Royal Enfield 861037 – RH Crankcase Cover Sub-Assembly (Buffing Finish) for Classic 350/500, Bullet 350/500 UCE, Electra 350 UCE & Continental GT 535 – Genuine OEM

The Royal Enfield 861037 – Cover RH Sub-Assembly (Buffing Finish) is the genuine right-hand crankcase / engine cover used across most UCE 350/500 singles and the Continental GT 535. It is the polished aluminium outer cover on the kick-start / clutch side of the engine (not the inner crankcase half).

The official UCE engine parts list shows part number 861037 “Cover RH Sub Assembly” shared by 350UCE (KS), 350UCE (ES), 350 and 500 EFI engines, confirming it as the common RH cover for Classic / Bullet / Electra UCE motors. Dealer catalogues and distributors further map 861037 to Classic 350, Classic 500 EFI, Bullet 350 UCE KS/ES, Bullet 500 UCE and Electra 350 UCE (ES), plus Continental GT 535.

If your bike has suffered a crash, deep scrapes, or cracked RH cover, this sub-assembly lets you restore the engine’s strength and showroom finish without changing internal components. The buffed / polished finish matches original factory styling on chrome / silver-engine models and accepts your existing badges, sight glass, and hardware. Unlike cheap sand-cast copies, this OE part uses correct alloy, machining and sealing surfaces so the gasket seats properly and oil leaks are avoided.

Perfect for restoration builds, accident repairs or high-end detailing jobs on UCE Classics, Bullets, Electras and GT 535.

Key Features 

• Genuine Royal Enfield OEM part – Part No. 861037 – Cover RH Sub-Assembly (Buffing Finish).

• Factory-specified right-hand crankcase / engine outer cover for UCE 350/500 singles and Continental GT 535.

• Confirmed fitment for Classic 350, Classic 500 EFI, Bullet 350 UCE (KS/ES), Bullet 500 UCE, Electra 350 UCE (ES) and Continental GT 535 Euro 3/4 via multiple dealer catalogues.

• Buffed aluminium finish matches OEM polished look on stock engines; ideal for visible restorations.

• Machined sealing surfaces for proper gasket crush and oil-tight installation – avoids seepage common with cheap cast replicas.

• Direct bolt-on replacement using existing fasteners and internals (kick spindle, clutch actuator, oil filter cap, etc.).

• Restores structural integrity if your old cover is cracked around the kick shaft, gear lever, or mounting bosses.

• 100% authentic Royal Enfield supply – ideal for customers who want OEM reliability and resale value, not local casting.

Compatibility Table

(Only models with multi-source confirmation are listed.)

CHECK PART NUMBER BEFORE PURCHASE 

Variants

• 861037 – Cover RH Sub-Assembly (Buffing Finish)

  • Bare RH crankcase outer cover only.

  • No gasket, bolts, kick / gear shafts, filter cap, or badges included.

FAQs

Q1. What is the difference between 861036 and 861037?
861036 is the complete RH cover assembly (with circlip/washer & some internals), while 861037 is the bare RH cover sub-assembly. The UCE engine parts list shows 861037 separately as “Cover RH Sub Assembly”.

Q2. Does this include gasket, bolts, kick shaft or oil filter cap?
No. This listing is for the bare polished cover only. Reuse your existing hardware and gasket, or order those parts separately for a leak-free rebuild.

Q3. Will this fit my BS4 Classic 350 with black engine?
Mechanically many BS4 UCE Classics use the same pattern, but confirmed documentation is strongest for silver / buffed UCE engines up to around 2016. If your bike has a later blacked-out engine or different finish, please match the part number on your old cover or share your VIN/photo with us before ordering.

Q4. Can I use this on a custom engine swap or cafe build?
Yes, as long as the base engine is a UCE 350/500 or GT 535 using the standard UCE crankcases. For non-RE engines this will not fit.

Q5. How should I install it to avoid leaks?
Clean mating surfaces, use a new OEM gasket and torque bolts evenly in a criss-cross pattern to factory specs. Avoid over-tightening – it can warp the cover and cause oil seepage.