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Dinan Iridium Spark Plug - B48/B58/S58 Heat Range 9 (Flat) - Single

Dinan SKU: DNND640-0001
Price
20% OFF
In Stock – Ready to Ship
Shipping calculated at checkout.
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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 and one step colder than OEM on Gen 1 B48, Gen 1/2 B58 and S58 engines, it suits tuned and stock setups alike and pairs well with 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 Cup
Dimensions 12mm thread diameter x 26.5mm reach x 14mm Bi-Hex hex
Supplied Gap 0.5mm
Install Torque 17 Nm
Engines B48 / B58 / S58 (1 step colder than OEM)
Quantity 1 (sold individually)
Part Number D640-0001

Shipping

  • Orders placed before 3 PM ET typically ship the same business day. Some items ship within 1 to 3 business days.
  • Standard, expedited, and overnight options at checkout.
  • Oversized items ship by freight and take longer.
  • 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.
  • 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-day returns on new, uninstalled items in original packaging with all hardware.
  • Standard returns: 8% restocking fee, buyer pays return shipping, and original shipping is not refunded. All waived if the item is defective or we made the error.
  • Installed or used parts cannot be returned. Confirm fitment before you install.
  • Product images may be representative. The part number and specifications in the listing are what ships.
  • Special orders and custom items are final sale.
  • Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy
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