Maxpower 33BR2LM Spark Plug for Riding Lawn Mowers

What It Is

The Maxpower 33BR2LM Spark Plug is a replacement ignition component for riding lawn mowers and small engines. It generates the spark needed to ignite the fuel-air mixture in the combustion chamber, making it essential for starting and running your mower.

Fitment & Compatibility

Before buying, check your mower’s engine brand and model. This plug is designed for 14mm thread diameter, 0.750-inch reach, and a 13/16-inch hex size. It replaces OEM plugs like Champion RC12YC, Autolite 3923, and NGK BPR5ES. It fits many engines from Briggs & Stratton, Kohler, Tecumseh, and others in riding mowers, zero-turns, and garden tractors. Verify your engine’s spark plug gap requirement (typically 0.030 inch) and adjust the plug’s pre-set gap if needed.

Key Things to Know

• Quality: Copper-core design, durable for standard use. Not iridium or platinum—fine for typical mowing but shorter lifespan than premium plugs.
• Installation: Easy—just remove the old plug with a socket wrench, hand-tighten the new one, then torque to 20-25 ft-lbs. Overtightening can crack the insulator.
• Gap Check: The plug comes pre-gapped, but always verify with a feeler gauge. Incorrect gap causes misfires or hard starting.
• Common Gotcha: Double-check your engine’s thread reach—using a plug that’s too long can hit the piston; too short can cause poor sealing.

Should You Buy It

If you need a reliable, budget-friendly replacement for a common riding mower spark plug and your engine matches the 14mm/0.750-inch specs, this is a solid choice. It’s not for high-performance or premium builds, but for everyday mowing, it gets the job done without overspending.