Hitachi ZAX330-1 / ZAX330-6 Upper Radiator Hose –(3089835 / YA00000848)

Product Video

1. Key Features & Benefits

• Genuine OEM Specification – Part numbers 3089835 and YA00000848 (interchangeable variants). Manufactured to Hitachi‘s original equipment standards for the ZAX330-1, ZAX330-6, and compatible Zaxis series excavators. This is a brand‑new, factory‑spec component – not an aftermarket substitute.

• Critical Engine Cooling System Component – The upper radiator hose (also known as the coolant inlet hose) connects the engine to the radiator, serving as the primary conduit for hot coolant returning from the engine to be cooled. It ensures efficient coolant circulation, stabilises engine temperature, and prevents overheating during continuous heavy‑duty operation.

• Superior Heat and Pressure Resistance – Manufactured from high‑quality reinforced rubber, specifically engineered to withstand the extreme conditions of mining, quarrying, and heavy construction operations. The hose provides excellent resistance to:

  • High temperatures – withstands the extreme heat of engine coolant

  • Internal pressure – maintains structural integrity under pressurised cooling system conditions

  • Coolant chemicals – resists corrosion and degradation from antifreeze and coolant additives

  • Oil exposure – maintains performance even with minor oil contamination

  • Engine vibration – reinforced construction resists fatigue from continuous vibration

• Optimised Engine Performance and Longevity – A properly functioning upper radiator hose is critical for maintaining combustion efficiency, engine power output, and overall engine longevity. A cracked, swollen, or collapsed hose can cause coolant leaks, engine overheating, and potential engine damage.

• Direct Replacement for ZAX330-1 and ZAX330-6 – Designed specifically for Hitachi ZAX330-1, ZAX330-6, ZAX350-1, and compatible Zaxis series excavators. Hose connections and routing match the original Hitachi specifications exactly – no modifications required. The hose also fits ZAXIS330, ZAXIS330LC, ZAXIS350H, ZAXIS370, ZAXIS350LC, and related models.

• Extended Service Life – The reinforced rubber construction is oil‑ and aging‑resistant, providing long service life and reliable sealing performance. Produced according to OEM specifications for accurate fitment and reliable sealing.

• Pre‑Shipment Visual Verification – Before packing, we send you detailed high‑resolution photographs of the actual unit (part number markings, hose condition, overall quality). You approve shipment – we never ship blind. Video inspection is also available upon request.

• Fast Delivery – 5–7 working days lead time from our Guangzhou warehouse. Flexible shipping options including DHL, TNT, UPS, FedEx, and sea freight.

2. Technical Specifications

3. Applications

The Hitachi 3089835 / YA00000848 upper radiator hose is a critical engine cooling component for ZAX330-1 and ZAX330-6 excavators used across a wide range of demanding job sites:

• Large‑Scale Open‑Pit Mining – ZAX330-1 and ZAX330-6 excavators are 30‑ton class machines that work 20+ hour shifts in extreme conditions. The upper radiator hose ensures a steady, uninterrupted flow of coolant from the engine to the radiator, maintaining stable engine temperatures even under continuous heavy loads. A cracked or bulging hose can cause sudden coolant loss, leading to rapid engine overheating and catastrophic engine damage – a repair that costs tens of thousands of dollars.

• Quarrying & Aggregates – Loading trucks, stockpile management, and material handling in granite, limestone, and basalt quarries generate significant heat loads on the engine. The reinforced rubber construction of this hose is specifically engineered to withstand high‑temperature, high‑vibration environments, ensuring reliable cooling system performance shift after shift.

• Heavy Construction & Infrastructure – Highway excavation, dam building, bridge footings, and large‑scale earthmoving projects place sustained high loads on the engine, generating significant heat. The hose‘s resistance to high temperature, internal pressure, and engine vibration ensures consistent coolant flow and stable engine temperatures throughout long shifts.

• Demolition & Scrap Processing – Shock loads, vibration, and rapid load changes are routine in demolition yards and metal recycling facilities. The hose‘s oil‑ and aging‑resistant construction maintains its integrity under these extreme conditions.

