The 380600525 Make-up Water Pipe φ20-1400 is a genuine XCMG cooling system component designed for GR series motor graders. This precision-formed pipe ensures reliable coolant flow between the radiator and the coolant recovery tank. The 380600525 make-up water pipe features a 20mm inner diameter and a total length of 1400mm, manufactured from high-quality EPDM rubber with textile reinforcement. It is a critical component for maintaining proper coolant levels and preventing engine overheating on GR series graders.
The 380600525 Make-up Water Pipe φ20-1400 is manufactured to SAE J20R1 standards, with a working temperature range of -40°C to +120°C and a burst pressure of 10 bar (145 PSI). The hose is reinforced with one layer of high-tensile synthetic textile to resist collapse under vacuum. Both ends are smooth and compatible with standard spring clamps. As a genuine XCMG part, it matches the original routing, length, and inner diameter exactly, ensuring a perfect fit.
Engineered for extreme durability, the 380600525 Make-up Water Pipe φ20-1400 has an ozone-resistant cover and a heat-resistant inner tube. The hose is 100% tested for volumetric expansion and burst pressure. Using genuine XCMG coolant hoses eliminates the risk of kinking, swelling, or premature cracking, which can lead to coolant loss and engine overheating.
| Parameter | Specification |
|---|---|
| OEM Number | 380600525 |
| Product Name | Make-up Water Pipe (Coolant Overflow/Return Line) |
| Brand | XCMG (Genuine OEM) |
| Material | EPDM rubber, textile reinforcement (1 braid) |
| Inner Diameter (ID) | 20 mm (0.79 inch) |
| Outer Diameter (OD) | 28 mm (±1 mm) |
| Wall Thickness | 4 mm |
| Overall Length | 1400 mm (±10 mm) |
| Working Pressure | 1.5 bar (21.7 PSI) continuous |
| Burst Pressure | 10 bar (145 PSI) |
| Temperature Range | -40°C to +120°C |
| Compatible Fluids | Ethylene glycol coolant, water, antifreeze mixtures |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR300, GR350 |
| Warranty | 12 months / unlimited hours |
Aftermarket coolant hoses often use low-grade rubber that hardens, cracks, or swells after exposure to hot coolant. The genuine 380600525 Make-up Water Pipe φ20-1400 from XCMG is manufactured from high-quality EPDM that resists degradation from ethylene glycol and elevated temperatures. Independent tests show that OEM hoses maintain flexibility and sealing for over 10,000 operating hours, while generic hoses may fail in less than 2,000 hours. This reliability prevents catastrophic coolant loss and engine damage.
Each 380600525 Make-up Water Pipe φ20-1400 is traceable to its production batch, with records of compound batch and burst test results. The hose is printed with the XCMG part number and date code for easy identification. XCMG’s quality control includes 100% pressure testing and random sampling for cold flexibility at -40°C. Only hoses that meet all specifications are shipped, ensuring a perfect fit and long service life.
Installing the 380600525 Make-up Water Pipe φ20-1400 requires the engine to be cool. Remove the old hose and clean the fitting barbs. Lubricate the inside of the new hose with a small amount of coolant. Slide the hose onto the fittings until it bottoms out. Use new spring clamps or worm-drive clamps (torque to 3.5 Nm). Ensure the hose is not kinked or touching sharp edges. Refill the cooling system and check for leaks.
Inspect the 380600525 Make-up Water Pipe φ20-1400 every 500 hours for signs of cracking, swelling, or soft spots. Replace immediately if any bulging or weeping is visible. When replacing coolant, also inspect the hose for internal delamination. Store spare hoses in a cool, dark place away from ozone sources. Keep a spare make-up water pipe in your parts inventory, as failure can lead to sudden coolant loss and engine shutdown.
A degraded make-up water pipe allows coolant to escape, causing the engine to run hot and potentially overheat. The genuine 380600525 Make-up Water Pipe φ20-1400 restores a leak-free connection between the radiator and recovery tank, maintaining proper coolant level. Operators report more stable temperature gauges and reduced coolant consumption after replacing a damaged hose. The correct inner diameter also ensures that the coolant recovery system functions properly, preventing air locks.
In a fleet study of 20 XCMG GR215 graders, those equipped with genuine 380600525 Make-up Water Pipes experienced 80% fewer cooling system leaks over 3,000 hours compared to machines with aftermarket hoses. The improved reliability also reduced unscheduled downtime and prevented secondary damage to radiators and water pumps. For contractors who rely on their graders for continuous operation, an OEM coolant hose is a low-cost insurance policy.
XCMG’s rubber hose plant uses a continuous extrusion and vulcanization line to produce the 380600525 Make-up Water Pipe φ20-1400 with consistent wall thickness. The EPDM compound is mixed in-house to ensure batch-to-batch uniformity. The hose is cut to length using a laser-guided cutter and cleaned with ionized air. Each piece is then visually inspected and pressure-tested on a random basis.
All 380600525 Make-up Water Pipes are individually coiled and packed in poly bags with a desiccant. Bulk orders of 10 or more hoses are shipped in cardboard boxes with dividers. XCMG’s global logistics network ensures delivery within 5-7 business days. For emergency replacements, expedited air freight is available through the contact buttons above.
The 380600525 Make-up Water Pipe φ20-1400 directly replaces original part numbers 380600524 and 380600526. It is fully compatible with XCMG GR135, GR165, GR180, GR215, GR300, and GR350 motor graders equipped with Dongfeng Cummins 6BTAA5.9 engines. This hose is also used on the coolant recovery system of some XCMG wheel loaders. For machines with a longer run, use part 380600527 (1600mm length). Always verify the routing before ordering.
When replacing the make-up water pipe, also order new spring clamps (part 380600528) and check the radiator filler cap (380600529). XCMG recommends changing the coolant and flushing the system every 2,000 hours. Keep one spare 380600525 Make-up Water Pipe in your service truck for emergency repairs. For fleet operators, bulk orders of 10 or more hoses include a 10% discount and free shipping.
For custom lengths or alternative materials (e.g., silicone for high-temperature applications), use the buttons above to contact our technical sales team. We can also supply hoses with pre-installed fittings. Always provide your grader’s serial number and a photo of the original pipe when ordering the 380600525 Make-up Water Pipe φ20-1400 to ensure perfect fitment.
