Royal Enfield 576321/C – Inlet Cover, Airbox / Airbox Lid – Genuine OEM for Interceptor 650 & Continental GT 650

Royal Enfield 576321/C – INLET COVER, AIRBOX is the genuine airbox lid / inlet cover used on the 650 Twins platform – Interceptor 650 and Continental GT 650. European Royal Enfield microfiche sites list 576321/C as “INLET COVER, AIRBOX / COUVERCLE FILTRE” and map it specifically to the ADMISSION (intake) section of the Interceptor 650 Twin Euro 4 and Continental GT 650 Euro 4.

This cover forms the outer face of the OE airbox, sealing the intake and clamping the air filter element in place. Aftermarket intake kits (like DNA’s Stage 2 combo) also reference 576321/C as the OEM airbox cover used on Interceptor 650 from 2018–2023+, confirming it as the stock part on production bikes.

If your bike’s airbox lid is cracked, warped, stripped at the screw holes or missing after mods, refitting the original 576321/C restores proper airbox sealing, intake noise control and filter retention. Being an OEM plastic component, it matches the factory airbox perfectly – no drilling, trimming or jugaad required – and works with the original filter (e.g., 576029/C) and fasteners.

Use this part for crash repairs, returning from open-airbox experiments to stock, or when upgrading to performance filters that re-use the OE airbox cover.

Key Features

• Genuine Royal Enfield OEM part – 576321/C “INLET COVER, AIRBOX”

• Forms the airbox lid / inlet cover on 650 Twins – holds and seals the air filter element.

• Precisely matches OE airbox shape and screw locations – direct bolt-on, no modification.

• Correct fit with OEM and premium filters (DNA, etc.) that are designed around the stock airbox cover.

• Helps maintain proper intake sealing, filtration and noise levels as designed by Royal Enfield.

• Ideal replacement for cracked, warped, or over-tightened original covers.

• Manufactured in OE-grade plastic with factory finish to match the 650 Twins airbox assembly.

• Supplied as a single airbox inlet cover – genuine part, not a locally moulded copy.

Compatibility Table

(Only fitment backed by fiche / multi-source confirmation is marked ✅)

*Years based on production range for the 650 Twins and aftermarket documentation that references 576321/C as the OEM airbox cover; later BS6/EU5 bikes may also use superseding suffix 576321/D on some markets, so always cross-check your VIN and parts book.

Not listed for: Himalayan, Classic, Bullet, Meteor, Super Meteor, Hunter, Shotgun, Guerrilla or 450 platforms – do not use for these unless your official fiche shows 576321/C for your VIN.

Variants

• Single Variant:

  • Part No.: 576321/C – Inlet Cover, Airbox

  • Finish: OE black plastic airbox cover

  • Quantity: 1 piece (airbox cover only – filter and screws not included)

If you encounter suffix 576321/D, treat it as a separate SKU with its own listing/variant once confirmed.

FAQs

Q1. Will this fit my Interceptor 650 BS6?
Yes, as long as your parts catalog or existing cover lists 576321/C (or your DNA / performance filter kit states this as your OEM lid). Many 2018–on Interceptor 650s use this exact part number; some markets may show a D-suffix supersession, so always confirm in the fiche.

Q2. Does 576321/C include the air filter element?
No. This listing is for the airbox inlet cover / lid only. The air filter (e.g., 576029/C or replacement performance filter) is sold separately.

Q3. Can I use this when installing a DNA / performance filter?
Yes. Several DNA kits explicitly mention 576321/C as the OEM airbox cover their products interface with, meaning this part is fully compatible with those kits if your bike originally came with it.

Q4. How do I confirm this is the right lid for my bike?
Check your Royal Enfield microfiche / RE Kart / dealer DMS under the Air Intake / Airbox section. If it shows 576321/C – INLET COVER, AIRBOX for your VIN, this is correct. If it lists 576321/D or another number, use that exact code instead.

Q5. What problems can a damaged airbox cover cause?
Cracked or warped covers can lead to poor sealing, dust ingress, noisy intake, and reduced filter clamping, all of which can shorten engine life. Replacing it with the correct OEM cover restores proper airbox performance.