Harley-Davidson Fat Boy Spark Plugs
Genuine HD spark plugs and aftermarket alternatives that fit the Fat Boy — all years. Select your year for exact fitment and pricing.
Genuine Harley-Davidson (1)
Aftermarket for your Fat Boy
Confirmed to fit your Fat Boy
Aftermarket spark plugs the supplier lists against the Fat Boy. Genuine Harley-Davidson is listed above, not here.
V-Twin
SPARK PLUG AIR COOLED RETRO CONVERSION KIT
In stock
Iron Pass £48.95£57.59View
Sumax
SUMAX PRO WIRE SPARK PLUG WIRE KITS
In stock
Iron Pass £69.19£81.40View
Samwel Supplies
SPARK PLUG AIR COOLED RETRO CONVERSION KIT
In stock
Iron Pass £54.15£63.70View
Nology
NOLOGY SILVER SPARK PLUGS
In stock
Iron Pass £79.04£92.99View
Nology
NOLOGY SPARK PLUG WIRE SETS
In stock
Iron Pass £156.83£184.50View
Nology
NOLOGY SPARK PLUG WIRE SETS
In stock
Iron Pass £156.83£184.50View
Zodiac (Genuine Zodiac Products)
SPARK PLUG & HEAD BOLT COVERS
In stock
Iron Pass £50.68£59.62View
OEM
OEM spark plug SE performance
In stock
Iron Pass £29.98£35.27View
OEM
OEM spark plug 6R10
In stock
Iron Pass £6.32£7.44View
CV Performance
CVP, ThunderCore Pro spark plug wire set. Black
In stock
Iron Pass £57.41£67.54View
NGK
NGK, spark plug Iridium IX CR9EIX
In stock
Iron Pass £13.11£15.42View
NGK
NGK, spark plug CR9EB
In stock
Iron Pass £7.87£9.26View