Oil cooler 1-1/2 x 12 x 15-1/8. Extra heavy-duty. Designed for severe-duty transmission oil cooling applications. Product Features:Imperial Econo-Kool tube and fin transmission coolerSize: 1-1/2 x 12 x 15 1/8Severe-duty transmission oil cooling applicationsTowing with class A motor home or towing more than 10,000 lbs.