Title
Kubota TRANS FILTER (KU-W21TSH6600)
Description
The Kubota W21TSH6600 transmission filter actively removes contaminants from hydraulic and transmission oil, thereby protecting internal components and ensuring smooth system operation. In operation, it continuously filters oil as it circulates through the transmission and hydraulic system.
First, the filter uses a spin-on full-flow design, meaning all fluid passes through the filter before reaching sensitive components. As a result, it captures harmful particles such as: metal debris, dirt and dust, wear particles. Next, the internal fine filtration media traps contaminants efficiently, while still allowing consistent oil flow. Consequently, the system maintains proper pressure and performance. In addition, the filter helps prevent premature wear and system damage. Therefore, it plays a critical role in extending the lifespan of hydraulic pumps, valves, and transmission components. Moreover, its sealed construction prevents contaminants from re-entering the system. This ensures reliable operation even in demanding environments.
Construction & Design
Kubota designs this transmission filter for durability and efficiency:
- Spin-on steel canister:
Provides strength and easy installation/removal
- High-efficiency filter media:
Captures fine particles to protect internal components
- Sealing gasket:
Ensures a leak-free connection
- Threaded base (typically 3/4″-16 UNF):
Allows secure mounting
- Compact design:
Fits within tight machine layouts
Model Fitment
A & AM Series
B Series Compact Tractors
- B1550HST-D
- B1700-HD
- B1750HST-D
- B2100-HD
- B2110HDB
- B2230HDB / HDBC
- B2231HDB / HDBC
- B2261HDB / HDBC
- B2311HDB
- B2350HDB-C / HDB-F
- B2400-HD
- B2410HDB
- B2530HDB / HDBC
- B2650HDB-C / HDB-F
- B2710HDB
- B3030HDB / HDBC / EC
- B3150HDB-C / HDB-F
- B6200HSTD-PT / GP
F Series (Front Mowers)
- F1900 (UK) / F1900D2 / D3
- F1900E (UK) / E2 / E3
- F2000 / F2000II
- F2400 / F2400-BI
- F251-EU variants
- F2560
- F2880-EC
- F2890E-EU
- F3060
- F3090-EU
- F3560
- F3680-EC
- F3890-EU
- F391-EU variants
G Series (Garden Tractors)
- G1700
- G18
- G1900 / G1900-S
- G2160UK
- G2HST / G3HST
ST / STV / STW Series
- ST ALPHA-30 / 35
- ST341 / ST341C
- ST371 / ST371C
- ST401 / ST401C
- STV32 / STV36 / STV40
- STW34 / STW34C
- STW37 / STW37C
- STW40 / STW40C
Part Description:
- Part name: Transmission / Hydraulic Filter
- Kubota part number: W21TS-H6600
- Alternate format: KU-W21TSH6600
- Type: Spin-on hydraulic/transmission filter
- Height: ~92–102 mm
- Outer diameter: ~80 mm
- Thread size: 3/4″-16 UNF
- Weight: ~0.37–0.42 kg
- Application: Hydraulic & transmission system filtration
- Equivalent / cross reference: Fleetguard HF35308
