Maximize efficiency by recovering engine waste heat via our double-wall heat exchanger. This kit will use engine coolant to heat the system coolant. Adding a pump enables engine pre-heating, ensuring a smooth start in any weather. Caution: The engine kit is designed to connect to the vehicles engine cooling system. We recommend that you check the vehicle manufactures warranty relating to engine pre-heat, add heat, and auxiliary heaters to be sure there are no restrictions. Contents Qty SKU Description 1 P13-200A Heat Exchanger, Double Wall PlateDimensions w/ bracket: W=2" L=7" 3/4 H=4" 7/8 1 P13-201 Bracket, DW Heat Exchanger 2 P22-100 1/2" MPT to 3/4" Barb 2 P22-102 1/2" MPT to 3/4" Barb 90° 2 P23-102 3/4" × 3/4" Nylon Hose Barb 90 10 P14-101 3/4" Spring Clamp 1 P14-103 3/4" Molded Rubber 90°- Long 1 P23-100 3/4" Hose Splice - straight