Spark Plug Thread Adaptors 18mm down to 14mm Steel (M14 & M18)
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Unbranded

Spark Plug Thread Adaptors 18mm down to 14mm Steel (M14 & M18)

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£3.49

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The Green Spark Plug Company
Postage £4.16

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  • Vast stock of vintage and modern spark plugs
  • Specializes in veteran, vintage, classic engines
  • Fast, worldwide shipping and secure packaging

About the product

This steel spark plug thread adaptor reduces an 18mm thread to 14mm and is for use with long-reach 14mm plugs.

Its seated shoulder raises the spark plug out of the chamber. The M14 thread has a 1.25mm pitch, while the M18 thread has a 1.5mm pitch. A brass version is available as HT34B; KLG ML50 is referenced for long-reach 18mm plugs.

At a glance

  • Steel adaptor reduces an 18mm thread to 14mm
  • For use with long-reach 14mm plugs
  • M14 pitch: 1.25mm; M18 pitch: 1.5mm
  • Seated shoulder raises the plug out of the chamber

Specifications8

Unbranded
Material
steel
Dimensions
18mm down to 14mm
Compatible with
Long-reach 14mm spark plugs
M14 thread pitch
1.25mm
M18 thread pitch
1.5mm
Seated shoulder
Raises the spark plug out of the chamber
Alternative reference
Brass version: HT34B
Long-reach 18mm plug reference
KLG ML50

Price history

Price at the shop, last 78 days

The price has stayed at £3.49 since 19 August.

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£3.49 at The Green Spark Plug Company Go to shop