Edelbrock heat exchanger part 15406 is a single passtwo row design and delivers 22,000 btuhr Includes a 34in. barbed inlet and outlet for plumbing, along with M6x1.0 threaded bungs for mounting. Heat exchanger part 15406 is a Single PassTwo Row Universal Heat Exchanger with the following dimensions (26.5in. W x 5in. H x 2.62in. D) and 6 threaded bungs. Edelbrock offers a wide selection of Universal Heat Exchangers to work with the Edelbrock Universal or Enforcer Supercharger systems. Edelbrock heat exchangers offer reliability and durable construction for high Performance's street applications.