  
17-843378OEM Part 17-843378 - Pin -Dowel (more info) About Mercury Marine $10.60 $10.60 Add to shopping cart
1 in stock. Explain stock levels
#5 26-14756 SEAL-Oil (1 required per assembly) (S/N: 0D456000 - 0D725808)
SEAL              O - Replaced by 26-8M0062773 26-14756
26-14756This part has been superseded. SEAL O - Replaced by 26-8M0062773
(more info)
    UnavailableUnavailable Parts
SEAL 26-8M0062773  
268M0062773OEM Part 268M0062773 - Seal (more info) About Mercury Marine $98.83 $98.83 Add to shopping cart
Available to order:
Usually ships
within 8 days
#5 26-811554 SEAL-Oil (1 required per assembly) (S/N: 0D763746 - 0F348963)
SEAL 26-811554 26-811554
26-811554OEM Part 26-811554 - Seal (more info) About Mercury Marine $80.92 $80.92 Add to shopping cart
1 in stock. Explain stock levels
Rear Main Seal, 18-1234
18-1234OEM Match 18-1234 - Seal, 26-811554, 3853528 (more info)
Replaces OEM #3853528
About Sierra Marine $73.99 $58.86 Add to shopping cart
1 in stock. Explain stock levels
#6 230-6540 FLYWHEEL (1 required per assembly) (S/N: 0D456000 - 0D725808)
FLYWHEEL          O - Replaced by 200-8M0084209  
230-6540This part has been superseded. FLYWHEEL O - Replaced by 200-8M0084209
(more info)
    UnavailableUnavailable Parts
FLYWHEEL 200-8M0084209  
2008M0084209OEM Part 2008M0084209 - Flywheel (more info) About Mercury Marine $550.00 $550.00 Add to shopping cart
Available to order:
Usually ships
within 8 days
#6 230-811561 FLYWHEEL (1 required per assembly) (S/N: 0D763746 - 0F348963)
FLYWHEEL          O - Replaced by 230-843374T 1  
230-811561This part has been superseded. FLYWHEEL O - Replaced by 230-843374T 1
(more info)
    UnavailableUnavailable Parts
FLYWHEEL 230-843374T 1  
230-843374T 1OEM Part 230-843374T 1 - Flywheel (more info) About Mercury Marine $447.79 $447.79 Add to shopping cart
Available to order:
Usually ships
within 8 days
#7 230-811563 FLYWHEEL (1 required per assembly) (GEN V DRIVELINE OR TRANSMISSION MODELS)
FLYWHEEL          O - Replaced by 230-811563  1  
230-811563This part has been superseded. FLYWHEEL O - Replaced by 230-811563 1
(more info)
    UnavailableUnavailable Parts
FLYWHEEL 230-811563  1  
230-811563 1OEM Part 230-811563 1 - Flywheel (more info) About Mercury Marine $438.57 $438.57 Add to shopping cart
1 in stock. Explain stock levels
#7 230-5534 FLYWHEEL (1 required per assembly) (MARK IV DRIVELINE OR TRANSMISSION MODELS)
FLYWHEEL          O NLA  
230-5534 FLYWHEEL O NLA
(more info)
    UnavailableUnavailable Parts
#8 10-49845 SCREW (.437-20 x 1.00) (6 required per assembly)
10845757 10-49845  
10-49845OEM Part 10-49845 - Screw (more info) About Mercury Marine $2.10 $2.10 Add to shopping cart
2 in stock. Explain stock levels
SCREW (.437-20 x 10-845757 10-845757
10-845757OEM Part 10-845757 - Screw (more info) About Mercury Marine $4.10 $4.10 Add to shopping cart
Available to order:
Usually ships
within 8 days
#9 18311A17 COUPLING ASSEMBLY-Engine (1 required per assembly) (BRAVO MODELS ONLY)
COUPLING ASSY     O - Replaced by -861523A 9 18311A17
18311A17This part has been superseded. COUPLING ASSY O - Replaced by -861523A 9
(more info)
    UnavailableUnavailable Parts
COUPLER ASSY      O - Replaced by -8M0098795 861523A 9
861523A 9This part has been superseded. COUPLER ASSY O - Replaced by -8M0098795
(more info)
    UnavailableUnavailable Parts
COUPLER ASSEMBLY 8M0098795  
8M0098795OEM Part 8M0098795 - Coupler Assembly (more info) About Mercury Marine $583.25 $583.25 Add to shopping cart
Available to order:
