Air Filter Box Assembly (Airbox / Intake Filter Housing) for Royal Enfield Guerrilla 450 (2024–On) – RLY00017/D

The Royal Enfield Air Filter Box Assembly (Airbox) is the sealed intake housing that holds the air filter element and routes clean air to the throttle body. If your airbox is cracked, warped, leaking, missing mounting tabs, or letting dust bypass the filter, your 450’s fueling and engine protection suffer. This is a genuine OEM assembly (RLY00017/D) designed for correct sealing, sensor/duct alignment, and factory fit—important on modern fuel-injected platforms where air leaks can trigger rough idle, poor throttle response, and abnormal intake noise.

Common real-world use cases:

• Replacing a broken airbox after a fall/impact

• Fixing unfiltered air entry (dust marks past the filter, loose joints, damaged sealing edge)

• Restoring stock fit after improper aftermarket modifications

Also searched as: airbox, air filter box, intake box, air filter housing, air intake filter box, induction box.

Before you buy: Confirm your bike model/platform and match the mounting points & duct layout with your existing airbox photo to avoid wrong orders.

Key Features 

• Genuine Royal Enfield Air Filter Box Assembly (complete housing)

• Part Number: RLY00017/D (latest suffix “/D”)

• Restores correct sealed intake path to protect engine from dust ingress

• Maintains proper duct alignment and factory fit (no forced fitting)

• Helps resolve symptoms caused by intake leaks: uneven idle, hesitation, abnormal intake roar

• Ideal replacement when tabs/clips are broken or housing is cracked

• Compatible with the Guerrilla 450 (2024–On) as per multiple dealer catalogues

• Recommended to inspect/replace air filter element separately if contaminated

Compatibility Table 

Explicit exclusions 

• Not for Himalayan 411 / Scram 411

• Not for 350 J-Series (Classic Reborn / Meteor / Hunter / Bullet 350)

• Not for 650 Twins (Interceptor / Continental GT / Super Meteor / Shotgun)
  (These platforms use different intake assemblies.)

Variants

No variants.

FAQs 

Q1 (Fitment): How do I confirm this air filter box fits my bike?
Match your bike model (Guerrilla 450) and compare your existing airbox with this part number RLY00017/D. Best method: share a photo of your current airbox + your VIN (last 6 digits) with us for confirmation.

Q2 (Fitment): Does this fit Himalayan 450 as well?
At the time of publishing, Himalayan 450 fitment for RLY00017/D is kept ❓ Unverified due to insufficient accessible confirmation for that mapping. If you have a Himalayan 450, order only after VIN/photo verification.

Q3 (Comparison): Why OEM airbox instead of welding/repairing the old one?
Because even small cracks/warps can cause air leaks and dust bypass, and repaired plastics often don’t restore factory sealing. OEM ensures correct mating surfaces, rigidity, and alignment.

Q4 (Installation): What should I watch out for during installation?
Avoid over-tightening bolts into plastic mounts, and ensure all ducts/clamps sit fully. After installation, check for intake leaks and confirm the air filter element is properly seated.

Q5 (Symptoms): What problems can a damaged airbox cause?
Rough/unstable idle, hesitation, intake roar, poor mileage, dust marks past the filter, and in severe cases accelerated engine wear due to unfiltered air.

Q6 (Returns-prevention): What photo should I send to prevent a wrong order?
Send a clear photo of your current airbox from top + side, showing mounting tabs and duct layout, plus the VIN last 6 digits. This prevents mismatch across platforms and revisions.