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Automotive

Magnetic Oil Drain Plug Magnetic Sump Drain Nut Oil Drain Bolt (M12X1.25,Silver)

Automotive3.8· 1,749 Amazon ratings

Bias-adjusted across 1,749 Amazon ratings, Bayesian-shrunk to the category prior so the headline score reflects relative quality — not a raw star average. Cohort: Automotive.

5.5%
Percentile · Global
4.7%
Percentile · Cohort
Automotive
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Magnetic Oil Drain Plug Magnetic Sump Drain Nut Oil Drain Bolt (M12X1.25,Silver)

How the score was built

Amazon ratings
1,749

used for the Bayesian percentile

Raw star average
3.8 / 5

unadjusted Amazon mean

Bayesian avg
3.83

raw rating shrunk to the category prior

Reviewer-graph z
0.707

bias-corrected vs. each reviewer's baseline (0 qualifying)

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Same category · Automotive

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