Find the right part faster
Multiple models matched. Select your model to confirm fit.

Champion Spark Plug (RC12YC). The spark plug ignites the fuel and air mixture in the cylinder to power the engine. If the spark plug is burnt, fouled or damaged the engine may not start or may run rough.

Small engine Champion spark plug (RJ19LM). If the engine does not start, the spark plug may be defective. The spark plug should be replaced periodically during regular maintenance.

Briggs & Stratton Spark Plug (RJ19LM). If the engine does not start or runs poorly then the spark plug may be defective and will need replacement.

MTD Spark Plug. The spark plug ignites the fuel and air mixture in the cylinder to power the engine. If the spark plug is burnt, fouled or damaged the engine may not start or may run rough.

Small engine NGK spark plug (BPR6ES). If the engine does not start, the spark plug may be defective. The spark plug should be replaced periodically during regular maintenance.

Champion Spark Plug (RJ17LM)

Champion Spark Plug (RCJ8Y). The spark plug ignites the fuel and air mixture in the cylinder to power the engine. If the spark plug is burnt, fouled or damaged the engine may not start or may run rough.

NGK Spark Plug (BPM7Y)

Plug cover

Spark plug boot

Plug-spark f5rtc

Champion Spark Plug (RN4C)

Briggs & Stratton Spark Plug (XC92YC)

Spark plug boot

Boot-spark plug
A fouled or worn spark plug is one of the easiest snowblower fixes — and one of the most common. If your Craftsman snowblower won't start or fires weakly, a fresh spark plug is often all you need. Craftsman snowblowers use specific heat-range plugs to match their engines' combustion characteristics. Using the wrong plug can cause hard starting, rough idle, or poor performance in cold weather.
Find the exact spark plug for your Craftsman model by entering your model number below. Repair Clinic stocks OEM spark plugs that meet Craftsman's original specifications, ensuring reliable ignition when you need your snowblower most.
Keep a spare spark plug in your snowblower maintenance kit. They're inexpensive and take less than a minute to swap. Find Craftsman snowblower spark plug options or enter your Craftsman model number to get the exact plug your engine needs.
Craftsman snowblowers use Champion or NGK spark plugs matched to their specific engine — usually a Champion RJ19LM or equivalent. The heat range is critical: too cold and the plug fouls; too hot and it causes detonation. Always verify your model number in Repair Clinic's parts lookup tool to confirm the correct plug type and gap.
A fouled plug (black, sooty coating) usually means the engine is running too rich — too much fuel, not enough air. Before replacing the plug again, check your air filter for clogs and clean it or replace it. Old fuel with ethanol can also gum up the plug faster. If the plug fouls repeatedly after each cleaning, the carburetor may need a rebuild kit.
While some universal plugs may physically fit, OEM plugs are designed for your specific engine's compression ratio and combustion chamber design. Using the wrong heat range causes starting problems or performance issues. Use your model number to find the exact OEM plug — it costs just a few dollars more and help ensure reliable winter starts.
Replace the spark plug every season before winter storage, or if it's visibly fouled or corroded. If your snowblower sits for months between uses, a fresh plug is cheap insurance against hard starting when you need it most. Always gap the plug to your engine's specification — typically 0.025 to 0.035 inches for small engines.


Keep your Craftsman snowblower running smoothly by ordering genuine spark plug parts from Repair Clinic. Our user-friendly model and part number lookup ensures you find the right fit quickly. Plus, with our same-day shipping, order by 9:00 PM ET and have your parts shipped that day. Find additional parts like Craftsman Snowblower Parts or check out general snowblower parts. For installation tips, refer to our Snowblower Repair Help section.
On Craftsman snowblowers, look for the model number on the frame behind the engine, under the handle panel, or on the auger housing. The identification label may also include a serial number, so copy the complete model number exactly, including letters, numbers, and punctuation. Drop it into the search bar and you will see only the parts that fit your exact model. This filters the entire Craftsman snowblower catalog for the unit, not just one part category. If dirt or worn paint hides the label, clean the area and check the owner's manual for the same identification information. Matching the full model number before ordering helps avoid guesswork and gets your repair moving.

Regular spark plug replacement keeps your Craftsman Snowblower starting cleanly and running at full power. Repair Clinic stocks OEM spark plugs for a wide range of engines, along with installation videos and gap-setting guides. Use the model number lookup to confirm the exact spark plug specification for your engine, and keep a spare on hand for the next tune-up.

The eight most common reasons your snowblower is leaking gas and how to fix them. From worn carburetor gaskets to cracked fuel lines, this guide identifies potential issues and repair solutions to keep your snowblower running smoothly.

How to clean your snowblower carburetor to restore engine performance and fix starting issues. This guide covers symptoms of a dirty carburetor and step-by-step cleaning instructions.

Learn the top five reasons your snowblower's auger won't turn and how to fix it. From worn belts to broken shear pins, this guide covers common causes and repair solutions.