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LG A7TC Spark Plug for GY6 50cc–150cc Engines (139QMB, 154QMI, 157QMJ)
LG A7TC Spark Plug for GY6 50cc–150cc Engines (139QMB, 154QMI, 157QMJ)
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Product Overview
High-quality LG A7TC spark plug designed for GY6 horizontal engines, delivering reliable ignition, faster throttle response, and stable performance for 50cc–150cc Chinese-made vehicles.
Specifications
| Item | Details |
|---|---|
| Spark Plug Model | LG A7TC |
| Thread Size | M10 × 1 |
| Engine Type | 4-Stroke Horizontal Engine |
| Electrode Material | Nickel Alloy |
| Insulator Material | High-Temperature Ceramic |
| Condition | Brand New Aftermarket |
Product Compatibility
| Category | Compatible Models |
|---|---|
| Engine Displacement | 50cc / 70cc / 90cc / 110cc / 125cc / 140cc / 150cc |
| Engine Models | GY6 Horizontal Engine Series |
| Common Engine Codes | 139QMB, 154QMI, 157QMJ |
| Vehicle Types | ATV, Dirt Bike, Pit Bike, Go Kart, Buggy, Scooter |
| Brand Fitment | Most Chinese-made brands using GY6 engines |
| Spark Plug Type | A7TC Equivalent |
Key Features
- Designed for GY6 horizontal engine ignition systems
- High-quality ceramic insulator resists cracking under high heat
- Nickel alloy electrode ensures stable spark and long service life
- Helps improve throttle response and cold starts
- Optimized combustion contributes to better fuel efficiency and lower emissions
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Fitment FAQ
Will this part fit my specific model and year?
This spark plug is intended for Category; Compatible Models; Engine Displacement; 50cc / 70cc / 90cc / 110cc / 125cc / 140cc / 150cc; Engine Models; GY6 Horizontal Engine Series; Common Engine Codes. Key physical/spec details from the product data include Thread Size: M10 × 1, 50cc, 150cc. Use the compatibility table and product photos together before ordering.
Do I need to match the OEM part number?
Yes. If your original part has a stamped OEM or manufacturer number, match that number first before ordering. For this spark plug, also compare the thread size, reach, heat range, electrode style, and original plug code. This is especially important for GY6 GY6 models because similar model names can use different parts by year or trim.
What models or situations does this part not fit?
Do not order this spark plug for machines outside the listed compatibility, or for units with different OEM numbers, dimensions, mounting points, connectors, or year-specific configurations. Do not rely only on the model name or engine size.
What should I check before ordering?
Before ordering, compare your original part with the photos and check the thread size, reach, heat range, electrode style, and original plug code. Recheck listed specs such as Thread Size: M10 × 1, 50cc, 150cc. If any connector, mounting point, size, or year detail is different, confirm fitment before installation.
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