Dinan Iridium Spark Plug - N20/N54/N55/S55/N63/S63 Heat Range 9 (HV) - Single
Dinan Iridium Spark Plug - N20/N54/N55/S55/N63/S63 Heat Range 9 (HV) - Single, image 2
Dinan Iridium Spark Plug - N20/N54/N55/S55/N63/S63 Heat Range 9 (HV) - Single, image 3
Dinan Iridium Spark Plug - N20/N54/N55/S55/N63/S63 Heat Range 9 (HV) - Single, image 4
Dinan Iridium Spark Plug - N20/N54/N55/S55/N63/S63 Heat Range 9 (HV) - Single, image 5
Dinan Iridium Spark Plug - N20/N54/N55/S55/N63/S63 Heat Range 9 (HV) - Single
Dinan Iridium Spark Plug - N20/N54/N55/S55/N63/S63 Heat Range 9 (HV) - Single, image 2
Dinan Iridium Spark Plug - N20/N54/N55/S55/N63/S63 Heat Range 9 (HV) - Single, image 3
Dinan Iridium Spark Plug - N20/N54/N55/S55/N63/S63 Heat Range 9 (HV) - Single, image 4
Dinan Iridium Spark Plug - N20/N54/N55/S55/N63/S63 Heat Range 9 (HV) - Single, image 5

Dinan Iridium Spark Plug - N20/N54/N55/S55/N63/S63 Heat Range 9 (HV) - Single

Dinan SKU: DNND640-0002
Price
21% OFF
In Stock – Ready to Ship
Shipping calculated at checkout.
Make sure this fits your vehicle Select your vehicle to confirm fitment before you order. Check

The Dinan Iridium Spark Plug uses an iridium electrode with a copper core to run cooler, resist preignition, and fire reliably at lower required voltage than a standard plug. Rated at heat range 9, it runs one step colder than OEM on N20, S55, N63 and S63, two steps colder on N55, and three steps colder on N54, making it suitable for tuned and most stock setups and a strong match for Dinan ignition coils. The projected ceramic insulator and optimized electrode design help ignite hard-to-burn fuels such as ethanol. Sold individually.

Specifications

Type Iridium spark plug
Heat Range 9 (equivalent Bosch 3, Brisk 10, Champion 4, Denso 27, NGK 9)
Material Iridium electrode with copper core
Insulator Ceramic, projected design
Seat Type Flat
Terminal Type Nut
Dimensions 12mm thread diameter x 26.5mm reach x 14mm Bi-Hex hex
Supplied Gap 0.5mm
Install Torque 17 Nm
Engines N20 / N54 / N55 / S55 / N63 / S63
Quantity 1 (sold individually)
Part Number D640-0002

Shipping

  • Orders placed before 3 PM ET typically ship the same business day. Larger items ship within 1 to 3 business days.
  • Standard, expedited, and overnight options at checkout.
  • Oversized items ship by freight and take longer.
  • Special order items follow a lead time we confirm with you individually before the order is committed.
  • Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
  • Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
  • International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

  • 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
  • Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
  • Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
  • Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
  • Product images may be representative. The SKU and specifications in the listing are what ships.
  • Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Returns & Refunds · Warranty
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