MMG
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MMG Cylinder Head Assy, GY6 150cc 157QMJ, Non-EGR
MMG Cylinder Head Assy, GY6 150cc 157QMJ, Non-EGR
MMG Cylinder Head Assy, GY6 150cc 157QMJ, Non-EGR
MMG Cylinder Head Assy, GY6 150cc 157QMJ, Non-EGR
MMG Cylinder Head Assy, GY6 150cc 157QMJ, Non-EGR
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MMG Cylinder Head Assy, GY6 150cc 157QMJ, Non-EGR
MMG Cylinder Head Assy, GY6 150cc 157QMJ, Non-EGR
MMG Cylinder Head Assy, GY6 150cc 157QMJ, Non-EGR
MMG Cylinder Head Assy, GY6 150cc 157QMJ, Non-EGR
MMG Cylinder Head Assy, GY6 150cc 157QMJ, Non-EGR
Complete with pre-installed Valves and Spark Plug, this Cylinder Head is compatible with 150cc GY6 4 Stroke QMJ157 Engines used in various vehicles.
MMG Cylinder Head Assy, GY6 150cc 157QMJ, Non-EGR
MMG

Item #: 49159903

MMG Cylinder Head Assy, GY6 150cc 157QMJ, Non-EGR

89% of respondents would recommend this to a friend

Item #: 49159903

SHP 108

Price Details

Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )

*All items will import from US

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Order now and get it around Tuesday, October 06
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Complete with pre-installed Valves and Spark Plug, this Cylinder Head is compatible with 150cc GY6 4 Stroke QMJ157 Engines used in various vehicles.
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What Stands Out

Complete Assembly
This 150cc GY6 cylinder head comes fully assembled with valves, valve seals, and springs, ensuring easy installation for users and allowing for quick upgrades without additional parts.
Enhanced Performance
Designed for the 157QMJ engine, this cylinder head optimizes airflow and combustion efficiency, enhancing overall performance and power output compared to standard components.
Durable Construction
Manufactured with high-quality materials, this cylinder head ensures long-lasting durability and reliability, reducing maintenance frequency and extending the lifespan of your engine.

Product Details

Shop for high-quality Cylinder Head Assy with Valves, Seals, Springs, and Spark Plug. Get the best deals on Ubuy KW, your Saint Helena for automotive parts.

Product Technical Details

Manufacturer‎MMG
Brand‎MMG
Item Weight‎2.8 pounds
Product Dimensions‎9 x 7 x 5 inches
Manufacturer Part Number‎MMG_MGGN0201_COM

Who Should Buy?

Suitable For
  • Scooter Owners

    Ideal for scooter owners looking to replace a worn-out cylinder head in their 150cc GY6 engine.

  • DIY Mechanics

    Perfect for DIY enthusiasts wanting to upgrade or repair their GY6 engine for improved performance.

  • Budget Builders

    A cost-effective solution for budget builders aiming to enhance their scooters or small motorcycles efficiently.

Not Suitable For
  • High-Performance Racers

    Not suitable for high-performance racing applications requiring specialized cylinder heads for maximum horsepower.

Product Description

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is a Cylinder Head Assembly for a 150cc GY6 engine?

    Answer: The Cylinder Head Assembly for a 150cc GY6 engine, specifically the 157QMJ model, is a crucial part of the engine that houses the valves, valves springs, and sometimes a spark plug. It plays a key role in the intake and exhaust process of the engine, ensuring that air-fuel mixture enters and exhaust gases exit efficiently. A well-functioning cylinder head helps optimize engine performance, improve fuel efficiency, and maintain overall engine health.
  • Question: How can I identify if my Cylinder Head Assembly needs replacement?

    Answer: Signs that your Cylinder Head Assembly may need replacement include engine misfires, reduced power output, unusual engine noise, and overheating issues. If you notice oil or coolant leaks around the cylinder head, it's also a strong indication of a failing assembly. Observing these symptoms consistently can help you determine the necessity of a replacement and avoid further engine damage.
  • Question: What components are included in the Cylinder Head Assembly for the 150cc GY6?

    Answer: The Cylinder Head Assembly typically includes the cylinder head itself, valves, valve seals, valve springs, and a spark plug. Each component serves a specific purpose: valves regulate gas flow, seals prevent leaks, springs maintain tension, and the spark plug ignites the air-fuel mixture. Together, these parts ensure the engine operates smoothly and efficiently.
  • Question: What are the specific advantages of getting a complete Cylinder Head Assembly over individual parts?

