AT125 Carburetor Kit for Coleman Powersports ATV 125cc Quad Carb with Air Filter, Fuel Filter, Intake Pipe, Spark Plug, Fuel Line, Clamps, Gaskets
AT125 Carburetor Kit, complete kit shown with carburetor, air filter, fuel line, filters, spark plug, gaskets and intake pipe
AT125 Carburetor Kit, all-in-one layout showing carburetor, air filter, intake pipe, fuel line, filters, spark plug and gaske
AT125 Carburetor Kit, carburetor size diagram showing front and side views with 37mm, 19mm, 32mm and 48mm measurements
AT125 Carburetor Kit, compatible-models graphic showing an ATV, carburetor, air filter, gaskets and accessories
AT125 Carburetor Kit shown in close-up views highlighting the carburetor body, fittings, air intake, and hose connections
AT125 Carburetor Kit, promotional graphic showing ATV repair, carburetor, and engine symptom callouts
AT125 Carburetor Kit promotional graphic showing an ATV rider in the desert and included carburetor parts, filters, gaskets a
AT125 Carburetor Kit graphic showing a mechanic installing a carburetor, with parts displayed and “Easy to install” text.
AT125 Carburetor Kit, four product detail views of the carburetor assembly
AT125 Carburetor Kit, complete kit shown with carburetor, air filter, fuel line, filters, spark plug, gaskets and intake pipe
AT125 Carburetor Kit, all-in-one layout showing carburetor, air filter, intake pipe, fuel line, filters, spark plug and gaske
AT125 Carburetor Kit, carburetor size diagram showing front and side views with 37mm, 19mm, 32mm and 48mm measurements
AT125 Carburetor Kit, compatible-models graphic showing an ATV, carburetor, air filter, gaskets and accessories
AT125 Carburetor Kit shown in close-up views highlighting the carburetor body, fittings, air intake, and hose connections
AT125 Carburetor Kit, promotional graphic showing ATV repair, carburetor, and engine symptom callouts
AT125 Carburetor Kit promotional graphic showing an ATV rider in the desert and included carburetor parts, filters, gaskets a
AT125 Carburetor Kit graphic showing a mechanic installing a carburetor, with parts displayed and “Easy to install” text.
AT125 Carburetor Kit, four product detail views of the carburetor assembly

AT125 Carburetor Kit for Coleman Powersports ATV 125cc Quad Carb with Air Filter, Fuel Filter, Intake Pipe, Spark Plug, Fuel Line, Clamps, Gaskets

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AT125 Carburetor Kit for Coleman Powersports 125cc ATV

Key Features

  • Complete carburetor replacement kit for the Coleman Powersports AT125 125cc ATV.
  • Includes a carburetor, air filter, fuel filter, pre-installed fuel line clamps, spark plug, intake pipe, and two gaskets.
  • Carburetor body is made from lightweight aluminum alloy with corrosion resistance and a favorable strength-to-weight ratio.
  • Designed to restore proper air-and-fuel mixing for internal combustion operation.
  • Engine opening outside diameter: 19 mm.
  • Engine-side bolt-hole spacing: 48 mm on center.
  • Air-filter mount diameter: 35 mm.

Replaces / Cross-Reference Part Numbers

  • AT125
  • AT125-B
  • AT125-EX
  • AT125-UT

Compatibility & Fitment

Fits Coleman Powersports 125cc four-wheeler quad ATV models:

  • AT125-B
  • AT125-EX
  • AT125-UT

Verify the engine model number and compare the existing carburetor, 19 mm engine opening, 48 mm bolt spacing, and 35 mm air-filter mount before installation.

When to Replace

A carburetor may need replacement when internal passages, seals, or metering components no longer regulate fuel correctly. Common symptoms include difficult starting, engine stalling, poor acceleration, excessive fuel consumption, carburetor flooding, excessive exhaust, or fuel leakage. Ethanol fuel, extended storage, restricted airflow, and deteriorated gaskets can contribute to these problems.

Installation Tips

  • Turn off the fuel supply and allow the engine to cool before beginning work.
  • Drain or safely contain fuel from the old carburetor, then remove the fuel line, intake connections, mounting fasteners, and existing gaskets.
  • Compare the replacement carburetor with the original assembly and confirm the mounting dimensions before tightening hardware.
  • Install the new intake pipe and gaskets with clean, properly seated mating surfaces.
  • Connect the included fuel line and secure the pre-installed clamps. Install the air filter and spark plug included in the kit.
  • Check all fuel connections for leaks before starting the ATV. After starting, allow the engine to warm up and verify stable idle and throttle response.

Compatible Models

Locate the model number of your appliance or equipment on the manufacturer's label and use it to check compatibility before ordering

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FAQs

This kit is intended for Coleman Powersports AT125 125cc ATV models, including the AT125-B, AT125-EX, and AT125-UT. Confirm the model designation and compare the original carburetor and intake connection before installation.
The kit includes the replacement carburetor, air filter, fuel filter, intake pipe, spark plug, fuel line, clamps, and gaskets.
Common symptoms include hard starting, stalling, rough or uneven running, poor throttle response, fuel leakage, and an engine that will not maintain idle. A restricted fuel filter, damaged fuel line, or intake leak can cause similar symptoms, so inspect those components during diagnosis.
Shut off the fuel supply and drain the old carburetor before removal. Inspect the fuel tank for sediment, check that the throttle and choke controls move freely, and make sure the airbox and intake mounting surfaces are clean. Replace or clean contaminated fuel before starting the ATV.
Installation is generally a moderate hands-on repair. Basic hand tools such as screwdrivers, pliers, and appropriately sized wrenches or sockets are typically needed to remove the carburetor, fuel lines, clamps, intake pipe, air filter, and spark plug. Allow about 1 to 2 hours for a first-time installation, then check for fuel leaks and adjust the engine idle if necessary.