NGK 7223 Spark Plug
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NGK

NGK 7223 Spark Plug

Brand NGK 7223
Resistance 5000
Ground Electrode Tip Design Standard
Ground Configuration Standard
Ground Electrode Core Material Nickel
Electrical Terminal Type Stud
Center Electrode Core Material Copper
Center Electrode Tip Material Nickel
Pre-Gap Size .028
Ground Electrode Quantity 1
Hex Size 5/8
Insulator Height 50.50
Manufacturer Heat Range 7
Seat Type Flat
Reach .5
Thread Diameter 10.00
Part Number Cr7hs
Stock Number 7223
Fits —

Standard spark plug. Copper core and nickel electrodes for reliable ignition performance.

OE supplier heritage. Built by NGK, a long-time original equipment manufacturer.

Standard design. Flat seat with a 5,000-ohm resistor for consistent operation.

Cross-references AMS Automotive 4203, Carlson 7223 and 90793-20071 for the same application. See all 8.

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NGK CR7HS Standard Spark Plug

NGK CR7HS 7223 is a standard spark plug built for dependable ignition performance in a wide range of small-engine and powersports applications. It uses a copper center electrode core, nickel center and ground electrode tips, and a 5,000 ohm resistor to support stable spark delivery and reduced electrical noise.

As part of NGK’s Standard Spark Plug line, this plug reflects the brand’s OE-focused approach to ignition components. NGK has long supplied spark plugs for domestic and import vehicles, and the CR7HS follows that same original-equipment style construction for consistent operation and durability.

  • Part number: CR7HS / 7223
  • Resistance: 5,000 ohms
  • Center electrode core material: copper
  • Center electrode tip material: nickel
  • Ground electrode core material: nickel
  • Ground electrode tip design: standard
  • Pre-gap size: .028
  • Thread diameter: 10.00 mm
  • Reach: .5
  • Seat type: flat
  • Hex size: 5/8
  • Electrical terminal type: stud

This NGK spark plug is a direct replacement-style ignition component for engines that specify the CR7HS heat range and dimensions. It is commonly searched as an NGK CR7HS spark plug, NGK 7223 spark plug, and CR7HS replacement spark plug for applications that require a 10 mm thread, .5 reach, and .028 pre-gap. This part cross-references Carlson 7223 for the same application.

Common Issues This Spark Plug Can Address

  • Hard starting caused by worn or fouled spark plugs
  • Rough idle from weak or inconsistent ignition output
  • Misfire symptoms tied to degraded plug electrodes
  • Reduced throttle response from poor spark delivery
  • Ignition noise concerns where a resistor plug is specified

Installation Notes and Tips

Verify the engine calls for NGK CR7HS / 7223 before installation. Confirm thread diameter, reach, seat type, and pre-gap against the service specification, and inspect the plug wire or coil terminal for a secure stud-style connection. Use the manufacturer’s specified torque and check the gap during service if the application requires adjustment.

Quality Assurance

NGK is a major OE spark plug supplier with extensive North American manufacturing and distribution support. The CR7HS is built to NGK’s original-equipment standards for durability and consistent ignition performance.

Related reading

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 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AMS Automotive — 4203Carlson — 722390793-2007192070-112294701-0025098056-57716P-Z9HCUR3AS