Scooter Spark Plug, NGK BR9ES Long

NGK BR9ES Long Spark Plug for 50cc and 80cc Engines

The NGK BR9ES Long spark plug is built for a range of 50cc and 80cc engines, aiming for steady ignition and efficient burning of fuel. Keeping this component in good condition supports how the engine runs overall. It belongs to the scooter spark plugs range and can help your engine work more efficiently. Its specifications and sturdy build make it a practical option for routine upkeep.

Construction and Compatibility

The plug has a 14mm thread and a 19mm (3/4 inch) reach, so it suits several engine designs. Its hex measures 20.6mm (13/16 inch) and the electrode gap is set at 0.7mm (.028 inch). A heat range of 9 is used to suit the combustion temperature. A removable terminal nut makes it easy to fit and remove.

When to Replace Your Spark Plug

Checking the spark plug on a regular schedule and swapping it when needed helps keep the engine performing well. Trouble starting the scooter or a drop in acceleration can point to the plug needing replacement. This model is intended for 139QMB-based engines, covering several codes that match a wide selection of scooter models.

Specifications

• Thread Size: 14mm
• Reach: 19mm (3/4 inch)
• Hex Size: 20.6mm (13/16 inch)
• Gap: 0.7mm (.028 inch)
• Heat Range: 9
• Terminal Nut: Removable
• Packaging: May vary from product photo
• Fits: 139QMB-based 50cc and 80cc engines (engine codes 139QMA, 139QMB, 1P39QMB, 147QMD and similar QMA/QMB engines)

Fitment

Fits:

• 139QMB-based 50cc / 80cc engines (139QMA, 139QMB, 1P39QMA-2, 1P39QMB, YN139QMB, JJ1P39QMB, 139FMA-2, BD1P39QMB, BN139QMB, 147QMD)
• Other QMA engines
• Other QMB engines

How to choose: Choose this plug if your engine uses a 14mm thread, a 3/4 inch (19mm) reach and a 0.7mm (.028 inch) gap, or if the plug currently fitted is an NGK BR9ES long.

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