NGK Spark Plugs 10-Pack CMR7H (3066) Resistor for Lawn Mowers — OEM Fit, RFI Suppression

NGK Genuine 10-pack resistor spark plugs (model CMR7H / 3066) provide reliable, OEM-level ignition replacement for compatible lawn mowers and small engines.

These NGK standard spark plugs are sold as a factory 10-pack and are designed to match original-equipment specifications for a range of garden machinery models that accept the CMR7H/3066 plug. Each plug includes resistor construction to reduce electrical interference with radios and onboard electronics, and the set comes in original NGK packaging and hardware for straightforward installation and storage.

Which engines and mower models will these plugs fit?

The NGK CMR7H (3066) is a commonly used standard spark plug for many small engines and lawn mower models. Check your engine’s manual or existing plug part number to confirm compatibility before purchasing.

• Fits listed machines such as B&Q MC018, Beast Lawn 36FBM1, 54FBM19, M36BDB, M36FDB
• Suitable where NGK part number 3066 or CMR7H is specified
• Works for many single-cylinder 4-stroke petrol engines used in garden equipment
• Always verify thread size and heat range against your engine requirements

How easy is it to replace the spark plugs yourself?

Swapping spark plugs is a simple maintenance task for most small-engine owners with basic tools and a moment of care. Follow safety steps like disconnecting the spark lead and letting the engine cool before removing the old plug.

• Requires a correctly sized spark-plug socket and torque wrench or hand tightness per manufacturer guidance
• Gap is set to NGK specifications at the factory for typical small engines
• Includes ten plugs so you can service multiple machines or keep spares on hand
• Original NGK packaging and hardware help protect plugs until installation

What are the technical features of the NGK 3066/CMR7H resistor plug?

The CMR7H is a standard, resistor-type spark plug built to NGK’s conventional design standards. It provides consistent spark delivery while minimizing electromagnetic interference, which is useful in equipment fitted with electronic components.

• Resistor core reduces radio-frequency interference with electronics
• Standard heat range appropriate for many lawn mower engines
• Durable construction for routine maintenance intervals on small engines
• Sold in a 10-pack to simplify fleet maintenance or keep multiple spares

What should I check before buying this 10-pack?

Confirm fitment for your specific engine and review the owner's manual or existing plug code. Buying a multi-pack is cost-effective but only useful if the part number matches your engine’s requirements.

• Match NGK part number 3066 or CMR7H with your current spark plug code
• Verify thread size, reach, and hex size for proper fit and sealing
• Confirm heat range suitability for your engine type and operating conditions
• Use Amazon or manufacturer fitment tools where available to double-check compatibility

Who is this for: This NGK 10-pack is aimed at homeowners, landscapers, and small-engine technicians who need dependable, OEM-spec replacement spark plugs for multiple machines or to keep a supply of spares. It suits anyone maintaining lawn mowers, garden tractors, or similar single-cylinder petrol engines that specify NGK CMR7H / 3066 plugs and who prefer genuine NGK components in original packaging for consistent performance and inventory convenience.