Run Cooler, Last Longer B&M Hi-Tek Engine Oil and Automatic Transmission Coolers are the newest addition in B&M's high performance heat exchangers line-up. Featured with a high-quality 12-volt electric fan, built-in mounting brackets and 175-degree thermal temperature switch to keep an eye on fluid temperature. Fin and plate cores on these coolers are the strongest and most efficient of B&M’s line-up, so these coolers can be placed in tighter spaces where less natural air flow is present. Hi-Tek Coolers are suitable for automatic transmission fluid, engine oil, differential fluid, and power steering fluid. Perfect for RV’s and tow vehicles, circle track racing, road racing, off-road, even monster trucks and rock crawling.