Royal Enfield Flange / Inlet Manifold for Bullet 500 EFI, Classic 500 EFI & Himalayan 410 EFI – 571091/A

Royal Enfield Flange / Inlet Manifold for Bullet 500 EFI, Classic 500 EFI & Himalayan 410 EFI – 571091/A

571091/A is a genuine Royal Enfield flange / inlet manifold used in the EFI intake side of select Royal Enfield motorcycles. Your product photos clearly show the factory pack label as FLANGE, which is important because this part should not be confused with 572304/A, the adaptor with PAV connection. Trusted fiche-style and dealer references also identify 571091 as FLANGE or INLET MANIFOLD, 500cc.

This part is commonly searched as Royal Enfield inlet manifold, EFI flange, intake flange, throttle body flange, and manifold rubber / flange. Current fiche-style source coverage supports use on Bullet 500 EFI, Classic 500 EFI, and also Himalayan 410 Euro 4 EFI. That makes this a hard-to-find but important intake-side flange part for EFI bikes where the original piece is cracked, hardened, leaking, or damaged.

Before you buy: match the old part’s shape, inner bore, mounting pattern, and confirm whether your bike uses the plain flange type or the separate PAV adaptor type. If your old part has the PAV adaptor arrangement, check 572304/A separately.

Key Features

• Genuine Royal Enfield OEM intake flange / inlet manifold
• Part number: 571091/A
• Factory pack label in your photos reads FLANGE
• Dealer reference wording also includes Inlet Manifold, 500cc
• Used in EFI intake/manifold connection area
• Confirmed source support for Bullet 500 EFI, Classic 500 EFI, and Himalayan 410 EFI
• Distinct from 572304/A, which is the adaptor with PAV connection
• Useful for cracked, leaking, hardened, or damaged intake flange replacement

Compatibility Table

Variants

No variants.

Before You Buy Checklist

• Confirm the bike is Bullet 500 EFI, Classic 500 EFI, or Himalayan 410 EFI
• Match the old part shape, bore, and mounting holes
• Check whether the old part is plain flange or PAV adaptor type
• Do not order based on generic “EFI adaptor” wording alone
• If unsure, compare with your old part photo before dispatch

FAQs

1) What is 571091/A?
It is the genuine Royal Enfield flange / inlet manifold piece used in the EFI intake path.

2) Is 571091/A the same as 572304/A?
No. 571091/A is the flange / inlet manifold part, while 572304/A is the adaptor with PAV connection.

3) Which bikes are safely confirmed?
The strongest current source support is for Bullet 500 EFI, Classic 500 EFI, and Himalayan 410 EFI.

4) Why is this part hard to identify online?
Because some sources loosely mix flange, adaptor, and manifold wording. Your pack photo makes the factory identity clear: this one is FLANGE.

5) OEM or aftermarket?
This is a genuine Royal Enfield OEM part.

6) What problem does this solve?
It replaces a cracked, leaking, or hardened intake flange/manifold connection in the EFI intake path.

7) What should I check before ordering?
Check the model, confirm EFI setup, compare shape and mounting pattern, and verify whether your old part is the flange type or the PAV adaptor type.

Also Searched As

Royal Enfield inlet manifold, EFI flange, intake flange, throttle body flange, Bullet 500 EFI manifold, Classic 500 EFI flange, Himalayan 410 intake flange.