5I-8066 5I8066 Oil Relief Valve 62.4mm for S6KT Engine 311 312B 320C Excavator Oil Pump
The 5I-8066 / 5I8066 Oil Relief Valve is a 62.4mm long engine oil pressure relief valve designed for compatible S6KT engine applications, including 311, 312B, and 320C excavators. Installed in the engine lubrication system, this oil relief valve helps regulate oil pressure by controlling excess oil ...
S6KT engine oil relief valve
,Excavator oil pump relief valve 62.4mm
,320C excavator oil relief valve
The 5I-8066 / 5I8066 Oil Relief Valve is a 62.4mm long engine oil pressure relief valve designed for compatible S6KT engine applications, including 311, 312B, and 320C excavators.
Installed in the engine lubrication system, this oil relief valve helps regulate oil pressure by controlling excess oil flow when system pressure reaches the specified operating range. Proper oil pressure regulation is important for maintaining reliable lubrication of critical engine components and supporting stable engine operation.
Manufactured from precision-machined metal with accurately formed threads, oil passages, and sealing surfaces, the 5I-8066 Oil Relief Valve provides a practical replacement option for engine oil pump and lubrication system maintenance.
Key Features
- Part Number: 5I-8066 / 5I8066 / 5I 8066
- Product Name: Engine Oil Relief Valve
- Length: Approx. 62.4mm
- Compatible Engine: S6KT
- Compatible Models: 311 / 312B / 320C
- Pressure Regulation: Designed to help maintain appropriate engine lubrication oil pressure
- Precision Oil Passages: Machined openings support controlled oil flow
- Durable Metal Construction: Suitable for demanding diesel engine operating environments
- Precision Threading: Designed for secure installation in the corresponding oil system
- Compact Direct-Replacement Design: Convenient for engine maintenance and overhaul
- Quality Inspection: Available with pre-shipment inspection
Product Specifications
| Item | Details |
|---|---|
| Product Name | Oil Relief Valve |
| Part Number | 5I-8066 / 5I8066 |
| Length | Approx. 62.4mm |
| Compatible Engine | S6KT |
| Compatible Models | 311 / 312B / 320C |
| Machine Type | Excavator |
| System | Engine Lubrication System |
| Application | Oil Pressure Regulation |
| Related Component | Engine Oil Pump |
| Material | Precision-Machined Metal |
| Category | Excavator Engine Spare Parts |
| Condition | New Replacement Part |
| Packaging | Protective Export Packaging |
| Shipping | Worldwide Shipping Available |
Main Function
The 5I-8066 Oil Relief Valve plays an important role in the engine lubrication system. When oil pressure rises beyond the corresponding operating level, the relief valve provides a controlled path for oil flow, helping prevent excessive pressure within the lubrication circuit.
Stable lubrication pressure helps ensure that engine components receive the oil supply required during operation. This is particularly important for excavators working under continuous loads, high temperatures, construction environments, and extended operating hours.
When Should the Oil Relief Valve Be Checked?
A worn, stuck, contaminated, or damaged oil relief valve may contribute to abnormal lubrication-system behavior. Possible symptoms can include oil pressure that is too high or too low, unstable oil-pressure readings, lubrication warnings, oil leakage, or abnormal engine operation.
However, abnormal oil pressure can also result from the oil pump, oil filter, oil passages, engine bearings, incorrect oil viscosity, sensors, or other lubrication-system components. The complete system should therefore be inspected before replacing the valve.
Compatible Applications
The 5I-8066 / 5I8066 Oil Relief Valve is intended for compatible applications involving:
Engine Model: S6KT
Excavator Models: 311 / 312B / 320C
Typical applications include construction, excavation, earthmoving, roadwork, infrastructure maintenance, quarrying, and other heavy-equipment operations.
Important Fitment Information
Oil relief valves with similar external dimensions may have different thread sizes, valve lengths, internal pressure settings, oil passage configurations, and engine applications.
Before ordering, please verify the 5I-8066 part number and 62.4mm length against your original component.
For accurate matching, please provide:
Part Number + Engine Model + Excavator Model + Machine Serial Number + Engine Serial Number + Original Valve Photos + Valve Dimensions
We recommend confirming compatibility before installation rather than selecting the valve based only on appearance.
Why Choose JISION?
JISION supplies oil relief valves, engine oil pumps, water pumps, fuel injectors, turbochargers, sensors, solenoid valves, engine rebuild parts, hydraulic components, controllers, and other construction machinery spare parts.
We support parts matching, wholesale orders, quality inspection, secure export packaging, and worldwide shipping. Send us your machine model and part number for compatibility confirmation and quotation.
SEO Meta Description
5I-8066 5I8066 62.4mm oil relief valve for S6KT engine and 311 312B 320C excavators. Replacement excavator oil pump pressure relief valve from JISION.
