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Home > Agricultural Machinery Parts > OEM 4935793, 3802358, 3928396, 3283603, 3283602, 5524785, 3286277, 3286278, 3802970, 5473238 Cummins Water Pump Replacement for Engine 4B3.9 6B5.9 Exporter, Exporters
OEM 4935793, 3802358, 3928396, 3283603, 3283602, 5524785, 3286277, 3286278, 3802970, 5473238 Cummins Water Pump Replacement for Engine 4B3.9 6B5.9 Exporter, Exporters
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OEM 4935793, 3802358, 3928396, 3283603, 3283602, 5524785, 3286277, 3286278, 3802970, 5473238 Cummins Water Pump Replacement for Engine 4B3.9 6B5.9 Exporter, Exporters

OEM 4935793, 3802358, 3928396, 3283603, 3283602, 5524785, 3286277, 3286278, 3802970, 5473238 Cummins Water Pump Replacement for Engine 4B3.9 6B5.9 Exporter, Exporters

Cooling water pumps with part numbers 4935793, 3802358, 3928396, 3283603, 3283602, 5524785, 3286277, 3286278, 3802970 and 5473238 are OEM-grade replacements specifically engineered for Cummins 4B3.9 (including 4BT/4BTA) and 6B5.9 (including 6BT/6BTA) series diesel engines. As the power core of the engine cooling system, its centrifugal design drives coolant circulation to efficiently dissipate heat from the cylinder block, cylinder head, and turbocharger, ensuring the engine maintains an ideal operating temperature of 85-95°C. With identical core specifications and mounting dimensions across 10 models, it offers direct interchangeability. Suitable for heavy-duty applications in commercial vehicles, construction machinery, and generator sets, it balances reliability and cost-effectiveness, serving as a premium alternative to OEM parts.

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Product Description

Product Overview

4935793, 3802358, 3928396, 3283603, 3283602, 5524785, 3286277, 3286278, 3802970, 5473238 water pump replacements belong to the Cummins B-series engine cooling water pump system, all featuring centrifugal construction and crankshaft belt drive design.

The core components comprise a corrosion-resistant pump body, wear-resistant impeller, double-row ball bearings, and graphite-ceramic mechanical seals. These products comply with Cummins original equipment specifications and are compatible with 4B3.9/6B5.9 series mechanical and electronically controlled models, covering China III to China IV emission stages.

Functional Categorization:
  • ● Basic Universal Type: (3802358, 3802970) - Suitable for all standard operating conditions.
  • ● Enhanced Durability Type: (3286277, 3286278) - Features hardened pulleys for upgraded wear resistance.
  • ● Enhanced Optimization Type: (5524785, 5473238) - Features upgraded seals and bearings for high-load applications.

Technical Specifications

Part Name Water Pump Origin China
Part Number 4935793, 3802358, 3928396, 3283603, 3283602, 5524785, 3286277, 3286278, 3802970, 5473238
Pump Type Centrifugal cooling water pump Drive Mode Crankshaft belt pulley drive
Installation Interface Same as OEM product Purpose Repair/replace/aftermarket
Operating Temperature -40℃~130℃ (short-term peak) Quality OEM standard
Package Standard industrial packing Compatible Engine Cummins 4B3.9, 4BT3.9, 4BTA3.9, 6B5.9, 6BT5.9, 6BTA5.9, etc.

Key Features

⚙️
Full Compatibility

10 part numbers share identical mounting holes and flange interfaces with <0.02mm tolerance, enabling direct interchangeability without piping modifications.

🛡️
Heavy-Duty Construction

Crafted from high-strength cast iron/aluminum. Features fluid-dynamically optimized impellers and dual-row ball bearings rated for ≥5000 rpm.

🔧
Multi-Scenario Adaptability

Supports extreme temperatures (-40°C to 130°C). Hardened pulley designs handle high-load transmission in harsh engineering and marine environments.

✅
Quality Assurance

Undergoes rigorous bench testing with failure rates below industry averages. Graphite-ceramic seals ensure leak rates ≤0.1 ml/h.

Compatible Models Reference

Part Number Compatible Engines Units Containing Part Replacement/Kits
4935793 4B3.9, 6B5.9, ISB3.9/5.9 Series Water Pump (4B3.9/6B5.9) /
3802358 Marine Spare Parts Kits / 3286277, 3286278, 3802970, 5473238
3928396 4B3.9, 6B5.9, B5.9 G, ISB (Chrysler) Water Pump (Various) 3283602, 5524785
3283603 4B3.9, 6B5.9, ISB CM550 Water Pump (Various) 3802358, 3802970, 4089700 Kit
5524785 B3.3, B4.5, B6.7, ISB/ISD, QSB Series Water Pump (Extensive range) 5473172 Kit
3286277 4B3.9, 6B5.9, B3.3, ISB6.7, QSB4.5/5.9 Water Pump (Various) 3286278, 5473238

Frequently Asked Questions

Which engine models are compatible with these 10 pump part numbers?
Compatibility covers Cummins 4B3.9 (4BT/4BTA) and 6B5.9 (6BT/6BTA) series meeting China III/IV standards, including variants like 4BT3.9-G12 and 6BTA5.9-C205. For National V models, please verify the engine CPL code.
Which other components should be replaced during installation?
We recommend replacing the drive belt and automatic tensioner pulley (if used over 20,000 km) and using low-silicate long-life coolant. Always clean the lines and use high-temperature sealant on gaskets.
What are the key installation torque requirements?
Tighten bolts diagonally in a cross pattern at 22-25 N·m. This prevents pump housing cracks and ensures an even seal across the interface.
What symptoms indicate immediate pump replacement?
Critical symptoms include: 1. Coolant leakage from seam/shaft; 2. Humming or squeaking noises (bearing wear); 3. Engine overheating; 4. Impeller binding or looseness due to corrosion.
How often should the water pump and coolant be maintained?
Check belt tension every 10,000 km and inspect for leaks every 20,000 km. Coolant should be replaced every 40,000 km or 2 years to prevent scale buildup.
What causes abnormal noises even if belt tension is normal?
This usually points to internal failure such as bearing wear (loose pulley), impeller rubbing against the housing, or contaminants/debris jammed in the pump chamber. Disassembly is required.

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