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If your Mfgr. says:

That motor's 7 years old!!
Part is no longer available.
We lose $$ on service!
EPA made me do it!
Part's at central warehouse, you'll get it next month.
We don't make parts for those.
We only do warranty work.
Our techs only fix late models.
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THERMOSTATS AND GASKETS

Concerned about your gearcase or water pump? Try our gearcase tips page.

THERMOSTATS
THERMOSTAT APPLICATION PRICE BUY NOW
1958-1972  V4 MOTORS 377276377276 $49.50
6-25 HP 2-Stroke 1958 - UP
V4 & V6 Crossflow motors 1976 - UP
Original BRASS type, freshwater/brackish use		 5005440 THERMOSTAT BRASS403 $15.00
6-25 HP 2-Stroke 1958 - UP
V4 & V6 Crossflow motors 1976 - UP
STAINLESS STEEL, recommended for saltwater use		 5005440 THERMOSTAT S.S.403S $21.00
3-Cylinder motors 55-75 HP 1968-1985 396987422 $30.50
Most models 1992-present carb motors
Diaphragm #2210 (many V-motors) or
Gasket # 2206 (inline & some V-motors)
Rubber Seat #1960		 434137434 $26.50
Models 1998-present FICHT injected and 60° motors 435491435S $21.00
1970's V4 motors (Vernatherm type) 105° temp
Most used with gasket 318396		 3847193560 $44.75
Many mid-1990's & newer motors 40 HP & Up
(take-apart Vernatherm type) 143° temp
Diaphragm #18-3501
Gasket # 2206		 4361953561 $15.75
Thermostat kit many older
small 2-cylinder 18-25 HP		 403KITOMC THERMOSTAT KIT OLDER 2 CYLINDER $21.00
Thermostat kit V4 Crossflow OMC V4 X-FLOW THERMOSTAT KIT BRASS2658A $53.00
Thermostat kit V4 Crossflow (stainless thermostats) OMC V4 X-FLOW THERMOSTAT KIT SS2658S $55.00
Thermostat Housing Hose set for above V4 kits
(V4 Crossflow 1978-UP)		 097340976, 340975 $26.00
Thermostat kit V6 Crossflow (brass thermostats) OMC 150 175 X-FLOW THERMOSTAT KIT BRASS2659A $39.00
Thermostat kit V6 Crossflow (stainless thermostats) OMC 150 175 X-FLOW THERMOSTAT KIT SS2659S $41.00
Thermostat kit 3-cylinder 60 & 75 HP OMC 3-CYL 60 70 THERMOSTAT KIT423 $30.75
Thermostat kit FICHT & 60° motors OMC FICHT THERMOSTAT KIT597 $36.00
Thermostat kit many V4 & V6 motors OMC V4 V6 THERMOSTAT KIT598 $40.00
DON'T SEE WHAT YOU NEED? JUST ASK.
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THERMOSTAT GASKETS
Cork ring behind many thermostats 329319329319 $3.25
Rubber seal top of thermostat many applications 310058424 $1.50
Corkring behind many 1970's 3-cylinder thermostats 3134160929 $1.50
Corkring behind many 1970's V4 thermostats 3219320675 $1.75
Rubber seat behind thermostat # 434 3208801960 $2.00
Many early 2-cylinder thru 7.5 HP
with thermostat on top of head 		311145311145 $5.00
1968-1973 9.5 HP
with thermostat on top of head 		309580309580 $9.25
Many early 2-cylinder 18-25 HP
with thermostat on top of head 		308328308328 $3.25
Late 1980's 60, 65 commercial, 75 HP 332108777 $1.00
Many motors using #3561 vernatherm or
#434 thermostat (without external diaphragm)		 3298302206 $1.00
Diaphragmfor motors using #3561 thermostat 18-3501, 43595718-3501 $18.50
Diaphragm/gasket for many V4 thru V8 motors using #434 thermostat 3944082210 $9.75
Used on many 3-cyl & V4 1970's 318394318394 $8.75
Many V4 motors 1990's 332369952 $1.25
Many 1970's V6 motors 321184949 $1.50
Late model V6 3370681969 $1.50
35 HP 1958-59
40 HP 1960-70
BIG TWINS		 0426305196 $5.25
1980's 6 HP 329076329076 $1.25
Older V4 with vernatherm type thermostat 318396318396
$7.75
Older 2-cylinder with top mount thermostat 309580318396
$9.75
DON'T SEE WHAT YOU NEED? JUST ASK.
 QUICK QUOTE FORM
QUICK SECURE ORDER FORM

We pay the freight out in USA on all orders over $100.00. Orders less than this amount will have a shipping and handling charge of $8.75 added. Some bulky and heavy items will incur additional charges. You will be notified beforehand if this is the case. Remember, all orders receive free technical support from the MasterTech!

 

  
 

Please review our Warranty, Returns & Refunds policies before you place an order.

DISCLAIMER

The information provided on these pages is correct to the best of my knowledge, however the MasterTech makes no warranty, express or implied, regarding the use of, results of, or liability created from, application of this data. This information is disseminated in good faith, however MasterTech assumes NO LIABILITY whatsoever in regard to this service. The information, software, products, and services published on this web site may include inaccuracies or typographical errors. Changes are periodically added to the information herein. Mastertech may make improvements to this site at any time. Parts ordered from this website may or may not be in dealer stock at the time of order. Thank you for reading.


Revised