SNOW PERFORMANCE Carb Spacer Plate, 4150/Holley 0.4 kg

CNC-machined 5/8" adapter plate for water-methanol injection on 4150-style carburetors. Fits Holley, Edelbrock, Carter.

Efficient water-methanol integration for classic 4150-style carburetors - perfect for racing and performance setups.

This precision-machined adapter plate allows you to easily install a water-methanol injection system between your carburetor and intake manifold. Designed to fit all standard 4-barrel carburetors using the 4150 flange (Holley, Edelbrock, Carter, etc.), it supports up to four injection nozzles for even distribution across all cylinders.

Made from durable, hard-anodized T6061 aluminum and CNC-machined for optimal fit and reliability under high-heat, high-boost conditions.

Key Features:

• Fits all 4150-style 4-barrel carburetors (Holley, Edelbrock, Carter)
• Supports up to 4 water-meth nozzles - customizable injection setup
• Precision 5/8" (15.8 mm) plate thickness - stable under heat
• Ideal for Boost Cooler and other water-methanol systems
• Clean, reversible installation with no permanent modifications

Technical Details:

• Material: CNC-machined T6061 aluminum, hard anodized
• Plate thickness: 5/8" (15.8 mm)
• Ports: 4 × 1/8" NPT27 for Boost Cooler Nozzles
• Carb compatibility: 4150-style / 4-barrel
• Mounting Hardware and Gaskets included

Note:

Matching injection nozzles and the Boost Cooler system are sold separately. Mounting injector nozzle below throttle plate requires a Solenoid Upgrade (Item No. SP30105).