WhichPartFits.com

Spark Plug

Champion CJ8Y

16 associated model records

Identity: Unclassified

The Champion CJ8Y is listed as a part-number spark plug in 16 model records across 1 brand. Those records reference OEM part number 90023Y. Associated equipment records include Echo CS-310, Echo CS-330T, Echo CS-352, Echo CS-355T, Echo CS-400, and 11 more. 1 record includes an assigned confidence, source type, and review date.

Verify before ordering: Fitment can vary by serial number, production date, region, and sub-model. Match the OEM number and physical dimensions before ordering.

Amazon Buying Check

Use the Amazon listing to compare kit contents, seller details, shipping, and OEM compatibility notes before ordering.

As an Amazon Associate, WhichPartFits may earn from qualifying purchases. Match the OEM number, dimensions, and model variant before buying.

Model Records

BrandModelOEM #ConfidenceSourceReviewedEvidence
EchoCS-31090023YConfidence not assignedEvidence source not recordedNot yet independently reviewed0.6mm gapChainsaw
EchoCS-330T90023YConfidence not assignedEvidence source not recordedNot yet independently reviewed0.6mm gapChainsaw
EchoCS-35290023YConfidence not assignedEvidence source not recordedNot yet independently reviewed0.6mm gapChainsaw
EchoCS-355T90023YConfidence not assignedEvidence source not recordedNot yet independently reviewed0.6mm gapChainsaw
EchoCS-40090023YConfidence not assignedEvidence source not recordedNot yet independently reviewed0.6mm gapChainsaw
EchoCS-44090023YConfidence not assignedEvidence source not recordedNot yet independently reviewed0.6mm gapChainsaw
EchoCS-500P90023YConfidence not assignedEvidence source not recordedNot yet independently reviewed0.6mm gapChainsaw
EchoCS-590 Timber Wolf90023YConfidence not assignedEvidence source not recordedNot yet independently reviewed0.6mm gapChainsaw
EchoPB-250LN90023YConfidence not assignedEvidence source not recordedNot yet independently reviewed0.6mm gapHandheld Blower
EchoPB-580T90023YConfidence not assignedEvidence source not recordedNot yet independently reviewed0.6mm gapBackpack Blower
EchoSRM-21090023YConfidence not assignedEvidence source not recordedNot yet independently reviewed0.6mm gapTrimmer
EchoSRM-22590023YMediumAftermarket catalog2026-05-200.6mm plug gapTrimmer
EchoSRM-23090023YConfidence not assignedEvidence source not recordedNot yet independently reviewed0.6mm gapTrimmer
EchoSRM-26690023YConfidence not assignedEvidence source not recordedNot yet independently reviewed0.6mm gapTrimmer
EchoSRM-28090023YConfidence not assignedEvidence source not recordedNot yet independently reviewed0.6mm gapTrimmer
EchoSRM-31090023YConfidence not assignedEvidence source not recordedNot yet independently reviewed0.6mm gapTrimmer

What this part is

Champion CJ8Y is listed here as a part-number spark plug option. Identity describes the named part, not automatic compatibility with every model record. Confirm the removed part, model plate, and seller listing details before buying.

Recorded identity categories

  • Unclassified: 16 model records

OEM, OEM-specified, aftermarket, and cross-reference identities are reported separately. Unclassified records are not promoted to confirmed fitment.

Recorded OEM references

90023Y

Alternate spellings

CJ8Y 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

  • 0.6mm gap
  • 0.6mm plug gap

Symptoms that suggest replacement

  • Won't start
  • Hard hot restart
  • Rough idle
  • Fuel-fouled or carbon-heavy plug

How to verify before buying

  • Treat the model rows above as research leads, not confirmed fits, unless the individual relationship includes adequate review evidence.
  • 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.