Yamaha Outboard .50 mm OS Inline Pistons

Refine Parts List
HP/Model

(9.9 to 90)
Years

(1984 - Up)

HP/Model

Years

Sierra Piston, .50mm OS

Mallory Piston, .50mm OS

9.91984-200318-4137-
151984-200318-4137-
25198518-4140-
251988-Up18-4143 9-53812
C25 MHV2199718-4146 9-53807
301984-198618-4140-
C301989-199218-4140-
C301993-199718-4146 9-53807
401984-198818-4143 9-53812
401992-199418-4143 9-53812
401996-200318-4143 9-53812
C401997-199918-4143 9-53812
C402001-200218-4143 9-53812
P40199818-4143 9-53812
E48199718-4099 9-53817
501986-198818-4143 9-53812
501996-199718-4143 9-53812
501999-200018-4143 9-53812
502002-200318-4143 9-53812
C501998-199918-4143 9-53812
C50200118-4143 9-53812
P50199618-4143 9-53812
P501987-198818-4143 9-53812
551993-199518-4099 9-53817
601984-199818-4093 -
602002-200318-4093 -
C601996-200118-4093 -
E60 MLH,T,U,V1995-199718-4096 -
P601991-199918-4093 -
701984-199818-4093 -
701999-200318-4093 -
C702000-200118-4093 -
751994-199818-4099 9-53817
C75199618-4099 9-53817
C751998-199918-4099 9-53817
E75199618-4099 9-53817
E75199718-4099 9-53817
P751996-199918-4099 9-53817
C80199718-4099 9-53817
C851992-199618-4099 9-53817
901994-199918-4099 9-53817
C901997-200118-4099 9-53817

HP/Model

Years

Sierra Piston, .50mm OS

Mallory Piston, .50mm OS

Refine Parts List
HP/Model

(9.9 to 90)
Years

(1984 - Up)
Blowout
Save 23%-41% Off.
.50 mm OS Inline Piston - Sierra
Your Price: $90.99
Save: $6.00
(6% Off $96.99)
Part # 18-4093
No Reviews | Write Review
Replaces OEM part #
  • YAMAHA 6H3-11636-01-00
.50mm O.S.

Contains:
  • Piston, Piston Rings, Wrist Pin and Circlips
.50 mm OS Inline Piston - Sierra
Your Price: $44.99
Part # 18-4096
No Reviews | Write Review
Replaces OEM part #
  • YAMAHA 6K5-11636-03-00
.50mm O.S.

Contains:
  • Piston, Piston Rings, Wrist Pin and Circlips
.50 mm OS Inline Piston - Sierra
Your Price: $117.99
Save: $29.61
(20% Off $147.60)
Part # 18-4099
SHIPS TODAY!* if ordered in 3 hrs 14 mins.
No Reviews | Write Review
Replaces OEM part #
  • YAMAHA 6H1-11636-03-00
.50mm O.S.

Contains:
  • Piston, Piston Rings, Wrist Pin and Circlips
.50 mm OS Inline Piston - Sierra
Your Price: $76.99
Save: $12.71
(14% Off $89.70)
Part # 18-4143
SHIPS TODAY!* if ordered in 3 hrs 14 mins.
No Reviews | Write Review
Replaces OEM part #
  • YAMAHA 6H4-11636-00-00
.50mm O.S.

Contains:
  • Piston, Piston Rings, Wrist Pin and Circlips
.50 mm OS Inline Piston - Sierra
Your Price: $74.99
Save: $12.90
(14% Off $87.89)
Part # 18-4146
No Reviews | Write Review
Replaces OEM part #
  • YAMAHA 61N-11636-00-00
.50mm O.S.

Contains:
  • Piston, Piston Rings, Wrist Pin and Circlips
 
Mallory Piston .5mm 9-53817
Spring Sale Price: $86.99
Save: $60.61
(41% Off $147.60)
Part # 9-53817
SHIPS TODAY!* if ordered in 3 hrs 14 mins.
Hurry! Only 1 left in stock
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Replaces Original Equipment Manufacturer(OEM):Yamaha
Replaces Original Equipment Manufacturer # (OEM #):6H1-11636-00-00
Fits Application:40/50 1989-2003 w/2.638 Bore
 
Mallory Piston .5mm 9-53812
Spring Sale Price: $68.99
Save: $20.71
(23% Off $89.70)
Part # 9-53812
SHIPS TODAY!* if ordered in 3 hrs 14 mins.
No Reviews | Write Review
Replaces Original Equipment Manufacturer(OEM):Yamaha
Replaces Original Equipment Manufacturer # (OEM #):6H4-11636-00-00
Fits Application:40/50 1984-88 w/2.953 Bore
 
Mallory Piston .5mm 9-53807
Spring Sale Price: $63.99
Save: $23.90
(27% Off $87.89)
Part # 9-53807
SHIPS TODAY!* if ordered in 3 hrs 14 mins.
No Reviews | Write Review
Sierra
This product ships in 1 to 3 business days.

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Great Boating Days are Ahead!
Enjoy Extra Discounts 5-20% Off During the SPRING SAVINGS SALE!
Great Boating Days are Ahead!
Enjoy Extra Discounts 5-20% Off During the SPRING SAVINGS SALE!