Cummins T-stat part number?
Registered User
Joined: Jun 2007
Posts: 409
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From: exeter,ca
Here are the part numbers i have when i purchased my thermostat and gasket back in april. This was for my 1990...Hope it helps..
Thermostat part#=3972071 Price $34.80
Gasket part#=3923331 Price $6.36
Thermostat part#=3972071 Price $34.80
Gasket part#=3923331 Price $6.36
Registered User
Joined: Mar 2008
Posts: 4,389
Likes: 114
From: Orange County, California
check out this service bulletin (if it applies to your engine) and order the thermostat kit from cummins. P/N: 3802968
Overheating or No Heat Condition
Overheating or No Heat Condition
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