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SP509 spark plug

Spark plug SP509 - Properties, Compatibility and Alternatives

The SP509 spark plug represents a reliable ignition component designed for optimal engine performance in various automotive applications. This SP509 spark plug delivers consistent spark generation to ensure proper fuel combustion within the engine cylinder. Modern vehicles require precise ignition timing, making quality spark plugs essential for maintaining engine efficiency and reducing emissions.

Advantages of the Spark plug SP509

  • Enhanced ignition reliability ensures consistent engine startup and smooth operation across various operating conditions
  • Optimized electrode design provides improved Spark plug SP509 performance with reduced misfiring incidents
  • Durable construction materials resist electrode wear and extend service intervals for cost-effective maintenance
  • Superior heat dissipation properties prevent overheating and maintain optimal SP509 spark plug temperature range
  • Precise manufacturing tolerances ensure proper fitment and reliable electrical connection in the ignition system
  • Corrosion-resistant materials withstand harsh engine environments and maintain performance over extended periods

Technical Data

Feature Value
Manufacturer Champion
Model SP509
Type Copper core resistor
Thread size 14mm
Thread length 19mm (3/4 inch)
Wrench size 5/8 inch (16mm)
Heat range 9
Electrode gap 0.035 inch (0.9mm)
Resistance 5000 ohms
Application Small engines, marine applications

Compatibility and Areas of Application

The SP509 spark plug finds primary application in small displacement engines, particularly those found in recreational vehicles and marine equipment. This Spark plug SP509 works effectively in air-cooled engines where consistent ignition performance is crucial for reliable operation. The component suits various engine configurations including single-cylinder and multi-cylinder designs commonly used in outdoor power equipment.

  • Small displacement motorcycle engines
  • Marine outboard motors
  • Recreational vehicle applications
  • Industrial small engine equipment

Suitable for the following vehicle models and equivalents

It is important to mention that alternative products can be found on AUTODOC. Currently, there are over 7000 items available in the spark plugs category.

Car maker Car Model
Honda CB125, CG125
Yamaha YBR125, SR125
Suzuki GN125, EN125
Kawasaki KLX125, KE125

Application Notes and Important Questions

  • What maintenance interval should be followed? Regular inspection every 10,000 miles ensures optimal Spark plug SP509 performance and prevents ignition-related issues
  • How does electrode gap affect performance? Proper gap specification maintains correct SP509 spark plug operation and prevents engine misfiring or hard starting conditions
  • Can this plug handle high-performance applications? The copper core design provides adequate heat dissipation for standard operating conditions but may require more frequent replacement in demanding applications
  • What are the signs of plug failure? Rough idling, difficult starting, and reduced fuel economy typically indicate spark plug replacement requirements

Conclusion

The SP509 spark plug delivers dependable ignition performance for small engine applications requiring consistent spark generation. This component offers reliable operation across various operating conditions while maintaining cost-effective maintenance intervals. The SP509 spark plug provides an excellent balance of performance and durability for recreational and industrial small engine applications.

