Hero
Hero Genuine Spark Plug for Karizma | OEM Ignition Plug | 31918HM5630S
Hero Genuine Spark Plug for Karizma | OEM Ignition Plug | 31918HM5630S
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Please order only after confirming the part number, model, variant, year, side, connector type and compatibility. All orders are non-cancellable once placed. Correctly shipped spare parts are not eligible for return, exchange or refund due to wrong selection, wrong diagnosis, fitment mismatch, mechanic recommendation or change of mind. Electrical/electronic items are additionally non-returnable once opened, installed, plugged in, tested or used. Wrong item, damaged item or missing item claims require a complete unboxing video within 24 hours. Read full Return & Warranty Policy
Hero Genuine Spark Plug for Karizma | OEM Ignition Plug | 31918HM5630S
Product Description
If your Hero Karizma is hard to start, misfiring, idling rough, losing pickup, or feeling dull on throttle, the spark plug is one of the first service parts to inspect. 31918HM5630S is a genuine Hero spark plug, and Hero’s official store lists this exact SKU as SPARK PLUG - Karizma.
For customers, this part should be described simply as:
- spark plug
- ignition plug
- engine firing plug
- Karizma spark plug
That is much clearer than listing only the part number. Seller references also keep the same Karizma identity and show older Karizma / Karizma ZMR-era mappings under this part number, which supports a clean Karizma-focused listing.
This spark plug is usually replaced when:
- the bike becomes difficult to start
- engine firing becomes weak or irregular
- mileage drops
- throttle response feels dull
- routine service replacement is due
What This Part Is
Official Hero name: SPARK PLUG - Karizma
Customer-friendly names:
- Spark Plug
- Ignition Plug
- Engine Firing Plug
Key Features
- Genuine Hero part number 31918HM5630S
- Official Hero product identity: SPARK PLUG - Karizma
- Current official MRP shown as ₹262
- Helps restore proper ignition, cleaner combustion, and smoother starting
- Important regular service item for Karizma maintenance
- Better fitment confidence than random local plugs with no clear part-number match
- Strong search match for Karizma spark plug, Hero ignition plug, and Hero engine firing plug
- Single-model listing helps reduce wrong orders and improve conversion clarity
Confirmed Compatibility
Official Hero fitment:
- Hero Karizma
Seller-supported matching / legacy applications:
- Hero Karizma
- Hero Karizma ZMR
Important Fitment Note
Before ordering, please match:
- part number 31918HM5630S
- bike model: Hero Karizma
- old spark plug code if available
- mechanic confirmation during service
Because spark plugs can vary by heat range and application, order by exact part number or confirmed fitment, not by appearance alone.
What You Will Receive
- 1 x Hero Genuine Spark Plug
- Part number: 31918HM5630S
Technical Details
- Brand: Hero MotoCorp / Hero Genuine Parts
- Part Number: 31918HM5630S
- Part Name: Spark Plug
- Official fitment: Karizma
- MRP on official store: ₹262
- Net Quantity: 1 piece
FAQs
Q1. What is 31918HM5630S?
It is a genuine Hero spark plug for Karizma.
Q2. Which bike does it fit?
Hero’s official store lists this exact SKU for Karizma.
Q3. Does it also relate to Karizma ZMR?
Seller references show Karizma ZMR in older application mappings for this same part number, so that legacy fitment exists in market references.
Q4. What problems does a spark plug solve?
A fresh spark plug can help with hard starting, weak firing, rough idling, missed combustion, and dull throttle response.
Q5. Is this a regular service item?
Yes. Spark plugs are standard maintenance parts and are replaced during routine service intervals.
Q6. Is this genuine Hero?
Yes. This SKU is sold on Hero’s official store as a genuine Hero spark plug.
Q7. Is this only for Karizma?
The cleanest official fitment is Karizma, while seller references also show legacy Karizma ZMR mappings. For safest selling, keep the page Karizma-led and mention legacy ZMR mapping carefully.
Q8. How do I confirm before ordering?
Match the exact part number 31918HM5630S or confirm the old plug/application with your mechanic before purchase.
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Verify Fitment on Official Brand Portals
Verify Fitment on Official Brand Portals
For selected genuine spare parts, you can cross-check the part number on the official brand portals before ordering.
Royal Enfield Official Spares Portal
Hero MotoCorp Official eCatalogue
