Holley Centre Hung Nitrophyl Float Kit – Secondary Side – Model 4160 / 4150

Reliable Performance and High-Pressure Durability

The Holley 116-3 Centre Hung Nitrophyl Float is the industry standard for carburettor fuel control. Manufactured from a high-density cellular composite material, this float is designed to provide the perfect balance of buoyancy and durability for both high-performance street and competitive track use.

Performance Application Specifically engineered for centre hung fuel bowls, this unit is the direct replacement for most performance Holley 4150 and 4160 models. It is the go-to choice for enthusiasts who require a lightweight, factory-spec component that is proven to perform under a wide range of operating conditions.

Technical Fitment Note: While this float is designed for centre hung bowls, please check clearances when installing on the secondary side of Model 4160 carburettors (such as the 0-3310C).

If your carburettor is equipped with a secondary metering plate (standard on many 4160s), ensure the float does not contact the plate during its travel, as this can cause the needle to stick and lead to flooding. This float is fully compatible with all Model 4150 carburettors and 4160 models that have been converted to a secondary metering block.

Why Choose Nitrophyl?

• Crush Resistance: Unlike hollow brass floats, which can collapse under extreme fuel pressure, Nitrophyl is a solid-core material. This makes it the preferred choice for high-pressure systems and many forced induction (boosted) applications.

• Consistent Buoyancy: Precision-moulded to maintain a specific weight, ensuring your fuel levels remain stable during hard cornering, heavy braking, and rapid acceleration.

• Modern Fuel Compatibility: Engineered to withstand modern unleaded fuel blends and performance additives.

• Factory Standard: As the original equipment material for many Holley performance carburettors, it offers a guaranteed fit and reliable service life.

Kit Includes:

• 1 x Nitrophyl Centre Hung Float (Hardware, brackets, and pins are typically reused or sold separately—please check your existing carburettor components during installation.)