Holley 1901 4000 Teapot Carburetor Float FL126

Holley 2140 2 barrel, 4000 4 barrel, teapot carburetor float.

Upgrade your Holley 1901 / 2140 / 4000-series 4-barrel “teapot” carburetor with this brass FL126 float, precision-engineered to restore reliable fuel-level control and prevent flooding or lean-run issues.

Key Features

• OEM-style fit: Designed specifically for Holley 1901, 2140, 4000, and 885 carburetors

• Brass construction: Fully ethanol-resistant and more durable than original plastic or nitrophyl floats

• New, current production: Freshly manufactured with quality control testing

• Exact OEM profile: No adjustment of float pontoons (points) – adjust only via the lever per factory instructions

• Reliable fuel metering: Brass weight ensures stable float action and accurate fuel level

• In-stock availability: Ships quickly for prompt rebuilds

Applications

The FL126 float is ideal for:

• Holley 1901, 2140, 4000, and 885-series “teapot” carburetors

• Frequently used on 1950s–’60s Ford, Mercury, Lincoln, and Autocar trucks

• Vehicles with teapot-style float bowl mounted above the four primaries

Why Choose Brass FL126?

• Ethanol-ready and leak-resistant: Brass won’t absorb fuel or swell over time.

• Precision performance: Maintains consistent float height for improved idle stability and drivability.

• Durable and long-lasting: More rugged than plastic or resin float alternatives.

• Simple, direct swap-in: No modifications required—if it’s your float type, it drops right in.

Frequently Asked Questions

1. What carburetors does the FL126 float fit?
This float is designed for Holley “teapot” style carbs, including 1901, 2140, 4000, and 885-series models. Always confirm your carb model before ordering.

2. Why brass and not nitrophyl or plastic?
Brass floats are naturally ethanol-resistant, durable, and won’t swell or degrade like plastic or nitrophyl options.

3. How should I adjust float height?
Do not bend the float pontoons. Instead, adjust float height using the lever per the factory rebuild manual. Bending floats may damage them.

4. Is this float brand new or remanufactured?
It’s the only brass FL126 available in new, current production, not used or leftover stock.

5. Will this prevent flooding or engine lean at idle?
Yes—proper float height control helps prevent both fuel overflow and insufficient fuel level at idle.

6. How do I know if this is the right float for me?
Ensure your carb is a teapot style with bowl above the primaries (e.g. Holley 4000). If unsure, reference the carb model stamping or contact us.

7. Is it in stock and how soon will it ship?
Yes—it’s listed as In Stock and typically ships same-day if ordered by 12 PM PST.

8. What does shipping cost?
Shipping is calculated at checkout, based on your location and preferred method. View full details on our [Shipping Info Page].

9. What else should I replace during a rebuild?
Along with the float, it’s wise to replace the float pin, needle & seat, gaskets, and check balls for a full and proper rebuild.

Upgrade your classic carb rebuild with this precision-engineered FL126 brass float—restoring stable fuel levels and reliable street performance with ease.