(quoted from post at 16:40:22 01/09/15) It's the same part; new number.
More than likely, it's a 160* t-stat. Lots of folks (myself included) prefer a 180* t-stat.
Try A&I part # A-11C15 or Beck/Arnley part # 143-0024 or NAPA part number THM 184 for 180* in hose t-stats.
The car parts store folks are helpless w/o vehicle make/model/year info. Some can/will actually search on the number & cross reference, but more often than not, you will just get a dumb look. HINT: find a clerk near the age of your tractor.....
Try telling them that the t-stat is for your 1977 Renault R12 1.6L L4.
All of my 180* t-stats are A&I A-11C15’s. They are a tight fit in an N hose, but they will fit. I’ve never used the Beck/Arnley or NAPA t-stats so I can’t help you w/ anything there but the part numbers.
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