Harley-Davidson Slim S Spark Plugs
Genuine HD spark plugs and aftermarket alternatives that fit the Slim S — all years. Select your year for exact fitment and pricing.
Genuine Harley-Davidson (2)
Aftermarket for your Slim S
Confirmed to fit your Slim S
Aftermarket spark plugs the supplier lists against the Slim S. Genuine Harley-Davidson is listed above, not here.
V-Twin
SPARK PLUG AIR COOLED RETRO CONVERSION KIT
In stock
£56.90Iron Pass £48.93£51.21View
Samwel Supplies
SPARK PLUG AIR COOLED RETRO CONVERSION KIT
In stock
£61.43Iron Pass £54.06£56.52View
Nology
NOLOGY SILVER SPARK PLUGS
In stock
£91.88Iron Pass £78.10£82.69View
Accel
Accel, U-groove platinum spark plug set. 12mm
In stock
£59.33Iron Pass £52.21£53.99View
NGK
NGK, spark plug Iridium IX DCPR8EIX
In stock
£17.15Iron Pass £14.58£15.44View
NGK
NGK, spark plug Iridium IX DCPR7EIX
In stock
£18.41Iron Pass £15.65£16.57View
NGK
NGK, spark plug Iridium IX DCPR9EIX
In stock
£19.56Iron Pass £16.63£17.60View
NGK
NGK, spark plug DCPR8E
In stock
£8.03Iron Pass £6.83£7.23View
NGK
NGK, spark plug DCPR7E
In stock
£7.22Iron Pass £6.14£6.50View
NGK
NGK, spark plug DCPR9E
In stock
£9.14Iron Pass £7.77£8.23View
OEM
OEM spark plug 6R12
In stock
£7.63Iron Pass £7.25£7.40View
S&S
S&S, 12mm spark plug set
In stock
£19.55Iron Pass £17.60£18.57View