Review on Derale 15731 Thermostatic Sandwich Adapter by Robert Moloney

I was hoping this would fit my 2004 Tahoe 5.3L V8. Unfortunately, there was not enough space for this adapter and the hoses connected to it. Instead I used a Dorman 625-168 OEM adapter. Just buy this Dorman adapter, 10ft hose and a Derale oil cooler to make this kit work! I use a PL25288 filter with this kit along with a 6 way Derale oil cooler that is installed on my transmission cooler (not much room to put it elsewhere). I also cut out the Chevy badging to allow airflow to both radiators (factory setting blocks 90% of airflow). Order the filter you typically use and measure its gasket diameter, then select the correct size adapter for your cooling system. Most car engines should work with this 15731 adapter, but always measure twice and order once!