SRS EXHAUSTS 4-1 HEADER STAINLESS STEEL (HONDA D-SERIES D14 D15 D16)SRS manifold 4 1 stainless steel D series This SRS manifold 4 1 stainless steel is made for the D series engines, which can be found in various Honda Civic and CRX models. 4 1 = More power at high rpm Including connection lambda probe Because the tubes on a 4 1 manifold lie above each other, this manifold is closer to the ground than a 4 2 1 model. Make sure, on the 88 91 models, that you have enough space with the subframe. And keep in mind that you