Mercury 8M0070991 Spark Plug NGK BKR6ES

Mercury-MerCruiser 33-8M0070991 NGK BKR6ES Spark Plug

The Mercury-MerCruiser 33-8M0070991 Spark Plug is a genuine OEM NGK BKR6ES replacement spark plug for compatible Mercury and MerCruiser applications. This spark plug is designed to replace the original plug where specified by the Mercury-MerCruiser parts diagram or service manual.

Using the correct OEM-specified spark plug helps support proper ignition performance, reliable starting, smooth operation, and efficient combustion. Always verify fitment by engine model, serial number, spark plug specification, service manual, or existing plug part number before ordering.

Product Features:

• Genuine OEM Mercury-MerCruiser spark plug
• NGK BKR6ES spark plug
• Sold individually
• Designed for compatible Mercury and MerCruiser ignition applications
• Direct replacement where part number 33-8M0070991 or 8M0070991 is specified
• Helps support reliable ignition and engine performance
• Ideal for routine tune-up and maintenance service

Product Details:

• Brand: Mercury-MerCruiser
• Manufacturer Part Number: 33-8M0070991
• OEM Part Number: 8M0070991
• Part Type: Spark Plug
• Spark Plug: NGK BKR6ES
• Quantity: 1 spark plug
• Application: Compatible Mercury and MerCruiser applications

Service Note: Always follow your Mercury or MerCruiser service manual for the correct spark plug type, gap specification, torque, replacement interval, and installation procedure for your specific engine.

Fitment Note: Spark plug fitment should be verified by engine model, serial number, ignition system, service manual, parts diagram, spark plug specification, and existing plug part number before ordering. Please confirm this NGK BKR6ES spark plug is correct for your Mercury or MerCruiser application before purchasing.

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