Skip to content
SMART-O® Find my plug

Plug specification guide

18 core sizes.One reference system.

A simplified reference page for SMART-O® plug families, thread logic and fitment support. Always confirm the original plug dimensions before installation.

SMART-O® 18 plug range reference visual

Reference

Use the chart before choosing a plug.

SMART-O® plug selection should be based on thread diameter, pitch, shank length, flange diameter and the original plug condition. This hub provides guidance, but the final match should always be checked physically.

Open Form-Fit-Function chart
SMART-O® Form-Fit-Function chart
01

Check thread

Confirm diameter and pitch against the removed plug.

02

Check shank and flange

Confirm the shank length and flange diameter are appropriate for the oil pan.

03

Inspect the pan

SMART-O® improves the drain point, but it does not repair severely damaged pan threads.