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DENSO 3422 Iridium Long Life Spark Plug - SKJ16DR-M11

(Honda Pilot 2005-08, Odyssey 2005-10, Ridgeline 2006-08, Clarity 2017-21; Acura MDX 2003-06; Audi S5 2008-10; Saturn Vue 2004-07 + 5 more models)

Part of: DENSO Iridium Long Life Spark Plug

Other options in this family: DENSO 3534 DENSO FK16HQR11#4 DENSO SK20R-P11 DENSO 3494 DENSO 3518

Manufacturer

Picture for manufacturer DENSO

Part Number

3422
7 reviews
Sale Price

$11.16

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The DENSO 3422 (SKJ16DR-M11) Iridium Long Life Spark Plug delivers exceptional performance and durability for demanding ignition systems. This premium spark plug features a 0.7mm iridium-tipped center electrode secured with DENSO's patented 360-degree laser welding process, combined with a platinum-tipped ground electrode for superior wear resistance.

Key Features:

  • 90% iridium-rhodium alloy center electrode for maximum durability
  • Iridium alloy is six times harder and eight times stronger than conventional platinum
  • Pre-gapped to 0.044 inches for reliable ignition
  • Sustained performance for over 100,000 miles—up to three times longer than conventional plugs
  • Endures temperatures exceeding 4,000 degrees Fahrenheit
  • 14mm thread size with 19.00mm reach and gasket seat
  • 5000 ohms resistance with resistor design
  • Machine-rolled threads prevent seizing or cross-threading

Manufactured to the strictest OE performance, durability, and emissions standards, the DENSO 3422 spark plug provides reliable ignition, optimized fuel economy, and reduced emissions. This iridium long-life spark plug enhances engine efficiency and extends ignition system lifespan, making it an ideal choice for high-performance applications including turbocharged, supercharged, and nitrous systems.

OEM Cross-References: Replaces GM 12582002, Honda 9807B-551-5W, Honda 9807B-551-7W, and NGK 3657.

Products specifications

Fits

Honda Pilot 2005-08, Odyssey 2005-10, Ridgeline 2006-08, Clarity 2017-21; Acura MDX 2003-06; Audi S5 2008-10; Saturn Vue 2004-07; Oldsmobile Cutlass Supreme 1978-87; Bentley Continental 2007-11; Ferrari 328 GTS 1986-89 + 2 more models

Pre-Gap Size

1.1

Ground Electrode Core Material

Nickel

Seat Type

FLAT

Ground Electrode Quantity

1

Manufacturer Heat Range

16

Center Electrode Tip Material

Iridium

Center Electrode Core Material

Copper

Thread Diameter

14.00

Resistance

5000

Ground Configuration

Thick Electrode

Ground Electrode Tip Design

Platinum Chip

Reach

19.00

Hex Size

16.0

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