Enhance your engine's performance with this precision-engineered 1/4 inch carburetor spacer designed specifically for Holley 4150/4160 carburetors. This four-hole spacer helps optimize air-fuel mixture distribution and can improve throttle response. Crafted with durability in mind, the phenolic construction provides excellent heat insulation properties, helping maintain cooler fuel temperatures for better performance. The spacer features precisely machined openings and mounting holes for a secure fit. This component acts as a thermal barrier between your carburetor and intake manifold, potentially helping to prevent vapor lock in high-temperature conditions. Perfect for automotive enthusiasts looking to fine-tune their engine's performance, this spacer is a direct replacement for Canton Racing 85-154 model. Installation is straightforward with standard mounting hardware, making it an excellent choice for both professional mechanics and DIY car enthusiasts.