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Parts for Mariner 55 HP (3 Cylinder) Crankshaft, Pistons & Connecting Rods

Ref. No. Part No. Description Manufacturer List Price Your Price Order
#1 478-9611A 1 CRANKSHAFT ASSEMBLY (1 required per assembly)
CRANKSHAFT        O - Replaced by 478-9611T 1  
478-9611A 1This part has been superseded. CRANKSHAFT O - Replaced by 478-9611T 1
(more info)
    UnavailableUnavailable Parts
CRANKSHAFT ASSY 478-9611T 1  
478-9611T 1OEM Part 478-9611T 1 - Crankshaft Assembly (more info) About Mercury Marine $1,592.86 $1,592.86 Add to shopping cart
Available to order:
Usually ships
within 8 days
#2 30-63742 BALL BEARING (1 required per assembly)
BEARING-BALL      O - Replaced by 30-63742T 30-63742
30-63742This part has been superseded. BEARING-BALL O - Replaced by 30-63742T
(more info)
    UnavailableUnavailable Parts
BEARING Ball 30-63742T 30-63742T
30-63742TOEM Part 30-63742T - Ball Bearing (more info) About Mercury Marine $28.30 $24.24 Add to shopping cart
Available to order:
Usually ships
within 8 days
Ball Bearing 18-1154
18-1154OEM Match 18-1154 - Bearing, 30-63742, 377139 (more info)
Replaces OEM #0377139
About Sierra Marine $25.99 $19.44 Add to shopping cart
1 in stock. Explain stock levels
#3 53-812877 RETAINING RING (1 required per assembly)
RING Retaining 53-812877  
53-812877OEM Part 53-812877 - Ring - Retaining (more info) About Mercury Marine $1.90 $1.90 Add to shopping cart
Available to order:
Usually ships
within 8 days
#4 28-91800 KEY (2 required per assembly)
KEY Woodruff 28-91800 28-91800
28-91800OEM Part 28-91800 - Key - Priced Individually (more info) About Mercury Marine $1.63 $1.63 Add to shopping cart
1 in stock. Explain stock levels
#5 43-43019A 2 DRIVER GEAR (1 required per assembly)
GEAR ASSEMBLY 43-43019A 2 43-43019A 2
43-43019A 2OEM Part 43-43019A 2 - Driver Gear Kit (more info) About Mercury Marine $42.33 $42.33 Add to shopping cart
Available to order:
Usually ships
within 8 days
#6 31-812873A 1 ROLLER BEARING ASSEMBLY (TOP) (1 required per assembly)
BEARING ASSEMBLY 31-812873A 1 31-812873A 1
31-812873A 1OEM Part 31-812873A 1 - Bearing Kit (more info) About Mercury Marine $106.67 $106.67 Add to shopping cart
Available to order:
Usually ships
within 8 days
#7 26-41953 1 OIL SEAL (1 required per assembly)
SEAL Oil 26-41953  1 26-41953  1
26-41953 1OEM Part 26-41953 1 - Seal (more info) About Mercury Marine $21.08 $21.08 Add to shopping cart
Available to order:
Usually ships
within 8 days
#8 812881A 1 ROLLER BEARING ASSEMBLY (CENTER) (2 required per assembly)
BEARING ASSEMBLY 812881A 1 812881A 1
812881A 1OEM Part 812881A 1 - Bearing - Center Main (more info) About Mercury Marine $117.75 $117.75 Add to shopping cart
Available to order:
Usually ships
within 8 days
#9 783-9613A 1 PISTON ASSEMBLY (3 required per assembly) (STANDARD)
PISTON            O - Replaced by 783-9613T 1 783-9613A 1
783-9613A 1This part has been superseded. PISTON O - Replaced by 783-9613T 1
(more info)
    UnavailableUnavailable Parts
PISTON 783-9613T 1 783-9613T 1
783-9613T 1OEM Part 783-9613T 1 - Piston (more info) About Mercury Marine $223.67 $223.67 Add to shopping cart
Available to order:
Usually ships
within 8 days
#9 783-9613A 2 PISTON ASSEMBLY (AR required per assembly) (.015 O.S.)
PISTON ASY .015   O - Replaced by 783-9613T 2 783-9613A 2
783-9613A 2This part has been superseded. PISTON ASY .015 O - Replaced by 783-9613T 2
(more info)
    UnavailableUnavailable Parts
PISTON ASSY .015  O NLA 783-9613T 2
783-9613T 2 PISTON ASSY .015 O NLA
(more info)
    UnavailableUnavailable Parts
Piston-.015 18-4017
18-4017OEM Match 18-4017 - Piston, 783-9613A2 (more info) About Sierra Marine $199.49 $152.68 Add to shopping cart
2 in stock. Explain stock levels
#9 783-9613A 3 PISTON ASSEMBLY (AR required per assembly) (.030 O.S.)
