Upgrade your BS3 350 UCE to today’s fuel with the genuine Royal Enfield RLT00241/A – BS29 Carburettor, validated for E20 blends. This is the factory carburettor assembly for BS3 UCE 350 models and is the modern replacement for earlier BS3 BS29 units (e.g., 570282 series). Labels and dealer communications circulating in the trade identify RLT00241/A as “E20 Carburettor Assy – UCE 350 BS3,” intended for Classic 350, Bullet 350, Electra 350 and Thunderbird 350 carb models. 

Compared to legacy BS3 carbs, RLT00241/A keeps the familiar BS29 geometry and OE jet circuits while carrying E20 readiness—helpful where pump fuel ethanol content is rising. It’s plug-and-play on BS3 UCE 350s: bolts to the stock manifold and air box, and reuses OE throttle/choke cables. For BS4 UCE 350s, use the E20-ready RLT00240/A or the E20 retrofit kit listed by official parts portals; do not mix BS3/BS4 assemblies without fiche confirmation. 

Every unit from Under The Hood is QC-checked, shipped in OE-labelled packaging, billed with a GST invoice, and packed safely to reach you in perfect condition.

Key Features

• E20-compatible BS29 carburettor for BS3 UCE 350 – part RLT00241/A.

• Direct plug-and-play with OE manifold, air box, and cables on BS3.

• Retains OE jetting philosophy/float height for clean idle & crisp mid-range.

• Genuine casting & machining for consistent atomization (avoids copy-cat issues).

• Future-proof for rising ethanol blends on legacy BS3 carb bikes.

• Backed by E20 programme parts/kit listings for UCE 350 platforms. 

Compatibility Table 

Explicit exclusions: BS4 UCE (use RLT00240/A or official E20 BS4 kit), 

Variants

• RLT00241/A – BS29 Carb (E20, BS3 UCE 350) (this item)

• Related BS4 option: RLT00240/A – BS29 Carb (E10/E20, BS4 UCE 350) (listed separately, cross-link on page). 

FAQs

Q1. What does RLT00241/A replace?
Earlier BS3 BS29 carb assemblies (e.g., 570282 series). RLT00241/A is the E20-capable OE assembly for BS3 UCE 350. Evidence appears in current OE-labelled stock shared within the trade.

Q2. Will it fit my BS4 bike?
No—BS4 uses different calibration/ancillaries. For BS4, use RLT00240/A or the official E20 kit (KLT00002/A) shown on the parts portal.

Q3. Do I need new cables or manifold?
On BS3 UCE 350: No—it’s plug-and-play with OE manifold/air box/cables.

Q4. Do I need to re-jet?
It ships to OE spec. Most stock BS3 bikes won’t need changes; fine-tune only for altitude or intake/exhaust mods.

Q5. Is this better than aftermarket carbs/kits?
Yes—genuine casting tolerances and passage alignment reduce tuning hassles and leaks common with replicas.