NIMTEK carburetor for GY6 50cc engines, fitment view for compatibility checks
NIMTEK carburetor assembly shot showing mounting alignment
Close-up of NIMTEK idle jet 33mm for idle tuning
Close-up of NIMTEK main jet 78mm for fuel delivery optimization
NIMTEK carburetor manifold inner and outer diameter focus for fit accuracy
NIMTEK air filter intake measurements 35 inner and 39 outer
NIMTEK carburetor with 2-pin electric choke ready for wiring
NIMTEK carburetor for GY6 50cc engines, fitment view for compatibility checks
NIMTEK carburetor assembly shot showing mounting alignment
Close-up of NIMTEK idle jet 33mm for idle tuning
Close-up of NIMTEK main jet 78mm for fuel delivery optimization
NIMTEK carburetor manifold inner and outer diameter focus for fit accuracy
NIMTEK air filter intake measurements 35 inner and 39 outer
NIMTEK carburetor with 2-pin electric choke ready for wiring

NIMTEK 49cc Scooter Carburetor for GY6 50cc 4-Stroke Engines with Jet Upgrades — Fits 139QMB PD18J

Elevate your GY6 ride with a jet upgraded carburetorThe NIMTEK 49cc scooter carburetor is engineered for reliability...
Vendor: NIMTEK
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£37.74
£37.74
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NIMTEK carburetor for GY6 50cc engines, fitment view for compatibility checks

NIMTEK 49cc Scooter Carburetor for GY6 50cc 4-Stroke Engines with Jet Upgrades — Fits 139QMB PD18J

£37.74
NIMTEK carburetor for GY6 50cc engines, fitment view for compatibility checks
NIMTEK carburetor assembly shot showing mounting alignment
Close-up of NIMTEK idle jet 33mm for idle tuning
Close-up of NIMTEK main jet 78mm for fuel delivery optimization
NIMTEK carburetor manifold inner and outer diameter focus for fit accuracy
NIMTEK air filter intake measurements 35 inner and 39 outer
NIMTEK carburetor with 2-pin electric choke ready for wiring

NIMTEK 49cc Scooter Carburetor for GY6 50cc 4-Stroke Engines with Jet Upgrades — Fits 139QMB PD18J

£37.74
Description
Description
x

Elevate your GY6 ride with a jet upgraded carburetor

The NIMTEK 49cc scooter carburetor is engineered for reliability across a wide range of 50cc, four-stroke GY6 engines. Designed to support 139QMB and PD18J variants, this upgrade aims to deliver smoother idle, steadier throttle response, and more consistent fuel delivery in everyday riding. Built with durable materials and careful craftsmanship, it offers long lasting performance with less frequent replacements, so you can focus on the road ahead rather than maintenance worries.

Whether you ride a city scooter, ATV, go kart, or small moped, this carburetor is compatible with many Chinese-made models from popular brands. The fitment philosophy centers on broad compatibility while preserving precise tuning, so you can retrof it without sacrificing reliability or ease of service.

Key benefits

  • Smoother idle and more predictable throttle response for daily commuting
  • Broad compatibility with multiple Chinese made scooters and ATVs powered by 50cc four-stroke GY6 engines
  • Jet upgrades designed to optimize fuel delivery and performance under varying loads
  • Durable construction intended for long lasting performance and reduced maintenance cycle

Technical specifications

  • Idle jet size: 33
  • Main jet size: 78
  • Intake manifold side inner diameter: 18
  • Intake manifold side outer diameter: 28
  • Air filter intake inner diameter: 35
  • Air filter intake outer diameter: 39
  • Electric choke: 2-pin plug

Note that this upgrade ships as a single carburetor unit and is intended to complement proper installation and model matching. Before purchasing, compare the carburetor with your current unit and the images to ensure the part will fit your specific model and engine family.

What to expect after installation

With proper pairing and tuning, riders may notice crisper throttle response, steadier idle, and more reliable performance during light acceleration and steady speeds. While results can vary by model and riding conditions, this carburetor provides a solid upgrade path for owners seeking improved fuel delivery and consistent operation.

Package contents

  • 1 x carburetor
  • Guidance to verify fitment by comparing with product images

FAQ

Q: Which engines and models is the NIMTEK 49cc Carburetor compatible with?

A: Designed for 50cc GY6 four-stroke engines and 139QMB/139QMA PD18J variants, with broad support for numerous Chinese-made scooters and ATVs.

Q: What comes in the package and how should I check compatibility?

A: Includes one carburetor; compare your current unit with the product images and verify fitment before purchasing.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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