NGK LMAR9D-J Multiground Spark Plug – Nickel Alloy, Long-Life

PRODUCT OVERVIEW

The NGK LMAR9D-J Multiground Spark Plug is designed to meet strict OEM requirements where a multiple ground electrode plug is specified. Its nickel-alloy construction and multi-ground design help deliver consistent ignition performance and extended service life.

KEY FEATURES

• Part number: LMAR9D-J
• Multiground electrode design for even wear distribution
• Nickel-alloy center and ground electrodes for durability
• Helps reduce cold-start fouling compared with standard plugs
• Engineered to meet OEM specifications where multiground plugs are required

TECHNICAL DETAILS

Multiple-ground electrode spark plugs can feature two or more ground electrodes. As the plug fires, wear is distributed across the available electrodes, which can extend service life relative to a single ground electrode plug made from the same material.

The multiground layout can also assist in minimising cold-start fouling, as the spark can more easily find a clean path across the insulator if one electrode area becomes contaminated.

USAGE GUIDELINES

• Use only as a replacement where the original plug is a multiground type.
• Do not substitute for a single-ground, platinum, or iridium plug unless specifically approved by the vehicle or engine manufacturer.
• Always confirm correct part number and fitment for your specific engine before installation.

FITMENT NOTICE

No specific vehicle compatibility is provided for this part. Always check your vehicle handbook, existing spark plug markings, or a trusted parts catalogue to confirm that NGK LMAR9D-J is correct for your application before purchase and installation.