NGK BPMR7A (4626) Resistor Spark Plug – The #1 Plug for Stihl, Husqvarna, Echo & More

The NGK BPMR7A (4626) is the single most popular spark plug in professional chainsaw and cut-off saw fleets worldwide. With its built-in 5 kΩ resistor, copper-cored center electrode, and proven cold-heat range of 7, this plug delivers lightning-fast starts, rock-solid idle, and maximum power even under the harshest conditions — from Alaskan milling to daily concrete cutting.

NGK’s legendary quality means virtually zero misfires, dramatically reduced radio interference (perfect for modern electronic ignitions), and service life that regularly exceeds 300+ hours in pro saws when run on quality 50:1 fuel. One fresh BPMR7A can instantly cure hard starting, bogging, or that annoying “dies-when-hot” symptom so common with old or incorrect plugs.

Key Features & Benefits

• Resistor type (5 kΩ) – eliminates RFI that interferes with digital ignitions & radios
• Copper-core electrode – superior heat transfer prevents overheating & pre-ignition
• Heat range 7 – perfect balance for high-rpm 2-stroke engines
• Nickel alloy tip – extreme durability & fouling resistance
• Cold-rolled threads – prevents cross-threading in aluminum heads
• Triple gasket seal – zero combustion gas leakage
• Thread: 14 mm | Reach: 9.5 mm (3/8") | Hex: 19 mm (3/4") | Gap: factory pre-set 0.024–0.028"

Direct OEM Replacement For

• Stihl 11104007005 / 1110-400-7005
• Husqvarna 577484001 / 503235111
• Echo 15901010230 / 15901010630
• Honda 98073-57944
• Yamaha 90793-20098
• Makita, Dolmar, Jonsered, RedMax, Shindaiwa, and most 2-stroke 35–92 cc engines

Popular Models That Use BPMR7A

Stihl MS261, MS362, MS391, MS441, MS661, TS410, TS420, TS500i, TS700, TS800, 044, 046, 066, 088
Husqvarna 346XP, 353, 359, 365, 372XP, 390XP, 395XP, 545, 550XP, 555, 560XP, 572XP
Echo CS-590, CS-620P, CS-680, CS-8000

Cross Reference Chart

Pro Tip – Service Interval

Commercial users: replace every 100–150 hours or at the start of each season. A fresh set of BPMR7A plugs is the cheapest power-up you’ll ever buy.
Regular maintenance, including spark plug replacement, is vital for the health and performance of your outdoor equipment. This spark plug from NGK is designed to deliver reliable ignition, reduce radio frequency interference, and promote longer engine life. From HL SUPPLY, this plug is your assurance of top performance across various outdoor equipment brands.

Stock up now — NGK BPMR7A (4626) at the absolute best price. In stock and ready to ship today from HL SUPPLY!