1999 Oldsmobile Alero Spark Plugs

BOSCH PREMIUM CLASS PLATINUM+4 SPARK PLUG

Bosch Premium Class Platinum+4 Spark Plug contains the most platinum in the Bosch Platinum Plug Series and has a unique firing technology that combines the advantages of surface air gap technology and 4 yttrium enhanced ground electrodes.

Specifications:

• 14 mm thread size
• 17.55 mm reach
• 16 mm hex size
• Platinum plug
• Tapered seat style
• Interference suppression resistor
• Surface air gap plug
• Heat fused platinum center electrode
• 4 ground electrodes
• Heat range 9

• Reduces the voltage necessary to jump the gap as well as quenching
• Provides multiple radial spark paths and surface air gap design that creates optimal exposure of the air/fuel mixture to the enhanced ignition spark
• Yttrium-enhancement of the ground electrodes further extend plug life
• Designed to reach self cleaning temperature faster for quicker starts, smoother acceleration, and increased fuel efficiency

Series: Bosch Platinum+4

Product Fit: OE Replacement

Quantity Sold: Sold Individually

Electrode Core Material: Platinum

Plug Type: Resistor

Anticipated Ship Out Time: 1-2 Business Days

Electrode Tip Material: Platinum

NGK TR55IX IRIDIUM IX SPARK PLUG, SOLD INDIVIDUALLY

NGK Iridium IX Spark Plug improves throttle response and superior anti fouling that deliver an outstanding acceleration, high fuel efficiency and durability with its ultimate design, technology and performance.

Specifications:

• 14 mm thread size
• 17.55 mm reach
• 16 mm hex size
• 0.06 in. gap size
• Tapered seat style
• Resistor plug type
• Removable terminal nut
• Projected tip
• Fine wire 0.6 mm iridium center electrode
• Tapered cut ground electrode

• Iridium alloy has extremely high melting point making it perfect for today's high-tech and high performance engines
• Fine Iridium tip that ensures high durability and a consistently stable spark
• Trivalent metal plating offers superior anti-corrosion and anti-seizing properties

Series: NGK Iridium IX

Product Fit: OE Replacement

Quantity Sold: Sold Individually

Electrode Core Material: Copper

Plug Type: Resistor

Anticipated Ship Out Time: 1-2 Business Days

Electrode Tip Material: Iridium

E3 DIAMONDFIRE SPARK PLUG, SOLD INDIVIDUALLY -- 14 mm thread size, 17.55 mm reach, 0.62 in. hex size, tapered seat, resistor, 1.016 mm non-adjustable gap size, copper core electrode material, nickel alloy electrode tip material, projected insulator type; Guaranteed to provide more power while using less fuel, quicker starts and less fouling than competitive standard spark plugs.

Series: E3 DiamondFire

Product Fit: Direct Fit

Quantity Sold: Sold Individually

Electrode Core Material: Copper

Plug Type: Resistor

Product Class: Fuel Saver

Anticipated Ship Out Time: 1-2 Business Days

DENSO PREMIUM CLASS IRIDIUM SPARK PLUG

Denso's Premium Class Iridium Spark Plugs is fast becoming the standard for today's high-tech engines. Employing a revolutionary 360 degrees laser welding process, Denso has created a spark plug unlike anything on the market today. Designed for durability under the most extreme conditions. Denso's patented Iridium alloy is 6 times harder and 8 times stronger than conventional platinum and can handle temperatures in excess of 4,000 degrees Fahrenheit.

Specification:

• 14 mm thread size
• 18 mm reach
• 0.63 in. hex size
• 0.04 in. gap size
• Tapered seat style
• Resistor plug type
• 0.4 mm iridium center electrode
• Tapered cut U-groove ground electrode
• Removable terminal
• Heat range 16

• Designed with heavy duty insulator that provides unparalleled dielectric strength and thermal conductivity under extreme temperatures
• Five-rib design prevents flashover while decreasing voltage loss
• Copper glass seal bonds the center electrode and insulator together for a gas-tight seal
• Platinum center electrode utilizes platinum to shrink the surface area of the center electrode tip for maximum firing performance and minimum voltage requirements
• Platinum ground electrode resists gas and electrical erosion and corrosion extending service intervals to 60,000 miles

Series: Denso Iridium Power

Product Fit: OE Replacement

Quantity Sold: Sold Individually

Electrode Core Material: Iridium

Plug Type: Resistor

Anticipated Ship Out Time: 2-3 Business Days

Electrode Tip Material: Platinum

DENSO REGULAR CLASS TRADITIONAL SPARK PLUG

Denso's Regular Class Traditional Spark Plugs guarantee the quality of the product they produce because every component that leaves their factories has been designed with precision, manufactured to the strictest OE standards and subjected to rigorous safety and performance tests.

