Genuine BMW NGK LMAR9J-9E Spark Plug F 450 GS / F 750 GS / F 850 GS / F 900 / F 800 GS – 12129829073

The Genuine BMW Motorrad spark plug 12129829073, identified as NGK LMAR9J-9E, is an ignition system component used on various BMW motorcycles within the F 450, F 750, F 800, F 850 and F 900 families.

The spark plug generates the spark required to ignite the air-fuel mixture inside the cylinder. Correct spark plug operation is essential for reliable ignition, consistent combustion and stable engine operation.

With use and mileage, spark plug electrodes can gradually wear and combustion deposits may accumulate. A deteriorated spark plug can be associated with starting difficulties, irregular idle, misfires, reduced performance or irregular engine operation.

Replacement of the BMW Motorrad spark plugs forms part of scheduled engine maintenance and should be carried out according to the service intervals specified for each motorcycle. During replacement, it is also advisable to inspect the ignition coils, connections and other related ignition components.

BMW part number 12129829073 / NGK LMAR9J-9E is intended for compatible applications across different generations of BMW middleweight motorcycles, including Adventure, Trail, Roadster and Sport-Touring models within the F range.

As a Genuine BMW Motorrad spark plug, it is particularly suitable for workshops and owners who want to maintain the ignition system according to the specifications intended for their motorcycle.

The number of spark plugs required for a complete service depends on the engine configuration of each model. We recommend confirming the required quantity before ordering.

Before purchasing, verify BMW part number 12129829073 and specification NGK LMAR9J-9E using the appropriate parts information or confirm compatibility against the motorcycle VIN, particularly because several generations exist within the BMW F families.

Main features:

• Genuine BMW Motorrad spark plug.
• Manufacturer/specification: NGK LMAR9J-9E.
• BMW part number: 12129829073.
• Replacement component for the engine ignition system.
• Generates the spark required for combustion.
• Suitable for scheduled engine maintenance.
• For various compatible BMW F-series motorcycles.
• Replacement for worn or deteriorated spark plugs.
• Applications across BMW Adventure, Trail, Roadster and Sport-Touring motorcycles.

Related models:

• BMW F 450 GS.
• BMW F 750 GS.
• BMW F 850 GS.
• BMW F 850 GS Adventure.
• BMW F 900 R.
• BMW F 900 XR.
• BMW F 900 GS.
• BMW F 900 GS Adventure.
• BMW F 800 GS.

Exact compatibility may vary according to generation, motorcycle model, version and production date. We recommend verifying BMW part number 12129829073 / NGK LMAR9J-9E against the motorcycle VIN before ordering.

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