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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 SX175 Motorcycle - Street (1974-1978)
The Harley-Davidson SX175, produced from 1974 to 1978, was an enduro-style motorcycle developed by Harley-Davidson's Italian subsidiary, Aermacchi. Designed as a versatile dual-sport machine for both street and off-road use, it featured a consistent engine specification throughout its production. Powering the SX175 was an air-cooled, two-stroke, single-cylinder engine with a displacement of 174.1 cc, delivering 17 horsepower (12.4 kW) at 6750 RPM through a 5-speed manual transmission. This model was a key part of Harley-Davidson's strategy to compete in the small bike and off-road segments. While generally offered as a single model, a significant mid-cycle update occurred in 1976. Earlier 1974-1975 models featured a solo seat and a unique frame. From 1976 onwards, the SX175 was redesigned with a dual seat for two-up riding and began sharing its frame with SS models, leading to changes in wheelbase (from 54 to 55.7 inches) and saddle height (from 32 to 37.1 inches). Styling and decals also received updates during this period. Q: How do I ensure this product fits my Harley-Davidson SX175?
R: To guarantee compatibility, please use the year and edition selector on this page.
Maintenance
| Component | Interval | Details |
| Oil (2-stroke) | Check level before each use | Two-stroke engine consumes oil. Ensure reservoir is filled with Harley-Davidson specific 50/1 two-cycle oil. |
| Oil Filter | Not applicable | Two-stroke oil injection systems do not use a traditional oil filter. |
| Drive Belt | Not applicable | This model uses a final drive chain, not a belt. |
| Spark Plug | Inspect regularly, replace as needed | Replace if engine starts hard or fails. Use a specific Harley-Davidson spark plug (No. 7 or 7-8). |
| Air Filter | Clean every 8 000 km or more often | Inspect and clean regularly. Replace if damaged or cleaning is insufficient. More frequent in dusty conditions. |
| Coolant | Not applicable | Air-cooled engine, does not require coolant. |
| Drive Chain | Lubricate every 1 600 km | Clean and lubricate more frequently in dusty or dirty conditions. |