Yamaha Outboard .25 mm OS Inline Pistons

Refine Parts List
HP/Model

(9.9 to 90)
Years

(1984 - Up)

HP/Model

Years

Sierra Piston, .25mm OS

Mallory Piston, .25mm OS

9.91984-200318-4136 -
151984-200318-4136 -
25198518-4139
out of stock
-
251988-Up18-4142 9-53811
C25 MHV2199718-4145 9-53806
301984-198618-4139
out of stock
-
C301989-199218-4139
out of stock
-
C301993-199718-4145 9-53806
401984-198818-4142 9-53811
401992-199418-4142 9-53811
401996-200318-4142 9-53811
C401997-199918-4142 9-53811
C402001-200218-4142 9-53811
P40199818-4142 9-53811
E48199718-4098
out of stock
-
501986-198818-4142 9-53811
501996-199718-4142 9-53811
501999-200018-4142 9-53811
502002-200318-4142 9-53811
C501998-199918-4142 9-53811
C50200118-4142 9-53811
P50199618-4142 9-53811
P501987-198818-4142 9-53811
551993-199518-4098
out of stock
-
751994-199818-4098
out of stock
-
C75199618-4098
out of stock
-
C751998-199918-4098
out of stock
-
E75199618-4098
out of stock
-
E75199718-4098
out of stock
-
P751996-199918-4098
out of stock
-
C80199718-4098
out of stock
-
C851992-199618-4098
out of stock
-
901994-199918-4098
out of stock
-
C901997-200118-4098
out of stock
-

HP/Model

Years

Sierra Piston, .25mm OS

Mallory Piston, .25mm OS

Refine Parts List
HP/Model

(9.9 to 90)
Years

(1984 - Up)

Blowout
Save 22%-23% Off.*
.25 OS Bore Inline Piston Kit Japanese Model - Sierra

Part # 18-4136
Hurry! Only 1 left in stock
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Part # 18-4136
Replaces OEM part #
  • MERCURY MARINE 761-8022T
  • MERCURY MARINE 761-8022M
  • YAMAHA 6E7-11635-00-00
For:
  • 9.9/15 HP, 2 Cyl, .25 mm OS bore
Contains:
  • Piston, Piston Rings, Wrist Pin and Circlips
Wiseco 3030P2 replacement parts

.25 mm OS Inline Piston - Sierra*
Sale Price: $69.29
Save: $20.70
(23% Off $89.99)
Part # 18-4142
No Reviews | Write Review


Part # 18-4142
Replaces OEM part #
  • YAMAHA 6H4-11635-00-00
.25mm O.S.

Contains:
  • Piston, Piston Rings, Wrist Pin and Circlips
.25 mm OS Inline Piston - Sierra

.25 mm OS Inline Piston - Sierra*
Sale Price: $29.69
Save: $8.80
(22% Off $38.49)
Part # 18-4145
No Reviews | Write Review


Part # 18-4145
Replaces OEM part #
  • YAMAHA 61N-11635-00-00
.25mm O.S.

Contains:
  • Piston, Piston Rings, Wrist Pin and Circlips
 

Mallory Piston .25mm 9-53811
Sale Price: $68.99
Save: $10.98
(13% Off $79.97)
Part # 9-53811
No Reviews | Write Review


Replaces Original Equipment Manufacturer(OEM):Yamaha
Replaces Original Equipment Manufacturer # (OEM #):6H4-11635-00-00
Fits Application:40/50 1984-88 w/2.953 Bore
 

Mallory Piston .25mm 9-53806
Sale Price: $63.99
Save: $9.60
(13% Off $73.59)
Part # 9-53806
Hurry! Only 1 left in stock
No Reviews | Write Review


Replaces Original Equipment Manufacturer(OEM):Yamaha
Fits Application:85 1992-93 / 90 1984-99 w/3.228 Bore
Representative Photo.

Sierra

Mallory and Sierra inline pistons for Yamaha outboard motors.
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