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STP S5

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exploded

Purchase Price - $3.59

Purchased From - Autozone

box

Total Inlet Opening Area (sq mm) - 399.11

inlet

Anti-drainback Valve - Nitrile

End Cap Construction - Glued Felt-like material

Filter Seam Construction - Glued

Filtering Media Material - Cellulose

Filter Media Surface Area (sq mm) - 185,708.2

Filter Media Volume (mm cubed) - 137,424.0

Notes - Was unable to get accurate pleat area data, neither felt end caps were properly glued on and actually came off before pleat data could be properly collected. This filter is practically identical to the ACDelco PF1218 in build quality. the following images show the severe construction problems. you can see where the end caps glue adhered and where it didn't.

not glued

fell apart

glue pattern

30µm filtering test image:

30um filtering test

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