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20715681 Premium Heavy-Duty Engine Oil Cooler Core - Multi-Plate Heat Exchanger Element for VOLVO EC240B, EC290B, EC300D Excavators and L110E Wheel Loaders (Cross-Ref: 20405990)

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  2. 20715681 Premium Heavy-Duty Engine Oil Cooler Core - Multi-Plate Heat Exchanger Element for VOLVO EC240B, EC290B, EC300D Excavators and L110E Wheel Loaders (Cross-Ref: 20405990)
20715681 Premium Heavy-Duty Engine Oil Cooler Core - Multi-Plate Heat Exchanger Element for VOLVO EC240B, EC290B, EC300D Excavators and L110E Wheel Loaders (Cross-Ref: 20405990)

Prevent engine oil overheating and stop fluid mixing contamination with our Premium Heavy-Duty Engine Oil Cooler Core Assembly 20715681 (20405990). Engineered with a high-efficiency vacuum-brazed stacked-plate matrix for VOLVO EC240B, EC290B, and EC300D excavators, this cooler core prevents hot-idle pressure drops and internal cracks. Factory-direct B2B wholesale pricing with rapid air express international shipping options. Contact our engineering support team today with your Engine Serial Number for volume tier quotes!

Technical Specifications: Genuine VOLVO Engine Oil Cooler Core Assembly 20715681

Genuine VOLVO Engine Oil Cooler Core Assembly — Stacked‑Plate Lubrication Heat‑Exchanger Solution

The Genuine VOLVO Premium Heavy‑Duty Engine Oil Cooler Core Assembly (Part Numbers: 20715681 / VOE 20715681 / 20405990), also known as Stacked‑Plate Lubrication Heat Exchanger, is a critical thermal‑management component for heavy‑duty VOLVO diesel engines. Installed inside the engine side‑block cooler housing, it exchanges heat between hot lubrication oil (pumped by 23170999) and low‑temperature coolant. Replacing clogged, scaled or ruptured cores eliminates overheat alarms, prevents oil‑coolant mixing, maintains proper lubrication viscosity and protects crankshaft bearings & cylinder liners from wear damage.

Core Technical Advantages

  • High‑Efficiency Stacked‑Plate Design: Vacuum‑brazed multi‑layer plates with internal turbulators maximize heat‑exchange surface area for rapid thermal dissipation.

  • Corrosion‑Resistant Alloy Construction: Heat‑treated cupronickel/aluminum alloy withstands aggressive coolant additives and acidic soot buildup for long‑term service life.

  • CNC‑Machined Precision Flange Seats: Ultra‑flat mounting surfaces ensure leak‑proof sealing and prevent internal fluid bypassing.

  • Thermal‑Shock‑Resistant Furnace‑Brazed Joints: Robust brazed seams handle repeated expansion‑contraction cycles from cold starts to peak‑load high‑temperature operation.

Technical Specifications

Engineering ParameterTechnical Data / Specification Details
Component Assembly Part Numbers20715681 / VOE 20715681 / 20405990
Component ClassificationHeavy‑Duty Stacked‑Plate Liquid‑to‑Liquid Engine Oil Cooler Core Element
Engine CompatibilityHigh‑Tonnage Heavy‑Duty Electronic Diesel Powertrains
Core MaterialHigh‑Thermal‑Conductivity Anti‑Corrosion Vacuum‑Brazed Structural Alloy
Sealing SystemPrecision Nitrile / Fluororubber Seals for Isolated Oil‑Coolant Circuits
Pressure RatingRated for Peak Cold‑Start Lubrication Pressure & Coolant System Pressure Spikes

Master Application Fleet Guide

This oil cooler core fits VOLVO heavy‑duty excavators, wheel loaders, motor graders, pavers and pipelayers:

  • Heavy Crawler Excavators: EC240B, EC250D, EC290B, EC300D

  • Wheel Loaders & Motor Graders: L110E, G710B, G746B, G960, G990

  • Road Construction & Special Equipment: ABG8820B, P8820D Pavers, PL3005D Pipelayers

Critical B2B Procurement & Maintenance Guidelines

B2B Procurement Strategy

Mineral scaling, acidic coolant corrosion and metal‑debris clogging cause core failure. Must be replaced (not flushed) after bearing/oil‑pump/turbo failures to avoid re‑circulating metal particles into rebuilt engines. Stock 20715681/20405990 for engine overhaul kits. Cross‑sell with Viton O‑rings, housing gaskets, oil filters and oil pumps (23170999).

Common Failure Symptoms

  • Milky emulsified oil or sludge in radiator tank caused by ruptured plates mixing oil and coolant

  • High oil‑temperature alarms on monitor (14609502) from soot/lime‑scale clogging reducing heat transfer

  • Unexplained coolant loss + low hot‑idle oil pressure due to overheated thin oil accelerating bearing wear

Best Practice Overhaul Advisory:
Flush entire cooling system thoroughly if oil‑coolant mixing occurs; disconnect main battery switch (17418494), fully cool engine, drain oil & coolant. Install new Viton seals/gaskets lubricated with clean oil, torque housing bolts in star pattern to OEM specs, refill with fresh oil & long‑life coolant, monitor temperature stability via dashboard monitor and inspect for fluid leaks after startup.

Global Brand Cross‑Reference Matrix

BrandCross‑Reference Part Numbers
VOLVO Genuine PN20715681 / VOE 20715681
Factory Interchange20405990
Component GroupStacked‑Plate Engine Oil Cooler Core / Main Lubrication Heat Exchanger Element / Oil Heat Dissipation Core
Commercial Inquiry & Global Logistics:
Supplier: Xuzhou Sinoswift Import & Export Co., Ltd.
Contact: +86 13701956981
Email: [email protected]
Logistics: Global Sea Freight and Fast‑Track Industrial Express Ready

All manufacturer names and model designations are for compatibility reference only. These genuine oil cooler cores provide reliable lubrication‑system thermal protection for global VOLVO construction, quarry, mining and road‑building machinery fleets.

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