Royal Enfield 888085 – Drain Pipe Kit CV Carb BS29 for Classic 350, Bullet 350 UCE, Electra 350 UCE & Thunderbird 350 (BS3–BS4 Carb Models)

The Royal Enfield 888085 Drain Pipe Kit – CV Carb BS29 is the genuine drain and vent hose set used on 350cc UCE carburettor models running the BS29 CV carb. Official RE price lists and retailer handbooks describe it as “DRAIN PIPE KIT – CV CARB BS29” with MRP ₹115, confirming that this is an OEM service kit for BS29 carburettors.

RoyalEnfield list 888085 as a genuine Royal Enfield kit, used on Thunderbird 350 Twinspark (TBTS/NTB 350), Bullet 350 UCE Kick & Electric Start, Electra 350 UCE (ES) and Classic 350 UCE. Thunderbird 350 / Thunderbird 350X / Bullet X 350 / Classic 350 – BS3 & BS4. An original TBTS parts catalogue also lists 888085 – Drain Pipe Kit CV Carb BS29 within the Thunderbird 350 Twinspark section.

Ideal for full carburettor overhauls, restoration projects, and preventive maintenance on carb-equipped 350 UCE Royal Enfields.

Key Features 

• Genuine Royal Enfield part – Official description “DRAIN PIPE KIT – CV CARB BS29”, part number 888085 in multiple RE price lists/handbooks.

• Designed for BS29 CV carburettor – Exact routing and diameter matched to the BS29 carb used on 350 UCE carb models (Classic, Bullet, Electra, TBTS).

• Confirmed compatibility for 350 UCE carb bikes – The Spares Company and others map it to TBTS / NTB 350, Bullet 350 UCE KS, Bullet 350 UCE ES, Electra 350 UCE ES and Classic 350.

• Drain + vent/overflow kit – Replaces hardened, cracked or blocked fuel drain and vent hoses, reducing risk of fuel dripping on hot engine or frame.

• Perfect for BS3–BS4 restorations – Specifically mentioned by multiple sellers as suitable for BS3 & BS4 Thunderbird/Bullet/Classic models.

• OEM-grade rubber & fittings – Designed to withstand petrol, vapour and under-tank heat better than generic hose pipe. (Inference from OE fuel-system spec; generic sellers emphasise “high-quality replacement” for Bullet/Thunderbird.)

• Pre-cut lengths and bends – Hoses are shaped to follow factory routing; easier and cleaner than improvising from bulk fuel line. 

• Reduces workshop time – Drop-in replacement kit; just swap old pipes during carb service rather than measuring and cutting individual hoses.

Compatibility Table

✅ Confirmed Fitment 

❌ Not Compatible / Not Listed

• All J-Series models – Classic 350 Reborn, Bullet 350 J-platform, Hunter 350, Meteor 350 – EFI only, no BS29 carb.

• 500cc UCE & CI models – Classic 500, Bullet 500, Thunderbird 500, Machismo, etc. not explicitly mapped to 888085 in official/retailer sources.

• Himalayan / Scram / 650 Twins / 450 platform – different fuel systems, not BS29.

(If a customer wants to use it on any unlisted model, advise them to match carb type (BS29) and existing hose layout before buying.)

Variants

• Single OEM kit

  • Part Number: 888085

  • Description: Drain Pipe Kit – CV Carb BS29 / Drain and Vent Pipe Kit – BS29

  • Quantity: 1 kit (includes multiple hoses as per OE photo – exact contents depend on batch).

No LH/RH or colour variants under this part number.

FAQs

Q1. What does the 888085 Drain Pipe Kit actually do?
It replaces the fuel bowl drain hose and associated vent/overflow hoses on BS29 CV carburettors. These pipes route any overflow or drained fuel safely downwards, away from the engine, frame and exhaust. Over time, the original hoses crack or harden – this kit restores safe, leak-free routing.

Q2. Which Royal Enfield models is 888085 confirmed for?
Based on multiple dealer listings and a TBTS parts catalogue, 888085 is confirmed for Thunderbird 350 / Thunderbird 350X (BS3–BS4), Bullet 350 UCE KS & ES, Electra 350 UCE ES and Classic 350 UCE carb models, including Bullet X 350.

Q3. Does this fit Classic 350 Reborn (J-Series) or other EFI models?
No. J-Series and EFI bikes use a different fuel system without BS29 carburettors. 888085 is only for carb-equipped 350 UCE models listed in the compatibility table.

Q4. Can I use generic fuel pipe instead of this kit?
You can, but you’ll lose the factory-correct routing and pre-formed bends. The OEM kit is pre-cut and shaped for BS29 carbs on 350 UCE bikes, which makes installation faster and reduces the chance of pinched or kinked hoses compared to generic line. (Supported by OE-style product photos across sellers.)

Q5. When should I replace the drain and vent pipes?
Replace them whenever you notice cracks, hardening, fuel smell around the carb, fuel staining on the crankcase, or during a complete carb overhaul. On older BS3/BS4 bikes it’s smart to change them proactively with every major service interval.