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DENSO 4091 U-Groove Spark Plug

(Pontiac Firebird 1977-81; Mercedes-Benz C300 2012-14, C250 2012-14, C350 2012-14; Ford Escort 1982-90; Audi RS5 2013-15; Hyundai XG350 2002-05 + 16 more models)

Part of: DENSO U-Groove Spark Plug

Other options in this family: DENSO 3381 DENSO 12-12-9-065-004 DENSO 4085 DENSO 3120 DENSO 3051

Manufacturer

Picture for manufacturer DENSO

Part Number

4091
7 reviews
Sale Price

$4.39

In Stock (10+)

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The DENSO 4091 is a standard spark plug featuring innovative U-Groove ground electrode technology designed to enhance ignition performance and engine efficiency. This plug delivers reliable ignition across a wide range of operating conditions.

Key Features:

  • U-Groove ground electrode design improves ignitability and flame kernel development
  • Enhanced combustion efficiency for better fuel economy and reduced emissions
  • Standard copper core construction for excellent heat dissipation
  • Proven DENSO quality and reliability for passenger vehicles
  • Designed to meet or exceed OEM specifications

DENSO's U-Groove technology creates a larger surface area for the spark, promoting more complete combustion and smoother engine operation. This spark plug is engineered to deliver consistent performance and long service life in demanding automotive applications.

Products specifications

Fits

Pontiac Firebird 1977-81; Mercedes-Benz C300 2012-14, C250 2012-14, C350 2012-14; Ford Escort 1982-90; Audi RS5 2013-15; Hyundai XG350 2002-05, XG300 2001; Acura Vigor 1992-94; Yamaha XT250 2008-10, YFM250 Bear Tracker 1999-2003 + 12 more models

Pre-Gap Size

0.7

Ground Electrode Core Material

Nickel

Seat Type

FLAT

Center Electrode Tip Material

Nickel

Ground Electrode Quantity

1

Ground Configuration

Standard

Thread Diameter

12.00

Center Electrode Core Material

Copper

Resistance

5000

Ground Electrode Tip Design

U-Groove

Hex Size

18.0

Manufacturer Heat Range

22

Reach

19.00

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