The Champion equivalent to the NGK BMR6A spark plug is the CJ8 or RCJ8.
When replacing spark plugs, it's essential to use an equivalent that matches the original's specifications to ensure optimal engine performance and longevity. Spark plug manufacturers often provide cross-reference charts to help users find compatible alternatives across different brands.
Understanding Spark Plug Equivalents
Spark plug cross-referencing is a common practice, especially when the original brand or specific model is not readily available. While direct equivalents aim to provide similar performance, slight variations might exist in electrode materials, heat range, or resistance.
For the NGK BMR6A, its Champion counterparts are:
- CJ8: This is a standard Champion spark plug.
- RCJ8: The "R" signifies that it is a resistor-type spark plug. Both BM6A and BMR6A from NGK have resistance (the "R" in BMR6A), so the RCJ8 is often the more precise equivalent for BMR6A, although CJ8 might also be listed as a general equivalent for the BM6A series. It's crucial to match resistor type if the original plug had one, as it helps suppress electromagnetic interference (EMI) that can affect electronic components.
Spark Plug Cross-Reference Table
To further illustrate common equivalencies between Champion and NGK spark plugs, refer to the table below:
| Champion Equivalent | NGK Equivalent |
|---|---|
| CJ8 / RCJ8 | BM6A / BMR6A |
| J19LM / RJ19LM | B2LM / B3LM / BR2LM |
| JCJ6Y / RCJ6Y / CJ7Y / RCJ7Y | BPM7A / BPMR7A |
| RC12YC / QC12YC | BKR5ES / BKR5E |
This table highlights some of the widely used cross-references, providing clear alternatives for common applications, particularly in small engines, lawnmowers, and other power equipment.
Practical Insights for Replacement
When replacing spark plugs:
- Verify the heat range: Ensure the equivalent plug has a similar heat range to the original. An incorrect heat range can lead to pre-ignition or fouling.
- Check the thread size and reach: The new plug must fit correctly into the cylinder head.
- Confirm resistor vs. non-resistor: If your engine's electronic system requires a resistor plug, ensure the replacement is also a resistor type (indicated by 'R' in the Champion model number, like RCJ8).
- Gap the plug correctly: Always check and adjust the gap of the new spark plug according to your engine manufacturer's specifications before installation.
- Torque specifications: Install the spark plug to the recommended torque specifications to prevent damage to the threads or the plug itself.
Using the correct spark plug equivalent ensures reliable starting, efficient fuel combustion, and prevents potential damage to your equipment.
