Complete parts for Caterpillar engines
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Caterpillar engine parts
Reliable parts for construction machinery
At Wibako, we provide durable and tested components for construction equipment from renowned brands. We guarantee the highest durability, technical expert support, and lightning-fast shipping, allowing you to effectively reduce downtime and quickly restore your machine to full performance.


Over 30 years of experience
Professional parts distribution
For three decades, Wibako has been a reliable point on the map of component suppliers for heavy construction equipment. In our assortment, you will find original components as well as certified replacements for excavators and loaders from the world's most popular manufacturers. We use expert knowledge to precisely match elements to your machine, which combined with fast logistics allows for the immediate elimination of costly downtime. We support both large enterprises and local service centers, guaranteeing every client standards confirmed by years of industry practice.
Wide assortment
Original and replacement parts for CAT machines
At Wibako, we provide a full range of solutions for users of machines equipped with Caterpillar power units. Our assortment includes both original CAT components and professional replacements from renowned suppliers that guarantee stable and efficient engine operation. We offer everything necessary for service – from pistons, pins, and gasket sets to advanced injection system elements, turbocharging, and oil pumps. Based on extensive technical knowledge, we precisely select components for the specifications of a given model, ensuring lightning-fast logistics and restoring your equipment to full power and durability.


Flexible offer
Sale of new and used Caterpillar parts
In response to diverse market requirements, we sell both brand-new and used components for Caterpillar engines. Our assortment includes unused components straight from manufacturers as well as selected second-hand parts that undergo rigorous technical verification. This allows us to provide options perfectly tailored to a specific budget. We guarantee professional assistance in element selection and efficient logistics, which translates into real financial savings and minimization of work interruptions in your machine fleet.
CAT machine diagnostics
What are the typical symptoms of Caterpillar engine problems?
Malfunctioning or worn-out elements of a power unit often send signals that herald the need for service or part replacement. Usually, the operator is the first to notice a significant drop in machine power, lower work efficiency under heavy load, or uneven engine operation. One should remain vigilant and react to any disturbing changes in equipment behavior.
Components and parts for Caterpillar internal combustion engines
Durable replacement parts for CAT machines
High-class replacement parts for Caterpillar units are a guarantee of stable operation and longevity for your machine fleet. Our offer covers a full spectrum of components – from lubrication and filtration systems, through block and head elements, to precision injection systems. Every product meets rigorous technical criteria, which ensures that engine service and regeneration proceed efficiently, reliably, and without unnecessary complications.
Caterpillar oil pump – a key element responsible for lubricating all moving engine parts by generating appropriate pressure. It guarantees smooth oil circulation even during extreme operation, which directly translates to the lifespan of the entire unit.
Caterpillar oil pump shaft – responsible for transmitting drive, ensuring uninterrupted operation of the oil pump. Made of high-grade alloys, it shows great resistance to friction and overloads, protecting the engine from seizing.
Caterpillar oil pump gear – a drive component that synchronizes pump operation, ensuring stable lubricant flow. Precision-made teeth guarantee quiet operation and optimal efficiency of the lubrication system.
Caterpillar oil filter base – stabilizes the filter mounting and ensures a tight connection with the oil line. It is responsible for directing the oil flow, which is essential for effective cleaning of the lubricant from impurities.
Caterpillar oil filter housing – serves as a protective barrier for the filter element against mechanical damage. Solid construction prevents leaks and helps maintain constant pressure inside the system.
Caterpillar filter base adapter – an element that allows for precise matching of the filtration module to a specific CAT engine version. It facilitates system modernization and speeds up routine service activities.
Caterpillar oil filter cover – closes the filter assembly, guaranteeing its complete tightness and proper seating of the element. It eliminates the risk of air entering the system and oil leaks outside the engine.
Caterpillar oil pan strainer – a suction element that takes oil directly from the pan, directing it to the pump. Equipped with a pre-screen, it protects the system from drawing in larger deposits and impurities.
Caterpillar oil pickups – work with the pump, ensuring it has constant access to fresh oil from the bottom of the pan. Their high tightness is a necessary condition for maintaining proper engine pressure.
Caterpillar oil suction tube – a line transporting oil, resistant to high temperatures and vibrations occurring during operation. Any leak on this element could lead to dangerous drops in lubrication pressure.
Caterpillar engine breather – a crankcase ventilation system that removes excess exhaust gases. It protects engine seals from being pushed out and helps maintain optimal internal pressure.
Caterpillar oil separator – cleans gases from the breather of oil particles before they are discharged. This reduces excessive oil consumption and prevents contamination of the intake system and turbocharger.
