The Honda 89216-ZB4-000 Plug Wrench is a genuine OEM service tool designed for use across a broad range of Honda engines and power equipment, including GX240, GX340, GX390, GX620, GCV520, and GCV530 engines, EB3500, EB5000, EB6500, EG3500, EG5000, EM3500, and EM5000 generators, and EW140 and EW171 welder generators. Sourced directly from Honda, this is the same wrench specified for use during factory-level spark plug service on these units. Using the correct tool helps ensure spark plugs are seated and torqued properly without damaging the plug or the cylinder head threads.
Key Features
- Genuine Honda OEM Service Tool — manufactured to Honda's own specification, so it engages the spark plug socket correctly on every covered model without slipping or rounding
- Broad Fitment — listed for GX240, GX340, GX390, and GX620 horizontal shaft engines; GCV520 and GCV530 vertical shaft engines; and a wide range of Honda generators and welder generators including EB, EG, EM, and EW series units
- Verify Your Serial Number — Honda periodically supersedes service tools at production breaks, so confirm your machine's serial number against the fitment table before ordering
- Protects Threads at Every Service — a properly fitting plug wrench lets you feel the correct torque without over-tightening, which keeps cylinder head threads in serviceable condition over the life of the engine
A plug wrench is the dedicated removal and installation tool for the spark plug on Honda engines and equipment. Spark plugs must be removed at regular service intervals for inspection or replacement, and using an ill-fitting or makeshift socket risks rounding the plug hex, cross-threading the plug on reinstallation, or cracking the ceramic insulator. This genuine Honda Plug Wrench is sized and shaped to engage the plug correctly, giving the technician confident feel during both removal and torqued reinstallation. Using the right tool at each service interval protects the cylinder head and keeps the ignition system performing as intended.
Part Details
| Part Number | 89216-ZB4-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Plug Wrench |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EB6500 | 1000001-1016317 |
| Generator | EB3500, EB5000, EG3500, EG5000, EM3500, EM5000 | All |
| Horizontal Shaft Engine | GX240, GX340, GX390, GX620 | All |
| Vertical Shaft Engine | GCV520, GCV530 | All |
| Welder Generator | EW171 | 1102470-9999999 |
| Welder Generator | EW140 | 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.
