391-612 Gator G6 Mulching Blade for Kubota — 21-9/16 in.
391-612 Gator G6 Mulching Blade for Kubota — 21-9/16 in.
391-612 Gator G6 Mulching Blade for Kubota — 21-9/16 in. is a heavy-duty commercial replacement blade with a carbide-enhanced cutting edge. Its Gator G6 profile improves airflow for mulching, bagging, or side discharge while extending cutting-edge life in demanding conditions.
Verified Specifications
| Blade length | 21-9/16 in. |
|---|---|
| Blade width | 3.00 in. |
| Thickness | 0.250 in. |
| Center hole | 11/16 in. |
| Offset | 5/8 in. |
| Air lift | 1 in. |
| Blade series | Gator G6 |
OEM and Replacement Cross-References
Replaces Kubota K5559-34330. Also cross-references Rotary 15315 and Stens 310-064.
Verified Fitment Guidance
Fits the specified Kubota RCK42P122Z deck. Two blades are required for the verified 42-inch cut configuration.
What One Purchase Includes
One blade. Order two for the verified 42-inch deck configuration.
Fitment Safeguard
Verify the complete part number, mower model, serial range, deck size, mounting pattern, blade orientation, and required quantity before ordering. Similar-looking blades can differ in length, offset, lift, center hole, or rotation.
Installation and Service
Stop the engine, remove the key, disconnect the spark-plug lead, secure the blade, and wear cut-resistant gloves. Install the blade in the correct orientation and torque the hardware to the equipment manufacturer’s specification.