Spark Plug Thread Adaptors 18mm down to 14mm Steel (M14 & M18)
by Unbranded
£3.49
GTIN05053557018405
EAN5053557018405
Prices updated 6 Apr 2026
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The Green Spark Plug Company
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Product Description
HT34A Pattern Spark Plugs Fittings Accessories Accessories Steel (we also sell this in Brass) Spark Plug Thread Adaptor 18mm down to 14mm For use with long reach 14mm plugs as the seated shoulder on the adaptor raises the spark plug out of the chamber. M14 = 1.25mm pitch M18 = 1.5mm pitch Looking for Long Reach 18mm Plugs? See our KLG ML50
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