OEM 800168979 The XCMG Bypass Hose 800168979 is a genuine OEM coolant bypass hose engineered to route engine coolant around the thermostat housing on XCMG hydraulic excavators.
Identified by part number 800168979, this factory-made hose keeps coolant circulating during warm-up and prevents hot spots in the cylinder head.
It is built with a heat-resistant EPDM tube, synthetic reinforcement, and a tough outer cover that resists coolant, oil, and abrasion.
Exact OEM length, bend radius, and inner diameter allow direct replacement without cutting, clamping adapters, or rerouting the line.
By holding a tight, kink-free path, this bypass hose protects the water pump, thermostat, and engine from overheating and pressure loss.
The 800168979 Bypass Hose uses an EPDM tube that resists hot coolant, glycol additives, and long-term heat aging without cracking.
Synthetic fibre reinforcement keeps the hose from ballooning or collapsing when the cooling system pressure rises.
The molded shape follows the OEM route exactly, so the hose clears the thermostat housing, brackets, and nearby engine parts.
A tough outer cover resists abrasion from vibration and rubbing, which is a common cause of coolant leaks on excavators.
Exact inner diameter and length let the original clamps seat properly, so the hose seals without extra sealant or adapters.
Correct bypass flow helps the engine reach operating temperature evenly and avoids head gasket stress from hot spots.
Production starts with certified EPDM compound tested for hardness, tensile strength, heat aging, and coolant resistance before building.
The hose is built on a mandrel that matches the OEM bend path, so the finished part keeps its shape and full inner diameter.
Vulcanization bonds tube, reinforcement, and cover into one strong wall, and trimming removes flash from both ends.
Inspectors check inner diameter, length, wall thickness, bend angle, and surface quality on samples from every batch.
Batch records let XCMG trace each 800168979 hose back to its compound lot and curing press, so quality questions are resolved quickly.
The bypass hose gives coolant a short path around the closed thermostat, so the water pump keeps circulating fluid during warm-up.
Without that flow, the cylinder head can heat unevenly, and temperature swings stress the gasket and castings.
The genuine 800168979 keeps the bypass open and unrestricted, so warm-up stays even and the thermostat opens at the right time.
A kinked or collapsed bypass hose starves the pump and can cause coolant boiling, which leads to overheating and downtime.
Stable cooling also keeps hydraulic oil temperature in range, which protects seals and maintains predictable machine response.
The 800168979 Bypass Hose installs with hose clamp pliers and standard hand tools during scheduled cooling system service.
Let the engine cool completely, release cooling system pressure, and drain coolant to the level recommended in the workshop manual.
Loosen the clamps, twist and pull the old hose free, then clean both fittings and check for corrosion or cracked nipples.
Slide the new hose onto both fittings without twisting it, and position the clamps behind the bead at each end.
Refill with the specified coolant mixture, run the engine to operating temperature, and check for leaks at both connections.
During routine maintenance, squeeze the hose to check for softness or cracking, and replace it before it bursts on site.
Every 800168979 hose is produced in an ISO 9001 and ISO 14001 certified plant with traceability from compound to packed carton.
Incoming rubber is tested for hardness and heat resistance, and finished hoses are measured for bore, length, and bend angle.
During production, curing time, temperature, and mandrel condition are monitored so every hose keeps its molded shape.
Post-production checks include visual inspection, dimensional verification, and a trial fit on the XCMG cooling circuit fixture.
Sample hoses from each batch undergo pressure, heat aging, and coolant soak tests to confirm long-term performance.
Low-cost aftermarket bypass hoses often use low-grade rubber that hardens, swells, or cracks from heat and coolant additives.
A hose with the wrong bend or diameter can kink after installation, which blocks bypass flow and causes overheating.
The genuine 800168979 is molded to the XCMG drawing, so bore, length, bend path, and material match the original part.
Using genuine XCMG parts also preserves warranty coverage, protects resale value, and maintains compatibility with other OEM components.
Backed by XCMG global quality standards and technical support, this bypass hose delivers dependable cooling in harsh conditions.
Choosing the genuine 800168979 hose prevents a small coolant weep from turning into an expensive engine overheating repair.
A burst bypass hose can drain the cooling system quickly, which warps heads and damages gaskets within minutes.
Durable EPDM and proper reinforcement keep the hose functional across a long service life, reducing replacement frequency.
Reliable cooling also extends hose, seal, and oil life, lowering the total cost of ownership for fleet operators.
Fleet records from construction and mining operations show genuine XCMG cooling parts cut engine-related downtime.
XCMG applies sustainable manufacturing to the 800168979 hose through efficient mandrel building and reduced material waste.
The long service life of the hose reduces material consumption and lowers the environmental footprint of replacement parts.
Preventing coolant leaks protects soil and groundwater and supports compliance on environmentally sensitive sites.
Rubber materials in this component comply with RoHS and REACH rules for safe handling and responsible disposal.
The 800168979 Bypass Hose is held in XCMG regional distribution centres across North America, Europe, Asia, and Australia.
Each hose is sleeved and packed in a sturdy carton that protects it from kinking, dust, and ultraviolet exposure in transit.
For fleet-wide orders, XCMG provides volume pricing and consolidated freight options that simplify planning and reduce cost.
Real-time stock visibility and dedicated supply chain support help fill urgent requests quickly, shortening downtime on active projects.
Robust packaging preserves factory condition until installation, preventing the deformation and cracking common in stored hoses.
The XCMG Bypass Hose 800168979 is a vital cooling system component for XCMG excavators, routing coolant around the thermostat in demanding conditions.
Its heat-resistant EPDM tube, fibre reinforcement, and molded shape deliver dependable coolant flow in hot, wet, and dusty environments.
By preventing kinks and leaks, this bypass hose reduces downtime, lowers maintenance costs, and extends engine service life.
Always purchase genuine XCMG parts from authorised dealers to guarantee authenticity, quality, and performance for your equipment fleet.
Choose the 800168979 Bypass Hose for dependable cooling and lasting operational peace of mind.
Partner with XCMG, your trusted source for heavy equipment engine and hydraulic components that deliver real value.
OEM 800168979 – XCMG Bypass Hose – the definitive coolant bypass hose solution for your excavator thermostat circuit. Engineered for heat resistance, designed for exact fitment, and backed by global quality standards. Trust the original to protect your investment and maximise uptime.
