• 6V-4144 6V4144 Coupler Assembly Excavator Spare Parts Fit For 3116 3306 229D 231D 235 235C

• Specification

• Functions

1.Leak-Free Hydraulic Transmission
The assembly uses precision-machined sealing surfaces and durable O-rings/gaskets to prevent hydraulic fluid leakage—critical for maintaining system pressure, reducing fluid waste, and avoiding environmental contamination.

2.Rugged Durability
The steel body is heat-treated for impact resistance and wear resistance, making it suitable for harsh environments (e.g., construction sites with debris, agricultural fields with dust/mud). It withstands vibration and mechanical stress during equipment operation.

3.Easy Installation & Maintenance
Threaded models feature standardized SAE threads for compatibility with Cat’s original hydraulic ports, enabling direct replacement without modifying the system.
Quick-disconnect variants allow tool-free hose changes, saving time during maintenance or attachment swaps (e.g., switching between excavator buckets and breakers).

4.Pressure & Temperature Resilience
Designed to handle Cat hydraulic systems’ high operating pressures and temperature fluctuations, it avoids seal degradation or body deformation under extreme conditions—ensuring long-term reliability.

• Compatible models

• More other coupler parts fit for C A T machine

• Catalog parts list

• We could supply the following spare parts

1 Hydraulic parts: hydraulic pump, main valve, hydraulic cylinder, final drive, travel motor, swing machinery, swing motor etc.

2 Engine parts: engine ass’y, piston, piston ring, cylinder block, cylinder head, crankshaft, turbocharger, fuel injection pump, starting motor and alternator etc.

3 Undercarriage part: Track roller, Carrier roller, Track Link, Track shoe, Sprocket, Idler and Idler cushion etc.

4 Cab parts: operator’s cab, wiring harness, monitor, controller, seat, door etc.

5 Cooling parts: Radiator, air conditioner, compressor, after cooler etc.

6 Other parts: Service kit, swing circle, engine hood, swing joint, fuel tank, filter, boom, arm, bucket etc.

• Advantage

1. Offer Top quality & competitive products

2. Support 12-month warranty

3. 100% tested before shipping

4. Delivery in time

5. A wide range of Oil Pressure Sensor, Fuel Tank Level Sensor, Temperature Sensor, Speed Sensor for excavator 

6. More than 15 years production and 11 years foreign trade experience

7. Professional QC team

8. Best sales team, 24 hours service

• Packing and Shipping

Packing Details :

inner packing : plastic film for wrapping

external packing : wooden

Shipping :

within 3 days after received the payment , by air or by express or by sea on the basis of the

quantity and emergency circumstances.

1. By Couriers: DHL, UPS, FEDEX, TNT are the main courier companies we are cooperated,

2. By Air: Delivery from the Guangzhou air port to customer's destination city air port.

3. By Sea: Delivery from the Huangpu port .