BMC Air Filter FM01210 for Royal Enfield Himalayan 450 & Guerrilla 450 (Sherpa 450/452) – Washable High-Flow Replacement | OEM Ref RLY00037

The BMC FM01210 is a premium washable, reusable, oiled cotton gauze air filter engineered as a direct replacement in your bike’s stock airbox—designed specifically for Royal Enfield’s new Himalayan 450 and Guerrilla 450 platform (Sherpa engine family). 

Unlike many competitor listings that stop at “High flow filter” and skip critical details, this page includes the exact BMC part number, OEM cross reference, and official technical dimensions so buyers can verify fitment before ordering. BMC lists OEM Cross Reference: ROYAL ENFIELD RLY00037 for FM01210 and provides the key measurements (120/145/105 mm). 

What it is: BMC branded performance replacement air filter (aftermarket).
What it is not: Not a Royal Enfield OEM paper element; and not compatible with Himalayan 411/Scram 411, 350 J-Series, or 650 Twins (see exclusions).

For maximum accuracy and fewer returns, fitment check available on WhatsApp—share your bike model + year (and an airbox photo if possible).

Key Features 

• Part Number: BMC FM01210 

• Filter type: Cylindrical replacement filter for stock airbox 

• Filter material: Oiled Cotton Gauze 

• Washable & reusable: Yes 

• Dimensions (BMC): ID/Inner base 120 mm, OD/Outer base 145 mm, Height 105 mm 

• OEM Cross Reference: Royal Enfield RLY00037
  

Best for: touring, dusty Indian conditions (when serviced correctly), riders upgrading intake without airbox modification.

Compatibility Table 

Explicit Exclusions (to reduce wrong orders)

• ❌ Not compatible with Himalayan 411 / Scram 411 (LS410) — those use a different filter family (e.g., FM966/08 for those models). 

• ❌ Not compatible with Classic 350 Reborn / Meteor 350 / Hunter 350 (J-Series 350) — different intake/filter fitment.

• ❌ Not compatible with Interceptor 650 / Continental GT 650 / Super Meteor 650 — different filter.

If your registration year and model year differ (common in India), ❓Verify fitment before ordering (WhatsApp check).

Variants 

• No variants for this listing: single SKU FM01210. 

What’s in the Box

• 1 × BMC Air Filter (FM01210) 

Installation Notes 

Typical tools: screwdriver/Allen keys + clean microfiber cloth.

Fitment notes:

1. Open the airbox carefully; prevent dust from dropping into the intake.

2. Clean the airbox seating surface.

3. Insert FM01210 evenly; ensure full seal all around.

4. Refit the airbox cover and tighten evenly.

Warnings:

• This is an oiled cotton gauze filter; after cleaning, do not over-oil (can restrict airflow). 

• For dusty rides/off-road, inspect more often and regenerate properly using a suitable filter cleaning/oiling process.

FAQs 

Q1. Does BMC FM01210 fit the Royal Enfield Himalayan 450?
Yes. BMC’s application listing shows FM01210 for Royal Enfield Himalayan 450 (2024). 

Q2. Does BMC FM01210 fit the Royal Enfield Guerrilla 450?
Yes. BMC’s application listing shows FM01210 for Royal Enfield Guerrilla 450 (2024). 

Q3. Is FM01210 an OEM (Royal Enfield) air filter?
No. It is a BMC aftermarket performance replacement. BMC provides OEM cross reference: Royal Enfield RLY00037 for matching.

Q4. What is included in the box?
BMC lists box content: 1 air filter for FM01210. 

Q5. Is FM01210 washable and reusable?
Yes—BMC specifies Lavabile (Washable): Yes. 

Q6. What are the exact FM01210 dimensions?
BMC lists inner base 120 mm, outer base 145 mm, height 105 mm.

Q7. Will this require airbox modification?
No—this is a replacement filter designed to fit inside the original airbox for the confirmed models. 

Q8. Does it fit Himalayan 411 / Scram 411 (LS410)?
No. Those models use a different filter; FM01210 is listed for the 450 platform only. 

Q9. What warranty does BMC provide?
BMC lists a 2 Years Limited warranty for FM01210.

Q10. What if I’m unsure about my bike’s exact variant/year?
Message us—Fitment check available on WhatsApp. Share your model, year, and an airbox photo for confirmation before dispatch.