NGK CPR8EAIX-9 Iridium IX Spark Plug – Pulsar Triple-Spark Side Plug, Xpulse 200, Unicorn, Hornet, FZ & Compatible Bikes

NGK CPR8EAIX-9 is an Iridium IX motorcycle spark plug with a fine-wire iridium centre electrode, NGK heat range 8 and a nominal 0.9 mm spark gap. It is the Iridium IX upgrade in the CPR8EA-9 plug family and is used across a wide range of motorcycles.

Very important for Bajaj Pulsar buyers: on Pulsar NS200 / RS200 / AS200 triple-spark engines, CPR8EAIX-9 is the SIDE spark plug – not the centre spark plug. These engines use two CPR8EAIX-9 plugs, one on the left side and one on the right side. The centre plug is a different size/type: LKAR8A-9 in the conventional setup, or LKAR8AI-9 when upgrading the centre position to Iridium.

Why the “Side Plug” Detail Matters

Several Bajaj engines use more than one spark plug, and the plugs are not necessarily the same size or type in every position. A customer searching only “NS200 spark plug” can easily order the wrong plug if the listing does not identify the position.

NGK's application data for the Pulsar 200 NS identifies the standard triple-spark arrangement as 2 × CPR8EA-9 + 1 × LKAR8A-9. CPR8EAIX-9 is NGK's advanced Iridium IX alternative for the CPR8EA-9 positions. Therefore, on NS200 triple-spark applications this product is for the two side positions.

Bajaj Fitment – Position & Quantity

High-Confidence Non-Bajaj Applications

The Safest Compatibility Rule

If your motorcycle specifies NGK CPR8EA-9 in that exact spark-plug position, CPR8EAIX-9 is the corresponding NGK Iridium IX upgrade candidate for that position.

Do not choose a spark plug only because:

• the thread appears to fit;
• the engine capacity is similar;
• another online seller lists the motorcycle;
• your bike has multiple spark plugs and one of them uses CPR8EA-9.

On multi-plug engines, always identify which plug position you are replacing.

CPR8EA-9 vs CPR8EAIX-9

What Iridium IX Actually Changes

NGK's Iridium IX design uses a very fine iridium centre electrode. Iridium resists spark erosion extremely well, allowing NGK to use a narrow centre electrode while maintaining durability.

The practical benefit is a concentrated spark and reliable ignition with an electrode that wears more slowly than a conventional nickel design. This can help maintain ignition consistency over a longer service period.

Do not expect unrealistic horsepower or mileage gains from a spark plug alone. A healthy engine with a correct standard plug may show only a subtle change. The strongest reasons to buy Iridium IX are ignition consistency, fine-wire electrode design and electrode durability.

Specifications

How Many Should You Order?

This listing contains ONE CPR8EAIX-9 spark plug. If your motorcycle requires two side plugs, order quantity 2 unless you are purchasing a separate complete plug kit.

Installation Guidance

1. Confirm the plug code and position before removing the old plug.
2. For triple-spark Pulsar applications, physically identify whether you are servicing a side plug or centre plug.
3. Allow the engine to cool before removing the plug.
4. Clean dirt from around the plug area before removal.
5. Compare the removed plug with the replacement before installation.
6. Thread the new plug in by hand first to prevent cross-threading.
7. Tighten according to the motorcycle manufacturer's torque specification.
8. Refit the correct plug cap/coil securely.

Gap Warning for Fine-Wire Iridium

CPR8EAIX-9 is supplied with a nominal 0.9 mm gap. Avoid aggressively re-gapping a fine-wire Iridium plug with conventional tools because incorrect force can damage the centre electrode.

If the motorcycle specification requires a different gap, use the correct service method and never lever directly against the fine iridium tip.

Heat Range Warning

CPR8EAIX-9 is NGK heat range 8. Spark-plug heat range matters. Do not substitute this plug for another heat range simply because the thread dimensions appear similar.

Common Wrong Orders – Please Check Before Buying

• NS200/RS200/AS200 centre plug: CPR8EAIX-9 is NOT the centre plug.
• Triple-spark full service: buying only one CPR8EAIX-9 does not replace all three plugs.
• 650 Twins: Interceptor 650 / Continental GT 650 use a different spark-plug specification; do not buy this based on engine capacity.
• Different Honda/Yamaha model years: verify the owner's manual or the plug removed from the bike.

Frequently Asked Questions

1. Is CPR8EAIX-9 the side plug or centre plug on Pulsar NS200?
It is the side plug. NS200 triple-spark uses two CPR8EA-family side plugs, one left and one right. The centre plug belongs to the LKAR8A-9 family.

2. How many CPR8EAIX-9 plugs are required for NS200?
For the two side positions, 2 pieces are required. A full three-plug Iridium setup additionally requires the correct centre plug, normally LKAR8AI-9 where that Iridium upgrade is appropriate.

3. Is it the side plug on RS200 too?
Yes. On the triple-spark RS200 arrangement, CPR8EA-family plugs are used in the left and right side positions while the centre uses the different LKAR8A-9 family.

4. Is it the side plug on AS200?
Yes. The AS200 triple-spark arrangement also separates the two CPR8EA-family side plugs from the LKAR8A-9-family centre plug.

5. Does one box contain two plugs?
No. This listing is for one CPR8EAIX-9 spark plug.

6. What should I order for a complete NS200/RS200/AS200 Iridium set?
For compatible triple-spark configurations: 2 × CPR8EAIX-9 for the side positions + 1 × LKAR8AI-9 for the centre position.

7. Is CPR8EAIX-9 the Iridium version of CPR8EA-9?
Yes. CPR8EAIX-9 is NGK's Iridium IX upgrade in the same dimensional/heat-range family.

8. Does it fit Hero Xpulse 200?
Yes on versions specifying CPR8EA-9. Confirm the original plug code on the motorcycle if the model/year is uncertain.

9. Does it fit Honda Unicorn 160?
Yes where CPR8EA-9 is specified.

10. Does it fit Honda Hornet 160R?
Yes where CPR8EA-9 is specified.

11. Does it fit Yamaha FZ / FZS?
It fits compatible FZ/FZS applications that specify CPR8EA-9. Because Yamaha used different plug specifications across models/years, verify before ordering.

12. Is it pre-gapped?
Its nominal factory gap is approximately 0.9 mm. Always follow the motorcycle's exact specification.

13. Will it increase horsepower?
No fixed horsepower gain is promised. The Iridium IX advantage is primarily fine-wire ignition performance and electrode durability.

14. Can I use it as the centre plug because all three plugs fire in the same engine?
No. On NS200/RS200/AS200 triple-spark systems, the centre plug is physically/specification-wise different. Use the correct LKAR8A-9/LKAR8AI-9-family centre plug.

15. Does it fit Dominar 400?
On compatible triple-spark Dominar 400 applications, CPR8EAIX-9 is used for the side positions; the centre plug is different. Verify exact model/year before ordering.

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