Item 4360037 has must read information.
: This is a two pole pressure switch. Note: Early models were outfitted with a three pole pressure switch (p/n 4360405) which is no longer available. If looking for a three pole pressure switch, please order kit p/n 2910503 for replacement. 

SWITCH, PRESSURE

$23.63
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4360037

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: 2  : 2  : 2  : 0.16

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EA
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SWITCH, PRESSURE - 4360037