
Thermal switches sit in the water jacket and when the engine reaches the specified temperature the signal is sent.
Part # 3611 has three terminals. All other thermal switches have two terminals.
N.O. = Normally Open. N.C. = Normally Closed C.O. = Change Over
| Part # | Description | OEM# |
|---|---|---|
| 3611 | 185 Degree CO Thermal Switch – 3 terminal – 3/8″ NPT thread | 993611 |
| 3616 | 185 Degree NO Thermal Switch – 2 terminal – 1/2″ NPT thread | 993616 |
| 3619 | 185 Degree NC Thermal Switch – 2 terminal – 1/2″ NPT thread | 993619 |
| 3617 | 190 Degree NO Thermal Switch – 2 terminal – 1/2″ NPT thread | 993617 |
| 3603 | 190 Degree NC Thermal Switch – 2 terminal – 1/2″ NPT thread | 993603 |
| 3653 | 195 Degree NO Thermal Switch – 2 terminal – 1/2″ NPT thread | 993653 |
| 3605 | 195 Degree NC Thermal Switch – 2 terminal – 1/2″ NPT thread | 993605 |
| 3654 | 200 Degree NO Thermal Switch – 2 terminal – 1/2″ NPT thread | 993654 |
| 3606 | 200 Degree NC Thermal Switch – 2 terminal – 1/2″ NPT thread | 993606 |
| 3655 | 205 Degree NO Thermal Switch – 2 terminal – 1/2″ NPT thread | 993655 |
| 3607 | 205 Degree NC Thermal Switch – 2 terminal – 1/2″ NPT thread | 993607 |
| 3624 | 210 Degree NO Thermal Switch – 2 terminal – 1/2″ NPT thread | 993624 |
| 3684 | 210 Degree NC Thermal Switch – 2 terminal – 1/2″ NPT thread | 993684 |
| 3625 | 215 Degree NO Thermal Switch – 2 terminal – 1/2″ NPT thread | 993625 |
| 3685 | 215 Degree NC Thermal Switch – 2 terminal – 1/2″ NPT thread | 993665 |
| 3626 | 220 Degree NO Thermal Switch – 2 terminal – 1/2″ NPT thread | 993626 |
| 3665 | 220 Degree NC Thermal Switch – 2 terminal – 1/2″ NPT thread | 8037040 |
| 213673 | 210º N.O. (2-Wire) | 993673 |
| 37044 | 180 Degree CO Thermal Switch – 3 terminal – 1/2″ NPT thread | 8037044 |
| 37045 | 185 Degree CO Thermal Switch – 3 terminal – 1/2″ NPT thread | 1685131C92 |
| 37048 | 190 Degree CO Thermal Switch – 3 terminal – 1/2″ NPT thread | 8037048 |
| 37050 | 195 Degree CO Thermal Switch – 3 terminal – 1/2″ NPT thread | 1685132C92 |
| 37053 | 200 Degree CO Thermal Switch – 3 terminal – 1/2″ NPT thread | 8037053 |
| 37055 | 205 Degree CO Thermal Switch – 3 terminal – 1/2″ NPT thread | 1685171C92 |
| 37061 | 220 Degree CO Thermal Switch – 3 terminal – 1/2″ NPT thread | 8037061 |
| 37090 | 160 Degree CO Thermal Switch – 3 terminal – 3/8″ NPT thread | 1002-04880-24 |
| 37093 | 195 Degree CO Thermal Switch – 3 terminal – 3/8″ NPT thread | 1002-04880-31 |
| 37098 | 215 Degree CO Thermal Switch – 3 terminal – 3/8″ NPT thread | 1002-04880-35 |
| 37099 | 220 Degree CO Thermal Switch – 3 terminal – 3/8″ NPT thread | 1002-04880-36 |
| 37126 | 225 Degree CO Thermal Switch – 3 terminal – 3/8″ NPT thread | 1002-04880-37 |
| 37127 | 240 Degree CO Thermal Switch – 3 terminal – 3/8″ NPT thread | 1002-04880-40 |
| 37175 | 180 Degree CO Thermal Switch – 3 terminal – 3/8″ NPT thread | 1002-04880-28 |
| 37177 | 190 Degree CO Thermal Switch – 3 terminal – 3/8″ NPT thread | 1002-04880-30 |
| 37178 | 200 Degree CO Thermal Switch – 3 terminal – 3/8″ NPT thread | 1002-04880-32 |
| 37179 | 205 Degree CO Thermal Switch – 3 terminal – 3/8″ NPT thread | 1002-04880-33 |
| 37180 | 215 Degree CO Thermal Switch – 3 terminal – 3/8″ NPT thread | 1002-04880-35 |
| 37181 | 255 Degree CO Thermal Switch – 3 terminal – 3/8″ NPT thread | 1002-04880-43 |
| 37224 | 250 Degree CO Thermal Switch – 3 terminal – 3/8″ NPT thread | 1002-04880-42 |
| 37228 | 210 Degree CO Thermal Switch – 3 terminal – 1/2″ NPT thread | 8037228 |
| 37316 | 160 Degree CO Thermal Switch – 3 terminal – 1/2″ NPT thread | 8037316 |
| 37318 | 100 Degree NO Thermal Switch – 3 terminal – 1/2″ NPT thread | 3408643 |
| 37319 | 215 Degree CO Thermal Switch – 3 terminal – 1/2″ NPT thread | 3408626 |
| 37321 | 205 Degree CO Thermal Switch – 3 terminal – 1/2″ NPT thread | 3408631 |
| 37322 | 185 Degree CO Thermal Switch – 3 terminal – 1/2″ NPT thread | 3408639 |
| 37375 | 200 Degree CO Thermal Switch – 3 terminal – 1/2″ NPT thread | 3408632 |
| 37429 | 223 Degree CO Thermal Switch – 3 terminal – 1/2″ NPT thread | 4954948 |
| 37445 | 210 Degree CO Thermal Switch – 3 terminal – 1/2″ NPT thread | 3408625 |
All overtemp warning switches have one terminal.
N.O. = Normally Open. N.C. = Normally Closed
| Part # | Description | OEM# |
|---|---|---|
| 551132 | 200° N.O. 1/2″ Thread | 8039065 |
| 551133 | 205° N.O. 1/2″ Thread | 8036054 |
| 551134 | 210° N.O. 1/2″ Thread | 8039014 |
| 551135 | 215° N.O. 1/2″ Thread | 8039019 |
| 551136 | 220° N.O. 1/2″ Thread | 8039023 |
| 551165 | 265° N.O. 1/2″ Thread | 8039043 |
| 576835 | 215° N.C. 1/2″ Thread | 8039017 |
| 576836 | 220° N.C. 1/2″ Thread | 8039021 |
| 581134 | 210° N.O. 3/8″ Thread | 8039034 |
| 581137 | 225° N.O. 3/8″ Thread | 8039041 |
| 581138 | 230° N.O. 3/8″ Thread | 8039042 |