The Imperial Maxi-Cool XL's plate and fin design offer excellent cooling efficiency in a compact, space-efficient design. Product Features:Imperial Rapid-Cool plate and fin transmission coolerSize: 3/4 x 11 x 9-1/2Pickup trucks and vans, class C motor homes, travel trailers to 24'GVWR up to 24,000 lbs.; towing up to 5,000 lbs.