NGK Spark Plug - BR9HIX

Iridium spark plugs offer superior ignitability and durability due to the hardness and high melting point of iridium, leading to better engine performance and a longer lifespan compared to conventional spark plugs.

You must consult your engine's owner's manual or a compatible parts finder. The manual will specify the exact part number or cross-reference for the correct spark plug, including its thread size, reach, and heat range.

It is generally not recommended to clean the Iridium electrode tip of an NGK spark plug. Cleaning methods can potentially damage the delicate Iridium surface and negatively affect its performance and lifespan. If fouled, replacement is the recommended solution.

This refers to the plug's built-in resistor, which limits radio frequency interference (RFI) generated by the spark. A 5 kOhm rating is standard and helps prevent interference with electronic systems like radios or engine control units.

The NGK BR9HIX has a 14mm outer thread diameter and a thread length (reach) of 12.7mm.

The hex nut size required for the NGK BR9HIX is 20.8 mm.

Check if the spark plug is properly seated and tightened. Verify compatibility with the engine. Inspect the plug for fouling or damage; replace if necessary.

Ensure the spark plug wire is securely connected. Check for any carbon buildup on the plug's electrode. Confirm the correct spark plug is installed.

A worn or fouled spark plug can impact efficiency. Ensure the NGK BR9HIX is the correct plug and check for proper installation. Consider replacement if the plug is old.