The Honda 90634-ZL8-H00 Sealing Cap is a genuine OEM component designed for a wide range of Honda horizontal and vertical shaft engines, including the GC135, GC160, GX160, GX200, GX240, GX270, GX340, GX390, GX610, GX620, GX670, GCV520, GCV530, GXV340, GXV390, GXV520, GXV530, GXV610, GXV620, and GXV670, as well as HS520 and HS720 single-stage snow blowers. As a genuine Honda part, it is manufactured to the same standards as the original component it replaces. Because Honda supersedes parts across serial number breaks, confirm your machine's serial number against the fitment table before ordering to ensure this is the correct cap for your unit.
Key Features
- Genuine Honda OEM — sourced directly from Honda, this Sealing Cap matches the original specification for a direct, no-fuss installation.
- Broad Engine and Equipment Coverage — listed for Honda GC, GX, GCV, and GXV series engines, including both horizontal and vertical shaft configurations, as well as HS520 and HS720 single-stage snow blowers.
- Serial Number Verification Recommended — Honda updates parts at production breaks, so check your unit's serial number against the compatibility table to confirm the correct fitment for your specific machine.
- Sealing Integrity — a properly fitted sealing cap keeps contaminants out and retains fluids or pressure where it matters, preventing leaks, ingress, or premature wear to adjacent components.
A sealing cap is a closure plug used to seal an opening on an engine or equipment housing — typically a port, passage, or access point that must remain closed during normal operation. It prevents dirt, debris, and moisture from entering internal passages, and keeps fluids or pressure contained within the system. When a sealing cap is missing, damaged, or improperly seated, contaminants can enter the engine or housing and cause accelerated wear or fluid loss, making timely replacement straightforward preventive maintenance.
Part Details
| Part Number | 90634-ZL8-H00 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Sealing Cap |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX670 | 1037872-9999999 |
| Horizontal Shaft Engine | GC135, GC160, GX160, GX200, GX240, GX270, GX340, GX390, GX610, GX620 | All |
| Single-Stage Snow Blower | HS520, HS720 | All |
| Vertical Shaft Engine | GXV610, GXV620 | 1017724-9999999 |
| Vertical Shaft Engine | GCV520, GCV530, GXV340, GXV390, GXV520, GXV530, 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.
