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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.

Part brand
500 items
STARK SKSP-1990011 Spark plug Spanner Size: 20,8
Article number: SKSP-1990011
Reviews - 5
  • Spark Plug: 1 - Earthed Electrode
  • Electrode Gap [mm]: 0,8
  • Spanner Size: 20,8
  • 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-1990011
  • Manufacturer: STARK
  • EAN number: 4059191393190
  • Condition: New
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STARK SKSP-1990013 Spark plug Spanner Size: 16 mm
Article number: SKSP-1990013
Reviews - 13
  • 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-1990013
  • Manufacturer: STARK
  • EAN number: 4059191393398
  • Condition: New
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  • Product line: V-Line
  • Spark Plug: Nickel Middle Electrode, 1 - Earthed Electrode, Interference Suppression 5 kOhm, with gasket seat, Fixed SAE connector
  • Spanner Size: 20,8 mm
  • Thread Length [mm]: 19,0
  • Spark Position [mm]: 4,0
  • Thread Size: M14 x 1,25
  • Item number: 3577
  • Manufacturer: NGK
  • EAN number: 0087295135778
  • Condition: New
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Spark plug 686S0320P RIDEX PLUS Spark plug SP509 - 686S0320P
RIDEX PLUS 686S0320P Spark plug M14 x 1,25, Spanner Size: 16 mm
Article number: 686S0320P
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  • Spark Plug: Nickel Middle Electrode, 3 - Earthed Electrode, Interference Suppression 1 kOhm, with gasket seat, Fixed SAE connector
  • Spanner Size: 16 mm
  • Thread Length [mm]: 19,0
  • Spark Position [mm]: 5,2
  • Thread Size: M14 x 1,25
  • Item number: 686S0320P
  • Manufacturer: RIDEX PLUS
  • EAN number: 4069197952291
  • Condition: New
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Contents of the Spark plug RIDEX PLUS set:
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Units
Article number
Spark plug
4
686S0036P
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€8.84 / Price per 4 items

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Engine spark plug 686S0316P RIDEX PLUS SP509 spark plug - 686S0316P
RIDEX PLUS 686S0316P Spark plug M 14 x 1,25, Spanner Size: 16 mm
Article number: 686S0316P
Reviews - 1
  • Electrode Gap [mm]: 1,1
  • 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: 686S0316P
  • Manufacturer: RIDEX PLUS
  • EAN number: 4069197952383
  • Condition: New
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Contents of the Spark plug RIDEX PLUS set:
Description of the product
Units
Article number
Spark plug
4
686S0027P
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€9.00 / Price per 4 items

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Spark plugs 686S0322P RIDEX PLUS Spark plug SP509 - 686S0322P
RIDEX PLUS 686S0322P Spark plug M 12 x 1,25, Spanner Size: 14
Article number: 686S0322P
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  • Electrode Gap [mm]: 0,9
  • Spanner Size: 14
  • Thread Length [mm]: 26,5
  • Spark Position [mm]: 5
  • Thread Size: M 12 x 1,25
  • Tightening Torque [Nm]: 23
  • Number of pins: 1
  • Item number: 686S0322P
  • Manufacturer: RIDEX PLUS
  • EAN number: 4069197909981
  • Condition: New
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Contents of the Spark plug RIDEX PLUS set:
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Units
Article number
Spark plug
4
686S0053P
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Engine spark plug 686S0311P RIDEX PLUS SP509 spark plug - 686S0311P
RIDEX PLUS 686S0311P Spark plug M 12 x 1,25, Spanner Size: 16 mm
Article number: 686S0311P
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  • Electrode Gap [mm]: 1,0
  • Spanner Size: 16 mm
  • Thread Length [mm]: 19
  • Spark Position [mm]: 3
  • Thread Size: M 12 x 1,25
  • Tightening Torque [Nm]: 23
  • Number of pins: 1
  • Item number: 686S0311P
  • Manufacturer: RIDEX PLUS
  • EAN number: 4069197952321
  • Condition: New
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Contents of the Spark plug RIDEX PLUS set:
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Units
Article number
Spark plug
4
686S0015P
Details
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€2.25
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€9.00 / Price per 4 items

