NGK 3878 spark plug wire set for the 1999-2001 Hyundai Sonata V6 2.5L, the 2002-2005 Sonata V6 2.7L and other vehicles carries high-voltage current from the ignition to each spark plug. The NGK wire set has six wires, one for each cylinder of a V6.
A misfire, hard starting or cracked insulation that you can see with the engine off and cool can be signs of worn wires. Before you replace the wires, rule out worn spark plugs, a weak ignition coil and fuel or vacuum problems, which can also make an engine misfire.
The set is built to OEM tolerances with OE quality or better materials. It is listed for a wide range of Hyundai and Kia models, including the 2001 Kia Optima V6 2.5L, the 2002-2006 Optima V6 2.7L and the 2001-2006 Hyundai Santa Fe V6 2.7L. 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
One set of six spark plug wires.
Interchange: 025-0021 · 025-0031 · 175-6205 · 35-6086 · 671-6220 · 35-PF77694 · RC-XX91
97078 · CH76173 · 700195 · 700211 · 09014 · 09015 · 9014 · 9015 · 9642 · 9661 · 6086 · 186018 · 55803 · 7707
This part cross-references / interchanges with the following part numbers:
Does the NGK 3878 wire set fit the 2001-2006 Hyundai Santa Fe V6 2.7L?
Yes. NGK 3878 is listed for the 2001-2006 Hyundai Santa Fe V6 2.7L. For another car or engine, open the "Vehicles it fits" section.
How many NGK plug wires come in this set?
NGK 3878 is one set of six wires, one for each cylinder of a V6 engine.
Does this NGK wire help with radio interference?
Yes. The variable pitch magnetic core cable in NGK 3878 produces the impedance needed to suppress EMI/RFI noise across the frequency spectrum.
What warranty backs these NGK spark plug wire sets?
NGK covers this wire set with a limited lifetime warranty. The package has the details.
Are the boots on these NGK blue spark plug wires sealed to the cable?
Yes. A silicone sealer glues each spark plug boot to the cable, which gives a watertight seal.
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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.
