GUS-834/10991 Upper Radiator Hose for JCB 3CX / 4CX (Dieselmax Stage IIIB/Tier 4i)

JCB Code: JCB-028 | OEM: GUS-834/10991 | Brand: GEARUP SUPPLY | Origin: Hungary
Material: Heavy-Duty Reinforced EPDM Rubber | Temp Range: -40°C 至 +125°C
Compatible Models: 4CX (Ecomax & Early Models) — JCB Dieselmax Stage IIIB/Tier 4i | Note: Often replaced together with 834/10990 (lower hose); verify serial number

The GUS-834/10991 is a heavy-duty reinforced EPDM rubber upper radiator hose manufactured by GEARUP SUPPLY in Hungary, specifically engineered for JCB 3CX and 4CX Backhoe Loaders equipped with JCB Dieselmax Stage IIIB/Tier 4i engines, including Ecomax and earlier models. This molded curved hose features a tapered inner diameter of approximately 45-50mm for optimal coolant flow from the thermostat housing to the radiator upper tank.

With a length of approximately 300-400mm and operating across -40°C to +125°C, this hose is typically replaced together with the lower radiator hose GUS-834/10990 for a complete cooling system service. Serial number verification is recommended to ensure correct fitment across model years.

Key Features:

Material: Heavy-duty reinforced EPDM rubber
Inner Diameter: ~45-50mm tapered design
Engine Compatibility: JCB Dieselmax Stage IIIB/Tier 4i
Service Tip: Pair with 834/10990 (lower hose) for complete replacement
Origin: Made in Hungary under strict quality control standards