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A. It is an M8 x 1.0 glowplug adaptor for diesel compression testing on Audi, Chrysler, Seat, Skoda and Volkswagen vehicles.
A. Each engine family uses specific glowplug threads; correct adaptors ensure testers seal properly.
A. When performing compression tests on engines using M8 x 1.0 glowplug threads.
A. Proper thread matching prevents cylinder head damage and ensures leak‑free compression readings.
A. Inspect threads, apply light oil and ensure the sealing surface is clean.
A. It fits 314 Series kits unless otherwise stated in older model notes.
A. Audi, VW Group and certain Chrysler diesel engines with M8 x 1.0 glowplug ports.
A. Keep it in labelled compression tester compartments with other glowplug adaptors.
A. Avoid overtightening to prevent stripping threads in the cylinder head.
A. “31421570V2 M8 glowplug adaptor VW Group” or similar."
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