NGK Standard Spark Plug
AB-6
$8.99
Sale price
$8.99
Regular price
$8.99
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NGK Standard Spark Plug for Harley-Davidson SS125 Motorcycle - Street
NGK Standard Spark Plug for Harley-Davidson SS125 Motorcycle - Street
$8.99
Sale price
$8.99
Regular price
$8.99
SKU:38-2245
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Description
Standard Spark Plug
The workhorse, at the heart of smooth-running engines around the world.
FEATURES
- OEM Quality
- Triple-Gasket Sealing Process
- Consistent Performance
- Plug of Choice in Millions of Vehicles
- Sold each
Technical Specifications
- MFG. Part Number AB-6
Vehicle Information
Harley-Davidson SS125 Motorcycle - Street (1973-1977)
The Harley-Davidson SS125, a lightweight motorcycle developed in partnership with Aermacchi, was part of a series of 125cc models offered from 1973 to 1977. Known for its compact design and European-influenced chassis, the SS125 (available 1975-1977) was powered by a 123cc two-stroke, air-cooled single-cylinder engine, producing 13 horsepower. This model was generally offered as a single variant without distinct trim levels. While the SS125 itself saw no significant mid-cycle changes from 1975 to 1977, the broader 1973-1977 period represents a progression of Harley-Davidson's 125cc two-stroke offerings. The TX125 was available in 1973, followed by the SX125 in 1974, which introduced an aluminum cylinder with a hardchrome bore. The SS125 then succeeded these models in 1975, continuing the lineage with a similar 125cc engine. These models were presented individually rather than having multiple trims. Q: How do I ensure I'm selecting the correct parts for my Harley-Davidson SS125?
A: To guarantee a perfect fit, please use the year and model selector at the top of the page. This will filter parts specifically compatible with your motorcycle's exact specifications.
Maintenance
| Component | Interval | Details |
| Two-Stroke Oil | Check before each ride, refill as needed | The SS125 uses a two-stroke engine; oil is mixed with fuel or injected. No traditional engine oil filter. Use manufacturer-recommended oil. |
| Transmission Oil | Annually or every few thousand kilometers | Check oil level regularly. Change at least once a year or more frequently if ridden often or under heavy load. |
| Oil Filter | Not applicable | The two-stroke engine of the SS125 does not have a conventional engine oil filter. |
| Drive Chain | Clean and lubricate every 800 km | Inspect regularly for dirt, rust, binding links, and wear. Replace if excessive wear is noted (e.g., chain pulls away from sprocket). |
| Spark Plug | Inspect every 1 600 to 3 200 km, replace as needed | Two-stroke engines can foul spark plugs more easily. Replace if signs of fouling, wear, or performance issues. Typical lifespan is 12 800 to 16 000 km. |
| Air Filter | Inspect and service every 8 000 to 16 000 km or more frequently | Inspect more often in dusty conditions. Foam or cotton gauze filters can often be cleaned and re-oiled; paper filters should be replaced. |
| Coolant | Not applicable | The Harley-Davidson SS125 is an air-cooled motorcycle and does not use liquid coolant. |
These intervals are generalized based on common practices for two-stroke motorcycles of the era. For precise recommendations, always consult an original owner's manual.