C100 Spark Plug 1137

Brand: Mortch Motor
Product Code: MIC100-6014

Product Viewed: 355

Availability: In Stock

Weight: 0.04kg

Packing Size: 2.50 x 2.00 x 9.00cm

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C100 Spark Plug 1137

🔧 Spark Plug · Ignition System · Engine Core Component

For 139FMB, 147FMD, 147FMF, 150FMG engines · Optimized heat range · Performance upgrade

📋 Product Overview

This is a C100 Spark Plug Type 1137, a critical component of the engine's ignition system. It is suitable for 139FMB, 147FMD, 147FMF, 150FMG and similar engine models, making it an ideal replacement for the original spark plug.

The thermal grade of the spark plug is of prime importance with tuning kits. If the wrong grade is used, the kit will overheat or the spark plug will foul. A hotter spark plug transfers more heat to the cylinder head which may lead to piston seizures. This spark plug is recommended for sport and standard kits.

✨ Key Functions: Ignites air-fuel mixture · Optimized heat range · Improves combustion efficiency · Stable and reliable

🔥 Spark Plug Heat Range Explained

📌 What is Heat Range?

The heat range indicates how quickly the spark plug dissipates heat. A "hotter" plug (higher heat range number) dissipates heat more slowly, keeping the center electrode hotter. A "colder" plug (lower heat range number) dissipates heat more quickly, keeping the center electrode cooler.

🔥 Hotter Plug (Colder Running)

Dissipates heat more slowly, higher electrode temperature
Good for low-speed, short-distance riding
Risk of overheating at high RPM

❄️ Colder Plug (Hotter Running)

Dissipates heat more quickly, lower electrode temperature
Good for high-RPM, sustained high-speed riding
Risk of fouling at low speeds

⚠️ Important Note: The 1137 spark plug is recommended for sport and standard kits. Using the wrong heat range can cause engine overheating, piston seizures, or spark plug fouling. Select the appropriate heat range based on your engine's modification level and operating conditions.

📐 Specifications

Engine Application

139FMB / 147FMD / 147FMF / 150FMG

Vehicle Type

Moped / Cub / ATV

🔧 Compatible Engine Models

This spark plug 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 spark plug is suitable for the engine models listed above. Before purchasing, please verify your engine model matches, and select the appropriate heat range based on your engine's modification level.

⚡ Importance of Spark Plug

The spark plug is a core component of the engine's ignition system, directly affecting engine performance:

Ignition: Creates the high-voltage arc that ignites the air-fuel mixture – essential for engine operation.
Combustion Efficiency: Spark intensity directly affects combustion quality, power output, and fuel economy.
Starting Performance: A good spark plug ensures reliable engine starting.
Regular Replacement: Spark plugs are consumable parts; regular inspection and replacement are recommended.

⚠️ Spark Plug Failure Symptoms: Hard starting, rough idle, poor acceleration, increased fuel consumption, engine misfire, backfiring. If you experience these issues, inspect the spark plug and replace if necessary.

⚠️ Spark Plug Failure Symptoms

Hard Starting: Engine difficult to start or requires multiple attempts.
Rough Idle: Engine vibrates at idle, unstable RPM.
Poor Acceleration: Feels underpowered, sluggish response.
Increased Fuel Consumption: Poor ignition leads to incomplete combustion and higher fuel usage.
Engine Misfire: Hesitation or stumbling during riding.
Carbon Fouling: Excessive carbon deposits on the electrode when inspected.
Electrode Wear: Worn or burned electrode, excessive gap.

If you experience these symptoms, inspect the spark plug and replace if necessary.

✨ Product Features

OEM Specifications: Manufactured to original specifications for perfect fitment.
Optimized Heat Range: Type 1137 heat range optimized for sport and standard kits.
Quality Materials: High-quality electrode materials for heat and corrosion resistance.
Reliable Ignition: Provides stable, reliable spark for proper engine operation.
Wide Compatibility: Fits 139FMB, 147FMD, 147FMF, 150FMG and compatible engines.
Direct Replacement: Perfect substitute for damaged or worn original spark plugs.

🔧 Installation Tip

1. Before installation, check the spark plug gap and adjust to specification if necessary.
2. Clean the spark plug hole to remove any debris or oil.
3. Thread the spark plug in by hand to avoid cross-threading.
4. Tighten with a spark plug socket to the specified torque (typically 20-30N·m).
5. Reconnect the spark plug cap securely.
6. Start the engine and check for smooth operation.

⚠️ Important Notice: This is a C100 spark plug type 1137 for 139FMB, 147FMD, 147FMF, 150FMG engines. The thermal grade of the spark plug is of prime importance with tuning kits. Using the wrong grade may cause overheating or fouling. Select the appropriate heat range based on your engine's modification level. 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.

Tags: Bujie, Spark, Spark Plug