Supercharged four-intake pipe 311-4907

Caterpillar Grader

Supercharged four-intake pipe 311-4907

PRODUCT DESCRIPTION:

311-4907 is a heavy duty turbocharger inlet air hose, specially designed for Caterpillar 120, 140 and 160 series motor graders. It delivers clean, stable airflow to the turbocharger, ensuring efficient engine performance under heavy duty working conditions.

Functions

1. Airflow SupplyTransmits filtered clean air to the turbocharger efficiently and stably.

2. Pressure ResistanceWithstands intake pressure and vibration to maintain consistent airflow.

3. Leakage PreventionProvides tight sealing to avoid air leaks that reduce engine power.

4. Engine ProtectionEnsures proper air-fuel mixture and protects the turbocharger and engine components.

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PRODUCT DETAILS

Key Advantages

1. OEM Standard FitManufactured to original equipment dimensions for direct replacement and perfect matching on CAT 120 / 140 / 160 graders.

2. High-Strength & Durable StructureMade of heavy-duty material to withstand vibration, high temperature, and pressure in the engine compartment.

3. Excellent Sealing PerformanceDesigned with reliable sealing surfaces to prevent air leaks and maintain turbocharging efficiency.

4. Improved Engine PerformanceEnhances air supply, boosts power, improves fuel efficiency, and reduces black smoke emissions.

5. Long Service LifeResistant to cracking, deformation, and aging under long-term heavy-duty operation.

Typical Specifications

· Material: High-strength, heat-resistant engineering material or metal composite

· Structure: One-piece formed, high rigidity

· Performance: Leak-proof, high temperature resistant, vibration resistant

· Application: Turbocharger intake system of motor grader engines

SPECIFICATION

Parameter	Value
Part Number	311-4907 (3114907)
Product Type	Turbocharged 4-Channel Intake Pipe (engine boost air delivery, four-cylinder dedicated)
Primary Application	Caterpillar 120, 140 & 160 Series Motor Graders (all core/derivative models with Cat turbocharged diesel engines)
Core Material Structure	Inner layer: High-temperature oil-resistant NBR/HNBR rubber; Middle layer: High-strength E-glass fiber reinforcement (2 layers); Outer layer: Wear-resistant, UV & oil-resistant CR rubber; Connection flanges: Metal insert reinforcement (steel/aluminum alloy)
Working Temperature Range	-40°C to +180°C (-40°F to +356°F) – maintains elasticity and structural stability in extreme engine bay temperature changes
Working Boost Pressure Range	0 – 2.5 bar (0 – 36.25 PSI) – matches the rated boost pressure of Cat turbocharged engines for 120/140/160 graders
Structural Design	Symmetric 4-channel integrated pre-formed design; metal-reinforced flanged connection (one end to turbocharger/intercooler, one end to intake manifold)
Connection Method	Metal flange snap-fit + Cat original high-torque clamps (bolt-tightening); sealed with integrated rubber sealing lips
Applicable Engine	Caterpillar OEM turbocharged four-cylinder diesel engines (matched to 120/140/160 Series Motor Graders’ power systems)
Air Tightness Standard	No detectable air leakage under 3.0 bar test pressure (1.2x rated working pressure)
Resistance Performance	Oil-resistant, UV-resistant, anti-aging, anti-pressure pulse (≥100,000 times pulse test passed)
Installation Tools	Standard hand tools (socket set, clamp wrench, screwdriver); no special customized equipment required
Net Weight	Approx. 0.8 – 2.0 kg (1.76 – 4.41 lbs) per unit (varies by exact pre-formed design for different grader models)
Replacement Part Compatibility	Direct OEM replacement; no need to modify the original intake system or engine calibration

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Supercharged four-intake pipe 311-4907

Key Advantages

Typical Specifications

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