NGK
Standard Spark Plug

NGK 6422 Spark Plug

Brand NGK 6422
Center Electrode Core Material Copper
Center Electrode Tip Material Nickel
Electrical Terminal Type Removable Nut
Ground Configuration Standard
Ground Electrode Core Material Nickel
Ground Electrode Quantity 1
Ground Electrode Tip Design Standard
Hex Size 13/16
Insulator Height 55.00
Manufacturer Heat Range 7
Part Number BPR7HS
Pre-Gap Size .028
Reach .5
Resistance 5000
Seat Type Flat
Stock Number 6422
Thread Diameter 14.00
Product line Standard Spark Plug
Fits Yamaha, E-TON, Vento, Bombardier, Kawasaki, Polaris, Suzuki, TGB, Arctic Cat, Kasea, Aprilia, Ducati, Volvo, and Porsche

OE supplier heritage. Built to original equipment standards for dependable performance.

Copper core. Helps promote consistent ignition and durability.

Standard spark plug. A direct-fit ignition component for routine replacement.

Cross-references AP Exhaust 7531, BENDIX PREMIUM BRAKE SHOES 814 and Carlson 7931 for the same application. See all 28.

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NGK BPR7HS Standard Spark Plug

The NGK BPR7HS standard spark plug is built for dependable ignition performance in a wide range of small-engine and powersports applications. As part of NGK’s Standard Spark Plug line, it uses a copper core center electrode, nickel tip materials, and a 5,000-ohm resistor to support stable spark delivery and reduced electrical noise.

Key Features

  • NGK Standard Spark Plug, part number 6422
  • Part number BPR7HS for easy cross-reference
  • Copper core center electrode with nickel tip material
  • Nickel ground electrode with standard tip design
  • 5,000-ohm resistance for ignition system noise suppression
  • Pre-gapped at .028 for common service applications
  • 14 mm thread diameter, .5 reach, flat seat
  • 13/16 hex size with removable nut terminal

Product Details

NGK has long supplied original equipment spark plugs for domestic and import vehicles in North America, and this Standard Spark Plug line reflects that OE-focused manufacturing approach. The BPR7HS / 6422 uses a standard ground configuration, a single ground electrode, and a heat range of 7 to support consistent combustion characteristics in the applications it was built for. This spark plug is a practical choice for owners and technicians servicing engines that call for NGK BPR7HS specifications, including select Honda Civic and other vehicle or small-engine applications that use this plug type.

This part cross-references Champion Spark Plug 932-1 and DENSO Auto Parts 4022 for the same application.

What It Helps Address

  • Hard starting caused by worn or fouled spark plugs
  • Rough idle from weak or inconsistent spark output
  • Misfire conditions related to degraded plug electrodes
  • Ignition noise concerns in electrically sensitive systems
  • Reduced combustion efficiency from incorrect plug heat range or gap

Installation Notes and Tips

Verify the engine calls for NGK BPR7HS specifications before installation. Check thread diameter, reach, seat type, and heat range against the original plug, and confirm the pre-gap matches the engine requirement. For best results, inspect the ignition wire or coil connection, thread the plug by hand first, and tighten to the manufacturer’s torque specification.

Quality Assurance

NGK is a major OE spark plug supplier with more than 80 years of automotive manufacturing experience. The brand’s North American and global production and distribution network supports consistent product availability and OE-level manufacturing standards for ignition service.

This part fits 0 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
Directly replaces or cross-references 28 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AP Exhaust — 7531BENDIX PREMIUM BRAKE SHOES — 814Carlson — 7931Champion Spark Plug — 932-1Champion Spark Plug — 932MDENSO Auto Parts — 4022NGK — 64220K209201112BEN000088283814C814S932S09482-0025594701-0022794703-0022798076-57717AP2BEN000088E3.32E7RTCE7TCQL82YCQL82YC SRL82YCRL82YCCW22FPRW22FPR-UWR5BC