( 25 ), Estimated USA Ship Date: These items are shipped from and sold by different sellers. I found this out the hard way when a Jeg's spacer warped on me cracking the baseplate of the carb. While not as good an insulator as wood, it is far more resistant to fuel and chemicals, making a resin spacer more durable. So if your spacers insulation properties are important to you, but at the same time you dont want to deal with any additional maintenance a phenolic resin carb spacer might be perfect for you. The reason the plastic/phenolic HVH spacers say for drag racing use only on them is because they will fail if used at high temperatures for extended periods. Carburetor Spacer Style: Open. Estimated International Ship Date: The Carburetor Spacer fits 4 barrel carbs with a square bore base, such as replacement for 4150/4160, etc.Please read the product information picture before placing an order to avoid buying mistakes. Full content visible, double tap to read brief content. Material: Phenolic Plastic. /*