The Honda 90855-ZB4-000 Crankcase Grommet is a genuine OEM component designed for a wide range of Honda generators and welder generators, including EB, EM, EG, EW, EX, and EZ series units. As a direct Honda OEM part, this grommet is manufactured to the exact specifications used in original production, ensuring a proper fit without modification. This part is listed for generators including the EB3500, EB3800, EB4000, EB5000, EB6500, EG3500, EG5000, EM3500, EM3800, EM4000, EM5000, EM6000, EM6500, EW140, EW171, EX3300, EX4500, EXW171, EZ3500, and EZ5000 — always verify your unit's serial number against the fitment table before ordering.
Key Features
- Genuine Honda OEM Part — sourced directly from Honda, this Crankcase Grommet meets the same specifications as the original installed at the factory, ensuring a consistent, correctly sized fit within the crankcase assembly.
- Broad Generator Compatibility — listed for Honda EB, EM, EG, EW, EX, and EZ series generators and welder generators, covering both conventional and welder generator applications across an extensive model range.
- Serial Number Verification Recommended — Honda supersedes parts at serial number breaks, so confirm your unit's serial number against the fitment table to ensure part number 90855-ZB4-000 is the correct grommet for your specific machine.
- Vibration and Seal Integrity — a properly functioning crankcase grommet maintains the barrier between crankcase passages and surrounding components; a cracked or missing grommet can allow oil vapor or air to escape where it should not, affecting engine performance and cleanliness.
A crankcase grommet is a small rubber isolator fitted where a passage, wire, or line exits or passes through the crankcase housing. It serves a dual purpose: sealing the opening against oil vapor and contaminants, and cushioning the contact point to prevent vibration-induced wear on surrounding materials. When a grommet hardens, cracks, or is lost during service, the seal is broken — allowing unwanted leakage paths that can lead to oil film loss, contamination ingress, or accelerated wear at the contact point. Replacing a worn grommet with the correct OEM part restores that seal and protects the components around it.
Part Details
| Part Number | 90855-ZB4-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Crankcase Grommet |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EB3500, EB3800, EB4000, EB5000, EB6500, EG3500, EG5000, EM3500, EM3800, EM4000, EM5000, EM6000, EM6500, EX3300, EX4500, EZ3500, EZ5000 | All |
| Welder Generator | EW140, EW171, EXW171 | 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.
