NGK Spark Plug Wire Set P/N:4414
NGK 55004 spark plug wire set for the 2005-2010 Subaru Forester H4 2.5L and other vehicles carries high-voltage current from the ignition to each spark plug. It is one of the NGK spark plug wire sets with an ultra-low resistance mag core.
Worn wires can show up as a misfire or rough running, or as cracked boots when you look over a cool, stopped engine. Those signs alone do not prove the wires are the problem, since a tired spark plug can misfire too. The set has four wires, one per cylinder, built to OEM tolerances with OE quality or better materials.
This is a four-wire spark plug wire set for the 2005-2010 Subaru Forester H4 2.5L, the 2005-2009 Subaru Outback H4 2.5L and the 2005-2011 Subaru Impreza H4 2.5L. If your car is not one of those, open the "Vehicles it fits" section to check your exact model and engine.
Fit and size
Build and materials
Interchange: 175-6219 · 35-4437 · 671-4305 · RC-FX101
700063 · 09865 · 9865 · 4733 · 184081 · 55504 · 7590
This part cross-references / interchanges with the following part numbers:
Are these the right spark plug wires for a 2010 Subaru Forester H4 2.5L, part of the 2005-2010 range?
Yes. NGK 55004 fits the 2005-2010 Subaru Forester H4 2.5L, which includes a 2010 model with that engine. For other cars, open the "Vehicles it fits" section.
How do these NGK plug wires cut radio and electrical noise?
NGK 55004 has a stainless steel winding over a ferrite magnetic core, which gives ultra-low resistance and EMI/RFI noise suppression.
What is the outer jacket on this NGK wire made of?
The outer jacket is high-temp silicone built to withstand temperatures greater than 250 degrees C. The inner insulation is EPDM or silicone.
Is the NGK wire set number RC-FX101 the same as 55004?
Yes. NGK lists this set under 55004 and under RC-FX101, so either number finds the same wire set.
How can I tell if these spark plug wires are worn?
With the engine off and cool, look for cracked boots or damaged insulation. A misfire while driving can also be a sign; a shop can test the wires.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.