Adefol CMR7H Spark Plugs 10-Pack — Replacement for Husqvarna Stihl Redmax Engines, OEM Cross-Reference

Adefol 10 Pack CMR7H spark plugs provide a reliable, OEM-compatible ignition replacement for small two-stroke and four-stroke outdoor power equipment. These CMR7H spark plugs are engineered to match common OEM specs used by brands like Husqvarna, Stihl, Redmax, Shindaiwa and Echo, making them a practical replacement for worn or fouled original plugs. Sold as a set of ten, they offer cost-effective maintenance for homeowners, landscapers and rental shops that service blowers, trimmers, brushcutters and chainsaws. Each plug is manufactured to fit the listed part numbers and model families, so you can restore consistent starting and smoother running without hunting down brand-specific units.

Which engines and models will these spark plugs fit?

The Adefol CMR7H is designed to substitute common OEM part numbers like NGK CMR7H and Champion RZ7C and cross-references Husqvarna, Redmax, Stihl, Shindaiwa and Echo models. Compatibility covers many blowers, trimmers, brushcutters, chain saws and small garden engines listed by the major manufacturers.

• Husqvarna: fits blower, brushcutter and chainsaw model ranges including 350BF, 350BT, 560BFS, T435, 550XP and more.
• Stihl: compatible with blower and trimmer lines such as BR200, BG86, FS40, FS90 and FS110 series.
• Redmax/Shindaiwa/Echo: cross fits popular Strato-Charged blowers and many Redmax and Shindaiwa handheld units.
• OEM numbers replaced: Champion RZ7C, NGK CMR7H, Redmax 369991867, Husqvarna 506615101/544260901.

How do these spark plugs affect starting and running?

Using a fresh, correctly gapped spark plug improves ignition consistency, which translates to easier cold starting, steadier idling and more stable throttle response. These plugs are built to match the heat range and thread specifications of the referenced OEMs, so they operate within expected engine tolerances.

• Restores reliable spark for cleaner combustion and quicker starts.
• Reduces misfires and rough idle caused by fouled or degraded plugs.
• Maintains correct heat dissipation to avoid overheating or carbon build-up.
• Sold in packs of ten for regular maintenance or shop use.

What should I check before installing a replacement CMR7H plug?

Confirm thread size, reach and electrode gap match your engine’s specifications and verify the OEM cross-reference numbers. Inspect the engine’s cylinder head for damage and check that the ignition system and coil are functioning properly; a new plug won't fix underlying electrical issues.

• Verify OEM part numbers and model compatibility from your equipment manual.
• Set or confirm the electrode gap per manufacturer recommendation before installation.
• Replace damaged spark plug boots or connectors to ensure a solid electrical connection.
• Torque the plug to specified values to prevent thread damage or poor sealing.

How many plugs come in the pack and what warranty/support is offered?

This listing includes ten Adefol CMR7H spark plugs—enough for multiple service intervals or to equip a small fleet. Adefol indicates each spare part is engineered and tested, and the listing offers a refund policy if you are not satisfied with the purchase.

• Package contents: 10 x CMR7H spark plugs.
• Cross-references included for easy parts lookup and replacement planning.
• Customer support and refund options are available from the seller for dissatisfaction.

Who is this for: Landscapers, rental businesses, DIYers and professional mechanics who maintain handheld outdoor power equipment and need an economical, OEM-compatible ignition replacement. If you service multiple machines or want to keep spares on hand for seasonal tune-ups, this 10-pack delivers consistent fit and performance across many Husqvarna, Stihl, Redmax, Shindaiwa and Echo models without buying brand-specific original plugs.

FAQ

Q: Are these plugs true replacements for NGK CMR7H and Champion RZ7C?

A: Yes, the Adefol CMR7H cross-references NGK CMR7H and Champion RZ7C and fits the listed OEM part numbers.

Q: Is the pack enough for multiple machines?

A: Yes, the 10-pack is convenient for servicing multiple units or stocking spares for seasonal maintenance.