4ZE1 Turbo Exhaust Manifold 4ZE1 mild steel turbo manifold with T25 Flange. Designed to fit Isuzu 4Z series engines with round port heads such as: 4ZB1, 4ZC1, 4ZD1 and 4ZE1. Holden Jackaroo, Rodeo, Piazza, Shuttle Isuzu Trooper, Impulse, Amigo Runner lengths within +/-5mm... MSRP: Was: Now: $1,380.00 - $1,383.00 Choose Options