

⚡ Ignite your engine’s potential with Champion precision!
The Champion RJ19LM spark plug delivers OE-level ignition performance with a durable copper core and precise 14x9.5mm thread fit, designed specifically for small engines like lawnmowers and chainsaws. Trusted by professionals and backed by a 4.8-star rating, it ensures reliable starts and improved engine efficiency, all crafted with quality manufacturing standards.
| ASIN | B003RJS3HI |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #27,927 in Automotive ( See Top 100 in Automotive ) #152 in Automotive Replacement Spark Plugs |
| Brand | Champion |
| Core Material | Copper |
| Customer Reviews | 4.8 4.8 out of 5 stars (4,035) |
| Date First Available | October 30, 2010 |
| Global Trade Identification Number | 05010874509481 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.76 ounces |
| Item model number | RJ19LM |
| Manufacturer | Champion |
| Manufacturer Part Number | RJ19LM |
| Model | CHAMPION_21030319_5010874509481 |
| Position | Center |
| Product Dimensions | 3.94 x 3.94 x 3.94 inches |
| Thread Size | 14x9.5mm |
| Top Material Type | Metal |
| UPC | 802167303853 |
| Vehicle Service Type | Motosierras,Motosierras. |
B**Z
Reliable Spark Plug for Small Engine Maintenance
This Champion RJ19LM spark plug is the recommended replacement for my Craftsman lawn mower model 917.376651. Installation was simple, and the plug worked as expected. I noticed an immediate improvement in engine performance. This quality spark plug offers great value for keeping a small engine running smoothly.
A**R
High quality. Not made in China.
The right product for the job. My mower runs well again. It's nice to buy a product not made in communist China.
R**S
Genuine Part
Cheap, not cheaply. Delivered on time. Worked the first crank. This is my second reorder.
D**O
The spark plug I needed
I received this as scheduled and it was exactly as described. My lawn mower is running better now, and I am a happy shopper.
O**T
Price
Received on time. Exact replacement
T**L
Sparks up.
Works as expected.
J**C
Perfect fit in go cart but having issues now
I have a go cart that’s a little older. It was well cared for and ran on the same plug for a few years. I decide to buy a new one and change oil, etc. the first pull this started right up and I swear it had a little more power. However after we ran it 2 times for around an hour I’m having trouble getting spark. Not sure it is the plugs problem but that’s the only thing I’ve changed. Will likely buy another and see if it’s the plug. Easy to install, good price point. I adjusted the gap but it didn’t seem to matter after I replace this one I will update this review and note if I am having same issue with new plug or if it’s something else.
R**K
Fits and works
Fits and works perfectly. Mower starts and runs better now
W**R
Excellent service and Quality product .
C**N
Funciona perfectamente en mi cortacésped
C**N
Parfait correspond bien à la description
J**N
Bra tändstift för gräsklippare
B**R
Geht Super für den Rasenmäher
Trustpilot
3 days ago
2 weeks ago