• 890040 RHS engine cover assembly, textured black – Thunderbird 350X/500
  • 890040 RHS Engine Cover (Textured Black) – Thunderbird 350X/500 (OEM)
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UNDER THE HOOD

890040 – COVER RH ASSY (Matt/Textured Black, Right-Hand Engine Cover Assembly) for Thunderbird 350X (UCE) & Thunderbird 500 BS3 – Genuine Royal Enfield

890040 – COVER RH ASSY (Matt/Textured Black, Right-Hand Engine Cover Assembly) for Thunderbird 350X (UCE) & Thunderbird 500 BS3 – Genuine Royal Enfield

Rs. 5,140.00
Rs. 5,195.00 Rs. 5,140.00
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Restore that factory blacked-out engine look and proper sealing with the genuine Royal Enfield 890040 – COVER RH ASSY (Matt/Textured Black). This is the right-hand engine/outer crankcase cover assembly supplied in textured black finish. Because it’s OEM, the machined faces, gasket land, screw bosses and bearing/locator interfaces match the original spec—so it bolts up cleanly, maintains sealing, and clears the starter/flywheel hardware without fouling.

We cross-checked multiple trusted sources: official parts finders list “COVER RH ASSY – MATT TEXTURE BLACK – 890040”, and Thunderbird X/Thunderbird fiches include the same part number. Dealer listings also show direct fitment for Thunderbird 350X and Thunderbird 500 (BS3) in matte black. 

Ideal when your RHS cover is scratched, cracked, or corroded, or when converting a chrome/painted RHS cover to the TB X matte black aesthetic. Ship it with a fresh RHS cover gasket & sealant (if specified), and torque fasteners to factory spec for a leak-free result.

Key Features

  • Genuine OE Royal Enfield Right-Hand engine cover assembly – 890040 (Matt/Textured Black). 

  • Exact OE machining and boss locations for proper sealing & alignment.

  • Textured black finish matches Thunderbird X blacked engine parts. 

  • Direct bolt-on on listed models; no fabrication or shimming.

  • Perfect for accident/cosmetic repairs or black-out conversions.

  • Ships in OE-labelled pack; authenticity guaranteed.

Compatibility Table 

Model Platform Emission / Years Finish
Thunderbird 350X UCE 346 cc BS4 (approx. 2018–2020) Matt/Textured Black RHS cover. 
Thunderbird 500 UCE 499 cc BS3 (select years) Matt/Textured Black RHS cover. 

Also fits Classic Models with Black  Magnet Cover Check part number before purchase.

Variants

  • LH textured-black cover family numbers appear around 890037/890039 (left side, different parts). Use only with fiche confirmation for your VIN. 

FAQs

Q1. Is this the “magneto / outer crankcase RHS cover”?
Yes—this is the right-hand outer engine cover assembly in textured black. Names vary by seller, but fiche lists COVER RH ASSY. 

Q2. Does it include the gasket/bolts?
Typically cover assembly only. Add the RHS cover gasket and any oil seal/O-rings specified for your VIN.

Q3. Will it fit my Classic 350 UCE?
Not fiche-confirmed for Classic/Bullet family. Stick to Thunderbird 350X/Thunderbird 500 BS3 unless we VIN-verify otherwise.

Q4. Any install tips?
Drain oil, remove RHS cover evenly, clean gasket land, replace gasket, torque in a criss-cross pattern to spec, and check for leaks after warm-up.

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