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Spark plugs 686S0066P RIDEX PLUS Spark plug SP509 - 686S0066P
RIDEX PLUS 686S0066P Spark plug M 14 x 1,25, Spanner Size: 16 mm
Article number: 686S0066P
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  • 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: 686S0066P
  • Manufacturer: RIDEX PLUS
  • EAN number: 4069197911151
  • Condition: New
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Contents of the Spark plug RIDEX PLUS set:
Description of the product
Units
Article number
Spark plug
6
686S0002P
Details
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€2.57
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€10.28 / Price per 4 items

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Engine spark plugs 686S0065P RIDEX PLUS SP509 spark plug - 686S0065P
RIDEX PLUS 686S0065P Spark plug M 14 x 1,25, Spanner Size: 16 mm
Article number: 686S0065P
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  • 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: 686S0065P
  • Manufacturer: RIDEX PLUS
  • EAN number: 4069197911137
  • Condition: New
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Contents of the Spark plug RIDEX PLUS set:
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Units
Article number
Spark plug
4
686S0002P
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€10.28 / Price per 4 items

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Spark plug GCF860092 goCORE Spark plug SP509 - GCF860092
goCORE GCF860092 Spark plug M14 x 1,25, Spanner Size: 16 mm
Article number: GCF860092
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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: GCF860092
  • Manufacturer: goCORE
  • EAN number: 4069197090191
  • Condition: New
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€4.59
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€18.36 / Price per 4 items

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Engine spark plug GCF860035 goCORE SP509 spark plug - GCF860035
goCORE GCF860035 Spark plug M 14 x 1,25, Spanner Size: 16 mm
Article number: GCF860035
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  • Electrode Gap [mm]: 0,8
  • Spanner Size: 16 mm
  • Thread Length [mm]: 17,5
  • Spark Position [mm]: 3
  • Thread Size: M 14 x 1,25
  • Tightening Torque [Nm]: 20
  • Number of pins: 1
  • Item number: GCF860035
  • Manufacturer: goCORE
  • EAN number: 4069197089621
  • Condition: New
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Spark plugs GCF860103 goCORE Spark plug SP509 - GCF860103
goCORE GCF860103 Spark plug M 14 x 1,25, Spanner Size: 16 mm
Article number: GCF860103
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  • Electrode Gap [mm]: 1,1
  • Spanner Size: 16 mm
  • Thread Length [mm]: 17,5
  • Spark Position [mm]: 3
  • Thread Size: M 14 x 1,25
  • Tightening Torque [Nm]: 15
  • Number of pins: 1
  • Item number: GCF860103
  • Manufacturer: goCORE
  • EAN number: 4069197090306
  • Condition: New
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Engine spark plug GCF860001 goCORE SP509 spark plug - GCF860001
goCORE GCF860001 Spark plug M 14 x 1,25, Spanner Size: 16 mm
Article number: GCF860001
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  • 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: GCF860001
  • Manufacturer: goCORE
  • EAN number: 4067448664146
  • Condition: New
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Spark plugs GCF860006 goCORE Nickel Spark plug SP509 - GCF860006
goCORE Nickel GCF860006 Spark plug Spanner Size: 16 mm
Article number: GCF860006
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  • Product line: Nickel
  • Spark Plug: 2 - Earthed Electrode, Nickel Middle Electrode
  • Spanner Size: 16 mm
  • Thread Length [mm]: 19
  • Connector type: Removable SAE
  • Tightening Torque [Nm]: 22
  • Diameter [mm]: 14
  • Weight [g]: 43
  • Gross Weight [g]: 46
  • Item number: GCF860006
  • Manufacturer: goCORE
  • EAN number: 4069197089331
  • Condition: New
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€6.99
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€27.96 / Price per 4 items

