6127414214 6127-41-4214 Exhaust Valve Excavator Engine Parts For KOMATSU S6D155

• 6127414214 6127-41-4214 Exhaust Valve Excavator Engine Parts Fitting For KOMATSU S6D155

• Specification

• Function and Application

1. Controlling Exhaust Gas Discharge
The exhaust valve’s primary role is to regulate the flow of spent exhaust gases out of the combustion chamber. It opens during the exhaust stroke of the engine cycle, when the piston moves upward to expel byproducts of combustion (e.g., carbon dioxide, water vapor, and unburned hydrocarbons). When closed, it seals the combustion chamber to prevent these hot gases from leaking back into the cylinder during the intake, compression, or power strokes. This precise timing ensures efficient removal of exhaust gases, making space for fresh air (or air-fuel mixture) in the next cycle.

2. Sealing the Combustion Chamber Under Extreme Pressure
When closed, the exhaust valve forms a tight seal against its corresponding exhaust valve seat (e.g., part 6127-11-1325). This seal is critical to:

Preventing high-pressure exhaust gases from escaping during the compression and power strokes, which would reduce engine efficiency and power.
Stopping unburned air/fuel mixture from leaking into the exhaust manifold during the intake stroke, which could cause misfires or damage to exhaust system components (e.g., catalytic converters in some applications).

• Compatible models

ENGINES S6D155

• More valve parts fit for KOMATSU machinery

• 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 .

• Product Warranty

1. Warranty Period: 3 Months' warranty from the date of arrival. Longer period of 6 months' warranty could be offered with higher price level.

2. Warranty type: replacement of the parts that have quality problem.

3. Warranty is not valid for below s

* Cutomer give wrong information about the order

* Force Majeure

* Wrong installation and operation

* Rust because of wrong stock & maintenance