Choosing the Right Spark Plug for Your 1998-2002 Husaberg FE350
Keep your Husaberg's high-performance engine firing on all cylinders with the correct new aftermarket spark plug.
- The recommended aftermarket spark plug is the NGK CR8E (standard) or NGK CR8EIX (Iridium for longer life).
- Always verify the spark plug gap is set to 0.8mm (0.032") before installation, even on new plugs.
- Symptoms of a bad plug include hard starting, rough idle, misfiring, and loss of power.
- Replacement is a simple DIY task that requires basic tools and should be done regularly for best performance.
Signs of a Failing Spark Plug
A worn or fouled spark plug can cause several noticeable issues with your bike's performance. Because it's an inexpensive and easy part to replace, it's often one of the first things to check when you experience engine trouble.
- Hard Starting: A weak spark makes it difficult for the engine to fire up, especially when cold.
- Rough Idle and Stalling: If your bike won't hold a steady idle or dies when you pull in the clutch, a bad plug could be the culprit.
- Engine Misfires: You might feel the engine hesitate or stumble during acceleration. This is often due to an inconsistent spark.
- Reduced Power: A worn plug can't efficiently burn the fuel mixture, leading to a noticeable loss of power and sluggish throttle response.
- Fouled Appearance: A visual inspection can tell you a lot. A plug that comes out black and wet is 'fouled,' often from a rich fuel mixture, while a white or grayish look can indicate the engine is running too hot. A healthy plug should have a light tan or brownish color.
Choosing the Right Aftermarket Spark Plug
For the 1998-2002 Husaberg FE350, the most commonly recommended spark plug is the NGK CR8E or its equivalent. While Husaberg originally may have used a non-resistor plug (C8E), the resistor version (CR8E) is a safe and common replacement that helps prevent radio frequency interference.
Brand and Material Tiers
When shopping for a new plug, you'll see different types at different price points. The main difference is the material used for the center electrode.
- Standard (Nickel/Copper): Brands like NGK (standard CR8E) and Champion offer dependable nickel-alloy plugs. These are the most affordable and work perfectly well, but they have the shortest service life and should be inspected or replaced regularly.
- Iridium: The best performance and longevity comes from Iridium plugs, such as the NGK CR8EIX. The iridium electrode is extremely hard and has a very high melting point, meaning it resists wear for much longer. It also allows for a very fine-tipped electrode, which creates a more focused and consistent spark, improving throttle response and cold starting.
Pro Tip: Always Check the Gap
Even if a spark plug is advertised as 'pre-gapped,' you should always verify the gap with a feeler gauge before installation. The correct gap for the NGK CR8E is approximately 0.8mm (.032"). An incorrect gap can lead to poor performance and idling issues right from the start.
Known Issues
No recalls or Technical Service Bulletins (TSBs) from the NHTSA exist for the spark plug on the 1998-2002 Husaberg FE350. The most common issues reported by owners are general maintenance problems like spark plug fouling from improper jetting or incorrect gapping out of the box. Some owners have reported that parts suppliers occasionally get confused and send the wrong plug for these specific model years, so it's important to verify you have the correct part before installing.
Frequently Asked Questions
How often should I replace the spark plug on my FE350?
For a high-performance dirt bike, it's good practice to inspect your spark plug every 15-20 hours of riding and replace it at least once a season or every 30-40 hours, especially if you are using a standard nickel plug. Iridium plugs can last significantly longer. The service manual for later models recommends a change at major service intervals.
What is the correct spark plug for my 1998-2002 FE350?
The standard recommendation is the NGK CR8E. A premium, longer-lasting option is the NGK CR8EIX Iridium plug. Cross-references to other brands like Champion exist, but NGK is the most widely used and trusted for this application.
What tools do I need to change the spark plug?
You will need a spark plug socket (16mm or 5/8"), a ratchet with an extension, and a torque wrench. It's also highly recommended to have a spark plug gap tool/feeler gauge and a small amount of anti-seize compound for the threads.
Do I need to use a torque wrench?
Yes, it is highly recommended. Over-tightening a spark plug can damage the threads in your engine's aluminum cylinder head, leading to a very expensive repair. The NGK specification for a 10mm plug in an aluminum head is around 7.2-8.7 lb-ft. Under-tightening can cause the plug to loosen from vibration and lead to poor heat transfer.
Technical Specifications
OEM Part Numbers: NGK C8E NGK CR8E
Thread Size: 10mm, Hex Size: 16mm (5/8"), Reach: 19mm, Gap: 0.8mm (0.032"), Seat: Gasket, Resistor: Yes (for CR8E).
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Husaberg FE350: