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P/N: EMC01301

ADAPTER, EXTRA LONG REACH, W/GASKET

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Approval
Condition New
Manufacturer Hartzell Engine Technologies
Dimensions L: 4 x W: 2 x H: 5 in
Weight 0.25 lbs
Unit of Measure Each
Retail Price $48.94
Your Price $39.15
Stock Status Expected ship date is 07-27-2026.

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Product Details

E-Magneto Adapters

E-MAG Auto Spark Plug Adapters Individual

Individual auto plug adapters for use with E-MAG electronic ignition systems. These single-unit adapters convert the 18mm aircraft cylinder thread to a 14mm automotive plug bore. Select the correct reach to match your cylinder: Short Reach (~1/2" thread depth), Long Reach (~3/4" thread depth), or Extra Long Reach for recessed-bore applications.

Adapters available:

  • EMC00101: short reach spark plug adapter
  • EMC00201: long reach spark plug adapter
  • EMC00301: extra long reach spark plug adapter

To identify your cylinder thread depth:

  • Short Reach (SR): Aircraft plug call-out contains the letter "M" (e.g., REM series). SR adapters reduce 18mm to 14mm thread for short reach (19mm) auto plugs (NGK BR8ES or BR8EIX).
  • Long Reach (LR/LRX): Aircraft plug call-out contains the letter "B" (e.g., REB series). LR adapters reduce 18mm to 14mm thread for long reach (26.5mm) auto plugs (Denso IKH27). LRX adapters are the same as LR except the hex head is extended to better fit certain Continental (six cylinder) heads where the plug insertion face is recessed.
  • Cylinder thread depth can also be measured directly. Short Reach (“SR”) adapters have external thread length of approximately 1/2”. Long Reach (“LR”) adapters have external thread length of approximately 3/4”.

Installation Note: Always install the spark plug into the adapter first (finger-tight and fully seated), then install the combined assembly into the engine. Torque to 18 ft/lb through the spark plug only, do NOT torque the adapter directly. Use anti-seize sparingly on the engine-side threads only.

Adapter Part Number Individual vs Kit Reach Engine Copper Gasket

EMC01101

Individual

Short

Yes

EMC00101

Individual

Short

No

EMC01201

Individual

Long

Yes

EMC00201

Individual

Long

No

EMC01301

Individual

Extra Long

Yes

EMC00301

Individual

Extra Long

No

EMA74001

Set of 4

Short

4-Cylinder

Yes

EMB60401

Set of 6

Short

6-Cylinder

Yes

EMA73001

Set of 4

Long

4-Cylinder

Yes

EMB60301

Set of 6

Long

6-Cylinder

Yes

EMB60501

Set of 6

Extra Long

6-Cylinder

Yes

Note: LRX (Extra Long Reach) adapters feature an extended hex head to facilitate installation and removal in Continental 550-series and similar engines where the plug seat area is recessed.

WARNING: Cancer and/or Reproductive Harm - www.P65warnings.ca.gov

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