Replacement Seakamp Engineering transmission oil cooler for Mercruiser 862837T measures 16 inches overall length with 1 1/4 inch water hose connections. Oil Cooler Mercruiser Transmission | Seakamp 862837T Seakamp Mercruiser replacement oil cooler 13 inch cooling core bundle length 16 inches overall length 1 1/4 inch water connections 1/2 inch inverted flare #8 hose oil line fittings Replaces Mercruiser 862837T