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500 items
  • Electrode Gap [mm]: 0,9
  • Spanner Size: 16 mm
  • Thread Length [mm]: 19
  • Spark Position [mm]: 3
  • Thread Size: M 14 x 1,25
  • Tightening Torque [Nm]: 28
  • Number of pins: 1
  • Item number: 0 242 235 666
  • Manufacturer: BOSCH
  • EAN number: 3165143134344
  • Condition: New
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  • Spark Plug: Nickel Middle Electrode, Fixed SAE connector, 1 - Earthed Electrode
  • Electrode Gap [mm]: 0,9
  • Spanner Size: 16 mm
  • Thread Length [mm]: 19
  • Spark Position [mm]: 3
  • Thread Size: M 14 x 1,25
  • Tightening Torque [Nm]: 28
  • Number of pins: 1
  • Item number: 686S0002
  • Manufacturer: RIDEX
  • EAN number: 4059191451333
  • Condition: New
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  • Spark Plug: Ring type connector (cup-shaped), Platinum Middle Electrode, 1 - Earthed Electrode, Interference Suppression 1 kOhm, with gasket seat
  • Spanner Size: 16 mm
  • Thread Length [mm]: 26,5
  • Spark Position [mm]: 3,5
  • Thread Size: M14 x 1,25
  • Item number: 94833
  • Manufacturer: NGK
  • EAN number: 0087295948330
  • Condition: New
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  • Spark Plug: Ring type connector (cup-shaped), Platinum Middle Electrode, 1 - Earthed Electrode, Interference Suppression 1 kOhm, with gasket seat
  • Spanner Size: 16 mm
  • Thread Length [mm]: 19,0
  • Spark Position [mm]: 5,0
  • Thread Size: M12 x 1,25
  • Item number: 93231
  • Manufacturer: NGK
  • EAN number: 87295932315
  • Condition: New
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  • Spark Plug: Iridium Middle Electrode, 1 - Earthed Electrode, Interference Suppression 5 kOhm, with gasket seat
  • Spanner Size: 14 mm
  • Thread Length [mm]: 26,5
  • Spark Position [mm]: 4,7
  • Thread Size: M12 x 1,25
  • Version: Bi-Hex
  • Item number: 94201
  • Manufacturer: NGK
  • EAN number: 087295942017
  • Condition: New
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  • Product line: Iridium TT
  • Spark Plug: 1 - Earthed Electrode, Iridium Middle Electrode
  • Spanner Size: 16 mm
  • Thread Size 1: 19
  • Tightening Torque [Nm]: 22
  • Diameter: 14
  • Weight [g]: 43
  • Item number: 686S0034
  • Manufacturer: RIDEX
  • EAN number: 4059191685523
  • Condition: New
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  • Electrode Gap [mm]: 1
  • Spanner Size: 16 mm
  • Supplementary Info: Premium 4
  • Thread Length [mm]: 19
  • Spark Position [mm]: 5
  • Thread Size: M 14 x 1,25
  • Tightening Torque [Nm]: 28
  • Number of pins: 4
  • Item number: 0 242 232 802
  • Manufacturer: BOSCH
  • EAN number: 3165141077186
  • Condition: New
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DENSO Iridium TT IK20TT Spark plug M14x1.25,
Article number: IK20TT
Reviews - 29
  • Product line: Iridium TT
  • Spark Plug: with resistor, 1 - Earthed Electrode, Iridium Middle Electrode, Platinum mass electrode
  • Thread Length [mm]: 19
  • Thread Size: M14x1.25
  • Connector type: Solid SAE
  • Gross Weight [g]: 46
  • alternative item: IK20TT
  • Item number: IK20TT
  • Manufacturer: DENSO
  • EAN number: 2266190251000
  • Condition: New
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  • Product line: Nickel TT
  • Spark Plug: 1 - Earthed Electrode, Nickel Middle Electrode
  • Spanner Size: 16 mm
  • Thread Length [mm]: 19
  • Thread Size: M14x1.25
  • Connector type: Solid SAE
  • Tightening Torque [Nm]: 22
  • Diameter: 14
  • Weight [g]: 43
  • for OE number: 1WT318110
  • alternative item: IK20, IK20TT, IK20
  • Item number: K20TT
  • Manufacturer: DENSO
  • EAN number: 0425114604478
  • Condition: New
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  • Spark Plug: Platinum Middle Electrode, 4 - Earthed Electrode, Interference Suppression 5 kOhm, with gasket seat, Fixed SAE connector
  • Spanner Size: 16 mm
  • Thread Length [mm]: 19,0
  • Spark Position [mm]: 3,5
  • Thread Size: M14 x 1,25
  • Item number: 3199
  • Manufacturer: NGK
  • EAN number: 0087295131992
  • Condition: New
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DENSO Iridium TT IXEH20TT Spark plug M12x1.25,
Article number: IXEH20TT
Reviews - 64
  • Product line: Iridium TT
