Royal Enfield Washer 4.5x12x1 (Side Panel Hardware) for Interceptor 650 / Continental GT 650 – 148477/B

This is a genuine Royal Enfield plain washer with specification 4.5 × 12 × 1 mm, supplied under Part No. 148477/B. It’s a small but critical fastener component used in the side bodywork / side panel assembly on the Royal Enfield 650 Twins platform (confirmed in parts catalog pages).

Why it matters: worn, missing, or incorrect-thickness washers can cause panel loosening, vibration marks, rattles, and misalignment, especially on long rides. Using the correct OEM washer helps maintain factory fitment and prevents fastener damage.

Also searched as: “RE washer 148477”, “148477/B washer”, “side panel washer Interceptor 650”, “4.5x12x1 washer Royal Enfield”, and seller codes like PS148477.

Before you buy: confirm your requirement by part number and, ideally, match washer dimensions or your side panel hardware diagram/photo to avoid ordering the wrong size.

Key Features

• Genuine Royal Enfield spare: Washer 4.5×12×1 (Part 148477/B)

• Used in side bodywork / side panel hardware stack-up (650 Twins catalog pages)

• Helps prevent rattles, uneven panel fitment, and paint scuffing from loose fasteners

• Correct thickness (1 mm) supports proper clamp load (avoids over-tightening damage)

• Ideal for replacement during panel removal / detailing / repair jobs

• Best practice: replace if bent, rusted, or lost during service

• Works with matching OEM clips/screws as per diagram (order separately if needed)

Compatibility Table 

Explicit exclusion (return-prevention): This is a dimension-specific washer. Do not buy based only on “it fits many bikes.” Order only if you need 148477/B or 4.5×12×1 mm.

Variants

No variants.

FAQs 

Q1 (Fitment): How do I confirm this washer fits my bike?
Check your Royal Enfield parts diagram for the assembly you’re working on (commonly side panels on 650 Twins) and confirm the washer is 148477/B. If you’re unsure, match the OD/ID/thickness: 12 mm OD, 4.5 mm ID, 1 mm thick.

Q2 (Fitment): Will this work on BS6 / newer Interceptor 650 & GT 650?
It appears in some seller Euro 5 catalogs, but we are keeping BS6/Euro5 as ❓ Unverified for this listing unless you confirm 148477/B on your VIN/parts sheet.

Q3 (Comparison): OEM washer vs local hardware-store washer—what’s the difference?
Dimension and thickness tolerance matters. A “close enough” washer can change clamp load and cause loosening or panel misfit. OEM ensures the exact spec used in the assembly.

Q4 (Installation): Any precautions while fitting it?
Use correct screw/clip as per diagram, avoid over-torque on body panels, and ensure the washer seats flat (replace if bent). A light thread-cleaning and proper tightening sequence reduces rattles.

Q5 (Symptoms): What problems does replacing this washer solve?
Common fixes include side panel vibration/rattle, panel shifting after removal, uneven gaps, and fasteners biting into plastic/paint.

Q6 (Returns-prevention): What should I share to confirm before ordering?
Send a photo of (1) your removed washer next to a scale, or (2) the exact diagram callout / part number from your parts list. If your requirement is not 148477/B or not 4.5×12×1, do not order this.