Refine Parts List
HP/Model:
Years:

HP/Model

Years

Sierra Piston, .50mm OS

9.9 1984-2003 18-4137
15 1984-2003 18-4137
25 1985 18-4140
25 1988-Up 18-4143
C25 MHV2 1997 18-4146
30 1984-1986 18-4140
C30 1989-1992 18-4140
C30 1993-1997 18-4146
40 1984-1988 18-4143
40 1992-1994 18-4143
40 1996-2003 18-4143
C40 1997-1999 18-4143
C40 2001-2002 18-4143
P40 1998 18-4143
E48 1997 18-4099
50 1986-1988 18-4143
50 1996-1997 18-4143
50 1999-2000 18-4143
50 2002-2003 18-4143
C50 1998-1999 18-4143
C50 2001 18-4143
P50 1996 18-4143
P50 1987-1988 18-4143
55 1993-1995 18-4099
60 1984-1998 18-4093
60 2002-2003 18-4093
C60 1996-2001 18-4093
E60 MLH,T,U,V 1995-1997 18-4096
P60 1991-1999 18-4093
70 1984-1998 18-4093
70 1999-2003 18-4093
C70 2000-2001 18-4093
75 1994-1998 18-4099
C75 1996 18-4099
C75 1998-1999 18-4099
E75 1996 18-4099
E75 1997 18-4099
P75 1996-1999 18-4099
C80 1997 18-4099
C85 1992-1996 18-4099
90 1994-1999 18-4099
C90 1997-2001 18-4099

HP/Model

Years

Sierra Piston, .50mm OS

Refine Parts List
HP/Model:
Years:
Price: $90.99
Save: $16.00
(14% Off $106.99)
Part # 18-4093
2nd Day Air for $2 More Eligible
No Reviews
Price: $42.77
Save: $2.25
(4% Off $45.02)
Part # 18-4096
2nd Day Air for $2 More Eligible
No Reviews
Price: $96.51
Save: $84.98
(46% Off $181.49)
Part # 18-4099
2nd Day Air for $2 More Eligible
No Reviews
Price: $90.18
Save: $19.81
(18% Off $109.99)
Part # 18-4143
2nd Day Air for $2 More Eligible
No Reviews
Price: $76.48
Save: $31.51
(29% Off $107.99)
Part # 18-4146
2nd Day Air for $2 More Eligible
No Reviews
Yamaha 2.638 Piston 20-25 Hp .5mm Over
Price: $54.96
(Out of stock)
Save: $13.04
(19% Off $68.00)
Part # 100-250-05K
No Reviews
(Out Of Stock)
Sierra
This product ships in 1 to 3 business days.
Add to Cart and enter your Postal Code to determine the shipping charges and estimated delivery date.
Most products and orders leave our warehouse in 1 business day. However, select items may take more processing time. Alaska and Hawaii orders please add 1 additional warehouse processing day.
Standard Shipping Policies