    Answer: Purchasing a complete Cylinder Head Assembly offers several advantages, including compatibility assurance, ease of installation, and potential cost savings compared to buying each part separately. With a complete assembly, you can ensure that all components function well together, minimizing the risk of mismatched parts that could lead to performance issues.
  • Question: Can I install the Cylinder Head Assembly myself?

    Answer: Installation of the Cylinder Head Assembly can be done at home if you have some mechanical skills and tools, but expertise is preferred. Procedures involve proper alignment and torque specifications to avoid damaging the engine. Consider consulting a service manual for detailed steps, and if unsure, seek professional help to ensure longevity and optimal performance.
  • Question: What maintenance is required for the Cylinder Head Assembly?

    Answer: Maintenance for the Cylinder Head Assembly primarily includes regular checks for leaks, tightening bolts, and ensuring that the valve clearances are within specification. Regular oil changes and monitoring engine temperatures also contribute to the durability of the head assembly. Proper maintenance helps prolong the lifespan of the assembly and maintain engine efficiency.
  • Question: Will using a high-performance Cylinder Head Assembly improve my engine's performance?

    Answer: Yes, using a high-performance Cylinder Head Assembly can significantly improve engine performance by enhancing airflow and combustion efficiency. These assemblies often feature upgraded valves and springs, allowing for higher RPMs and better throttle response. If you are looking to boost your scooter or ATV's capability, investing in a performance cylinder head can be beneficial.
  • Question: What should I consider when selecting a Cylinder Head Assembly?

    Answer: When selecting a Cylinder Head Assembly, consider compatibility with your engine model, the quality of materials used, and reviews from other users. It's crucial to ensure that the assembly matches your specific engine requirements to avoid complications during installation or operation. Researching reputable brands can also help you find a reliable and durable product.
  • Question: How does a faulty valve seal affect engine performance?

    Answer: A faulty valve seal can lead to oil leaks and increased oil consumption, which may result in poor engine performance. It can also cause engine misfires, as oil may enter the combustion chamber, leading to smoke emissions and potential damages. Staying on top of valve seal conditions is important for maintaining engine efficiency and component lifespan.
  • Question: Where can I buy Cylinder Head Assy 150cc GY6 4 Stroke 157QMJ with Valves, Valve Seals, Valve Springs, and Spark Plug 0201?

    Answer: You can purchase the Cylinder Head Assy 150cc GY6 4 Stroke 157QMJ with Valves, Valve Seals, Valve Springs, and Spark Plug 0201 at Ubuy. They offer a convenient shopping experience, ensuring that you find the right parts to keep your engine running smoothly.

MMG Cylinder Heads Editorial Review

MMG Cylinder Head Assy, GY6 150cc 157QMJ, Non-EGR is designed for durability and performance with a 57mm bore and a 24mm intake/23mm exhaust port. Despite some minor issues regarding missing components, many users report satisfaction with its overall quality, having saved significantly over retail prices. It comes pre-installed with valves, seals, and springs, which simplifies the installation process for mechanics and DIY enthusiasts alike, ensuring smooth operation for 150cc motors. User feedback highlights its effectiveness and value, though it's advisable to check all included parts before installation to avoid any inconvenience.

Customer Reviews & Ratings

13 customers ratings
  • 5 Star
    70%
  • 4 Star
    21%
  • 3 Star
    9%
  • 2 Star
    0%
  • 1 Star
    0%

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Pros

  • High-quality component for GY6 150cc motors
  • Easy installation with pre-installed valves and springs
  • Offers great performance with minimal adjustments
  • Cost-effective compared to retail options
  • Durable design enhances longevity

Cons

  • Some users reported missing minor components in the package.

Platform Trust & Buyer Confidence

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4.2/5 9477 reviews
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Jasmin
Verified buyer

“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot
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Anke
Verified buyer

“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”

10 September 2026 · via Trustpilot
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Hazel
Verified buyer

“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”

10 September 2026 · via Trustpilot
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Opaleye
Verified buyer

“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”

11 September 2026 · via Trustpilot
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Adele
Verified buyer

“Easy to find and order what you want on the website. Delivery is quick to the UK”

8 September 2026 · via Trustpilot
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Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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SHP 108

Order now and get it around Tuesday, October 06

QTY:

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Features & Benefits

  • Compatible with 150cc GY6 4 Stroke QMJ157 Engines
  • Comes with pre-installed Valves and Spark Plug
  • Bore Diameter: 57mm
  • Intake Port Diameter: 24mm
  • Exhaust Port Diameter: 23mm

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