UNDER THE HOOD
573964/A – Clip, Breather / Small Service Clip for Classic 350 & Classic 500 UCE, Bullet 350/500 UCE, Electra 350 UCE (ES), Thunderbird 350/500 (UCE), Continental GT 535, Himalayan 411 (SAP/PAI hoses) – Genuine Royal Enfield
573964/A – Clip, Breather / Small Service Clip for Classic 350 & Classic 500 UCE, Bullet 350/500 UCE, Electra 350 UCE (ES), Thunderbird 350/500 (UCE), Continental GT 535, Himalayan 411 (SAP/PAI hoses) – Genuine Royal Enfield
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The genuine Royal Enfield 573964/A – CLIP is the small OE hose/line clip used right through the older UCE range to secure breather / pulse air / SAP / small crankcase or airbox hoses. In RE fiches it’s literally named “CLIP” or “CLIP BREATHER PIPE” and sits in the same group as the air-filter box, induction and anti-pollution (PAI) parts. Because it’s OEM, the diameter, spring tension and plastic profile are exactly right for the thin RE breather tubes — it grips firmly without cutting the hose, and it fits the boss/tab where the factory intended.
We found it listed for a wide set of UCE bikes: TBTS/Thunderbird 350-500, Bullet 350/500 UCE (KS/ES), Electra 350 UCE, Classic 350/500 EFI, and even the Classic/Bullet Euro-4 and Himalayan PAI layouts where the same style clip holds the pollution/vent pipe. So this is the one to order when you’ve lost a clip during service, changed a hose, or are restoring a bike to 100% factory routing. Supplied per piece — check your fiche for quantity.
Key Features
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Genuine OE RE clip – Part 573964/A.
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Sized for RE breather / SAP / small vacuum hoses.
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Correct tension so it holds but doesn’t crush the hose.
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Matches OE routing tabs on Classic/Bullet/Thunderbird airbox & PAI assemblies.
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Ideal after hose replacement, detailing, or Euro-4 de-rustoration.
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Supplied per piece
Compatibility Table (confirmed from multiple listings)
| Model / Family | Notes |
|---|---|
| Classic 350 UCE / Classic 500 EFI (incl. Euro-4) | Shown as “Clip breather” 573964/A in Feb-2017 Euro-4 parts book. |
| Bullet 350 UCE (KS/ES) & Bullet 500 UCE | Listed together with TBTS on Indian exporter pages. |
| Electra 350 UCE (ES) | Same breather/induction clip listing. |
| Thunderbird 350 / Thunderbird 500 (TBTS / NTB) | Appears in retired TBTS spares sheet as “Clip Breather Pipe – 573964/A”. |
| Continental GT 535 | French and EU sites show 573964/A in PAI / breather section. |
| Himalayan 411 (anti-pollution section) | EU site maps 573964/A to PAI/SAP hose clip. |
Because this is a generic small clip, RE uses it across several models. If your fiche line says exactly 573964/A, this is the right one.
Variants / Related
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Other small clips in the same area: 592656/A (hose clip 350 cc),
FAQs
Q1. What hose does this actually hold?
On most UCEs: the breather / PAI / induction small hose on or near the airbox or crankcase. On Euro-4/Himalayan: one of the SAP/anti-pollution lines. Match to your diagram.
Q2. Is it sold in pairs?
No, per piece. Your diagram will usually call for 1–3.
Q3. Can I use a hardware-store clamp instead?
You can, but generic clamps can cut the hose or look non-OE. This keeps the bike factory correct.
Q4. Will it fit new J-series (Classic Reborn/Meteor/Hunter)?
Not listed — J-series uses a different hose-clip family. Order only if your J-bike fiche says 573964/A.
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