C100 Cylinder Head 70cc/90cc/110cc
- Brand: Mortch Motor
- Product Code: MIC100-6005
- Product Viewed: 309
- Availability: In Stock
- Weight: 0.99kg
- Packing Size: 15.00 x 13.00 x 11.00cm
US$13.20 236 SOLD
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C100 Cylinder Head Assembly (without valves)
🔧 Cylinder Head Assembly · Engine Core Component
For Moped, Cub, Dirt Bike & ATV · Fits 139FMB, 147FMD, 147FMF, 150FMG engines
This is a C100 Cylinder Head Assembly (without valves), one of the core components of the engine. It is suitable for Mopeds, Cub series, Dirt Bikes, and ATVs, and fits engines including 139FMB, 147FMD, 147FMF, 150FMG, and similar models.
The cylinder head is mounted on top of the cylinder block, forming the combustion chamber together with the piston, while also housing the valve train, spark plug, and other components. This cylinder head assembly includes the cylinder head body, valve guides, but does not include valves, valve springs, or other components. Manufactured from high-quality aluminum alloy with excellent heat dissipation and structural strength, it is an ideal replacement when the original cylinder head is damaged, warped, or worn.
✨ Key Functions: Forms combustion chamber · Houses valve train · Critical for heat dissipation · Direct replacement
Product Name
C100 Cylinder Head Assembly
Engine Application
139FMB / 147FMD / 147FMF / 150FMG
Material
Aluminum Alloy
Includes
Cylinder Head Body · Valve Guides
This C100 cylinder head assembly fits the following engine models:
Engine Reference Information:
- 139FMB: 1P39FMB / 1P39QMB · 50cc-125cc universal engine
- 147FMD: 1P47FMD · 70cc-110cc engine
- 147FMF: 1P47FMF · 90cc-110cc engine
- 150FMG: 1P50FMG · 125cc-150cc engine
- Mopeds - Various 50cc-150cc moped models
- Cub Series - Honda Cub and clone models
- Dirt Bikes - Mini dirt bikes, off-road motorcycles
- ATVs - Small-engine quad bikes / kids ATVs
- Mini Moto / Pocket Bikes
- Other vehicles using 139FMB, 147FMD, 147FMF, 150FMG engines
📌 Compatibility Note: This C100 cylinder head assembly (without valves) is suitable for the engine models listed above. Before purchasing, please verify your engine model matches. Note that this assembly does not include valves, valve springs, or valve stem seals; these must be purchased separately or reused from your original engine.
The cylinder head is one of the most critical engine components, directly affecting engine performance:
- Combustion Chamber Formation: Forms the combustion chamber with the piston and cylinder block, affecting combustion efficiency and power output.
- Intake/Exhaust Control: Houses the intake and exhaust valves, controlling mixture entry and exhaust gas exit.
- Critical Heat Dissipation: The aluminum alloy construction helps dissipate heat generated during combustion, preventing engine overheating.
- Spark Plug Mounting: Provides the mounting location for the spark plug, responsible for igniting the air-fuel mixture.
⚠️ Cylinder Head Failure Symptoms: Loss of power, hard starting, oil consumption, low compression, engine overheating, abnormal noise. If you experience these issues, inspect the cylinder head and replace if necessary.
- OEM Specifications: Manufactured to original specifications for perfect fitment.
- Aluminum Casting: Cast from high-quality aluminum alloy for strength and excellent heat dissipation.
- Precision Machined: Combustion chamber and sealing surfaces precision-machined for proper sealing and combustion efficiency.
- Valve Guides: Pre-installed with high-quality valve guides for easy installation.
- Heat Resistant: Material designed to withstand engine operating temperatures.
- Direct Replacement: Perfect substitute for damaged or worn original cylinder head assemblies.
🔧 Installation Tip
1. Replacing the cylinder head requires engine disassembly; professional installation is strongly recommended.
2. Before installation, check the cylinder block top surface for flatness; resurface if necessary.
3. Use a new cylinder head gasket to ensure proper sealing.
4. When installing valve components, ensure proper clearance between valves and valve guides.
5. Tighten cylinder head bolts in the correct sequence and to the specified torque.
6. After installation, adjust valve clearance to ensure proper engine operation.
- Please verify that this part fits your specific vehicle model and year. Many vehicles share similar names but use different components depending on year or market region.
- We strongly recommend cross-checking with your vehicle's owner's manual or contacting us for confirmation before placing your order.
- Product images, measurements, and descriptions are for reference only. Slight variations in color or appearance may occur due to manufacturing batches or photography lighting—functional specifications remain identical to the ordered part.
- Professional installation is mandatory. Mortch Motor assumes no liability for damages, injuries, or losses resulting from improper installation, misuse, unauthorized modification, or abnormal operation.
- All listed prices EXCLUDE shipping costs, import duties, taxes, and customs clearance fees. These charges (if applicable) are determined and collected by your local customs authority and are solely the buyer's responsibility.
- In case of return due to unpaid duties/taxes or refusal to clear customs, the buyer shall bear the original shipping cost, return shipping fees, and any associated administrative charges deducted from the refund.






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