NGK CR7EKB spark plug for Piaggio Beverly 400-500, MP3 400, X9 500, Aprilia Scarabeo, Dorsoduro, Shiver, Yamaha T-Max 500

The NGK CR7EKB is the NGK ignition spark plug for Piaggio, Aprilia, Gilera and Yamaha maxi scooters and mid-size motorcycles: Piaggio Beverly 400 and 500, MP3 400, X9 500, Aprilia Scarabeo 400 and 500, Dorsoduro 750, Shiver 750, Mana 850, Gilera Nexus 500, Fuoco 500 and Yamaha T-Max 500, plus several Peugeot and Malaguti models.

It is a resistor plug with heat range 7, a double ground electrode and a 10 mm thread with a 19 mm reach: it delivers a stable spark, reduces radio and electronic interference and helps cold starts and a steady idle.

Technical features

• NGK brand, code CR7EKB
• Resistor plug (about 5 kΩ) to reduce interference with on-board electronics
• Heat range 7
• 10 mm thread, 19 mm reach, 16 mm hex
• Double ground electrode
• Electrode gap 0.7-0.8 mm depending on the model: check your manual
• Equivalent to Piaggio reference 829981

Which motorcycles and scooters it fits

• Piaggio: Beverly 400 (2006-2016), Beverly 500 (2002-2012), MP3 400 (2007-2021), X9 500, X8, X Evo, X10, Vespa Granturismo 200
• Aprilia: Scarabeo 400 and 500, Atlantic 500 and Sprint, Dorsoduro 750, Shiver 750, Mana 850, SRV 850
• Gilera: Nexus 500, Fuoco 500, GP 800, Runner VXR 200
• Yamaha: T-Max 500 (2004-2011)
• Peugeot: Geopolis 300-400-500, Satelis 400-500, Ludix 50
• Malaguti Spidermax 500 and SYM GT 500

Check your model and year in the applications table at the bottom of the page: the list comes from retailer catalogues.

When to replace the spark plug

Replace the spark plug at the intervals given in your owner's manual, or sooner if you notice hard starting, rough idle, misfires, rising fuel consumption or loss of power. A worn, fouled or deposit-covered electrode needs more energy to produce a spark.

Before you buy

Compare the code printed on the fitted plug with CR7EKB and check your model and year in the table. If your vehicle uses two plugs per cylinder, always replace both together. Also check the plug cap and tighten the plug to the manufacturer's torque.

Frequently asked questions

What spark plug is the NGK CR7EKB?

It is an NGK resistor plug with heat range 7, 10 mm thread and 19 mm reach.

Which scooters does it fit?

Piaggio Beverly 400-500, MP3 400, X9 500, Aprilia Scarabeo, Dorsoduro, Shiver, Mana, Gilera Nexus and Fuoco, Yamaha T-Max 500 and more: see the table.

How many plugs do I need?

It depends on the vehicle: check the manual. If two are needed, replace them together.

How often should it be replaced?

Follow the intervals in your vehicle's manual.

Is it a resistor plug?

Yes, the R in the code indicates the built-in suppression resistor.