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Engine spark plugs GCF860004 goCORE SP509 spark plug - GCF860004
goCORE GCF860004 Spark plug M 14 x 1,25, Spanner Size: 16 mm
Article number: GCF860004
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  • Electrode Gap [mm]: 1,1
  • 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: GCF860004
  • Manufacturer: goCORE
  • EAN number: 4069197089317
  • Condition: New
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Spark plug GCF860034 goCORE Nickel Spark plug SP509 - GCF860034
goCORE Nickel GCF860034 Spark plug Spanner Size: 16 mm
Article number: GCF860034
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  • Product line: Nickel
  • Spark Plug: 1 - Earthed Electrode, Nickel Middle Electrode
  • Spanner Size: 16 mm
  • Thread Length [mm]: 19
  • Connector type: Solid SAE
  • Tightening Torque [Nm]: 22
  • Diameter [mm]: 14
  • Weight [g]: 43
  • Gross Weight [g]: 46
  • Item number: GCF860034
  • Manufacturer: goCORE
  • EAN number: 4069197089614
  • Condition: New
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Engine spark plug GCF860015 goCORE ULTRA SP509 spark plug - GCF860015
goCORE ULTRA GCF860015 Spark plug M14x1,25, Spanner Size: 16 mm
Article number: GCF860015
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  • Product line: ULTRA
  • Spark Plug: 2 - Earthed Electrode, with gasket seat
  • Electrode Gap [mm]: 0,8
  • Spanner Size: 16 mm
  • Thread Length [mm]: 19
  • Thread Size: M14x1,25
  • Connector type: SAE / M4
  • Tightening torque from [Nm]: 20
  • Item number: GCF860015
  • Manufacturer: goCORE
  • EAN number: 4069197089423
  • Condition: New
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Spark plugs GCF860041 goCORE Spark plug SP509 - GCF860041
goCORE GCF860041 Spark plug M12x1.25, Spanner Size: 14 mm
Article number: GCF860041
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  • Spark Plug: 1 - Earthed Electrode, with gasket seat, Copper Centre Electrode
  • Electrode Gap [mm]: 0,9
  • Spanner Size: 14 mm
  • Thread Length [mm]: 26,5
  • Spark Position [mm]: 5
  • Thread Size: M12x1.25
  • Connector type: SAE
  • Packing Type: Box
  • Tightening torque from [Nm]: 20
  • Resistor from [kOhm]: 3
  • Resistor to [kOhm]: 9
  • Projection [mm]: 3
  • Item number: GCF860041
  • Manufacturer: goCORE
  • EAN number: 4069197089683
  • Condition: New
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Engine spark plug GCF860026 goCORE SP509 spark plug - GCF860026
goCORE GCF860026 Spark plug M 12 x 1,25, Spanner Size: 16 mm
Article number: GCF860026
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  • Electrode Gap [mm]: 1,0
  • Spanner Size: 16 mm
  • Thread Length [mm]: 19
  • Spark Position [mm]: 3
  • Thread Size: M 12 x 1,25
  • Tightening Torque [Nm]: 23
  • Number of pins: 1
  • Item number: GCF860026
  • Manufacturer: goCORE
  • EAN number: 4069197089539
  • Condition: New
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Spark plugs GCF860118 goCORE Spark plug SP509 - GCF860118
goCORE GCF860118 Spark plug M14 x 1,25, Spanner Size: 16 mm
Article number: GCF860118
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  • Spark Plug: Iridium Middle Electrode, 1 - Earthed Electrode, Interference Suppression 5 kOhm, with gasket seat, Fixed SAE connector
  • Spanner Size: 16 mm
  • Thread Length [mm]: 26,5
  • Spark Position [mm]: 4,0
  • Thread Size: M14 x 1,25
  • Item number: GCF860118
  • Manufacturer: goCORE
  • EAN number: 4069197090450
  • Condition: New
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