The Honda 12311-Z8B-000 Head Cover is a genuine OEM replacement designed for GC160, GC190, and GCV160, GCV190, and GSV190 engines, as well as HRC216, HRR216, HRS216, and HRX217 lawn mowers. As an authentic Honda part, it is manufactured to the same standards as the original component that left the factory, ensuring a direct, hassle-free installation with no modifications needed to the engine's top-end assembly. Honda supersedes parts at serial number breaks, so verify your unit's serial number against the fitment table before ordering to confirm part number 12311-Z8B-000 is correct for your build.
Key Features
- Genuine OEM Valve Train Sealing — manufactured by Honda to maintain the correct sealing surface over the valvetrain, preventing oil leaks and keeping contaminants out of the top end.
- Broad Engine and Mower Fitment — covers GC160 and GC190 horizontal shaft engines, GCV160, GCV190, and GSV190 vertical shaft engines, and HRC216, HRR216, HRS216, and HRX217 walk-behind lawn mowers, including models across multiple production runs.
- Confirm Your Serial Number — Honda updates parts at defined serial breaks; check your engine's serial number against the compatibility table to make sure this Head Cover is the right match for your specific unit.
- Direct Drop-In Replacement — matches the original mounting points and profile of the OEM cover, so installation follows the same steps as the part being replaced with no custom fitting or adaptation.
The Head Cover seals the top of the engine's cylinder head, enclosing the valvetrain — the rocker arms, valve stems, and associated components — on Honda's overhead-cam GC, GCV, and GSV series engines. It keeps engine oil within the top end and blocks dirt, debris, and moisture from reaching the valve mechanism. When the cover warps, cracks, or develops a failed gasket seat, oil seepage follows, and the exposed valvetrain becomes vulnerable to contamination that accelerates wear and disrupts valve timing — ultimately affecting starting, idle quality, and power output across the equipment it powers.
Part Details
| Part Number | 12311-Z8B-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Head Cover |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GC190 | 2306751-2501802 |
| Horizontal Shaft Engine | GC160 | 5509106-5606966 |
| Lawn Mower | HRC216 | 1016549-9999999 |
| Lawn Mower | HRR216, HRS216 | 1677022-9999999 |
| Lawn Mower | HRX217 | 2670184-9999999 |
| Vertical Shaft Engine | GSV190 | 1096296-9999999 |
| Vertical Shaft Engine | GCV190 | 1693052-9999999 |
| Vertical Shaft Engine | GCV160 | 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.
