• Drag Specialties Performance Spark Plug Set | 2103-0207
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Drag Specialties 2103-0207 Performance Spark Plugs – R5670-5, Heat Range 5, 1948–1974 Big Twin, Pair

Drag Specialties 2103-0207 Performance Spark Plugs – R5670-5, Heat Range 5, 1948–1974 Big Twin, Pair

Price $430 TWD
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Product identifiers
Channel part number
2103-0207
Brand part number
2103-0207 / E18-6664SDS
Vendor / brand
Product type
Coils, Spark Plugs and Plug Wires
OEM reference
NOT_APPLICABLE — aftermarket performance spark plug; no OEM interchange asserted
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Product information

Overview

Product overview

Drag Specialties 2103-0207 Performance Spark Plugs are the exact resistor-type pair for documented 1948–1974 Harley-Davidson Big Twin applications. The exact product bridge is Drag 2103-0207 to manufacturer code E18-6664SDS and R5670-5 style.

Construction and specifications

  • Thread: 14 mm diameter, 5/16 in. reach
  • Hex: 13/16 in.
  • Type: Resistor, projecting insulator, removable terminal nut
  • Heat range: 5
  • Insulator: 95% pure alumina, multi-rib design
  • Housing: Nickel-plated to resist oxidation and corrosion
  • Electrode: Copper core with nickel-alloy tip
  • Appearance: Black ceramic body with red logo/script
  • Package: Pair

Fitment

For exact documented Harley-Davidson Big Twin applications from 1948–1974, including FL/FLH, Hydra Glide, Duo Glide, Electra Glide and 1971–1974 FX/FXE where listed. Confirm the original plug specification before installation.

Fitment

依已核實的產品適配資料：Harley-Davidson 1948–1974；代表車型 1200 Electra Glide FLH、Duo Glide FL、EL、Electra Glide FL、FL、FLH Duo-Glide、FLH Electra Glide、FX Super Glide、FXE Super Glide、Hydra Glide EL、Hydra Glide FL。訂購前仍請核對原車年份、車型與零件規格。

Specifications

Brand / channel: Drag Specialties 2103-0207；manufacturer code
E18-6664SDS；style：R5670-5；thread：14 mm diameter x 5/16 in. reach；hex：13/16 in.；type：resistor, projecting insulator, removable terminal nut；heat range：5；insulator：95% pure alumina, multi-rib；housing：nickel-plated；electrode：copper core with nickel-alloy tip；package：pair。
Color
Black ceramic body with red logo/script
Finish
Nickel-plated housing
Material
Multi-material: 95% alumina insulator; copper-core nickel-alloy electrode; metal housing

Shipping & support

Shipping

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FAQ

Before ordering, compare the SKU, OEM number, brand part number, model year, fitment notes, and product images.

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Fitment help

If fitment is uncertain, send the SKU or OEM number together with the motorcycle year and model before checkout.

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