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NGK / SPARK PLUG CROSS-REFERENCE

NGK 2546 Cross Reference

Explore the listed cross-reference options for NGK 2546. References on this page include ACDelco 41800 and Autolite AP3924.

NGK 2546 Specifications

RECORDED DATA

The recorded data lists a thread diameter of 14.0 mm, a thread reach of 19 mm and a hex size of 16 mm.

Thread diameter
14.0 mm
Thread reach
19 mm
Hex size
16 mm

Listed Replacement Part Numbers24

1–24 of 24
A reference, not a fitment guarantee.

Always confirm thread size, reach, seat type, heat range, and gap against the engine manufacturer’s recommendations before fitting a replacement.

What to Check Before Choosing a Replacement

Use the recorded dimensions as a starting point, not as a fitment guarantee.

Dimensions and Seat Type

Compare thread diameter, reach and seat type with the engine manufacturer's requirements. Similar-looking plugs can have different dimensions or seats.

Heat Range, Gap and Engine Application

A cross-reference match alone does not confirm heat range, electrode gap or engine application. Check the manufacturer's application catalogue and installation guidance before fitting another part number.

Read the spark plug specification guide