NGK Standard Spark Plug Box of 4 (CR8EB)

NGK Standard Spark Plug — CR8EB, Heat Range 8

Part Number: CR8EB

The NGK Standard Spark Plug (CR8EB) sits one heat range hotter than the CR9EB — and that matters. For engines that run cooler, see lots of stop-and-go use, or spend time at lower RPMs, this heat range 8 plug keeps the electrode clean and firing properly. This is the plug those engines came with from the factory, and for good reason.

NGK Standard Spark Plug Build Quality

Same OEM-grade construction runs across the entire NGK Standard Spark Plug series. This CR8EB uses a 98% pure copper core, alumina silicate ceramic insulator, triple gasket sealing, and trivalent plating on the shell. Nothing exotic — just a plug built to last and installed without hassle.

Key Benefit of This NGK Standard Spark Plug

The copper core in this NGK Standard Spark Plug pulls heat away from the electrode fast. That keeps operating temps stable across a wide range of riding conditions — warm weather, cold starts, highway runs, low-speed urban riding. The alumina silicate ceramic insulator adds structural strength and transfers heat efficiently, while corrugated ribs along the insulator body stop flashover before it can cause a misfire.

Trivalent metal plating on the shell does double duty — it stops corrosion from setting in and keeps the plug from seizing in the head. Removal stays easy even after long service intervals. Cold-rolled threads protect against cross-threading on install, which matters a lot on aluminum heads.

NGK Standard Spark Plug Full Specifications

NGK Standard Spark Plug Compatibility

This NGK Standard Spark Plug covers a wide range of powersports machines across multiple brands. It directly replaces plugs from Suzuki (09482-00570), Denso (U24ESR-NB), Arctic Cat (0217-813), Aprilia (8570084), Kawasaki (92070-0001), BMW (12 12 7 653 439), and Piaggio (638853).

Fits: Aprilia Atlantic 125 and 200 (2003–2006), RXV 450/550 (2006–2008), SXV 450/550 (2006–2008), Scarabeo 125 GT (2004–2006), Scarabeo 200 (2003–2004, 2009, 2011), Scarabeo 250 GT (2004–2006); Arctic Cat Bearcat 3000 LT (2016–2017), Norseman 3000 (2018–2019), Pantera 3000 (2016–2019); Kawasaki KX250F (2005–2006); Suzuki LT-R450 QuadRacer, RMZ250; Husqvarna SMR 510, TC250, TC450, TC510, TE250, TE450, TE510; Vespa GT 200 Granturismo, LX 50.

Always verify against your owner's manual before ordering this NGK Standard Spark Plug — fitment is based on stock, unmodified configurations.

Installing Your NGK Standard Spark Plug

Straightforward job. Use a 5/8" spark plug socket and torque wrench.

• Cast iron head: 7.2–10.8 lb-ft
• Aluminum head: 7.2–8.7 lb-ft

Skip the anti-seize — the trivalent plating on this NGK Standard Spark Plug handles corrosion and seizing protection on its own. Adding it anyway affects torque accuracy on the wrench. The plug comes pre-gapped at 0.032", but check it against your specific engine's service spec before installing.

Who Should Use This NGK Standard Spark Plug

This NGK Standard Spark Plug (CR8EB) is the straight replacement if your machine originally came with it. Heat range 8 runs one step hotter than the CR9EB — better suited for engines that see more low-load riding, cooler operating conditions, or frequent short trips. If your service manual calls for a heat range 8 plug, this is the one.

Worth stating clearly — this is a nickel electrode plug. Correct for OE nickel applications. Not the right choice if your engine came factory-equipped with iridium or platinum plugs.

NGK Standard Spark Plug FAQ

What's the difference between this NGK Standard Spark Plug (CR8EB) and the CR9EB? One heat range. The CR8EB runs hotter (heat range 8), which helps prevent fouling on engines that run cooler or see a lot of low-RPM use. The CR9EB (heat range 9) suits engines that run hotter or at sustained high RPM. Always run what your service manual specifies.

Does this NGK Standard Spark Plug come pre-gapped? Yes, pre-gapped at 0.032" (0.8mm). Still worth a quick check with feeler gauges before installing — some applications call for a slightly different setting.

Do I need anti-seize on the NGK Standard Spark Plug threads? No. The trivalent plating does that job already. Applying anti-seize on top throws off your torque reading and can lead to over- or under-torquing.

What torque spec should I use for this NGK Standard Spark Plug? 7.2–10.8 lb-ft for cast iron heads, 7.2–8.7 lb-ft for aluminum. Always use a torque wrench — aluminum threads strip easily if you go too tight.

How often should I replace this NGK Standard Spark Plug? Under normal conditions, plan on 10,000–15,000 miles. If you're doing a lot of short trips, cold starts, or running ethanol fuel, inspect sooner.

Is this the exact same NGK Standard Spark Plug sold at the dealer? Same part, same factory, same stock number. The only thing different is the price.

Can I run this NGK Standard Spark Plug on my BMW motorcycle? Yes, for specific models. It crosses to BMW OEM part number 12 12 7 653 439. Confirm against your model's service manual before ordering.