.130in Needle & Seat Assembly - Viton

The .130in Needle & Seat Assembly – Viton by Holley is a critical carburetor component designed for fuel metering precision in performance and street engines. This assembly controls the flow of gasoline into the carburetor bowl, making it essential for proper fuel delivery, engine idle quality, and overall drivability. Whether you're rebuilding a vintage muscle car, tuning a custom hot rod, or maintaining high-performance equipment, a quality needle and seat directly impacts engine responsiveness and fuel economy.

The Viton material used in this assembly offers superior chemical resistance and durability compared to traditional rubber components, ensuring consistent sealing even under sustained heat and aggressive fuel chemistry. The .130-inch specification refers to the needle diameter, a critical dimension that determines proper seating and flow rate within Holley carburetors and compatible systems. Viton's elastomer properties resist fuel degradation and heat cycling, reducing the need for frequent replacement and maintaining a tight seal that prevents fuel leakage and vapor loss during operation.

Carburetor rebuilds and fuel system maintenance require exact component compatibility, and Holley's OEM engineering ensures this assembly functions across their broad lineup of carburetors used in street rods, race applications, and restoration projects. Technicians and enthusiasts rely on Holley needle and seat assemblies for reliable fuel control, especially in high-vibration or extreme-temperature environments where seal integrity is non-negotiable. Installation is straightforward during carburetor service—proper seating and correct orientation ensure immediate performance improvement and stable idle characteristics after rebuild.