Moroso 65015 Carburetor Spacer 1/2 Inch Wood Open Plenum 4150/4160

The Moroso 65015 is a 1/2-inch thick open plenum carburetor spacer designed for 4150 and 4160-style carburetors. Constructed from wood, this spacer helps insulate the carburetor from engine heat, reducing fuel vaporization and improving performance in high-temperature conditions.

Key Features:

• 1/2-inch (0.5 inch) spacer height for modest plenum volume increase
• Open plenum design improves air distribution to all cylinders
• Wood construction provides excellent thermal insulation properties
• Compatible with square-bore 4150 and 4160 Holley-style carburetors
• Helps reduce heat soak and fuel percolation issues
• Easy installation between carburetor and intake manifold

This carburetor spacer is ideal for street and performance applications where maintaining consistent fuel delivery and reducing heat transfer to the carburetor is critical. The open plenum configuration allows for improved airflow while the wood material acts as a heat barrier between the intake manifold and carburetor base.