Water Meth Plates

A water meth injection plate gives your nozzles a clean, precise home. The plate installs between the throttle body and intake manifold and provides threaded nozzle ports right where the charge air enters the plenum, so there is no drilling and no permanent modification to your intake. Each plate is machined for a specific flange, so shop by year, make, model, and engine to confirm fitment. Plates mount the nozzle only. You will still need a pump, controller, lines, nozzles, and a check valve or solenoid to complete a water methanol injection system.

• Confirm the flange. Plates are platform-specific. Bolt pattern, bore size, and gasket shape must match your throttle body and manifold, so always verify fitment by exact model year and engine.
• Check port count and size. Single-port plates suit most street builds. Multi-port plates allow larger total flow or staged nozzles on higher output setups. Match port thread to your nozzles.
• Plan for stack height. The plate adds thickness between the throttle body and manifold. Expect to need longer bolts or studs, and check clearance for intake couplers, sensors, and the throttle body connector. [VERIFY: hardware included per product]
• Look at material and sealing. Most plates are machined aluminum. Gaskets, O-rings, and thread sealant should be methanol compatible to prevent leaks over time.
• Account for vacuum. Because the nozzle sits after the throttle plate on most designs, it sees manifold vacuum at idle and cruise. A check valve or solenoid in the line keeps fluid from siphoning into the engine when the system is off.