Edelbrock Heat Exchanger, Single Pass, Single Row, 31, 000 btu/hr., 22 " W X 16.

UNIVERSAL HEAT EXCHANGERS 
Edelbrock offers a wide selection of Universal Heat Exchangers to work with the E-Force Universal or Enforcer Supercharger system. These heat exchangers offer reliability and durable construction for high performance street applications. Each heat exchanger includes a 3/4" barbed inlet and outlet for plumbing, along with M6x1.0 threaded bungs for mounting (except #15568 & #15549 which have brackets).