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Tailored exclusively to the CG125 motorcycle’s engine system, the oil and air filters work in tandem to maintain engine health.
Oil Filter: A spin-on or cartridge-type component made with a pleated cellulose or synthetic filter media. It is mounted on the CG125’s oil circuit, trapping metal shavings, sludge, and carbon deposits from engine oil to prevent abrasion of moving parts (e.g., crankshaft, connecting rod bearings). Its housing is made of high-impact plastic or metal, resistant to oil pressure and high temperatures (up to 120°C).
Air Filter: A foam or paper-based filter housed in the CG125’s airbox. Its porous structure captures dust, sand, and road debris from incoming air, ensuring only clean air mixes with fuel in the combustion chamber—avoiding cylinder scoring or valve damage. The foam variant is washable (for repeated use), while the paper type is disposable, both matching the CG125’s air intake size for seamless fit.
Both filters are direct OEM-compatible, requiring no modifications for installation, and are optimized for the CG125’s 125cc single-cylinder engine’s low-to-medium operating load.
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) |
The oil filter should be replaced every 1,000–2,000 km. The air filter should be serviced or replaced every 3,000–5,000 km for foam models, or replaced every 3,000 km for disposable paper models, depending on operating conditions.
Yes, if you choose the foam-based air filter variant, it is fully washable and reusable, making it ideal for dusty environments. The paper-based variant is disposable and must be replaced.
Yes, both the oil and air filters are direct OEM-compatible components. The oil filter matches the CG125's oil circuit ports (M20×1.5 thread), and the air filter fits seamlessly into the CG125 airbox slots without modifications.
The oil filter is designed with high-quality media and a durable housing that is resistant to oil pressure and can withstand high temperatures ranging from -30°C up to +120°C.
Regular replacements prevent abrasive particles and metal shavings from wearing out engine bearings, and stop dust or road debris from scratching the cylinder walls. This can extend the CG125’s engine life by more than 30%.
