Looking for a genuine NGK CR9EIX spark plug for your bike? The NGK 3521 CR9EIX Iridium IX Spark Plug is designed for engines that require this exact specification and supports reliable ignition, smooth starting and consistent everyday performance. Check the latest NGK CR9EIX price in Pakistan, review bike compatibility and product details, and buy the CR9EIX Iridium Spark Plug online from MS Auto Base with confidence.
16.93$
The NGK CR9EIX is an Iridium IX spark plug with NGK stock number 3521. It uses a fine iridium centre electrode designed to provide a stable spark while resisting electrode wear.
The CR9EIX spark plug should be used only when its dimensions, heat range and other specifications match the requirements of your bike engine. Correct fitment is more important than choosing a spark plug only because it is iridium.
CR9EIX is the NGK product reference for this specific Iridium IX spark plug.
It uses a fine 0.6 mm iridium centre electrode. NGK states that the narrow electrode helps support reliable ignition while iridium provides strong resistance to spark erosion.
Yes. NGK 3521 CR9EIX refers to the same spark plug.
CR9EIX is the plug type or service reference, while 3521 is the NGK stock number. You may therefore see the product listed as CR9EIX 3521 NGK, NGK CR9EIX 3521 or simply NGK 3521.
The NGK CR9EIX Iridium Spark Plug combines a fine iridium centre electrode with a tapered ground electrode and resistor construction.
Its main features include:
These specifications make the NGK Iridium IX CR9EIX Spark Plug suitable for engines specifically designed to use this plug or a confirmed equivalent.
Iridium has strong resistance to heat and spark erosion. This allows NGK to use a fine centre electrode while maintaining durability.
The 0.6 mm electrode also leaves more space around the spark area, which NGK says supports reliable ignition and flame development.
NGK also offers other iridium spark plug designs, including the NGK ILZKAR8H8S 95112 Laser Iridium Spark Plug, which is intended for different engine applications.
The spark plug receives high voltage from the ignition system and creates the spark needed to ignite the air and fuel mixture inside the engine.
A correctly matched CR9EIX Iridium IX Spark Plug can support consistent ignition, smooth running and predictable engine response when the rest of the ignition and fuel systems are working correctly.
Iridium is highly resistant to electrode wear. This helps the firing tip maintain its shape during repeated ignition cycles.
Actual spark plug life depends on the bike, engine condition, riding environment and recommended maintenance schedule. It should not be treated as having one fixed replacement mileage for every motorcycle.
MS Auto Base currently lists the NGK CR9EIX 3521 for Honda CB150F, Suzuki GS150 and Suzuki GS150SE applications.
The same CR9EIX 3521 reference is also used across many motorcycle applications internationally, so fitment should always be confirmed for the exact bike and engine rather than from the plug name alone. NGK’s own part finder lists CR9EIX 3521 as an advanced option for multiple motorcycle engines.
The current MS Auto Base listing includes:
Before ordering, confirm that your particular bike model and engine require CR9EIX.
Check the spark plug already installed in your bike, your owner’s manual or a reliable parts catalogue.
If you are unsure, provide your bike model, year and current spark plug reference to MS Auto Base before purchasing. Do not choose the plug only because another version of the same motorcycle uses CR9EIX.
You can also explore other spark plugs available at MS Auto Base, but always confirm the required part number and engine specifications before choosing a replacement.
The CR9EIX 3521 spark plug uses a 10 mm thread diameter, 19 mm reach, 16 mm hex and NGK heat range 9. Current CR9EIX specification references list a 0.8 mm gap and 5 kΩ resistance.
| Specification | Details |
| Brand | NGK |
| Model | CR9EIX |
| Stock Number | 3521 |
| Product Type | Iridium IX Spark Plug |
| Centre Electrode | Iridium |
| Centre Electrode Size | 0.6 mm |
| Ground Electrode | Nickel |
| Thread Diameter | 10 mm |
| Thread Pitch | 1.0 mm |
| Thread Reach | 19 mm |
| Hex Size | 16 mm |
| Heat Range | 9 |
| Preset Gap | 0.8 mm |
| Resistance | 5 kΩ |
| Resistor | Yes |
| Seat Type | Gasket |
The NGK 3521 spark plug has a fine iridium centre electrode, 10 mm thread and heat range 9.
These details matter because spark plugs with different dimensions or heat ranges are not automatically interchangeable, even when they look similar.
The CR9EIX 3521 is commonly specified with a 0.8 mm preset gap.
Avoid changing the gap unless reliable service information for your exact motorcycle specifies a different setting. The fine iridium electrode should also be handled carefully during inspection or installation.
The CR9EIX Iridium Spark Plug creates the spark needed to start combustion inside the engine cylinder.
Its fine iridium firing tip is designed to support dependable ignition while resisting electrode wear.
The ignition system sends high voltage to the spark plug. A spark then jumps across the electrode gap and ignites the compressed air and fuel mixture.
NGK describes the narrow CR9EIX electrode as helping more ignitable mixture reach the spark area, supporting reliable ignition.
