Bosch 7521 WR10FCZ Super Spark Plug

Heavy duty yttrium-enhanced center electrode with copper core provides superior reliability and durability. Tapered cut nickel chromium ground electrode assists in cold weather starts and provides increased ignitability. Nickel-plated rolled threads provide anti-seize and corrosion protection. Metal glass fused resistor gives maximum interference suppression. Angular, 5-rib insulator design prevents flashover.

• Shell
• Thread Diameter14mm
• Thread Pitch1.25mm
• Seat TypeGasket
• Reach9.5mm (3/8")
• Hex Size13/16" (21mm)
• Gap.079" (2.0mm)

• Center Electrode
• MaterialNickel
• ProjectionProjected

• Ground Electrode
• MaterialNickel
• Quantity1

• Specifications
• ResistorYes
• Heat Range10
• Torque SpecsCast Iron: 15-29 lb. ft. Aluminum: 15-22 lb. ft.

• Part Information
• BrandBosch
• WarrantySatisfaction Guarantee
• Longevity30k Miles

Automotive

Sorry, no automotive applications are associated with this part.

Powersports

Sorry, no powersports applications are associated with this part.

Non-Automotive

Sorry, no non-automotive applications are associated with this part.