Usually ships
within 8 days
Engine Coupler 18-2412
18-2412OEM Match 18-2412 - Coupler, Bravo (more info) About Sierra Marine $537.76 $455.41 Add to shopping cart
3 in stock. Explain stock levels
#10 10-14883 SCREW (.375-16 x 1.125) (6 required per assembly)
SCREW (.375-16 x 10-14883 10-14883
10-14883OEM Part 10-14883 - Screw (more info) About Mercury Marine $1.40 $1.40 Add to shopping cart
Available to order:
Usually ships
within 8 days
#11 12-20572 WASHER (6 required per assembly)
WASHER (.390 x .7 12-20572  
12-20572OEM Part 12-20572 - Washer (more info) About Mercury Marine $1.10 $0.62 Add to shopping cart
9 in stock. Explain stock levels
#NS 22-49099 FITTING-Grease (2 required per assembly)
FITTING 22-49099  
22-49099OEM Part 22-49099 - Fitting (more info) About Mercury Marine $3.50 $3.50 Add to shopping cart
Available to order:
Usually ships
within 8 days
#12 614-9641 CONNECTING ROD ASSEMBLY (8 required per assembly)
CONN ROD ASSY     O - Replaced by 614-9641T  
614-9641This part has been superseded. CONN ROD ASSY O - Replaced by 614-9641T
(more info)
    UnavailableUnavailable Parts
CONN ROD ASSY     O - Replaced by 614-8M0084554  
614-9641TThis part has been superseded. CONN ROD ASSY O - Replaced by 614-8M0084554
(more info)
    UnavailableUnavailable Parts
CONN ROD ASSY 614-8M0084554  
6148M0084554OEM Part 6148M0084554 - Connecting Rod Assembly (more info) About Mercury Marine $355.42 $355.42 Add to shopping cart
Available to order:
Usually ships
within 8 days
#13 10-19234 BOLT-Conn Rod Cap (16 required per assembly)
SCREW 10-19234 10-19234
10-19234OEM Part 10-19234 - Screw (more info) About Mercury Marine $6.91 $6.91 Add to shopping cart
10+ in stock. Explain stock levels
#14 11-37493 NUT-Conn Rod Cap Bolt (16 required per assembly)
NUT 11-37493 11-37493
11-37493OEM Part 11-37493 - Nut (more info) About Mercury Marine $2.00 $2.00 Add to shopping cart
1 in stock. Explain stock levels
#15 23-85726 BEARING SET (STANDARD) (8 required per assembly)
BRG SET-STD       O - Replaced by 23-85726001 23-85726
23-85726This part has been superseded. BRG SET-STD O - Replaced by 23-85726001
(more info)
    UnavailableUnavailable Parts
BEARING SET Conn 23-85726001 23-85726001
23-85726001OEM Part 23-85726001 - Bearing Set - Std (more info) About Mercury Marine $19.83 $19.83 Add to shopping cart
Available to order:
Usually ships
within 8 days
Std. Rod Bearings 18-1334
18-1334OEM Match 18-1334 - Rod Bearing, 23-85726 (more info) About Sierra Marine $20.49 $16.12 Add to shopping cart
10+ in stock. Explain stock levels
#15 23-85727 BEARING SET (.001 U.S.) (AR required per assembly)
BEARING SET Conne 23-85727 23-85727
23-85727OEM Part 23-85727 - Bearing Set - .001 Us (more info) About Mercury Marine $19.42 $19.42 Add to shopping cart
2 in stock. Explain stock levels
#15 23-85728 BEARING SET (.002 U.S.) (AR required per assembly)
BRG SET-.002 US,NLA 23-85728 23-85728
23-85728OEM Part 23-85728 - Bearing Set - .002 Us, NLA (more info) About Mercury Marine $9.50 $9.50 Add to shopping cart
10+ in stock. Explain stock levels
#15 23-85691 BEARING SET (.010 U.S.) (AR required per assembly)
BEARING SET Conne 23-85691 23-85691
23-85691OEM Part 23-85691 - Bearing Set - .010 Us (more info) About Mercury Marine $16.75 $16.75 Add to shopping cart
Available to order:
Usually ships
within 8 days
Rod Bearing 18-1333
18-1333 18-1333 - Rod Bearing, 23-85691 - Special Order - No Returns (more info)       Special Order Please Call
#15 23-85729 BEARING SET (.020 U.S.) (AR required per assembly)