  • Spark Plug: with resistor, 1 - Earthed Electrode, Iridium Middle Electrode, Platinum mass electrode
  • Thread Length [mm]: 26,5
  • Thread Size: M12x1.25
  • Connector type: Solid SAE
  • Gross Weight [g]: 40
  • alternative item: -
  • Item number: IXEH20TT
  • Manufacturer: DENSO
  • EAN number: 2266190264300
  • Condition: New
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RIDEX Nickel TT 686S0024 Spark plug Spanner Size: 16 mm
Article number: 686S0024
Reviews - 78
  • Product line: Nickel TT
  • Spark Plug: 1 - Earthed Electrode, Nickel mass electrode, Nickel Middle Electrode
  • Spanner Size: 16 mm
  • Thread Length [mm]: 26,5
  • Connector type: Solid SAE
  • Tightening Torque [Nm]: 22
  • Diameter: 14
  • Weight [g]: 48
  • Item number: 686S0024
  • Manufacturer: RIDEX
  • EAN number: 4059191685431
  • Condition: New
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  • Spark Plug: with gasket seat, Ring type connector (cup-shaped), Iridium Middle Electrode, 1 - Earthed Electrode, Interference Suppression 5 kOhm
  • Spanner Size: 14 mm
  • Thread Length [mm]: 28,5
  • Spark Position [mm]: 4,7
  • Thread Size: M12 x 1,25
  • Version: Bi-Hex
  • Item number: 95248
  • Manufacturer: NGK
  • EAN number: 2215127755850
  • Condition: New
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  • Electrode Gap [mm]: 0,9
  • Spanner Size: 16 mm
  • Thread Length [mm]: 19
  • Spark Position [mm]: 6
  • Thread Size: M 14 x 1,25
  • Tightening Torque [Nm]: 28
  • Number of pins: 2
  • Item number: 0 242 235 668
  • Manufacturer: BOSCH
  • EAN number: 3165143134382
  • Condition: New
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  • Product line: Nickel
  • Spark Plug: 1 - Earthed Electrode, Nickel Middle Electrode
  • Spanner Size: 16 mm
  • Thread Length [mm]: 19
  • Thread Size: M14x1.25
  • Connector type: Solid SAE
  • Tightening Torque [Nm]: 22
  • Diameter: 14
  • Weight [g]: 43
  • for OE number: 90080-91193
  • alternative item: K16TT
  • Item number: K16R-U11
  • Manufacturer: DENSO
  • EAN number: 2066166665600
  • Condition: New
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  • Electrode Gap [mm]: 0,9
  • Spanner Size: 16 mm
  • Supplementary Info: Super 4
  • Thread Length [mm]: 19
  • Spark Position [mm]: 5
  • Thread Size: M 14 x 1,25
  • Tightening Torque [Nm]: 28
  • Number of pins: 4
  • Item number: 0 242 232 501
  • Manufacturer: BOSCH
  • EAN number: 2030114812600
  • Condition: New
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  • Spark Plug: Nickel Middle Electrode, 1 - Earthed Electrode, Interference Suppression 5 kOhm, with gasket seat, Fixed SAE connector
  • Spanner Size: 16 mm
  • Thread Length [mm]: 19,0
  • Spark Position [mm]: 4,0
  • Thread Size: M14 x 1,25
  • Item number: 2526
  • Manufacturer: NGK
  • EAN number: 0087295125267
  • Condition: New
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  • Product line: Iridium
  • Spark Plug: Iridium Middle Electrode, Nickel mass electrode
  • Electrode Gap [mm]: 0,7
  • Spanner Size: 16 mm
  • Thread Length [mm]: 19
  • Spark Position [mm]: 3,3
  • Thread Size: M 14 x 1,25
  • Tightening Torque [Nm]: 28
  • Number of pins: 1
  • Resistor [kOhm]: 6
  • Item number: 686S0028P
  • Manufacturer: RIDEX PLUS
  • EAN number: 4067448729142
  • Condition: New
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  • Spark Plug: 1 - Earthed Electrode, Nickel Middle Electrode
  • Electrode Gap [mm]: 0,8
  • Spanner Size: 20,8
  • Thread Length [mm]: 19
  • Spark Position [mm]: 3
  • Thread Size: M 14 x 1,25
  • Tightening Torque [Nm]: 28
  • Number of pins: 1
  • Item number: SKSP-1990010
  • Manufacturer: STARK
  • EAN number: 4059191393183
  • Condition: New
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STARK SKSP-1990008 Spark plug Spanner Size: 16 mm
Article number: SKSP-1990008
Reviews - 9
  • Electrode Gap [mm]: 1,1
  • Spanner Size: 16 mm
  • External Thread [mm]: 14
  • Thread Length [mm]: 19
  • Spark Position [mm]: 3
  • Thread Pitch [mm]: 1,25
  • Tightening Torque [Nm]: 28
  • Number of pins: 1
  • Tightening angle [degrees]: 90
  • Item number: SKSP-1990008
  • Manufacturer: STARK
  • EAN number: 4059191393169
  • Condition: New
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