🔧 UCAL UCD29‑16 Carb – Thunderbird 350 BS4 — Product Description
Overview:
The UCAL Bike Carburetor for Royal Enfield Thunderbird 350CC BS4 (also known as the UCD29-16 carburettor assembly, OE reference 576583/C) is a genuine UCAL-made carburetor designed specifically for the BS4-era Royal Enfield Thunderbird 350 with a carburetted UCE engine. It serves as a direct replacement for the original fuel delivery carburetor, restoring proper air-fuel mixing, smooth throttle response, and stable idle performance when the old or worn unit needs replacement.
Key Features:
🔹 OEM-Grade Quality – Manufactured by UCAL to meet strict precision and durability standards; this carburetor matches the specifications used in BS4 Thunderbird 350 production.
🔹 Accurate Air-Fuel Mixture Control – Precisely mixes fuel and air in correct ratios across engine speeds, improving combustion efficiency and engine responsiveness.
🔹 Direct Fit Replacement – Designed for plug-and-play installation into the bike’s existing intake manifold and linkage, eliminating the need for modifications.
🔹 High-Quality Construction – Built from durable aluminum and precision-machined internal passages for consistent performance and long service life.
🔹 29 mm Venturi Size – Sized for optimal airflow and fuel delivery suited to the 346 cc UCE BS4 engine characteristics.
Benefits:
🏍️ Improved Start-up & Idle Stability – Helps reduce rough starts, unstable idling, and hesitation compared to worn carburetors.
⚡ Responsive Throttle Performance – Delivers smoother throttle response during urban and highway riding.
⛽ Fuel Efficiency – Optimised air-fuel fulcrum can help maintain efficient fuel consumption when properly tuned.
🔩 Reliable Everyday Use – Designed for consistent performance across varied riding conditions.
Compatibility:
✔ Royal Enfield Thunderbird 350 UCE BS4 (carburetted version, approx. 2017–2019) – direct fit.
📦 What’s Included
1 × UCAL Carburetor Assembly (UCD29-16)
(Note: Air filter, intake manifold boot, and throttle/choke cables are typically not included and may need to be re-used or replaced separately.)
🛠️ Why Replace Your Carburetor?
If your bike has symptoms like hard starts, rough idling, poor throttle response, or fuel leakage, replacing the old carburetor with a fresh UCAL unit restores performance close to factory levels and resolves common fuel-delivery issues in carburetted engines.
