High Quality Domestic Replacement CATERPILLAR E303 Radiator (Water Tank) Part No. 3G-2720 / 3G2720 Solves Excavator Overheating and Leakage Issues

The Ultimate Solution for CATERPILLAR E303 Radiator replacement and Engine Cooling System Repair.

Customization and Direct Factory Supply for Engine Cylinder Liners

As a source manufacturer and global export supplier, Honour Time Machinery Limited supports the custom development and factory direct sales of various high-precision engine cylinder liners. Whether you need a Komatsu 6D102 Liner KitCaterpillar 3116 Liner KitCummins B5.9-C Liner Kit, or a Yanmar 4TNV98 Liner Kit, we ensure OEM-grade quality for all applications.

Your Reliable Global Supplier for Excavator Engine Parts

Welcome to Honour Time Machinery Limited, your premier source for high-quality excavator engine repair parts and assemblies. We specialize in components for leading brands including CumminsKomatsuCaterpillarIsuzuKubotaYanmar, and Weichai. Our extensive inventory includes essential items like liner kitpistonpiston ringcrankshaft bearinggasket headturbocharger, and complete engine assembly solutions. We are committed to providing genuine quality aftermarket parts to keep your construction machinery running efficiently.

Spotlight: Premium Replacement CATERPILLAR E303 Water Tank

We are proud to offer a robust, high-performance replacement Radiator for the CATERPILLAR E303 excavator. This unit, with part numbers 3G-2720 and 3G2720, is engineered to meet or exceed OEM specifications, providing an immediate and lasting solution for common overheating and coolant leakage problems. Trust our reliable engine cooling system components for your heavy-duty applications.

Core Product Specification

BrandModelPart No. (With Symbol)Part No. (No Symbol)Product Name
CATERPILLARE3033G-27203G2720Radiator (Water Tank)

5 Key Features of the E303 Radiator 3G-2720

  • Excavator Application: Specifically designed and manufactured for the CATERPILLAR E303 Excavator.

  • Direct Replacement: Perfectly matches the dimensions and performance of the original 3G-2720 part.

  • Durable Construction: Built with corrosion-resistant materials to ensure longevity in harsh construction environments.

  • Optimal Cooling Efficiency: Guarantees effective heat dissipation, preventing engine overheating for the E303 engine.

  • Construction Machinery Use: Ideal for all construction machinery requiring high-reliability cooling systems.

Comprehensive Engine Spare Parts Inventory

We provide a full range of high-quality engine spare parts, from complete overhaul kits to individual components, ensuring the longevity and efficiency of your fleet. Our offerings include: Liner KitPistonPiston RingGasket KitCrankshaftValve GuideNozzleBearingPressure SwitchFlameout SolenoidMonitorRadiatorMain ValveBeltEngine BearingCylinder BlockValve SeatAccelerator MotorTransmitter, and Fan Cooling.

Core Engine Components

Kits/Major PartsReciprocating ComponentsValvetrain/BearingsElectrical/ControlCooling/Ancillary
Liner Kit, Gasket Kit, Gasket Head, Cylinder BlockPiston, Piston Ring, Crankshaft, Connecting RodValve Guide, Bearing, Engine Bearing, Valve SeatPressure Switch, Flameout Solenoid, Monitor, Transmitter, Accelerator MotorRadiator, Main Valve, Belt, Nozzle, Fan Cooling

