WhichPartFits.com

Spark Plug

Champion CJ8Y

16 compatible models

The Champion CJ8Y is an aftermarket spark plug compatible with 16 models across 1 brand. It is a direct cross-reference for OEM part number 90023Y. Compatible equipment includes Echo CS-310, Echo CS-330T, Echo CS-352, Echo CS-355T, Echo CS-400, and 11 more.

See a wrong fitment? Report a correction.
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.

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Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.

Compatible Models

BrandModelOEM #ConfidenceSourceReviewedEvidence
EchoCS-31090023YMediumAftermarket catalog2026-05-200.6mm gapChainsaw
EchoCS-330T90023YMediumAftermarket catalog2026-05-200.6mm gapChainsaw
EchoCS-35290023YMediumAftermarket catalog2026-05-200.6mm gapChainsaw
EchoCS-355T90023YMediumAftermarket catalog2026-05-200.6mm gapChainsaw
EchoCS-40090023YMediumAftermarket catalog2026-05-200.6mm gapChainsaw
EchoCS-44090023YMediumAftermarket catalog2026-05-200.6mm gapChainsaw
EchoCS-500P90023YMediumAftermarket catalog2026-05-200.6mm gapChainsaw
EchoCS-590 Timber Wolf90023YMediumAftermarket catalog2026-05-200.6mm gapChainsaw
EchoPB-250LN90023YMediumAftermarket catalog2026-05-200.6mm gapHandheld Blower
EchoPB-580T90023YMediumAftermarket catalog2026-05-200.6mm gapBackpack Blower
EchoSRM-21090023YMediumAftermarket catalog2026-05-200.6mm gapTrimmer
EchoSRM-22590023YMediumAftermarket catalog2026-05-200.6mm plug gapTrimmer
EchoSRM-23090023YMediumAftermarket catalog2026-05-200.6mm gapTrimmer
EchoSRM-26690023YMediumAftermarket catalog2026-05-200.6mm gapTrimmer
EchoSRM-28090023YMediumAftermarket catalog2026-05-200.6mm gapTrimmer
EchoSRM-31090023YMediumAftermarket catalog2026-05-200.6mm gapTrimmer

What this part is

Champion CJ8Y 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

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

  • 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

Echo CS-310 spark plugEcho CS-330T spark plugEcho CS-352 spark plugEcho CS-355T spark plugEcho CS-400 spark plugEcho CS-440 spark plugEcho CS-500P spark plugEcho CS-590 Timber Wolf spark plugChampion RC12YC spark plugNGK BPR5ES spark plugNGK BPM8Y spark plugNGK BPMR8Y spark plugChampion RS12YC spark plugNGK BPR6ES spark plug

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.