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John P · 22nd February 2008, 07:17 AM

I use this Earls thermostat on my engine. It has an internal bypass to route cold oil back to the filter. It accepts AN -10 O ring fittings, which are supposed to have higher flow rates than NPT fittings. The Summit racing part number is: EAR-501ERL

22nd February 2008, 07:17 AM	#3 (permalink)
John P Jay P Rookie Join Date: Oct 2007 Location: California Posts: 93	Re: Oil cooler thermostat? I use this Earls thermostat on my engine. It has an internal bypass to route cold oil back to the filter. It accepts AN -10 O ring fittings, which are supposed to have higher flow rates than NPT fittings. The Summit racing part number is: EAR-501ERL