Specification:

• 14 mm thread size
• 18 mm reach
• 0.63 in. hex size
• 0.06 in. gap size
• Tapered seat style
• Resistor plug type
• U-groove ground electrodes
• Removable terminal
• Projected tip
• Heat range 16

• Designed with heavy duty insulator that provides unparalleled dielectric strength and thermal conductivity under extreme temperatures
• Five-rib design prevents flashover while decreasing voltage loss
• Copper glass seal bonds the center electrode and insulator together for a gas-tight seal
• Platinum center electrode utilizes platinum to shrink the surface area of the center electrode tip for maximum firing performance and minimum voltage requirements
• Platinum ground electrode resists gas and electrical erosion and corrosion extending service intervals to 60,000 miles

Series: Denso Standard

Product Fit: OE Replacement

Quantity Sold: Sold Individually

Electrode Core Material: Copper

Plug Type: Resistor

Anticipated Ship Out Time: Same Day Or Next Business Day

Electrode Tip Material: Nickel Alloy

DENSO REGULAR CLASS TRADITIONAL SPARK PLUG

Denso's Regular Class Traditional Spark Plugs guarantee the quality of the product they produce because every component that leaves their factories has been designed with precision, manufactured to the strictest OE standards and subjected to rigorous safety and performance tests.

Specification:

• 14 mm thread size
• 18 mm reach
• 0.63 in. hex size
• 0.06 in. gap size
• Tapered seat style
• Resistor plug type
• U-groove ground electrodes
• Removable terminal
• Projected tip
• Heat range 16

• Designed with heavy duty insulator that provides unparalleled dielectric strength and thermal conductivity under extreme temperatures
• Copper glass seal bonds the center electrode and insulator together for a gas-tight seal
• Platinum center electrode utilizes platinum to shrink the surface area of the center electrode tip for maximum firing performance and minimum voltage requirements
• Platinum ground electrode resists gas and electrical erosion and corrosion extending service intervals to 60,000 miles

Series: Denso Standard

Product Fit: OE Replacement

Quantity Sold: Sold Individually

Electrode Core Material: Copper

Plug Type: Resistor

Anticipated Ship Out Time: 1-2 Business Days

Gap Size: 0.06 In.

DENSO PREMIUM CLASS DOUBLE PLATINUM SPARK PLUG, SOLD INDIVIDUALLY -- 14 mm thread, 18 mm reach, 0.62 in. hex size, tapered seat, resistor type, solid terminal, platinum-tipped ground electrode and platinum-tipped center electrode, extra projected tip, 0.050 in. gap, heat range 16; Designed with heavy duty insulator that provides unparalleled dielectric strength and thermal conductivity under extreme temperatures; Five-rib design prevents flashover while decreasing voltage loss; Copper glass seal bonds the center electrode and insulator together for a gas-tight seal; Platinum center electrode utilizes platinum to shrink the surface area of the center electrode tip for maximum firing performance and minimum voltage requirements; Platinum ground electrode resists gas and electrical erosion and corrosion extending service intervals to 60,000 miles.

Series: Denso Double Platinum

Product Fit: OE Replacement

Quantity Sold: Sold Individually

Electrode Core Material: Platinum

Plug Type: Resistor

Anticipated Ship Out Time: Same Day Or Next Business Day

Electrode Tip Material: Platinum

E3 DIAMONDFIRE SPARK PLUG, SOLD INDIVIDUALLY -- 14 mm thread size, 17.52 mm reach, 0.62 in. hex size, tapered seat, resistor, 1.5 mm non-adjustable gap size, copper core electrode material, nickel alloy electrode tip material, projected insulator type; Guaranteed to provide more power while using less fuel, quicker starts and less fouling than competitive standard spark plugs.

Series: E3 DiamondFire

Product Fit: Direct Fit

Quantity Sold: Sold Individually

Electrode Core Material: Copper

Plug Type: Resistor

Product Class: Fuel Saver

Anticipated Ship Out Time: 1-2 Business Days

CHAMPION IRIDIUM SPARK PLUG, SOLD INDIVIDUALLY -- 14 mm thread diameter, 18 mm reach, 16 mm hex size, resistor type, tapered seat, 1.5 mm gap, projected tip; Features a superior 0.7 mm fine-wire center electrode for maximum life and spark performance, Iridium center electrode with platinum tipped V-trimmed ground electrode and an exclusive heat-active alloy that maintains stable operating temperature under all engine loads.

Series: Champion Iridium

Product Fit: OE Replacement

Quantity Sold: Sold Individually

Electrode Core Material: Nickel Alloy

Plug Type: Resistor

Anticipated Ship Out Time: 1-2 Business Days

Electrode Tip Material: Iridium

DENSO PREMIUM CLASS PLATINUM TWIN TIP SPARK PLUG

Denso's Premium Class Platinum Twin Tip Spark Plugs revolutionary twin tip design provides better ignitability for a more powerful and fuel-efficient combustion yielding better engine performance in terms of power and fuel economy.

Specification:

• 14 mm thread size
• 18 mm reach
• 0.63 in. hex size
• 0.04 in. gap size
• Tapered seat style
• Resistor plug type
• Platinum alloy 1.1 mm fine wire center electrode
• Titanium enhanced 1.5 mm fine wire ground electrode
• Solid terminal nut
• Heat range 16

• Greatly improves mileage
• Provides more power and faster starts
• Reduce carbon emissions

Series: Denso Platinum TT

Product Fit: OE Replacement

Quantity Sold: Sold Individually

Electrode Core Material: Platinum

Plug Type: Resistor

Anticipated Ship Out Time: Same Day Or Next Business Day

Electrode Tip Material: Platinum