18-3536 Thermostat for Johnson Evinrude Mercury Mariner | JLM Marine

Vendor: JLM Marine
Availability: In Stock
Product Type: Thermostat
$16.99
$16.99
Subtotal: $16.99

Free Shipping

Free standard shipping on all orders under 1 KG

Worry-Free Returns

Learn More.
photo of JLM Marine thermostat 378065 393659 434841 437414 5005440 435491 833072003 18-3536 for Johnson Evinrude with copper cylinder and two black rubber gaskets

18-3536 Thermostat for Johnson Evinrude Mercury Mariner | JLM Marine

$16.99

18-3536 Thermostat for Johnson Evinrude Mercury Mariner | JLM Marine

$16.99

18-3536 Thermostat for Johnson Evinrude Mercury Mariner | JLM Marine

This high-quality aftermarket thermostat is engineered to fit a wide range of Johnson, Evinrude, Mercury, and Mariner outboard motors from 4.5 HP to 300 HP, covering both 2-stroke and 4-stroke engines, including Cross Flow, Looper, Optimax, and E-TEC models. Designed for reliable temperature regulation at 143°F, this stainless steel thermostat ensures optimal engine performance across decades of outboard production (1974–2018).

This thermostat directly replaces multiple OEM part numbers including 18-3536, 833072002, 833072003, 833072004, 0377148, 0377612, 0378065, 0393659, 0434841, 0437414, 5005440, and 833072, providing broad compatibility across Johnson, Evinrude, Mercury, and Mariner engine families.

  • Temperature Rating: 143 degrees Fahrenheit
  • Material: Stainless steel construction for durability
  • Application: Fits 2-stroke, 4-stroke, Optimax, and E-TEC engines

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Brand Part Number
Johnson/Evinrude/Mercury/Mariner 18-3536
Johnson/Evinrude/Mercury/Mariner 833072002
Johnson/Evinrude/Mercury/Mariner 833072003
Johnson/Evinrude/Mercury/Mariner 833072004
Johnson/Evinrude/Mercury/Mariner 0377148
Johnson/Evinrude/Mercury/Mariner 0377612
Johnson/Evinrude/Mercury/Mariner 0378065
Johnson/Evinrude/Mercury/Mariner 0393659
Johnson/Evinrude/Mercury/Mariner 0434841
Johnson/Evinrude/Mercury/Mariner 0437414
Johnson/Evinrude/Mercury/Mariner 5005440
Johnson/Evinrude/Mercury/Mariner 833072

Compatible Engine Models

Confirm your engine model/year in the table below. For Johnson/Evinrude owners, here's a guide to help you identify your engine's serial/model: Johnson Serial Number Guide.

