NGK / SPARK PLUG CROSS-REFERENCE
NGK 7544 Cross Reference
Explore the listed cross-reference options for NGK 7544. References on this page include Autolite 4194 and Champion P-Z7HC.
NGK 7544 Specifications
RECORDED DATAThe recorded data lists a thread diameter of 10.0 mm, a thread reach of 12.7 mm and a hex size of 16 mm.
- Thread diameter
- 10.0 mm
- Thread reach
- 12.7 mm
- Hex size
- 16 mm
Listed Replacement Part Numbers22
1–22 of 22Always 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