The Honda 16211-ZN1-000 Carburetor Insulator is a genuine OEM component designed for GX620 and GX670 horizontal shaft engines and GXV670 vertical shaft engines. As a direct Honda OEM part, it is built to the exact dimensions and material specification required for proper fitment on these engines. This insulator is compatible across the GX620, GX670, and GXV670 engine lines — confirm your engine model and serial number against the fitment table to ensure you have the correct part for your unit.
Key Features
- Genuine OEM Heat Isolation — sourced directly from Honda, this insulator delivers the precise thermal separation between the carburetor and cylinder head that the original design requires, protecting fuel delivery from heat soak.
- Exact OEM Dimensions — manufactured to Honda's original specifications, this part seats correctly against both the carburetor flange and the intake port without modification.
- Broad Engine Compatibility — fits GX620 and GX670 horizontal shaft engines as well as the GXV670 vertical shaft engine; verify your serial number against the fitment table before ordering.
- Protects Fuel Delivery Consistency — a degraded or cracked insulator allows heat transfer into the carburetor body, which can cause vapor lock, rough running, and hard starting; replacing it restores stable fuel metering.
The Carburetor Insulator is a heat-isolating spacer mounted between the carburetor and the cylinder head intake port. Its job is to block engine heat from conducting directly into the carburetor, keeping the fuel inside cool enough to remain in a liquid state and flow predictably through the jets. When this insulator cracks, hardens, or loses its seal, excess heat migrates into the carburetor body and can vaporize fuel before it reaches the combustion chamber — a condition known as vapor lock — leading to rough idle, hesitation, and difficulty restarting a hot engine. Replacing a worn insulator restores the thermal barrier the fuel system depends on for consistent performance.
Part Details
| Part Number | 16211-ZN1-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Carburetor Insulator |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX620, GX670 | All |
| Vertical Shaft Engine | GXV670 | All |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
