NGK DPR6EA-9 Spark Plug 4-Pack – Nickel/Copper, 0.036 in Gap, 6 Heat, 12 mm Thread
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Description
xMeet the NGK DPR6EA-9 4-pack spark plugs, designed to deliver dependable ignition on a range of riders who value steady performance across daily rides and weekend getaways. Built to mirror OE concepts with modern materials, these plugs offer a balanced approach to ignition reliability without overpromising results.
Why riders choose NGK for their V-twin and cruiser engines
These plugs combine a nickel/copper center electrode with a solid copper core, supporting efficient heat transfer and consistent operation in varied riding conditions. A high-grade ceramic insulator provides robust dielectric strength, helping maintain stable ignition under demanding temperatures. The triple gasket seal helps reduce gas leakage and preserve compression, contributing to predictable idle and smooth acceleration.
- Pre-gap is set at .036 in (0.9 mm) for consistent performance out of the box.
- Ground electrode configuration features a standard J-gap with one electrode for reliable spark delivery.
- Resistor type helps suppress ignition noise and supports electrical stability in the ignition system.
- Solid copper core and nickel alloy materials are chosen for heat dissipation and durability.
This 4-pack is labeled as a standard replacement option, aligning with many OEM nickel alloy plug applications. It is not a guarantee for every engine, so it’s wise to verify the part number and gap against your owner’s manual or NGK directly before purchasing.
Key specifications at a glance
- Part number: DPR6EA-9; 4 plugs per pack; Stock: 5531
- Thread diameter: 12.0 mm (0.472 in); Hex size: 18 mm
- Reach: 19.0 mm (0.750 in); Ground electrode: 1; Gap: 0.036 in
- Ground electrode tip design: Standard; Resistor type: Yes; Washer: Crush
Compatibility spans several Kawasaki Vulcan 1500 models and Triumph Thunderbird series from the 2010s, among other OE nickel alloy plug applications. Always confirm compatibility with the vehicle manual or NGK to ensure the part matches your engine’s specifications and heat range.
Practical notes for installation and use
When installing, handle with care to avoid damage to the ceramic insulator. Use the correct torque specification and ensure the gasket seals properly to maintain compression and prevent leaks. Real-world riding benefits may include steady idle, reliable cold starts, and consistent power delivery under varied loads.
FAQ
Q: Which motorcycles is this spark plug set designed for?
A: Compatible with Kawasaki VN1500 variants (1999–2008) and Triumph Thunderbird family (2010–2017); always confirm with your manual or NGK.
Q: What are the key features of NGK DPR6EA-9?
A: Nickel/copper center, 0.036 in pre-gap, resistor type, 12 mm thread, 18 mm hex, and ceramic insulator.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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