Spark Plug
Champion RCJ7Y
11 associated model records
The Champion RCJ7Y is listed as an aftermarket spark plug in 11 model records across 2 brands. Those records reference OEM part numbers 537254402, 952030150. Associated equipment records include Husqvarna 323L, Husqvarna 435, Husqvarna 440, Husqvarna 445, Husqvarna 450, and 6 more. 1 record includes an assigned confidence, source type, and review date.
Amazon Buying Check
Use the Amazon listing to compare kit contents, seller details, shipping, and OEM compatibility notes before ordering.
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Model Records
| Brand | Model | OEM # | Confidence | Source | Reviewed | Evidence | |
|---|---|---|---|---|---|---|---|
| Husqvarna | 323L | 537254402 | Confidence not assigned | Evidence source not recorded | Not yet independently reviewed | 0.5mm gap | Trimmer |
| Husqvarna | 435 | 537254402 | Confidence not assigned | Evidence source not recorded | Not yet independently reviewed | 0.5mm gap | Chainsaw |
| Husqvarna | 440 | 537254402 | Confidence not assigned | Evidence source not recorded | Not yet independently reviewed | 0.5mm gap | Chainsaw |
| Husqvarna | 445 | 537254402 | Confidence not assigned | Evidence source not recorded | Not yet independently reviewed | 0.5mm gap | Chainsaw |
| Husqvarna | 450 | 537254402 | Confidence not assigned | Evidence source not recorded | Not yet independently reviewed | 0.5mm gap | Chainsaw |
| Husqvarna | 455 Rancher | 537254402 | Medium | Aftermarket catalog | 2026-05-21 | 0.5mm gap | Chainsaw |
| Husqvarna | 460 Rancher | 537254402 | Confidence not assigned | Evidence source not recorded | Not yet independently reviewed | 0.5mm gap | Chainsaw |
| Poulan Pro | P3314 | 952030150 | Confidence not assigned | Evidence source not recorded | Not yet independently reviewed | Champion RCJ-7Y; 0.025" gap | Chainsaw |
| Poulan Pro | P3816 | 952030150 | Confidence not assigned | Evidence source not recorded | Not yet independently reviewed | Champion RCJ-7Y; 0.025" gap | Chainsaw |
| Poulan Pro | PP4218A | 952030150 | Confidence not assigned | Evidence source not recorded | Not yet independently reviewed | Champion RCJ-7Y; 0.025" gap | Chainsaw |
| Poulan Pro | PP4620AV | 952030150 | Confidence not assigned | Evidence source not recorded | Not yet independently reviewed | Champion RCJ-7Y; 0.025" gap | Chainsaw |
What this part is
Champion RCJ7Y is listed here as a spark plug replacement option. Use this page as a fitment cross-reference, then confirm the removed part, model plate, and seller listing details before buying.
OEM numbers it replaces
537254402, 952030150
Alternate spellings
RCJ7Y is the normalized part number used on this site.
Known exclusions
- No specific exclusion is listed in the current data. Still verify serial range, production variant, and removed-part details before ordering.
Dimensions and specs
- 0.5mm gap
- Champion RCJ-7Y; 0.025" gap
Symptoms that suggest replacement
- Won't start
- Hard hot restart
- Rough idle
- Fuel-fouled or carbon-heavy plug
How to verify before buying
- Confirm your equipment is one of the compatible models listed above.
- Match the OEM number, stamped part number, or physical spec against the removed part.
- Read the model-specific evidence, confidence, source, reviewed date, dimensions, notes, and exclusions before opening an Amazon listing.
Common wrong-fit mistakes
- Ordering from a broad model-family listing without checking the exact equipment model.
- Ignoring the old OEM number, stamped part number, or physical dimensions.
- Matching the plug number but missing the required gap, terminal style, or thread reach.
Related model and part pages
Amazon buying cautions
- Check that the Amazon listing includes the exact part number or verified cross-reference shown here.
- Compare kit contents, gaskets, fuel lines, bulbs, plugs, filters, and dimensions against the removed part before checkout.
- A listing title can mention the right model and still include the wrong revision, accessory, or generic substitute.