Replacement NGK Spark Plugs for 1999+ Harley Davidsons


Description

NGK 3932 spark plugs are a great choice for your Harley Twin Cam or Sportster and are the OE-replacement for the stock 6R12 factory plug. 

  • Engineered to exceed OE designs
  • Maximum durability and dependable performance
  • Fits Twin Cam, all models & Sportster all models 1986/Later. Replaces HD 6R12, Harley 32317-86A

Features & Benefits

Ask for NGK Standard spark plugs, OE approved and recommended for reliable performance for most automotive and non-automotive applications. NGK Standard spark plugs feature a 5-Rib insulator design to prevent flashover and are also treated with corrosion-resistant plating to ensure ease of installation and removal.

  • Cold rolled threads – prevents damage to cylinder head
  • Triple gasket sealing process – virtually eliminates gas leakage past the shell
  • Solid Copper Core - provides superior heat dissipation, conductivity and a broader heat range
  • Trivalent Plating – three step plating process utilizing silver chromate and zinc ensures maximum corrosion resistance
Product Details
Part Number:3932
Weight:0.10lbs
Center Electrode Core Material:Copper
Center Electrode Design:Standard / Regular
Center Electrode Tip Material:Nickel
Drive Size:5/8 in
Gap - Factory Preset:0.8 mm = 0.032 in
Ground Electrode Configuration:Single
Ground Electrode Tip Material:Nickel Alloy
Insulator Material:Ceramic
Insulator Type:Projected
Manufacturer Heat Range Number:7
Reach (in):0.75
Resistor:Yes
Seat Style:Gasket
Short Style:No
Thread Size:12 mm
Shipping Information:Free

Spark plugs sold in pairs (2).

Fitment:

Twin Cam 88 1999-present
XL Sportster 883/1200 1986-present