OEM 800167078 The XCMG 4917573 Flywheel Housing 800167078 is a genuine OEM cast housing engineered to enclose the flywheel and align the starter on XCMG hydraulic excavators.
Identified by part number 800167078, this factory-machined housing mounts between the engine block and transmission, forming a rigid structural bridge.
It is cast from high-grade iron or aluminum alloy, then machined on both faces to precise flatness and bore alignment for accurate assembly.
Exact OEM bolt pattern, spigot diameter, and starter location allow direct replacement without shimming, filing, or drilling on site.
By holding the starter and flywheel in correct relation, this flywheel housing protects the ring gear and ensures reliable engine cranking.
The 800167078 Flywheel Housing is cast with internal ribs that resist bending, cracking, and vibration fatigue under heavy digging loads.
Both mounting faces are machined flat, so the engine block and bell housing mate without gaps that could cause misalignment.
The spigot bore is machined to the exact OEM diameter, which centres the transmission and keeps the input shaft aligned with the crankshaft.
The starter opening is positioned to the XCMG drawing, so the pinion engages the ring gear at the correct depth and angle.
A protective coating resists rust, mud, and oil exposure, which keeps the casting sound and the mating faces clean.
Exact OEM bolt pattern allows direct replacement, so the housing installs without drilling or adding adapter plates.
Production starts with certified metal ingots checked for chemical composition and mechanical properties before melting and pouring.
Castings are inspected for porosity, blowholes, and shrinkage before they move to the CNC machining line.
Machining is carried out in a single setup where possible, so the front face, rear face, spigot bore, and starter bore stay concentric.
Inspectors check flatness, bore diameter, bolt hole position, and starter bore location against the XCMG drawing on a sampling basis.
Batch records let XCMG trace each 800167078 housing back to its casting lot and machining run, so any deviation is resolved fast.
The flywheel housing is the structural bridge between the engine and the transmission, and it also anchors the starter motor.
If the housing is cracked or distorted, the starter can engage off-centre, which chews the ring gear and causes hard starting.
The genuine 800167078 holds the starter and flywheel in correct relation, so the pinion meshes cleanly and cranking stays reliable.
A rigid, flat housing also keeps the transmission input shaft aligned, which reduces bearing wear and seal leaks in the gearbox.
Correct alignment lowers vibration, protects the flywheel ring gear, and keeps the drivetrain smooth during digging and travel.
The 800167078 Flywheel Housing requires lifting equipment and standard hand tools because of its size and weight.
Support the engine and transmission, disconnect the battery, and separate the components as described in the workshop manual.
Clean both mating faces and remove old gasket material, rust, or burrs so the new housing seats flat and true.
Lift the new housing into place, install the bolts by hand, then tighten them in the specified sequence to the manual torque.
Check the spigot fit and starter engagement, then rotate the engine by hand to confirm the ring gear clears the pinion.
During routine maintenance, inspect the housing for cracks, oil soak, and loose bolts, and correct any issue before it grows.
Every 800167078 housing is produced in an ISO 9001 and ISO 14001 certified plant with traceability from casting to packed crate.
Incoming castings are checked for porosity and dimensions, and finished housings are measured for flatness and bore alignment.
During production, inspectors monitor bolt hole position, spigot diameter, and starter bore location to keep tolerances tight.
Post-production checks include visual inspection, coating thickness measurement, and a trial fit on the XCMG engine fixture.
Sample housings from each batch undergo load and vibration testing to confirm structural integrity under real machine conditions.
Low-cost aftermarket housings often use weak castings or rough machining that distort under load or misalign the starter.
A housing with the wrong spigot diameter can shift the transmission, which overloads bearings and causes seal leaks.
The genuine 800167078 is cast and machined to the XCMG drawing, so bolt pattern, spigot, and starter bore 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 flywheel housing delivers dependable performance in harsh conditions.
Choosing the genuine 800167078 housing prevents a small misalignment issue from turning into a major drivetrain repair.
A distorted housing can ruin the ring gear, wear the starter drive, and damage the transmission input bearing within a short time.
Durable casting and proper machining keep alignment accurate across a long service life, reducing replacement frequency.
Reliable alignment also extends starter, flywheel, and gearbox life, lowering the total cost of ownership for fleet operators.
Fleet records from construction and mining operations show genuine XCMG engine parts help cut drivetrain-related downtime.
XCMG applies sustainable manufacturing to the 800167078 housing through recyclable metal content and efficient casting processes.
The long service life of the housing reduces material waste and lowers the environmental footprint of replacement parts over time.
Correct alignment prevents oil leaks at the gearbox, which supports cleaner operation on sensitive construction sites.
Metal and coating materials in this component meet RoHS and REACH rules for safe handling and responsible disposal.
The 800167078 Flywheel Housing is held in XCMG regional distribution centres across North America, Europe, Asia, and Australia.
Each housing is wrapped and packed in a reinforced export crate that protects the machined faces from impact and moisture.
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 face damage and coating loss common in stored spares.
The XCMG 4917573 Flywheel Housing 800167078 is a vital drivetrain component for XCMG excavators, joining engine and transmission precisely.
Its ribbed casting, machined faces, and accurate spigot deliver dependable alignment in hot, wet, and dusty environments.
By holding the starter and flywheel in correct relation, this housing reduces downtime, lowers maintenance costs, and extends machine life.
Always purchase genuine XCMG parts from authorised dealers to guarantee authenticity, quality, and performance for your equipment fleet.
Choose the 800167078 Flywheel Housing for dependable engine alignment and lasting operational peace of mind.
Partner with XCMG, your trusted source for heavy equipment engine and hydraulic components that deliver real value.
OEM 800167078 – XCMG 4917573 Flywheel Housing – the definitive flywheel housing solution for your excavator engine and drivetrain assembly. Engineered for structural rigidity, designed for exact fitment, and backed by global quality standards. Trust the original to protect your investment and maximise uptime.
