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The oil filter prevents abrasive particles from damaging engine bearings; the air filter stops debris from scratching cylinder walls—extending the CG125’s engine life by 30%+ with regular replacement.
Clean oil (from the oil filter) ensures smooth lubrication, while clean air (from the air filter) maintains proper fuel-air ratio—preserving the CG125’s original power and fuel efficiency.
Both filters match the CG125’s oil circuit ports (oil filter) and airbox dimensions (air filter), enabling tool-free or simple-tool installation for DIY maintenance.
Oil filter media resists clogging from oil contaminants; air filter foam/paper withstands moisture and dust accumulation, ensuring reliable performance in urban or rural environments.
Replaced every 1,000–2,000 km (oil filter) or 3,000–5,000 km (air filter) during CG125’s regular servicing to prevent engine wear.
Used with CG125 engine repair kits (e.g., after piston/bearing replacement) to ensure the restored engine operates with clean oil and air.
Washable foam air filters are ideal for CG125s used on dusty rural roads, as they can be cleaned and reused instead of frequent replacement.
Replaces old, clogged filters (e.g., oil filter with sludge buildup, air filter with dust blockage) to fix symptoms like reduced power or increased oil consumption.
| Specification Item | Oil Filter Details | Air Filter Details |
|---|---|---|
| Model Compatibility | CG125 motorcycle engine | CG125 motorcycle airbox |
| Type | Spin-on/cartridge-type | Foam (washable) or paper (disposable) |
| Filter Media | Pleated cellulose/synthetic blend (95% particle retention for ≥5μm impurities) | High-density foam (80% dust capture) or microfiber paper (90% particle retention) |
| Operating Temperature | -30°C to +120°C | -20°C to +60°C |
| Oil Pressure Resistance | Up to 500 kPa (suitable for CG125’s oil system) | N/A (air intake, no pressure load) |
| Dimensions | Diameter: 60–70mm; Height: 40–50mm | Length: 120–140mm; Width: 80–90mm; Thickness: 20–30mm |
| Mounting Type | Threaded (M20×1.5, matches CG125’s oil filter base) | Snap-in (fits CG125 airbox slots) |
| Weight | ~100–150g | ~30–50g |
| Service Life | 1,000–2,000 km (disposable) | Foam: 3,000–5,000 km (washable); Paper: 3,000 km (disposable) |
| Certification | Complies with ISO 4028 (oil filter standards) | Complies with ISO 5011 (air filter standards) |
It is recommended to replace the oil filter every 1,000 to 2,000 km during your CG125's routine servicing to prevent engine wear and maintain clean oil circulation.
The foam variant of the air filter is washable and can be reused multiple times. However, the paper-based variant is disposable and must be replaced rather than cleaned.
Common symptoms of clogged or worn-out filters include reduced engine power, increased oil consumption, rough idling, or excessive exhaust smoke due to restricted airflow and impure oil.
Yes, both the oil and air filters are direct OEM replacements. They match the exact dimensions, threading (M20×1.5 for the oil filter), and airbox slots of the standard CG125 motorcycle engine without requiring modifications.
The oil filter complies with ISO 4028 quality standards, and the air filter meets the ISO 5011 requirements for air filtration media performance.
