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NGK 4091 R5671A-7 Racing Spark Plug Heat Range 7

Manufacturer

Picture for manufacturer NGK Spark Plugs

Part Number

4091
12 reviews
Sale Price

$6.76

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

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Live-in-stock inventory

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Fitment guaranteed

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Product Details

The NGK R5671A-7 Racing Spark Plug is engineered to withstand the extreme conditions found in high-performance racing engines. Designed for the harshest engine environments, this racing plug features special insulator nose configurations that improve throttle response and corrugated ribs that prevent flashover.

Key Features:

  • Pure alumina silicate ceramic insulator provides superior strength and better heat transfer
  • 98% pure copper core offers superior heat dissipation and conductivity
  • Triple seals prevent leakage
  • Trivalent metal plating delivers superior anti-corrosion and anti-seizing properties
  • V-cut center electrode design with 2.5mm nickel electrode
  • Non-resistor design for racing applications

Specifications:

  • Thread: 14mm diameter with 1.25mm pitch
  • Reach: 19mm (3/4")
  • Hex Size: 5/8" (16mm)
  • Gap: 0.031" (0.8mm)
  • Heat Range: 7
  • Seat Type: Gasket
  • Terminal Type: Solid
  • Non-projected ground electrode

Torque specifications: Cast iron heads 18-25.3 lb-ft, aluminum heads 18-21.6 lb-ft. This racing spark plug is designed for universal racing applications and replaces multiple OEM part numbers including Autolite 2615/393/3935, Champion 298/C63C, Bosch W5C/W5CC, Denso W22ES-U, and Motorcraft AG1.

Products specifications

Stock Number

4091

Part Number

R5671A-7

Electrical Terminal Type

Non-Removable Nut

Manufacturer Heat Range

7

Ground Electrode Core Material

Nickel

Seat Type

FLAT

Center Electrode Tip Material

Nickel

Ground Electrode Quantity

1

Hex Size

5/8

Ground Configuration

Standard

Center Electrode Core Material

Copper

Resistance

1

Ground Electrode Tip Design

Standard

Reach

.75

Insulator Height

50.50

Pre-Gap Size

.032

Thread Diameter

14.00

This is my first experience ordering from Autoplicity. I was searching for tires online and found that tire rack and Big O tires both listed the size/brand that I needed as out of stock. Auto closely said that they had many in stock and at the best prices. I was pleasantly surprised to receive them within 2 to 3 days. I will definitely be ordering from them again in the near future.

The OEM product is just as I expected. Not made of the best materials cone wise, but I knew that before I made the purchase. The speaker will last for the period of time I plan to keep the car. Sound quality is good. As long as you keep the audio a a moderate level.

Fast and easy, found answer to design problem on 3.5 eco boost

Best Price!!!

OEM part for my truck shell

Like the simplicity so far. Ordered my product on Sunday shipped out Tuesday so we'll see how fast and efficient shipping is.

Good

Great Place to shop for Auto Parts Very Fast shipping

I am extremely happy with Autoplicity from start to finish! They had the best prices online on Hawk Performance pads and were shipped the day I ordered. They were at my door step within two days of me ordering them! You can't beat that anywhere. Cheaper and faster, it truely dosen't get any better than that.

Comparable pricing, fast trackable shipping.

Great prices, and much faster delivery than expected. They "over-delivered" on what they said they'd do. Will definitely use them again!

Autoplicity gave me no hassles ever, the price dropped on the product I ordered and I just contacted BuySafe and received the difference quickly. Order was shipped same day. I will buy them over and over again! Thank you Autoplicity.

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