More Information for DENSO 3491

{Alternate Inventory Numbers: FK20HBR8}

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DENSO 3491

$10.19

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$0.00

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+ Sold in packs of 1x1

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$10.19

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DENSO 3491 Specifications
Center Electrode Core Material	Copper
Center Electrode Tip Material	Iridium
Ground Configuration	Needle-to-Needle
Ground Electrode Core Material	Nickel
Ground Electrode Quantity	3
Ground Electrode Tip Design	Platinum Needle
Hex Size	16 mm
Manufacturer Heat Range	20
Pre-Gap Size	0.8 mm
Reach	26.5 mm
Resistance	5000.0 oh
Seat Type	Flat
Thread Diameter	14.0 mm

Iridium Long Life; Super Ignition Plug (SIP); Pre-Set Gap: 0.032"

Features & Benefits:

LIFESPAN / DURABILITY | Iridium alloy is 6X harder and 8X stronger than Platinum

Iridium with Rhodium Center Electrode -- DENSO uses the highest concentration of Iridium of any spark plug and outperforms in the most severe engine temperatures, resisting oxidation and voltage wear for over 100,000 miles.
Platinum Ground Electrode -- extends the life of the plug by resisting gap erosion.
Patented 360-Degree Laser Welding -- creates the highest quality bond for structural support of the center electrode.

PERFORMANCE / IGNITABILITY

0.7 mm Fine Wire Iridium Center Electrode -- improves ignitability for more horsepower, faster easier starts and fewer misfires under heavy loads.

Which DENSO Spark Plug Is Right For You?

Material / Series	Lifespan / Durability	Performance / Ignitability	Efficiency / Fuel Economy
Copper / Nickel U-Groove	★	★	★
Platinum Twin Tip	★★★★	★★	★★
Double Platinum	★★★★★	★★	★★
Iridium Twin Tip	★★★★★★	★★★★	★★★
Iridium Power	★★★★	★★★★★	★★★
Iridium Long Life	★★★★★★	★★★★	★★

Videos

How To Replace DENSO Spark Plugs

OEM / Interchange Numbers: 9091901263, XP5325

Closeout Inventory Warranty Information:
Wholesaler Closeout items have a 30 day warranty (but still are covered by our Return Policy).

Regular Inventory Warranty Information:
No Warranty