Bosch – 7547 – WSR6F Small Engine Spark Plug

DESCRIPTION

Heavy duty yttrium-enhanced center electrode with copper core provides superior reliability and durability. 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.

PRODUCT SPECIFICATIONS

Shell

Thread Diameter – 14 mm

Thread Pitch – 1.25 mm

Seat Type – Gasket

Reach – 9.5 mm (3/8″)

Hex Size – 3/4″ (19 mm)

Terminal Type – Removable Nut

Gap – .020″ (0.5 mm)

Center Electrode

Material – Nickel

Type – Standard

Size – 2.5 mm

Projection – Projected

Ground Electrode

Material – Nickel

Type – Cut Back

Quantity – 1

Specifications

Resistor – Yes

Resistor Value – 6K Ohm

Heat Range – 6

Torque Specs – Cast Iron: 15-18 lb. ft. Aluminum: 11-14 lb. ft.

Part Information

Brand – Bosch

Longevity – Use Equipment Recommended Replacement Interval

FITS THE FOLLOWING:

Stihl – most FS series chainsaws, BR320, BR340, BR380, BR400, BR420, BG55, BG85, FC75, FC85, HS45, HS75 and HS80

REPLACES THE FOLLOWING:

Autolite 2974

Autolite 2984

Autolite XST2974

Beru 14SR-5F

Beru Z260

Bosch 0242240506

Brisk 3022

Brisk PR15Y

Champion 852

Champion RCJ6Y

Champion RCJ6YT04

Champion stk 852

Denso 6043

Denso W20MP-U

Denso W22MPR-U

Denso W22MPRU

Denso stk 6023

General Motors 5613726

Iskra FSC75CPR

Motorcraft A22NX

Motorcraft stk 107

NGK 4345

NGK 4626

NGK 6726

NGK BPMR6A

NGK BPMR7A

NGK stk 4626

Torch L7RTC