PISTON ASY        O - Replaced by 783-9613T 3 783-9613A 3
783-9613A 3This part has been superseded. PISTON ASY O - Replaced by 783-9613T 3
(more info)
    UnavailableUnavailable Parts
PISTON 783-9613T 3 783-9613T 3
783-9613T 3OEM Part 783-9613T 3 - Piston (more info) About Mercury Marine $203.75 $112.59 Add to shopping cart
1 in stock. Explain stock levels
Piston-.030 18-4018
18-4018OEM Match 18-4018 - Piston .030 783-9613A3 (more info) About Sierra Marine $163.99 $122.46 Add to shopping cart
1 in stock. Explain stock levels
#10 40-52035 LOCK RING (6 required per assembly)
53857196 40-52035 40-52035
40-52035OEM Part 40-52035 - Lock Ring - Priced Individually (more info) About Mercury Marine $1.25 $1.25 Add to shopping cart
10+ in stock. Explain stock levels
LOCK RING 53-857196 53-857196
53-857196OEM Part 53-857196 - Lock Ring - Priced Individually (more info) About Mercury Marine $2.30 $1.56 Add to shopping cart
2 in stock. Explain stock levels
Circlips (2/PKG) 18-4294-9
18-4294-9OEM Match 18-4294-9 - Clips, PK2 (more info) About Sierra Marine $4.98 $3.49 Add to shopping cart
1 in stock. Explain stock levels
#11 39-19721A 6 PISTON RING (1 required per assembly) (STANDARD)
RING SET Piston 39-19721A 6 39-19721A 6
39-19721A 6OEM Part 39-19721A 6 - Rings - 6 - Standard (more info) About Mercury Marine $164.92 $164.92 Add to shopping cart
Available to order:
Usually ships
within 8 days
Ring Set-std. 18-4019
18-4019OEM Match 18-4019 - Rings, .39-19721A6 (more info) About Sierra Marine $57.99 $44.52 Add to shopping cart
Available to order:
Usually ships
within 8 days
#11 39-19721A 1 PISTON RING (AR required per assembly) (.015 O.S.)
RING SET Piston 39-19721A 1 39-19721A 1
39-19721A 1OEM Part 39-19721A 1 - Rings - 6-.015 Oversize (more info) About Mercury Marine $170.75 $170.75 Add to shopping cart
1 in stock. Explain stock levels
Piston Rings 18-4020
18-4020 18-4020 - Rings.39-19721A1 - Special Order - No Returns (more info)       Special Order Please Call
#11 39-19721A 2 PISTON RING (AR required per assembly) (.030 O.S.)
RING SET Piston 39-19721A 2 39-19721A 2
39-19721A 2OEM Part 39-19721A 2 - Rings - 6-.030 Oversize (more info) About Mercury Marine $175.67 $175.67 Add to shopping cart
Available to order:
Usually ships
within 8 days
Ring Set-.030 18-4021
18-4021OEM Match 18-4021 - Rings, 39-19721A2 (more info) About Sierra Marine $23.33 $17.51 Add to shopping cart
1 in stock. Explain stock levels
#12 640-9612A 2 CONNECTING ROD ASSEMBLY (3 required per assembly)
CONN ROD ASSY     O - Replaced by 640-9612A 7  
640-9612A 2This part has been superseded. CONN ROD ASSY O - Replaced by 640-9612A 7
(more info)
    UnavailableUnavailable Parts
CONN ROD KIT      O - Replaced by 640-9612A 6  
640-9612A 7This part has been superseded. CONN ROD KIT O - Replaced by 640-9612A 6
(more info)
    UnavailableUnavailable Parts
CONNECTING ROD AS 640-9612A 6  
640-9612A 6OEM Part 640-9612A 6 - Connecting Rod Assembly (more info) About Mercury Marine $317.83 $317.83 Add to shopping cart
Available to order:
Usually ships
within 8 days
#13 12-812876 WASHER (6 required per assembly)
128M0012298 12-812876  
12-812876OEM Part 12-812876 - Thrust Washer (more info) About Mercury Marine $2.22 $2.22 Add to shopping cart
10+ in stock. Explain stock levels
THRUST WASHER 12-8M0012298  
12-8M0012298OEM Part 12-8M0012298 - Thrust Washer (more info) About Mercury Marine $3.70 $3.70 Add to shopping cart
Available to order:
Usually ships
within 8 days
#14 29-47270 NEEDLE BEARING (87 required per assembly)
BEARING 29-47270 29-47270
29-47270OEM Part 29-47270 - Needle Bearing - Priced Individually (more info) About Mercury Marine $0.22 $0.22 Add to shopping cart
10+ in stock. Explain stock levels
Needle Bearing 18-4036-9
18-4036-9OEM Match 18-4036-9 - Bearing, 29-47270, 200PK (more info) About Sierra Marine $38.00 $30.62 Add to shopping cart
1 in stock. Explain stock levels
#15 10-91012 SCREW (6 required per assembly)
SCREW (.250-28 Sp 10-91012 10-91012
10-91012OEM Part 10-91012 - Screw -spec - Priced Individually (more info) About Mercury Marine $5.60 $3.36 Add to shopping cart
10+ in stock. Explain stock levels
#16 31-17514A 2 ROLLER BEARING (3 required per assembly)
318M0045430 31-17514A 2 31-17514A 2
31-17514A 2OEM Part 31-17514A 2 - Caged Bearing Kit - Outboard (more info) About Mercury Marine $40.00 $40.00 Add to shopping cart
10+ in stock. Explain stock levels
BEARING KIT 31-8M0045428 31-8M0045428
31-8M0045428OEM Part 31-8M0045428 - Bearing Kit (more info) About Mercury Marine $53.90 $46.16 Add to shopping cart
3 in stock. Explain stock levels
Needle Bearing Set (W/O Cag 18-4039
18-4039OEM Match 18-4039 - Needle Bearings, Without Cage (more info) About Sierra Marine $43.73 $34.18 Add to shopping cart
Available to order:
Usually ships
within 8 days
Rod Bearing w/cage 18-1194
18-1194OEM Match 18-1194 - Rod Bearing w/ Cage (more info) About Sierra Marine $57.62 $38.08 Add to shopping cart
2 in stock. Explain stock levels
#- 811209A93 POWERHEAD (1 required per assembly)
POWERHEAD MARINE  O - Replaced by -811209T93  
811209A93This part has been superseded. POWERHEAD MARINE O - Replaced by -811209T93
(more info)
    UnavailableUnavailable Parts
PH 50/60 3CYL     O NLA  
811209T93 PH 50/60 3CYL O NLA
(more info)
    UnavailableUnavailable Parts