Rankquant
MethodologyAbout

Automotive

Standard Motor Products SPP145E Spark Plug Boot

Automotive4.8· 4,530 Amazon ratings

Bias-adjusted across 4,530 Amazon ratings, Bayesian-shrunk to the category prior so the headline score reflects relative quality — not a raw star average. Cohort: Automotive.

99.4%
Percentile · Global
99.6%
Percentile · Cohort
Automotive
View on Amazon

Amazon Associates link · as an Amazon Associate we earn from qualifying purchases, at no extra cost to you.

Standard Motor Products SPP145E Spark Plug Boot

How the score was built

Amazon ratings
4,530

used for the Bayesian percentile

Raw star average
4.8 / 5

unadjusted Amazon mean

Bayesian avg
4.79

raw rating shrunk to the category prior

Buy it: View on Amazon →

Same category · Automotive

Similar products