2JZ GE - Billet Lower Water Neck (Rotated)
 
Built for the GE swap community.
 
Turboing a 2JZ GE means constantly working around parts that were never designed with a manifold in the way - and the factory lower water neck is one of the first things that gets in the way. The usual fix is an adapter plate bolted between the neck and the block, adding a joint, a gasket, and one more thing that can leak.
 
The Ichiban Engineering 2JZ GE lower water neck skips the adapter entirely. The rotation is built into the casting itself, so the outlet already clears the manifold the day it goes on the engine - no extra hardware between it and the block.
 
CNC-machined from 6061-T6 billet aluminum and CAD-engineered specifically around 2JZ GE geometry (not adapted from the GTE part), it holds tighter tolerances and a cleaner seal than anything pieced together with an adapter plate.
 
Key Features
 
GE-Specific Geometry
Designed from the ground up for the 2JZ GE block - not a GTE part with a spacer.
Modular -16 / -20AN Outlet System
Base -16 ORB port, standard hose-style neck, or -20AN outlet - swap between them on the same housing as your setup evolves.
Built-In Rotation
No adapter plate, no extra gasket, no extra leak point.
6061-T6 Billet Aluminum
CNC machined for durability that outlasts the factory cast unit.
Anodized Finish Options
Available in a full range of colors to match your build.
 
Whether you're turboing your first 2JZ GE or refining a build that's already boosted, this is the lower neck that was actually designed for it.
 
** Building on a 2JZ or 1JZ GTE? This part won't fit - check our dedicated GTE lower water neck instead. **
 
⚙️ Fits 2JZ GE VVTi and Non-VVTi
📧 For technical questions or custom requests contact sales@ichiban.engineering