For Mercury owners, here's a guide to help you identify your engine's serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Brand Model Rated HP Stroke Years
Johnson/Evinrude 2 Cyl 2.188 Bore Cross Flow 15 2-Stroke 1980-1987
Johnson/Evinrude 2 Cyl 2.188 Bore Cross Flow 9.9 2-Stroke 1974-1987
Johnson/Evinrude 2 Cyl 2.375 Bore Cross Flow 15 2-Stroke 1995
Johnson/Evinrude 2 Cyl 3.000 Bore Cross Flow 20 2-Stroke 1985-1998
Johnson/Evinrude 2 Cyl 3.000 Bore Cross Flow 25 2-Stroke 1980-2005
Johnson/Evinrude 2 Cyl 3.000 Bore Cross Flow 28 2-Stroke 1986-1996
Johnson/Evinrude 2 Cyl 3.000 Bore Cross Flow 30 2-Stroke 1984-2005
Johnson/Evinrude 2 Cyl 3.000 Bore Cross Flow 35 2-Stroke 1980-1986
Johnson/Evinrude 2 Cyl 3.187 Bore Looper 35 2-Stroke 1986-1996
Johnson/Evinrude 2 Cyl 3.187 Bore Looper 40 2-Stroke 1984-1988
Johnson/Evinrude 2 Cyl 3.187 Bore Looper 45 2-Stroke 1986-1992
Johnson/Evinrude 2 Cyl 3.187 Bore Looper 48 2-Stroke 1988
Johnson/Evinrude 2 Cyl 3.187 Bore Looper 50 2-Stroke 1980-1988
Johnson/Evinrude 2 Cyl 3.187 Bore Looper 55 2-Stroke 1981-1992
Johnson/Evinrude 2 Cyl 3.187 Bore Looper 60 2-Stroke 1980-1985
Johnson/Evinrude 2 Cyl 6 2-Stroke 1985-1988
Johnson/Evinrude 2 Cyl 8 2-Stroke 1985-1988
Johnson/Evinrude 2 Cyl 4Stroke 15 4-Stroke 1995-2001
Johnson/Evinrude 2 Cyl 4Stroke 9.9 4-Stroke 1995-2001
Johnson/Evinrude 4 Cyl 3.600 Bore E-TEC 115 E-TEC 2007-2011
Johnson/Evinrude 4 Cyl 3.600 Bore E-TEC 130 E-TEC 2010-2011
Johnson/Evinrude 6 Cyl 3.500 Bore Cross Flow 150 2-Stroke 1978-1991
Johnson/Evinrude 6 Cyl 3.500 Bore Cross Flow 155 2-Stroke 1984-1992
Johnson/Evinrude 6 Cyl 3.500 Bore Cross Flow 185 2-Stroke 1984-1985
Johnson/Evinrude 6 Cyl 3.500 Bore Cross Flow 200 2-Stroke 1976-1983
Johnson/Evinrude 6 Cyl 3.500 Small Bore Cross Flow 175 2-Stroke 1978-1985
Johnson/Evinrude 6 Cyl 3.500 Small Bore Cross Flow 235 2-Stroke 1978-1979
Johnson/Evinrude 6 Cyl 3.600 Bore 60 Degree E-TEC 200 E-TEC 2007-2011
Johnson/Evinrude 6 Cyl 3.600 Bore E-TEC 135 E-TEC 2013-2014
Johnson/Evinrude 6 Cyl 3.600 Bore E-TEC 150 E-TEC 2007-2012
Johnson/Evinrude 6 Cyl 3.600 Bore E-TEC 175 E-TEC 2007-2011
Johnson/Evinrude 6 Cyl 3.625 Big Bore Cross Flow 175 2-Stroke 1987-1991
Johnson/Evinrude 6 Cyl 3.625 Bore Cross Flow 235 2-Stroke 1981-1985
Johnson/Evinrude 6 Cyl 3.854 Bore E-TEC 3.3 Liter 200 E-TEC 2005-2012
Johnson/Evinrude 6 Cyl 3.854 Bore E-TEC 3.3 Liter 225 E-TEC 2005-2012
Johnson/Evinrude 6 Cyl 3.854 Bore E-TEC 3.3 Liter 250 E-TEC 2005-2011
Johnson/Evinrude 6 Cyl 3.854 Bore E-TEC 3.4 Liter 250 E-TEC 2010
Johnson/Evinrude 6 Cyl 3.854 Bore E-TEC 3.4 Liter 300 E-TEC 2009-2012
Mariner ALL ALL ALL ALL
Mercury 3 Cyl 3.6255 Bore 1.5L Optimax 75/90/115 Optimax 2004-2014
Mercury 3 Cyl 3.6255 Bore 1.5L Optimax 125 Optimax 2006-2012
Mercury 3 Cyl 3.6255 Bore 1.5L Optimax 80 Optimax 2006-2014
Mercury 3 Cyl 3.6255 Bore Pro XS 115 Pro XS 2010-2015
Mercury 6 Cyl 2.5L XS 200 2-Stroke 2001-2006
Mercury 6 Cyl 3.501 Bore 2.5L Jet 110 Optimax 2006-2013
Mercury 6 Cyl 3.501 Bore 2.5L Optimax 115 Optimax 2000
Mercury 6 Cyl 3.501 Bore 2.5L Optimax 135 Optimax 1998-2012
Mercury 6 Cyl 3.501 Bore 2.5L Optimax 150 Optimax 1998-2014
Mercury 6 Cyl 3.501 Bore 2.5L Optimax 175 Optimax 2001-2014
Mercury 6 Cyl 3.625 Bore 3L 225 2-Stroke 1994-2001
Mercury 6 Cyl 3.625 Bore 3L EFI 225 EFI 1995-2001
Mercury 6 Cyl 3.625 Bore 3L EFI 250 EFI 1995-2001
Mercury 6 Cyl 3.625 Bore 3L Pro Max 300 2-Stroke 1998-2000
Mercury 6 Cyl 3.625 Bore 3L XB 250 2-Stroke 2000-2004
Mercury 6 Cyl 3.6265 Bore 2.5L Pro XS 150 Pro XS 2010-2018
Mercury 6 Cyl 3.6265 Bore 2.5L Pro XS 175 Pro XS 2008-2018
Mercury 6 Cyl 3.6265 Bore 3L Optimax 200 Optimax 1997
Mercury 6 Cyl 3L Carb Sea Pro 225 2-Stroke 1995-2001

We can ship to virtually any address in the world with free shipping available for most regions.

For our typical US and Canadian customers , our shipping timeframes are as follows:

  • Amazon FBA: orders will be delivered within 1-5 business days after placing the order (during certain special periods such as major promotions, Christmas, etc., the delivery time of Amazon FBA may be affected).
  • US warehouse shipment: orders will be delivered within 5 days after placing the order.
  • China warehouse shipment: orders will be delivered about 12 days after placing the order.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.

As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.

We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.

Parts Finder

Use our Parts Finder to quickly locate the correct parts for your engine. Search by Make, HP, Stroke, Model, Year, and SN. Select only the fields available — you don’t need to fill all options (e.g., leave Year blank if not applicable).

Our database is currently being updated and expanded. More models, including Yamaha, Mercury, and Suzuki, are being verified and uploaded, with full completion expected by the end of April.

Recently Viewed Products