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20798186 Volvo MLS Cylinder Head Gasket D6 Series Excavator Loader

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  2. 20798186 Volvo MLS Cylinder Head Gasket D6 Series Excavator Loader
20798186 Volvo MLS Cylinder Head Gasket D6 Series Excavator Loader

Prevent destructive combustion blow-by and oil-coolant cross-contamination with our Premium Heavy-Duty Engine Cylinder Head Gasket 20798186 (24426691). Engineered with an advanced Multi-Layer Steel (MLS) matrix and integrated high-strength fire rings for VOLVO EC210B, EC220D, and L90H fleets, it ensures absolute combustion containment. Factory-direct B2B wholesale pricing with fast air express international shipping. Contact our sales engineering support team today with your Engine Serial Number for bulk tiered bundle quotes!

VOLVO 20798186 Cylinder Head Gasket Specification

Genuine VOLVO Cylinder Head Gasket 20798186

Product Overview: The Genuine VOLVO Cylinder Head Gasket (P/N: 20798186 / VOE20798186 / 24426691) is a high-performance Multi-Layer Steel (MLS) component tailored for 6-cylinder inline diesel engines. Installed between the cylinder block and head, it seals high combustion pressures and isolates coolant and lubricant passages to prevent fluid mixing and protect the engine body from deformation.

1. Core Technical Advantages

  • MLS Structure: High-grade spring steel layers deliver excellent elasticity and recovery to resist frequent combustion impact pressure.

  • High-Temperature Viton Coating: Fine surface coating fills micro-gaps for complete liquid and gas isolation.

  • Reinforced Fire Ring Protection: Embossed steel rings block high-temperature flames and prevent high-pressure gas penetration.

  • Superior Chemical Resistance: Resists erosion from ethylene glycol coolant, diesel fuel, and synthetic oil under harsh operating conditions.

2. Technical Specifications Matrix

Engineering ParameterTechnical Data & Specification Details
Genuine OEM Part Numbers20798186 / VOE20798186 / 24426691
Product ClassificationMLS Multi-Layer Steel Engine Cylinder Head Sealing Gasket
Applicable MediaCombustion gas, ethylene glycol coolant, engine lubricating oil
Material & CoatingTensile spring stainless steel base with Viton fluorocarbon coating
Cylinder Bore ShieldEmbossed reinforced stainless steel fire ring structure
Assembly StandardStrictly conforms to factory deck clearance tolerance requirements

3. Master Application Fleet Guide

This MLS head gasket applies to various VOLVO industrial and heavy-duty machinery:

  • Crawler Excavators: EC160B, EC180B, EC200B, EC210B, EC210B Prime, EC210D, EC210E, EC220D, EC220E

  • Industrial Wheel Loaders: L60F, L90E, L90H

  • Asphalt Road Pavers: P6720D, P6870D

4. Common Failure Symptoms

  • White Smoke & Coolant Loss: Coolant leaks into the combustion chamber, causing thick white exhaust smoke and rapid fluid drops.

  • Milky Oil Emulsion: Mixed fluid forms corrosive sludge inside the engine, destroying lubrication and accelerating internal wear.

  • Expansion Tank Bubbling: High-pressure combustion gas invades the cooling system, creating persistent air bubbles in the tank.

Standard Overhaul & Installation Guidelines:
Cool the engine fully. Drain coolant and remove components, loosening head bolts in reverse sequence. Inspect surface flatness. Clean surfaces thoroughly without scratching. Install the new MLS gasket dry—no extra sealant is required. Use brand-new head bolts, tightening them step by step following factory torque and angle procedures.

5. B2B Procurement Strategy

Head gaskets are critical top-end components. Inferior gaskets fail easily, leading to massive engine repair labor costs. For B2B efficiency, bundle this gasket with new head bolts, manifold gaskets, and valve seals to create a complete upper engine maintenance kit.

6. Global Brand Cross-Reference Matrix

Brand DesignationCross-Reference Part Information
VOLVO Original Part No.20798186 / VOE20798186
Interchangeable Part No.24426691 / VOE24426691
SupplierXuzhou Sinoswift Import & Export Co., Ltd.
Contact+86 13701956981 / [email protected]

Note: All machine models are for compatibility reference only.

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