fullas Huayi P27 Carburetor for Honda GX390/GX340 Engines — OEM Fit, Includes Gaskets & Fuel Line

The fullas Huayi P27 carburetor is a direct-replacement carburetor engineered to restore fuel delivery for Honda GX390/GX340 and compatible 420cc small engines.

If your pressure washer, generator, water pump, or small-engine equipment is running rough, flooding, or won't idle, the Huayi P27 offers an OEM-spec fit and parts kit to get the engine back to reliable starting and steady running. Designed to meet OEM dimensional standards, this P27 unit fits a wide range of applications including Predator, Champion, Lifan and OEM Honda engines often used in pressure washers, pumps, tillers and log splitters.

Will this carburetor fit my engine model?

The Huayi P27 is built to match the common mounting and bore dimensions of many GX390-series and similar engines. Verify your engine’s mounting hole spacing and part number against the listed specs to ensure compatibility.

• Compatible with Honda GX390/GX340 and 188F/190F platforms.
• Fits Predator 420cc, 389cc, 439cc and several aftermarket engines used on pressure washers.
• OEM part numbers referenced: 16100-ZH8-W61, 16100-ZF6-V01, 16100-ZF6-V00, 16100-ZF2-V00, 16100-ZF2-V01.
• Mounting hole center-to-center: 43.6 mm; carburetor core bore: 26.8 mm.

What comes in the box and what installation prep is needed?

The package includes the carburetor plus essential gaskets and fuel connections so you can swap units without hunting for extra parts. Basic hand tools and a clean work surface are usually all that’s required for a routine replacement install.

• Included: 1x Huayi P27 carburetor, 3x gaskets, 1x fuel line, 2x hose clamps.
• Recommended: drain fuel, disconnect battery (if applicable), and photograph linkages before removal.
• Check that the throttle and choke linkages align and that gaskets seal against manifold surfaces.

How will this upgrade affect engine performance?

Replacing a worn or clogged carburetor often restores smooth idling, easier starting, and consistent throttle response. The Huayi P27 replicates OEM fuel metering characteristics when correctly gapped and installed, improving drivability on the original engine platform.

• Reduces stalling, poor idle, and fuel flooding from degraded carbs.
• Restores stable throttle transitions for pressure washers and pumps.
• Returns OEM-like fuel flow when paired with clean filters and correct adjustments.

Any tips to confirm you're buying the right replacement?

Compare physical dimensions, port locations, and OEM numbers listed on your old carburetor with the product photos and specifications. If you’re unsure, keep the old unit handy while checking for matching bolt patterns and bore size.

• Match center-to-center mounting distance: 43.6 mm and core hole 26.8 mm.
• Confirm referenced OEM part numbers against your original carburetor tag.
• Inspect included gaskets and fuel line length to ensure they meet your application needs.

Who is this for: The fullas Huayi P27 carburetor is suited for do-it-yourself mechanics, small-engine repair shops, and owners of pressure washers, generators, water pumps, mini bikes, ATVs, and other equipment powered by Honda GX390/GX340-style engines or compatible aftermarket 389–440cc blocks. If your equipment shows signs of fuel delivery issues and you want an OEM-dimension replacement with basic installation hardware included, this carburetor is designed to get your engine back into dependable operation.