The Honda 13310-ZM3-040 Crankshaft is a genuine OEM Crankshaft designed for GX22 and GX31 horizontal shaft engines and UMK422 and UMK431 trimmers. As a factory-original component, this crankshaft is manufactured to Honda's exact specifications, ensuring proper fitment without guesswork. Honda supersedes parts at serial number breaks, so confirm your unit's serial number against the fitment table before ordering to be certain part number 13310-ZM3-040 is the right match for your machine.
Key Features
- Genuine OEM Precision — manufactured by Honda to exact dimensional tolerances for the small-displacement GX22 and GX31 engines, ensuring correct stroke geometry and bearing journal dimensions that an aftermarket piece may not replicate
- Direct OEM Replacement — drops in as a like-for-like swap with no rework, because it is the same component Honda installed at the factory
- Broad Fitment — covers GX22 and GX31 horizontal shaft engines as well as UMK422 and UMK431 trimmers; check your serial number against the fitment table to confirm the correct application
- Engine Performance Integrity — a sound crankshaft converts every combustion stroke into clean rotational output; a worn or damaged crankshaft causes vibration, power loss, and accelerated bearing wear throughout the engine
The crankshaft is the central rotating component of a four-stroke engine. It converts the linear thrust of the piston — driven by each combustion event — into the rotational force that drives the output shaft and, in turn, the equipment the engine powers. On compact engines such as the GX22 and GX31, and in the UMK422 and UMK431 trimmers, the crankshaft also drives the camshaft through its timing relationship, keeping valve events in step with piston travel. When a crankshaft develops wear at its journals or sustains impact damage, the result is excessive vibration, loss of power, and rapid deterioration of connecting rod bearings and main bearings — making timely replacement essential to keeping the engine running cleanly.
Part Details
| Part Number | 13310-ZM3-040 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Crankshaft |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX22, GX31 | All |
| Trimmer | UMK422, UMK431 | 1148599-9999999 |
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.
