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NGK 6664 Iridium IX Spark Plug

(Honda Accord 1979, Prelude 1979-80, FL400R Pilot 1989-90, FL250 Odyssey 1977-80, XL175 1973-78; Porsche 911 1965-67, 1973; KTM 300 XC 2006-19 + 78 more models)

Manufacturer

Picture for manufacturer NGK Spark Plugs

Part Number

6664
7 reviews
Sale Price

$7.92

In Stock (10+)

delivery box

Usually delivered within 2 days

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Live-in-stock inventory

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Product Details

The NGK 6664 Iridium IX spark plug delivers superior ignition performance and extended service life for a wide range of automotive applications. Engineered with a fine-wire iridium center electrode and tapered ground electrode, this plug provides improved throttle response, enhanced fuel efficiency, and more reliable cold starts compared to conventional spark plugs.

Key Features:

  • Iridium center electrode provides durability and superior wear resistance
  • 0.6mm laser-welded fine-wire iridium tip focuses spark energy for optimal combustion
  • Tapered ground electrode reduces required voltage and extends plug life
  • Trivalent metal plating provides superior anti-corrosion and anti-seizing properties
  • Corrugated ribs prevent flashover and improve insulation
  • High-grade alumina silicate ceramic insulator ensures reliable performance

NGK Iridium IX spark plugs are designed to meet or exceed OE specifications, delivering consistent performance across a variety of driving conditions. Backed by over 80 years of ignition expertise, NGK spark plugs are trusted by automotive manufacturers and technicians worldwide for their quality and reliability.

Products specifications

Fits

Honda Accord 1979, Prelude 1979-80, FL400R Pilot 1989-90, FL250 Odyssey 1977-80, XL175 1973-78; Porsche 911 1965-67, 1973; KTM 300 XC 2006-19, 250 XC 2006-19, 300 XC-W 2006-18, 2023-24, 250 XC-W 2006-18, 2023-24 + 75 more models

Stock Number

6664

Part Number

BR7EIX

Manufacturer Heat Range

7

Ground Electrode Core Material

Nickel

Hex Size

13/16

Seat Type

FLAT

Ground Electrode Quantity

1

Electrical Terminal Type

Removable Nut

Center Electrode Tip Material

Iridium

Ground Configuration

Standard

Center Electrode Core Material

Copper

Reach

.75

Insulator Height

55.00

Pre-Gap Size

.032

Thread Diameter

14.00

Resistance

5000

Ground Electrode Tip Design

Taper Cut

My name is Doug Raber and I tell you the truth when I say autoplicity is a great site to shop for auto parts. The prices are low and the customer service is excellent.

Excellent price on the product and shipping! Ordered on Thursday night (after they closed) and they were shipped out Monday!

First time I've tried these guys. Had trouble getting this product from my normal source (backordered) but Autoplicity shipped quickly and had a better price too! You know I will be back! Thanks!

Great customer service. Prompt shipment and excellent prices. I will defiantly be ordering from them again. Just wish I would have found them sooner!!

Great price, fast shipping and the items was correct. A perfect transaction. Thank you!

I received my ARP head studs as described and on time with zero problems, and cheaper than anywhere else.Will use again!!!

I bought a bicycle rack. It seemed like the product was delivered before I had even known it was shipped. Great price!

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