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Automotive

Beck/Arnley 039-6579 Spark Plug Tube Seal

Automotive3.4· 35 Amazon ratings

Bias-adjusted across 35 Amazon ratings, Bayesian-shrunk to the category prior so the headline score reflects relative quality — not a raw star average. Cohort: Automotive.

11.7%
Percentile · Global
10.9%
Percentile · Cohort
Automotive
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Beck/Arnley 039-6579 Spark Plug Tube Seal

How the score was built

Amazon ratings
35

used for the Bayesian percentile

Raw star average
3.4 / 5

unadjusted Amazon mean

Bayesian avg
4.06

raw rating shrunk to the category prior

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Same category · Automotive

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