Other Engine Parts Model We Can Provide

BrandModels Provided
Komatsu3D82, 3D84, 4D105, 6D95, 6D108, 6D110, 4D84, 4D95, 6D102, 6D105, 6D114, 6D170
KOBELCOJ05E, 6D34T, 6D16, J08E, 6D22T, 6D24T, 6D16T, 6D34
CATERPILLAR3114, 3116, C4, C6, 3064T, S6K, C7, C-9, C13
Mitsubishi4D34, 4D24, K4M, S3Q2, 6D16, 6D24, S4KT, 6D40
ISUZU3LD1, 4LE1, 4BG1, 4HK1, 6SD1, 6WG1, 4LE2, 4JB1, 6BG1, 6HK1, 6WF1
Yanmar4D88E, 4TNE84, 4TNV88, 4TNV94L, 4TNE88, 4TNE94, 4TNV98, 4TNV106
HINOJ05E, J08E, V25C, EF750, P11C, V21C, H06CT, H07D
CUMMINSQSB6.7, QSM11-C, B5.9-C, B3.9-C, QSM11, C8.3-C
VOLVOD6D, D6E, D9E, D12D, D7D, D7E, D12E, D16D

Essential Engine Component Glossary

Understanding key components helps in accurate purchasing of your excavator engine components.

  • Piston Ring: Installed in piston grooves, it seals combustion gases and controls oil. Essential part for CUMMINS QSB6.7 Piston Ring durability.

  • Liner Kit: Contains the cylinder sleeve, piston, and piston rings. Forms the combustion chamber. Key for Komatsu 6D102 Liner Kit engine overhaul.

  • Connecting Rod: Connects the piston to the crankshaft, converting reciprocating motion to rotational. Critical in the Caterpillar 3116 Connecting Rod assembly.

  • Turbocharger: Mounted on the exhaust manifold, increases engine power by forcing more air into the combustion chamber. Enhances performance of ISUZU 6HK1 Turbocharger.

  • Water Pump: Circulates coolant throughout the engine block and radiator to manage heat. A maintenance item for Yanmar 4TNV98 Water Pump system.

  • Main Bearing: Supports the crankshaft within the cylinder block. Crucial for smooth rotation in Kubota 4TNV88 Main Bearing.

  • Flameout Solenoid: Typically located on the diesel pump, controls the fuel supply to shut down the engine. Often used on Weichai WP6 Flameout Solenoid systems.

  • Valve Guide: Guides the movement of the engine valves within the cylinder head. Required for precision in HINO J05E Valve Guide replacement.

  • Cylinder Head: Sits atop the cylinder block, forming the roof of the combustion chamber. Integral to the CUMMINS QSM11 Cylinder Head sealing.

  • Gasket Head: A critical seal placed between the cylinder block and cylinder head. Prevents leakage in Komatsu 4D95 Gasket Head installations.

Fault Diagnosis & Essential Maintenance Tips

Common Fault: Engine Overheating on CATERPILLAR E303

If your CATERPILLAR E303 engine begins to overheat, particularly after extended operation, the 3G-2720 Radiator may be clogged internally or leaking, reducing cooling capacity.
Solution: First, check the coolant level and look for external leaks. If the core is old, replace it with our high-quality 3G-2720 Radiator replacement. Also inspect the thermostat and fan belt for proper function.

General Engine Maintenance Schedule

  • Oil Analysis: Perform regular oil sample analysis (SAO) for engines like the Isuzu 4HK1 to detect component wear (e.g., Engine Bearing debris) early.

  • Cooling System Flush: Flush and replace the coolant every 1,000 hours to prevent scale buildup that affects components like the Water Pump and Radiator.

  • Valve Clearances: For Cummins QSB6.7 and similar engines, ensure periodic checks and adjustments of valve clearances to maintain optimal performance and prevent premature Valve Seat wear.

Global Trade and Ordering Information

Key Transaction Details

AttributeDetail
Model NO. / Part No.E303 / 3G-2720, 3G2720
ApplicationExcavator, Construction Machinery
CertificationISO, CE Compliant (Assumed Quality Standards)
ConditionNew, High-Quality Domestic Replacement
Product NameRadiator (Water Tank)
Production Capacity5000PCS/Year
Payment TermsT/T, Western Union, MoneyGram
Delivery MethodsExpress (DHL, Fedex, EMS, UPS) or by Air/Sea

Honour Time Machinery Limited is a trusted international supplier specializing in high-quality diesel engine assemblies and spare parts for construction and heavy machinery, providing global export service and factory-direct solutions.

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