Royal Enfield 1990236 Silver Oil Filler Cap – Machined Billet – 650 Twins, Himalayan / Scram 411, J-Series 350 & 450 Series (GMA Accessory)

Royal Enfield part number 1990236 is the genuine Silver Oil Filler Cap, a machined billet aluminium GMA accessory compatible with a wide range of modern Royal Enfield motorcycles, including 650 Twins, Himalayan / Scram 411, J-Series 350 models and newer 450/650 platforms such as Himalayan 450, Scram 440 and Guerrilla 450.

Official GMA pages describe 1990236 as a “Silver Oil Filler Cap” machined from billet aluminium with a separate branded infill that is fitted last, so the Royal Enfield logo always sits perfectly upright. Dealers like Riders Junction, SAP Motors and others confirm fitment for Interceptor 650, Continental GT 650, Himalayan / Scram 411, Classic 350 (J-Series), Bullet 350 (J-Series), Hunter 350, Meteor 350, Goan Classic 350, Classic 650, Bear 650, Super Meteor 650, Shotgun 650, Scram 440 and Guerrilla 450, with typical installation time of about 4–5 minutes.

Unlike generic caps sold on marketplaces, this is a 100% genuine Royal Enfield accessory: thread pitch, sealing face and depth are matched to OEM specifications, so oil level and breather behaviour remain correct on supported engines. The silver anodised finish adds a crisp factory-custom look to the engine case and pairs perfectly with polished, chrome or brushed components.

If your bike appears in the compatibility table below, 1990236 is the correct silver oil filler cap upgrade; if not, we recommend checking your VIN on the Royal Enfield GMA portal or speaking to us before ordering to avoid returns.

Key Features 

• Genuine Royal Enfield GMA accessory – Part No. 1990236, officially described as Silver Oil Filler Cap.

• Billet aluminium construction, precision machined for accurate fit and long-term durability around hot engine areas.

• Silver anodised finish for a premium, OE-custom look that complements engine side covers and crankcases.

• Two-piece design with separate branded logo insert so the Royal Enfield logo can always be aligned upright after tightening – a key detail most competitor listings never explain.

• Verified compatibility across 650 Twins, Himalayan / Scram 411, J-Series 350 family, Classic 650/Bear 650 and Sherpa-based 450s (see detailed table).

• Typical fitting time ~4–5 minutes, no special tools required – simply remove old cap and install the new one with the supplied/stock O-ring.
  

• Designed as a direct replacement for the stock oil filler cap – no modification, no adapters, and no impact on oil capacity when used on listed models.

• Ideal finishing touch when you’ve already upgraded guards, mirrors, levers or other GMA accessories, and want a neat, functional detail part that stands out in close-up photos.

Compatibility Table

(Only models with confirmation from Royal Enfield GMA + at least one dealer/parts source are included.)

650 Twin & New 650 Platforms

Himalayan / Scram Platforms

J-Series 350 Family

If your bike is not in this table, treat fitment as not confirmed and verify via VIN on the Royal Enfield GMA portal or with your RE dealer before ordering.

Variants

For this SKU, keep it as the silver version and cross-link to your black cap (1990218) separately.

• Variant Name:

  • Silver – Part No. 1990236 (GMA Silver Oil Filler Cap)

What’s in the Box 

• 1 × Genuine Royal Enfield Silver Oil Filler Cap – Part No. 1990236

• (O-ring / seal as per OEM packaging; reuse your stock seal if not supplied.)

FAQs

Q1. What is Royal Enfield part number 1990236?
Royal Enfield part number 1990236 is the Silver Oil Filler Cap, a genuine GMA accessory machined from billet aluminium with a silver finish and a separate logo insert that keeps the Royal Enfield badge correctly aligned.

Q2. Which bikes are compatible with the 1990236 Silver Oil Filler Cap?
Cross-checked RE GMA + top dealers show compatibility with: Interceptor 650, Continental GT 650, Himalayan 410/411, Scram 411, Himalayan 450, Scram 440, Guerrilla 450, Classic 650, Bear 650, Super Meteor 650, Shotgun 650, Classic 350 (J-Series), Bullet 350 (J-Series), Hunter 350, Meteor 350 and Goan Classic 350.

Q3. What is the difference between 1990236 and 1990218?
Both are genuine GMA oil filler caps with the same basic design and fitment; 1990236 is the Silver Oil Filler Cap, while 1990218 is the Black Oil Filler Cap. Many sellers and the official spec sheet list them together as silver/black options under the same model set.

Q4. Will this cap affect my oil level or engine performance?
No. It directly replaces the stock filler cap on supported models. When correctly installed with the proper O-ring, it does not change oil capacity or engine tune; it is primarily a styling and quality upgrade.

Q5. Is this a universal Royal Enfield oil cap?
No. It fits many current RE models but not every older Bullet/Thunderbird/Electra. If your motorcycle is outside the compatibility list, please confirm via VIN and parts catalogue before purchasing to avoid returns.