Contact Us Live Chat or 1-888-220-8330
Search Bar
Search by Part Number or Keywords
  • My Garage
  • My Account
  • Cart
  • Body & Mirrors
  • Chassis & Brakes
  • Engine & Drivetrain
  • Electrical & Lighting
Help Center
< Back ×

Denso® Double Platinum Spark Plug 5091

Denso Double Platinum Spark Plug 5091
$5.64
In Stock. Ships in 1-3 Business Days

Vehicle Specific

Check if it fits by entering your vehicle info
Select Your Vehicle
  • Specifications
  • Features
  • Vehicle Fitment
  • Specifications

    BrandDenso
    Part Number5091
    Part DescriptionDouble Platinum Spark Plug
    Electrode MaterialPlatinum
    Gap.039" (1.0 mm)
    Heat Range16
    Hex Size5/8" (16 mm)
    Nominal Gap1 mm
    Overall HeightJIS
    Quantity1 Piece
    Reach19 mm (3/4")
    Seat TypeTapered
    Spark Plug Reach0.748"
    Terminal TypeSolid
    Thread Diameter14 mm
    Thread Pitch1.25 mm
    UPC042511050914
    Warning: California’s Proposition 65
  • Features

    Denso Double Platinum™ Spark Plug are featured as follows:
    • Electrode Made of Titanium-Enhanced Alloy.
    • Minimum quenching electrode design.
    • Enhances flame speed and thereby increases engine efficiency.
    • Made up of the patented alloy iridium, which is six times harder and eight times stronger than platinum, commonly used in spark plugs.
    • Can handle temperatures above 4,000°F.
    • The firing end must be able to dissipate heat into the cylinder head as quickly as possible to avoid pre-ignition.
    • Fine wire made of Iridium forms the central electrode.
    • Platinum ground electrodes.
    • They are designed for extreme temperatures exceeding 4,000° F associated with high-performance ignition and special fuel systems.
    • Iridium is a currently utilized plug metal with the highest resistance to corrosion.
    • Central electrode diameter is 0.4mm for improved ignitability and longer lifespan.
    • Lasts more than three times what traditional spark plugs do.
    • Factory-installed on today's latest high-performance and luxury vehicles.
    It has a 1.1mm platinum center electrode and a titanium-enhanced alloy ground electrode that consumes fuel more efficiently and starts faster for improved fuel economy. The plug has minimum-quench electrode design and enhanced flame propagation to make the engine more efficient. The first automotive plug made using iridium, which is extracted from meteorites, can withstand temperatures higher than 4000°F surpassing any other material around. Besides, the company also uses innovative 360° laser-welding technology in their Denso Double Platinum™ Spark Plug 5091 such that they are able to withstand severe conditions. It is designed for longevity, providing more H.P., quicker easier starting, fewer heavy load misfires and better fuel efficiency.
    DENSO is the world's number one in automotive technology, providing leading vehicle manufacturers with high quality A/C compressors, oxygen sensors and other critical components. These products are designed to meet the most stringent OE requirements and have a never-before-seen performance and durability in the auto parts market. The devotion of DENSO through its creativity and excellence guarantees that their items attain more excellent performance, fuel efficiency and longevity thus being highly preferred by car manufacturers globally.
  • Vehicle Fitment

    Year Make Model Trim Engine
    1986-1988 Buick CenturyAll Trims6 Cyl 3.8L
    1987-1989 Buick CenturyAll Trims6 Cyl 2.8L
    1993 Buick CenturyAll Trims4 Cyl 2.2L
    1986-1987 Buick ElectraAll Trims6 Cyl 3.8L
    1986 Buick LeSabreAll Trims6 Cyl 3.0L
    1988-1989 Buick RegalAll Trims6 Cyl 2.8L
    1989-1993 Buick RegalAll Trims6 Cyl 3.1L
    1986-1987 Buick RivieraAll Trims6 Cyl 3.8L
    1987-1989 Buick SkyhawkAll Trims4 Cyl 2.0L
    1986-1988 Buick SkylarkAll Trims6 Cyl 3.0L
    Show More

Buy with Confidence

  • Dedicated Service
    Experienced professionals are ready to help
  • Unbeatable Prices
    Affordable prices with superior high quality
  • Fast Delivery
    Deliver your orders as quickly as possible