Autolite Spark Plug P/N:AP105
Fire up your outdoor power equipment quickly with the Autolite Xtreme Start Spark Plug XST254DP, an iridium-enhanced fine-wire plug. It's a direct-fit replacement for many listed air compressors, augers, blowers, brush cutters, and chain saws. See the "Vehicles it fits" section for the full list.
*26% quicker starts is a manufacturer claim measured against standard copper plugs.
Interchange: CS41 · CS42 · A3NX · STD361001
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
What equipment does the XST254DP fit?
It's listed for many air compressors, augers, blowers, brush cutters, and chain saws. Check the "Vehicles it fits" section for your exact model.
Is this plug pre-gapped?
Yes, it comes pre-gapped to 0.03 in (0.8 mm). Verify the gap matches your engine's specification and adjust carefully if needed before installing.
What are the thread and seat specs?
It has a 14 mm (M14-1.25) metric thread, a flat seat with an included crush washer, a 3/4 in hex, and a 0.374 in (9 mm) reach. Heat range is 9.
What is the center electrode made of?
It uses an iridium-enhanced fine-wire center electrode with a copper core, paired with a yttrium-enhanced ground electrode.
Which numbers does this plug cross-reference?
It interchanges with CS41, CS42, A3NX, and STD361001. Check the "Vehicles it fits" section to confirm it fits your equipment.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.