Healthy spark plugs contribute to reliable starting and stable engine operation.
However, poor starting, rough running or weak response can also result from ignition coils, fuel delivery, air intake or other engine problems. Replacing the plug should not be treated as a guaranteed solution to every performance issue.
A spark plug must have the correct thread dimensions, reach, heat range and other specifications for the engine.
Using the correct CR9EIX specification protects proper fitment and ignition operation. Always confirm compatibility before installation.
Spark plug replacement intervals vary between motorcycles. Follow the maintenance schedule for your specific bike rather than relying on a universal mileage figure.
Regular inspection can also help identify a plug that is worn, contaminated or operating abnormally.
Possible symptoms include:
These symptoms are not unique to spark plugs, so proper diagnosis is important before replacing parts.
Electrode wear, carbon deposits or contamination can interfere with normal spark plug operation.
If your bike develops these symptoms, inspect the plug and other ignition components before deciding what needs replacement.
Iridium offers strong wear resistance, but no spark plug lasts forever.
Use the maintenance interval specified by the motorcycle manufacturer and inspect the spark plug condition whenever ignition problems are suspected.
When buying a genuine NGK CR9EIX spark plug, check that the product information matches the correct CR9EIX and 3521 references.
You should also review the packaging, NGK branding and physical specifications before installation.
The product should clearly identify:
Plug reference: CR9EIX
NGK stock number: 3521
If either number is different, confirm the product before fitting it to your bike.
When checking an original NGK CR9EIX spark plug, look for clear branding, consistent printing and product specifications that match the CR9EIX 3521 reference.
If the packaging, markings or dimensions appear inconsistent, verify the product before installation.
The NGK CR9EIX price in Pakistan can change with stock availability, import costs, exchange rates and supplier pricing.
For the latest price, check the current amount displayed on the MS Auto Base product page instead of relying on an old search result. The page currently identifies the item as the NGK CR9EIX 3521 Iridium IX Spark Plug.
The NGK 3521 price in Pakistan may differ between sellers depending on import timing, stock source and quantity.
When comparing the NGK CR9EIX spark plug price in Pakistan, make sure each listing is for the same CR9EIX 3521 product and the same quantity.
Spark plug prices can change over time.
Check the live product page before ordering and confirm whether the listed price is for one plug or a pack. This page currently represents a single CR9EIX spark plug.
If you are comparing NGK iridium spark plugs, you can also review the NGK SILKR6D10G 93550 Laser Iridium Spark Plug. Compare product specifications and confirm engine fitment before purchasing, as different NGK models are not automatically interchangeable.
MS Auto Base provides a dedicated listing for the CR9EIX 3521 Iridium IX Spark Plug with product specifications, listed bike compatibility, current pricing and online ordering.
The product listing clearly identifies both CR9EIX and NGK stock number 3521, making it easier to compare the product with your existing spark plug or service information.
If you are unsure whether CR9EIX fits your motorcycle, confirm your bike details before ordering.
Having your model, year and existing spark plug number available makes product matching easier.
You can review the current product details, price and availability through MS Auto Base before completing your order.
Confirm fitment and quantity before checkout.
If you want to buy NGK CR9EIX spark plug online in Pakistan, first confirm that CR9EIX or NGK stock number 3521 is suitable for your motorcycle.
Buyers looking to buy CR9EIX Iridium Spark Plug in Pakistan can review the specifications and current price on MS Auto Base before placing an order.
Check your existing spark plug number and bike details before checkout.
Correct compatibility is more important than selecting a spark plug based only on brand, appearance or iridium construction.
Once fitment is confirmed, select the required quantity and review the current price before ordering the NGK 3521 CR9EIX Iridium IX Spark Plug.
NGK CR9EIX is an Iridium IX spark plug with stock number 3521. It uses a fine 0.6 mm iridium centre electrode and is designed for engines that require the CR9EIX specification.
Yes. CR9EIX is the spark plug reference and 3521 is the NGK stock number for the same product.
Yes. CR9EIX belongs to NGK’s Iridium IX range and uses a fine iridium centre electrode.
The price can change due to stock and import conditions. Check the current MS Auto Base listing for the latest price before ordering.
MS Auto Base currently lists Honda CB150F, Suzuki GS150 and Suzuki GS150SE as compatible applications. Always verify the exact bike and engine before installation.
MS Auto Base currently lists Suzuki GS150 as a compatible bike for CR9EIX 3521. Confirm your bike specification before purchasing.
MS Auto Base currently lists Honda CB150F as a compatible application. Check your existing spark plug or bike specification before ordering.
Check your existing spark plug reference, owner’s manual or a reliable application catalogue. If you are unsure, confirm your bike model and engine details before purchasing.
Check the NGK branding, CR9EIX reference, 3521 stock number, packaging quality and technical specifications. Verify anything that appears inconsistent before installation.
You can order NGK CR9EIX 3521 through MS Auto Base. Check the current price, confirm bike compatibility and select the required quantity before completing your order.
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