NGK 5329 DPR9EA-9 Standard Nickel Spark Plug, Resistor, 12mm Thread

The NGK 5329 (DPR9EA-9) Standard Spark Plug is a resistor-type, nickel/copper replacement spark plug made to OE-equivalent quality. NGK is a major original-equipment spark plug supplier. This plug has a 12 mm thread, a 19 mm reach and a heat range of 9, and is commonly used in motorcycle, ATV and small-engine applications.

Key Features:

• Solid copper core: Improves heat dissipation and conductivity, and gives a wide heat range.
• Nickel alloy center electrode: Gives consistent ignition performance. It suits engines that use OE nickel-alloy plugs and is not intended for engines with factory precious-metal plugs.
• Ceramic insulator: NGK's high-grade alumina silicate ceramic gives strong dielectric performance and better heat transfer.
• Ribbed insulator: Helps prevent spark flashover.
• Triple gasket seal: Helps prevent gas leakage past the shell.
• Cold-rolled threads: Help prevent cross-threading and damage to the cylinder head.
• Trivalent metal plating: Resists corrosion and seizing, which makes installation and removal easier.
• Resistor design: Suppresses radio frequency interference.

Specifications:

• NGK part number: DPR9EA-9 (stock number 5329)
• Thread size: M12 x 1.25 (0.472 in diameter)
• Reach: 0.750 in (19.0 mm)
• Hex size: 18 mm
• Heat range: 9
• Pre-set gap: 0.036 in (0.9 mm)
• Seat type: Flat, with crush washer
• Terminal: Stud
• Ground electrode: J-gap, nickel
• Center electrode: Copper core with nickel tip
• Insulator height: 1.97 in (50 mm)
• Resistance: 5,000 ohms

Cross-references: Autolite 4162, Champion 905 / 8809 / 8809-1 / RAX92YC, DENSO 4111 / X27EPR-U9, Suzuki 09482-00330, Yamaha 90793-20080, Honda 98069-59916, Kawasaki 92070-1068.

NGK has more than 80 years of experience making spark plugs for automotive, motorcycle, marine and small-engine use. The 5329 gives dependable starting and smooth running as a standard replacement plug.