Torch Takumi Spark Plug - BPMR4A

The Takumi BM4RSTC Performance Spark Plug is designed to provide reliable ignition performance for...

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OnBuy.comTorch Takumi Spark Plug Replaces Ngk Bpmr4a Fits Honda G100 Engine Water Pump 5056499459053
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Product Information

Full details

The Torch Takumi BM4RSTC Performance Spark Plug is designed for small engine owners and technicians who need a reliable, high-performance ignition solution for equipment like the Honda G100 water pump engine. It serves as a direct, precision-engineered replacement for the popular NGK BPMR4A, providing consistent spark reliability under various load conditions. While it is highly compatible with numerous industry-standard alternatives, users should verify their specific engine's heat range and thread specifications before installation to ensure optimal compatibility.

All features

Model Part NumberBM4RSTC
BrandTakumi

Extended Product Information

FAQs

Is the Takumi BM4RSTC compatible with NGK BPMR4A?

Yes, the BM4RSTC is designed specifically as a direct replacement for the NGK BPMR4A (6028).

Which engines does this spark plug typically support?

It is primarily used in small engines, including the Honda G100 engine commonly found in water pumps.

Does this spark plug work with Champion plugs?

Yes, it acts as a cross-reference for Champion 863 and Champion RCJ501H.

Should I gap the plug before installing it?

Yes, always verify the gap with a feeler gauge to match the specific gap requirements of your engine's service manual.

What happens if I use the wrong spark plug?

Using the wrong heat range or thread depth can cause engine knocking, power loss, or potentially catastrophic damage to the cylinder head and piston.

Troubleshooting

Engine fails to start after installation

Verify that the spark plug wire is firmly connected and check that the spark plug gap is set to the manufacturer's recommended clearance.

Engine runs roughly or misfires

Check the plug for signs of fouling, ensure it is tightened to the correct torque, and inspect the ignition coil for potential output issues.

Pros and Cons

Pros

  • Seamless installation as a direct cross-reference for multiple brands
  • Proven performance in demanding small engine applications like water pumps
  • High availability and compatibility across common industry brands
  • Designed to maintain consistent spark intensity under load

Cons

  • Not intended for high-performance racing or non-compatible engine types
  • Requires proper gapping before installation to ensure engine safety
  • Only compatible with specific small engine models listed in the cross-reference

Setup, Compatibility & Care

To ensure peak performance, follow these guidelines:

  1. Verification: Always confirm the engine model matches the application specs. While this plug replaces NGK BPMR4A, Autolite 2976, and Bosch WSR8F, always check your owner's manual.
  2. Gapping: Check the electrode gap using a feeler gauge to meet the specific requirements of your engine's manufacturer.
  3. Installation: Hand-thread the spark plug into the cylinder head to prevent cross-threading, then tighten using a socket wrench only until seated.
  4. Care: Keep the porcelain insulator clean and free of debris. Periodically inspect the electrode for carbon buildup or signs of pre-ignition, replacing if necessary during your scheduled maintenance intervals.

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