Customer Ratings
Customer Reviews
⭐️ Lionparts has awesome customer service and can’t thank them enough for their help in getting my order/setup correct! - Tom M.
⭐️ Best customer service I have experienced in a very long time. Product is high quality and fits perfect - Christy
⭐️ LionParts has been very consistent, and helpful finding the necessary parts for my needs! - Curtis
⭐️ Had an awesome experience with Lionsparts! I bought my KFI snow plow from them through Trevor who was very knowledgeable and helpful! - Eric
WSM Poppet Valve Diaphragm for Mercury 40 - 400 Hp 72-21 540-34
$16.44
Questions? Call or text us at:1-888-927-3076
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Customer Reviews
⭐️ Lionparts has awesome customer service and can’t thank them enough for their help in getting my order/setup correct! - Tom M.
⭐️ Best customer service I have experienced in a very long time. Product is high quality and fits perfect - Christy
⭐️ LionParts has been very consistent, and helpful finding the necessary parts for my needs! - Curtis
⭐️ Had an awesome experience with Lionsparts! I bought my KFI snow plow from them through Trevor who was very knowledgeable and helpful! - Eric
NOTES:
This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading materials using up-to-date equipment, it ensures everlasting reliability and enduring value. This product is distinguished by total quality assurance, unsurpassed by anybody else.
OEM Replacement Numbers: 64877, 648771
Brand: WSM
Part Number: 540-34
Fitment:
- 1972-1983 Mercury 2 Cyl 2.875 Bore Cross Flow 40
- 1973-1976 Mercury 3 Cyl 2.875 Bore Cross Flow 65
- 1977-1983 Mercury 3 Cyl 2.875 Bore Cross Flow 70
- 1987-1990 Mercury 3 Cyl 3.375 Bore Looper 70
- 1987-1993 Mercury 3 Cyl 3.375 Bore Looper 75
- 1987-1990 Mercury 3 Cyl 3.375 Bore Looper 80
- 1987-1993 Mercury 3 Cyl 3.375 Bore Looper 90
- 1994-2006 Mercury 3 Cyl 3.500 Bore Looper 75
- 1994-2005 Mercury 3 Cyl 3.500 Bore Looper 90
- 1994-2005 Mercury 3 Cyl 65
- 1985-1993 Mercury 4 Cyl 3.375 Bore Looper 100
- 1989-1993 Mercury 4 Cyl 3.375 Bore Looper 115
- 1994-2000 Mercury 4 Cyl 3.500 Bore Looper 100
- 1994-2006 Mercury 4 Cyl 3.500 Bore Looper 115
- 1994-2006 Mercury 4 Cyl 3.500 Bore Looper 125
- 2006-2009 Mercury 4 Cyl 4 Stroke 135
- 2006-2021 Mercury 4 Cyl 4 Stroke 150
- 2006-2014 Mercury 4 Cyl 4 Stroke 175
- 1994-2005 Mercury 4 Cyl 80
- 1989-1990 Mercury 6 Cyl 250
- 1989-1994 Mercury 6 Cyl 275
- 1986-1988 Mercury 6 Cyl 3.125 Bore 2L 135
- 1978-1985 Mercury 6 Cyl 3.125 Bore 2L 150
- 1976-1981 Mercury 6 Cyl 3.125 Bore 2L 175
- 2009-2014 Mercury 6 Cyl 3.2283 Bore Verado 350
- 2015-2018 Mercury 6 Cyl 3.2283 Bore Verado 400
- 1981-1982 Mercury 6 Cyl 3.375 Bore 2.4L 175
- 1980-1981 Mercury 6 Cyl 3.375 Bore 2.4L 225
- 1983-1988 Mercury 6 Cyl 3.375 Chrome Bore 2.4L 175
- 1994-2001 Mercury 6 Cyl 3.625 Bore 3L 225
- 2004-2008 Mercury 6 Cyl 3.625 Bore 3L EFI 200
- 1995-2008 Mercury 6 Cyl 3.625 Bore 3L EFI 225
- 1995-2008 Mercury 6 Cyl 3.625 Bore 3L EFI 250
- 1998-2005 Mercury 6 Cyl 3.625 Bore 3L Pro Max 300
- 2000-2004 Mercury 6 Cyl 3.625 Bore 3L XB 250
- 1997-2018 Mercury 6 Cyl 3.6265 Bore 3L Optimax 200
- 1998-2018 Mercury 6 Cyl 3.6265 Bore 3L Optimax 225
- 2005-2014 Mercury 6 Cyl 3.6265 Bore 3L Optimax 250
- 2015-2018 Mercury 6 Cyl 3.6265 Bore 3L Optimax 300
- 2008-2018 Mercury 6 Cyl 3.6265 Bore 3L Pro XS 200
- 2005-2018 Mercury 6 Cyl 3.6265 Bore 3L Pro XS 225
- 2006-2018 Mercury 6 Cyl 3.6265 Bore 3L Pro XS 250
- 2002-2006 Mercury 6 Cyl 3.6265 Bore 3L Sport Jet 250
- 1995-2001 Mercury 6 Cyl 3L Carb Sea Pro 225
- 2005-2014 Mercury 6 Cyl 4 Stroke 200
- 2005-2014 Mercury 6 Cyl 4 Stroke 225
- 2005-2014 Mercury 6 Cyl 4 Stroke 250
- 2005-2010 Mercury 6 Cyl 4 Stroke 275
- 2007-2014 Mercury 6 Cyl 4 Stroke 300
Note: Image is for reference only, actual product may vary slightly.
