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Home / Engine Parts / Spark Plugs / Tools / Adapters /E-Mag Spark Plug Adapters For 14MM Spark Plugs
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E-Mag Spark Plug Adapters For 14MM Spark Plugs

10 Reviews 4 Answered Questions
From $149.75 to $152.95
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Description Version Part No. Price Buy
E-Mag Spark Plug Adapters without Gaskets (4pk)Short Reach
08-06753
$149.75
Quantity
E-Mag Spark Plug Adapters with 07-00877 Gaskets (4pk)Short Reach
08-06753-1
$152.95
Quantity
E-Mag Spark Plug Adapters without Gaskets (4pk)Long Reach
08-07608
$149.75
Quantity
E-Mag Spark Plug Adapters with 07-00877 Gaskets (4pk)Long Reach
08-07608-1
$152.95
Quantity
Subtotal $0.00
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Overview

High performance electronic ignitions have demonstrated reliability, easier starting, greater power at altitude, and more efficient combustion. Auto plug adapters allow for an easy conversion of 18mm (standard engine plug thread) to 14mm (common auto plug thread). Both short reach and long reach adapters are available.

The Spark Plug Adapter allows you to use:

    High performance 14mm automotive plugs, that offer an almost unlimited variety of heat ranges, & electrode styles, designed specifically to take advantage of electronic ignitions. See ignition manufacturer documentation for recommendations
    Note: not all plugs are equally suited.

    Shorter plugs with 90° silicon boots provides greater clearance for sleeker cowls and less drag.

    Precious and semi precious metal racing spark plugs (the ultimate in reliability and long life). More speed, power, efficiency, as well as a cost savings each time you change spark plugs.

    Some kits also include 4 adapter gaskets - see kit description.

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Reviews

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Works as advertised

Victor V Verified Purchase

E-Mag Spark Plug Adapters 4Pk Short Reach
November 19, 2024

Just as advertised

David W Verified Purchase

E-Mag Spark Plug Adptr 4Pk With Copper Gaskets
November 28, 2023

These are the proper replacement for the 18mm to 14mm E-mag spark plug adapters. Kind of expensive and it would be really nice if you could buy just one- which was all I needed so I spent nearly $100 for a single piece. Oh well.

Jim M Verified Purchase

E-Mag Spark Plug Adptr 4Pk With Copper Gaskets
September 5, 2023

Bought these for my airboat after putting electronic ignition on it. Used Brisk ER14S plugs from Summit Racing. Works great. Engine is TIO540

Ronnie Verified Purchase

E-Mag Long Reach Plug Adapter 4Pk With Copper Gaskets
August 23, 2023

No problem.

Kenneth L Verified Purchase

E-Mag Spark Plug Adptr 4Pk With Copper Gaskets
September 26, 2022

Brad L Verified Purchase

E-Mag Spark Plug Adptr 4Pk With Copper Gaskets
June 22, 2021

Works great but way the hell out of line in price. However nothing else will work so you have to pay the price.

Wayne W
May 12, 2018

Worked as advertised for installing auto spark plugs in electronic ignition installation in aircraft engine.

Berry J
April 17, 2017

Good couplers, bad washers. The spark plug adapters thread much easer than the other brand that were originally installed. The only problem with the product was that the copper washers there oval (deformed) and were unusable.

Scott T Verified Purchase

E-Mag Long Reach Plug Adapter 4Pk With Copper Gaskets
July 5, 2023

These are pricy for a simple screw machine part... Especially when you look at the quality. I havent taken them out of the bag yet because Im not sure if Im going to use them or return them. The worse part of them is the spark plug seating surface, extreme machining chatter marks that could interfere with the sealing of the spark plug...

David V
April 6, 2020

Q&A

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Please note, Aircraft Spruce Canada's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce Canada assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Could you tell me which adapter and pre-cut harness part numbers I need to order for the short reach auto plugs (NGK BR8ES or BR8EIX)? You list two types of adapters, but I can't tell which is the short reach and which is the long reach.

We have just updated the webpage as this information was lacking. 08-06753 and 08-06753-1 listed on this page are the short reach version.

Q: On part # 08-06753, do I needs to add a gasket or use without gasket?

These adapters do not come with copper gaskets. The manufacturer recommends using gasket part # 07-00877. If you order part # 08-06753-1, the kit will include the correct gaskets. We sell the 08-06753 without gaskets as some customers have a large supply in their stock and are just looking for the adapters.

Q: What material are these adapters made of (steel, brass, aluminum)?

This is made of brass.

Q: What are the exact length of the long and short reach? I am asking that because I have already ordered your EFIS SPARK PLUG ADAPTERS and they are not 1/2 but more 3/8.

The shorts have an over all length of 11/16 and a thread length of 1/2. The long ones are 1" over all and 13/16" threads.

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