YNF17309 21W-62-43191 oil hose for Komatsu PC78US-6

Komatsu PC78US-6 engine oil hose YNF17309

21W-62-43191 oil line replacement for excavator

High-pressure oil hose for Komatsu PC78US-6

Komatsu oil pipe 21W-62-43191 aftermarket

YNF17309 21W-62-43191 Oil Hose Komatsu PC78US-6 Engine Oil Line

YNF17309 21W-62-43191 engine oil hose for PC78US-6, durable oil-resistant line for stable lubrication flow.

OEM-Compatible：Designed to replace Komatsu 21W-62-43191
Material：Oil-resistant synthetic rubber + fiber/steel reinforcement
Function：Delivers engine oil for lubrication and cooling
Durability：Resists oil corrosion, pressure, vibration, and heat
B2B Focused：Stable supply and consistent quality for wholesalers & workshops

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Komatsu PC78US-6 Oil Hose Description

The YNF17309 oil hose (21W-62-43191) is specifically engineered for Komatsu PC78US-6 excavators, providing a stable and secure oil flow to the engine lubrication circuit. Manufactured with premium oil-resistant synthetic rubber and reinforced with high-strength layers, this hose withstands continuous oil exposure, pressure fluctuations, and engine vibration under demanding working conditions.

Its OEM-matched flexibility and wall thickness ensure a proper fit, preventing leakage, swelling, or cracking even after extended operation. Reliable lubrication is essential for preventing wear, overheating, and premature engine failure, making timely replacement of the oil hose critical for maintaining machine uptime.

YNF aftermarket hoses are trusted by maintenance teams, distributors, and fleet operators for their long service life, cost-effectiveness, and reliable performance. YNF17309 offers a dependable solution that helps reduce downtime and keeps Komatsu excavators running efficiently.

Komatsu 21W-62-43191 Oil Hose Technical Sheet

Parameter	Details
YNF Part Number	YNF17309
OEM Number	21W-62-43191
Product Type	Oil Hose / Engine Lubrication Hose
Machine Model	Komatsu PC78US-6
Material	Oil-resistant synthetic rubber + reinforced layers
Function	Transfers lubrication oil to engine components
Resistance	Oil, heat, vibration, aging, pressure
Application	Engine lubrication circuit
Brand	YNF
Origin	China
MOQ	1 Pieces
Shipping	Sea, Air, Express
Payment Terms	T/T, PayPal, Western Union

PC78US-6 Oil Hose Applications

Application Area	Description
Engine Lubrication System	Delivers engine oil to lubricate moving components
Excavator Maintenance	Replacement for worn or leaking oil lines
Engine Cooling Support	Helps maintain temperature by circulating oil
Aftermarket Distribution	Ideal for wholesalers and repair workshops

Komatsu PC78US-6 Oil Hose Detail Display

FAQs

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Excavator Oil Hose & Fluid Line Components

FAQs:

Q: Is YNF17309 fully compatible with Komatsu PC78US-6?
A: Yes, it is designed as a direct replacement for OEM 21W-62-43191.
Q: What causes engine oil hoses to fail?
A: Heat, vibration, oil corrosion, and aging—this hose is designed to resist all these factors.
Q: Does this hose support high-pressure oil circuits?
A: Yes, it is reinforced to handle engine lubrication pressure ranges.

Get Free Quote for PC78US-6 Oil Hose

The YNF17309 21W-62-43191 oil hose ensures reliable engine lubrication for Komatsu PC78US-6 excavators. Its oil-resistant structure and reinforced construction deliver stable oil flow and long-term durability under heavy-duty operation. YNF provides stable stock, OEM-equivalent performance, and competitive wholesale pricing—ideal for distributors, repair centers, and fleet maintenance teams seeking dependable excavator oil hoses. Contact us to get your quotation today.

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