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21739130 Premium Engine Exhaust Valve - Heavy-Duty Cylinder Head Scavenging Valve for VOLVO D7E / D6E Engines, EC210D, EC240B, and EC290B Crawler Excavators (Cross-Ref: 20755883)

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  2. 21739130 Premium Engine Exhaust Valve - Heavy-Duty Cylinder Head Scavenging Valve for VOLVO D7E / D6E Engines, EC210D, EC240B, and EC290B Crawler Excavators (Cross-Ref: 20755883)
21739130 Premium Engine Exhaust Valve - Heavy-Duty Cylinder Head Scavenging Valve for VOLVO D7E / D6E Engines, EC210D, EC240B, and EC290B Crawler Excavators (Cross-Ref: 20755883)

Restore factory engine compression and stop exhaust manifold leaking with our Premium Heavy-Duty Engine Exhaust Valve 21739130 (20755883). Forged from specialized high-nickel austenitic steel with a Stellite cobalt-base hard-faced seat for VOLVO D7E/D6E engines, EC210D, EC240B, and EC290B excavators, this valve ensures an airtight combustion seal under extreme heat. Factory-direct B2B wholesale pricing with rapid international air express shipping. Contact our engineering support team today with your Engine Serial Number for bulk volume tier quotes!

Genuine VOLVO Engine Exhaust Valve 21739130 Specification

Genuine VOLVO Engine Exhaust Valve — High Temperature Resistant Exhaust Gas Valve

The Genuine VOLVO Premium Heavy-Duty Engine Exhaust Valve (Part Numbers: 21739130 / VOE21739130 / 20755883) is a core high-temperature resistant valve train part installed inside cylinder head, specially designed for VOLVO D7E and D6E electronic common rail diesel engines. Driven by rocker arm, it discharges high-temperature waste gas out of combustion chamber during exhaust stroke. Different from intake valves, exhaust valves work in long-term high-temperature harsh environment, featuring excellent high-temperature oxidation resistance, corrosion resistance and compression sealing performance. Replacing aged and damaged exhaust valves during top overhaul can effectively restore engine exhaust efficiency, stabilize cylinder pressure, eliminate power attenuation and exhaust backflow failure.

Core Technical Advantages

  • High-Nickel High-Chromium Austenitic Superalloy: Superior high-temperature creep resistance and hot hardness, not easy to soften and deform under long-term ultra-high temperature working condition.

  • Stellite Alloy Hardened Sealing Surface: Cobalt-based alloy surfacing treatment effectively resists high-temperature ablation, carbon deposition erosion and valve surface sinking air leakage.

  • Hard Chrome Plated Precision Polished Stem: Smooth surface reduces internal friction of valve guide, effectively prevent valve sticking, carbon jamming and stem abnormal wear.

  • Friction Welding Combined Structure: Separate material design for valve head and stem gives full play to respective performance, strong impact resistance and long service life.

Technical Specifications

Engineering ParameterTechnical Data & Specification Details
Genuine OEM Part No.21739130 / VOE21739130 / 20755883
Product NameEngine Cylinder Head Heavy-Duty Exhaust Valve
Matched EngineVOLVO D7E / D6E Series Diesel Engine
Stem ProcessCenterless fine grinding + hard chrome wear-resistant coating
Sealing AngleOriginal factory standard grinding angle, closely fitted with valve seat
Main MaterialAustenitic high-temperature resistant superalloy with hard alloy sealing face

Master Application Fleet Guide

This genuine exhaust valve is universally applicable to cylinder head maintenance of VOLVO engineering machinery equipped with D6E and D7E engines:

  • Heavy Crawler Excavators: EC200D, EC200E, EC210D, EC210E, EC240B, EC250D, EC290B, EC300D

  • Backhoe Loaders & Wheel Loaders: BL60, BL71B, L45B, L110E

  • Road Construction Equipment: G710B, G746B, G960, G990 Motor Graders, SD135B Compactors, ABG8820B, P8820D Pavers

Critical B2B Procurement & Maintenance Guidelines

B2B Procurement Strategy

Exhaust valves bear higher temperature load than intake valves and are more prone to ablation and cracking, which are essential matching parts for cylinder head overhaul. It is recommended that spare parts dealers prepare full-set exhaust valves according to engine cylinder quantity, match with intake valves, valve guides, valve oil seals, valve springs and cylinder head gaskets to form complete valve train overhaul kits, and support matching use with cylinder liner four-piece sets for overall engine major repair.

Common Failure Symptoms

  • Insufficient engine compression, weak power, slow response under heavy load, easy stalling

  • Abnormal popping sound inside exhaust pipe, unstable engine operation and obvious misfire

  • Excessive black smoke emission, high exhaust temperature and incomplete fuel combustion

Standard Overhaul Installation Steps
Disassemble cylinder head, remove old exhaust valves and check ablation and crack condition. Replace worn valve guides and loose valve seats synchronously. Thoroughly clean carbon deposits inside exhaust passages. Grind new exhaust valves moderately to ensure full fit between valve face and valve seat. Daub assembly lubricating oil on valve stem, install valve oil seal, spring and lock pieces in sequence. After cylinder head assembly, strictly adjust exhaust valve clearance per factory standard, which is larger than intake valve clearance to reserve thermal expansion space. Excessively small clearance will cause valve burning, while excessive clearance will produce impact noise and accelerate wear. Manually crank engine to confirm flexible operation without jamming before formal test run.

Global Brand Cross-Reference Matrix

BrandCross Reference Part Information
VOLVO Original Part Number21739130 / VOE21739130
Alternative Replacement No.20755883
Industry General NameEngine Exhaust Valve / Cylinder Head Waste Gas Discharge Valve / High Temperature Engine Valve
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 equipment models are for compatibility reference only. Our high-temperature resistant exhaust valves keep smooth exhaust emission and stable power output for VOLVO D6E & D7E diesel engines.

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