• Equipment Rental Fleet – 30‑ton excavators are high‑value rental assets. A genuine new upper radiator hose ensures reliable cooling system performance and prevents costly engine damage from overheating – avoiding mid‑rental breakdowns and customer complaints.

• Forestry & Land Clearing – Steep slopes, fallen timber, and uneven terrain place variable loads on the engine. The hose ensures consistent coolant flow, maintaining stable engine temperatures even under changing operating conditions.

4. Why Choose Hongtengda Parts

Since 2001, Hongtengda Parts has been a leading distributor of earthmoving machinery parts, serving customers across Southeast Asia, the Middle East, Africa, the Americas, and Oceania. Headquartered in Guangzhou‘s Zhucun parts hub – one of Asia’s major distribution centres for construction machinery parts – we combine deep inventory, cross‑brand knowledge, and reliable global shipping to keep your machines running.

What you get when you order from us:

• 25 years of heavy equipment parts experience – Since 2001, we have been the go‑to supplier for repair shops, fleet owners, and wholesalers worldwide. We understand the critical role that cooling system components play in engine longevity and machine uptime.

• 100% genuine OEM parts – We supply only genuine Hitachi upper radiator hoses (3089835 / YA00000848), not “compatible” substitutes or generic replacements. You receive a hose that matches the original in every measurable dimension – fit, material quality, and resistance properties.

• 90% of our catalog in stock – Your upper radiator hose sits in our Guangzhou warehouse, not in a supplier‘s backlog. From cooling system components to undercarriage kits, most orders are dispatched within 24 hours on fumigated, export‑ready pallets.

• One supplier, all parts – Got a serial number, a model code, or just a photo of a worn‑out part? Our specialists cross‑reference across Hitachi, Caterpillar, Komatsu, Sany, and 15+ brands to find what you need. OEM, OEM‑quality, or hard‑to‑find older model parts – we handle the search so you don‘t have to.

• Pre‑shipment verification – We never ship a hose blind. You receive clear photos of the actual unit before packing – you approve, we ship. Video inspection is also available upon request. When downtime costs money, we move at your speed.

• After‑sales support that works – Three senior technicians review your case together. If it’s a quality issue – we cover it. If not – we still guide you through the fix. We don‘t just sell parts; we keep you running. Video technical support and online support are available to assist with any product-related queries or issues.

Critical installation tip for the upper radiator hose:
– Never remove the radiator cap while the engine is hot – hot coolant under pressure can cause severe burns. Always allow the engine to cool completely before servicing the cooling system.
– Inspect both connection points – before installing the new hose, clean the radiator inlet and the engine outlet ports. Remove any old sealant, debris, or corrosion.
– Replace hose clamps – always use new, high‑quality hose clamps when installing the upper radiator hose. Old clamps may have lost their clamping force or become corroded.
– Position the hose correctly – ensure the hose is not twisted or kinked during installation. A kinked hose restricts coolant flow, reducing cooling system efficiency and potentially causing overheating.
– Check for proper seating – after installation, verify that the hose is fully seated on both connection points and that there are no gaps or misalignments.
– Inspect the entire cooling system – when replacing the upper radiator hose, inspect the lower radiator hose, bypass hoses, and radiator cap for signs of wear or damage. Replace any worn components at the same time.
– Bleed the cooling system – after installation, fill the cooling system with the correct coolant mixture and bleed any trapped air from the system according to Hitachi‘s procedure.
– Check for leaks – after installation, run the engine until it reaches operating temperature and check all connections for leaks.

Warranty note: The warranty period is 3 to 6 months depending on product details. We do not provide warranty service for genuine original parts. Our value is delivered up front: genuine OEM components, new‑condition hose, and pre‑shipment visual verification. For customers who require a warranty‑covered option, we can quote aftermarket alternatives – ask our sales team.

The upper radiator hose is your engine’s lifeline to the cooling system. When it fails, your engine overheats, and catastrophic damage follows. A genuine new upper radiator hose from Hongtengda Parts ensures your ZAX330-1 or ZAX330-6 stays cool under pressure – not with unknown or worn components, but with factory‑fresh engineering. Send us your machine serial number – we will confirm compatibility and provide a quote within 24 hours.