C100 L.Crank Case Body

Brand: Mortch Motor
Product Code: MIC100-6009

Product Viewed: 254

Availability: Pre-Order

Weight: 1.30kg

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C100 Left Crankcase Body

🔧 Crankcase Body · Engine Half · Left Side

For Moped, Cub & ATV · Fits 139FMB, 147FMD, 147FMF, 150FMG engines

📋 Product Overview

This is a C100 Left Crankcase Body, a core structural component of the engine. It is suitable for Mopeds, Cub series, and ATVs, and fits engines including 139FMB, 147FMD, 147FMF, 150FMG, and similar models.

The crankcase body forms the framework of the engine. When assembled with the right crankcase body, it creates the complete engine housing, accommodating the crankshaft, transmission, clutch, oil pump, and other core components. The left crankcase body typically houses the transmission gears and clutch assembly, making it a critical support component for power transfer. Manufactured from high-quality aluminum alloy with excellent structural strength and heat dissipation, it is an ideal replacement when the original crankcase body is damaged, warped, or worn.

✨ Key Functions: Supports crankshaft and transmission · Houses clutch assembly · Forms engine main structure · Direct replacement

📐 Specifications

Product Name

C100 Left Crankcase Body

Engine Application

139FMB / 147FMD / 147FMF / 150FMG

Material

Aluminum Alloy

Position

Engine Left Side (mates with right case)

🔧 Compatible Engine Models

This C100 left crankcase body fits the following engine models:

139FMB

147FMD

147FMF

150FMG

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

🛵 Compatible Vehicles

Mopeds - Various 50cc-150cc moped models
Cub Series - Honda Cub and clone models
ATVs - Small-engine quad bikes / kids ATVs
Mini Moto / Pocket Bikes
Other vehicles using 139FMB, 147FMD, 147FMF, 150FMG engines

📌 Compatibility Note: This C100 left crankcase body is suitable for the engine models listed above. Replacing the crankcase body requires complete engine disassembly; professional installation is strongly recommended.

⚙️ Importance of Crankcase Body

The crankcase body is the foundational structural component of the engine, with critical importance:

Structural Support: Supports the crankshaft, transmission, clutch, starter motor, and all internal components.
Precision Fitment: Critical areas such as crankshaft bearing bores, transmission bearing bores, and clutch mounting surfaces require precision machining for proper alignment.
Sealing Function: Works with the right crankcase to form a sealed engine chamber, preventing oil leaks.
Heat Dissipation: The aluminum alloy construction helps dissipate engine heat.

⚠️ Crankcase Failure Symptoms: Oil leaks, engine noise, shifting difficulty, loss of power, increased vibration, loose bearings. If you experience these issues, inspect the crankcase and replace if necessary.

⚠️ Left Crankcase Body Failure Symptoms

Oil Leakage: Visible oil seepage at the mating surface between left and right crankcase halves.
Warped Case: Crankcase deformed due to impact or overheating, affecting internal component alignment.
Worn Bearing Seats: Crankshaft or transmission bearing seats worn, causing loose bearings and noise.
Damaged Clutch Mounting Surface: Uneven clutch mounting surface affecting clutch operation.
Cracks: Cracks in the crankcase, potentially causing oil leaks or reduced structural strength.
Stripped Threads: Mounting bolt holes stripped, unable to secure fasteners properly.
Uneven Mating Surface: Damaged mating surface preventing proper sealing with the right case.

If you experience these symptoms, inspect the crankcase body and replace if necessary.

✨ Product Features

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: Critical areas such as bearing bores, mating surfaces, and clutch mounting positions precision-machined for proper alignment.
Reinforced Structure: Enhanced design at key points for improved structural strength and durability.
Heat Resistant: Material designed to withstand engine operating temperatures.
Direct Replacement: Perfect substitute for damaged or worn original left crankcase bodies.

🔧 Installation Tip

1. Replacing the crankcase body requires complete engine disassembly; professional installation is strongly recommended.
2. Clean all mating surfaces before installation to ensure no oil or debris.
3. Inspect all bearings and oil seals; it is recommended to replace them at the same time.
4. Use a new gasket or sealant to ensure proper sealing between crankcase halves.
5. Tighten crankcase bolts in the correct sequence and to the specified torque.
6. After installation, check that the crankshaft rotates smoothly, transmission shifts properly, and clutch operates correctly.

⚠️ Important Notice: This is a C100 left crankcase body for Mopeds, Cubs, ATVs, and vehicles using 139FMB, 147FMD, 147FMF, 150FMG engines. The crankcase body is a core engine component; replacement requires complete engine disassembly and should be performed by a qualified professional. Images are for reference only. The actual product may vary.

🔧 Compatibility Notice

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 Disclaimer

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.

💰 Import Duties & Taxes

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.

📌 Order Confirmation: By completing your purchase, you acknowledge that you have read, understood, and agreed to all terms above. For any questions, please contact our support team prior to ordering.