BEARING SET Conne 23-85729 23-85729
23-85729OEM Part 23-85729 - Bearing Set - .020 Us (more info) About Mercury Marine $15.17 $15.17 Add to shopping cart
Available to order:
Usually ships
within 8 days
#16 429-5880 CRANKSHAFT (1 required per assembly) (S/N: 0D456000 - 0D725808)
CRANKSHAFT        O NLA  
429-5880 CRANKSHAFT O NLA
(more info)
    UnavailableUnavailable Parts
#16 429-811552 CRANKSHAFT (1 required per assembly) (S/N: 0D763746 - 0F348963)
CRANKSHAFT 429-811552  
429-811552OEM Part 429-811552 - Crankshaft (more info) About Mercury Marine $2,271.43 $2,271.43 Add to shopping cart
Available to order:
Usually ships
within 8 days
#17 28-811558 KEY-Crankshaft (2 required per assembly) (S/N: 0D456000 - 0D725808)
KEY               O - Replaced by 28-845607  
28-811558This part has been superseded. KEY O - Replaced by 28-845607
(more info)
    UnavailableUnavailable Parts
KEY 28-845607 28-845607
28-845607OEM Part 28-845607 - Key (more info) About Mercury Marine $4.30 $4.30 Add to shopping cart
Available to order:
Usually ships
within 8 days
#17 28-34466 KEY-Crankshaft (2 required per assembly) (S/N: 0D763746 - 0F348963)
KEY 28-34466  
28-34466OEM Part 28-34466 - Key (more info) About Mercury Marine $2.50 $2.50 Add to shopping cart
Available to order:
Usually ships
within 8 days
#18 816618 DRIVE PLATE (1 required per assembly) (TRANSMISSION MODELS)
DRIVEPLATE        O - Replaced by -8M0051206 816618
816618This part has been superseded. DRIVEPLATE O - Replaced by -8M0051206
(more info)
    UnavailableUnavailable Parts
DRIVEPLATE 8M0051206  
8M0051206OEM Part 8M0051206 - DrivePlate (more info) About Mercury Marine $717.92 $717.92 Add to shopping cart
Available to order:
Usually ships
within 8 days
#19 10-35091 SCREW (.375-16 x 1.00) (6 required per assembly) (TRANSMISSION MODELS)
SCREW (.375-16 x 10-35091 10-35091
10-35091OEM Part 10-35091 - Screw - Priced Individually (more info) About Mercury Marine $11.80 $11.80 Add to shopping cart
Available to order:
Usually ships
within 8 days
#20 13-35048 LOCKWASHER (.375) (6 required per assembly) (TRANSMISSION MODELS)
LOCKWASHER (.375) 13-35048 13-35048
13-35048OEM Part 13-35048 - LockWasher - Priced Individually (more info) About Mercury Marine $0.90 $0.90 Add to shopping cart
10+ in stock. Explain stock levels
#21 23-49126 BUSHING-Pilot-Crankshaft (1 required per assembly) (DRIVELINE MODELS ONLY)
BUSHING 23-49126  
23-49126OEM Part 23-49126 - Bearing (more info) About Mercury Marine $42.17 $42.17 Add to shopping cart
Available to order:
Usually ships
within 8 days
#22 25-811528 O RING (#5 Bearing Cap Oil Hole) (1 required per assembly) (S/N: 0D763746 - 0F348963)
O RING            O - Replaced by 25-69756  
25-811528This part has been superseded. O RING O - Replaced by 25-69756
(more info)
    UnavailableUnavailable Parts
O-RING (.549 x .1 25-69756  
25-69756OEM Part 25-69756 - O-Ring (more info) About Mercury Marine $2.40 $2.40 Add to shopping cart
Available to order:
Usually ships
within 8 days
#- 27-817118A90 Gasket Set (- required per assembly)
GASKET SET        O NLA  
27-817118A90 GASKET SET O NLA
(more info)
    UnavailableUnavailable Parts
#- 27-827014A92 Gasket Set (- required per assembly)
GASKET SET        O - Replaced by 27-827014A98  
27-827014A92This part has been superseded. GASKET SET O - Replaced by 27-827014A98
(more info)
    UnavailableUnavailable Parts
GASKET SET        O NLA 27-827014A98
27-827014A98 GASKET SET O NLA
(more info)
    UnavailableUnavailable Parts