Caterpillar piston cooling nozzle – a precision cooling element that directs oil to the underside of the piston. It effectively lowers the operating temperature of the piston system, protecting it from overheating and deformation.
Caterpillar oil nozzle – delivers lubricant to the most thermally and mechanically stressed points of the engine. It provides an oil film where friction is greatest, extending trouble-free operation time.
Caterpillar crankshaft – the heart of the mechanical system, converting combustion energy into rotational motion. It requires the highest manufacturing precision and perfect balance to withstand the massive loads generated by CAT machines.
Caterpillar main bearings – sleeve bearings supporting the crankshaft in the block. They reduce friction and absorb dynamic forces, and their high quality is key to quiet and long engine operation.
Caterpillar connecting rod bearings – key links connecting the connecting rods with the shaft. They must work in impeccable lubrication conditions to effectively transfer combustion energy to the drive system.
Caterpillar thrust bearings – stabilize the crankshaft along the engine axis, eliminating dangerous axial play. They protect the block and shaft structure from premature mechanical wear.
Caterpillar shaft gear – a drive output element for the timing and accessories. Its durability determines the precise synchronization of all processes occurring inside the power unit.
Caterpillar shaft flange – a precision connection between the shaft and the flywheel. It is responsible for reliable torque transfer, requiring exceptional resistance to shearing and vibrations.
Caterpillar engine block – the skeleton of the entire unit, in which all key components are seated. Made of durable castings, it ensures dimensional stability and resistance to massive pressures.
Caterpillar cylinder liner – a replaceable cylinder surface on which piston rings work. Resistant to wear, it guarantees optimal compression and ease of engine regeneration during an overhaul.
Caterpillar repair kit – a complete package (piston, liner, rings) enabling quick restoration of cylinder parameters. This is an economical and reliable solution during general engine inspections.
Caterpillar engine head – closes the cylinders and houses the timing and injection systems. It is responsible for efficiently filling chambers with air and removing exhaust gases, which determines machine performance.
Caterpillar intake and exhaust valves – control the flow of media in the cylinders. Made of heat-resistant alloys, they must maintain tightness even at extremely high operating temperatures.
Caterpillar head bolts – fastening elements that must withstand massive tensile forces. They guarantee constant pressure of the head to the block, preventing gasket damage and leaks.
Caterpillar piston – receives fuel combustion energy, working under massive pressure conditions. Its geometry and protective coatings are crucial for the thermal efficiency of the engine.
Caterpillar piston rings – a sealing set that separates the combustion chamber from the crankcase. They ensure proper compression and precise oil scraping from the liner surface.
Caterpillar connecting rod – an element connecting the piston with the crankshaft, made of forged steel with increased strength. It transfers massive forces, requiring perfect coaxiality and balance.
Caterpillar flywheel – accumulates energy and smooths engine operation. It ensures smooth operation at low RPM and enables effective drive transmission to the gearbox or pumps.
Caterpillar ring gear – a toothed ring on the flywheel, essential for engine starting. Resistance to starter pinion impacts guarantees a reliable start in all conditions.
Caterpillar camshaft – precisely manages valve opening times. Its cams must be resistant to wear to maintain factory power parameters and low fuel consumption.
Caterpillar timing gear – transfers drive to the shaft, ensuring perfect coordination of pistons with valves. Solid manufacturing eliminates the risk of timing skips and serious failure.
Caterpillar gasket set – a full set of seals necessary when assembling the engine. It guarantees system hermeticity, protecting against fluid mixing and pressure loss.
Caterpillar head gasket – the most important sealing element isolating combustion chambers. Resistant to extreme temperatures and pressure spikes, it protects engine integrity.
Caterpillar injector – a precision component dosing fuel under massive pressure. It determines combustion cleanliness, machine dynamics, and diesel fuel economy.
Caterpillar injection nozzle (atomizer) – the element responsible for perfect fuel mist in the cylinder. Its efficiency is a guarantee of no smoking and full power for your CAT machine.
CAT construction machinery
A global foundation for modern construction
Caterpillar is a global powerhouse in the production of construction and industrial equipment, associated with exceptional reliability, modern technology, and the highest technical culture. For decades, the brand has provided advanced machines – including legendary excavators, loaders, dozers, and haulers – which set the standard for efficiency, durability, and safety on every construction site.
The Caterpillar philosophy goes beyond machine production, placing great emphasis on the full availability of components and parts for CAT power units. Thanks to this, users can easily service their equipment, ensuring its long-term efficiency and full readiness for work. Our offer includes both original Caterpillar parts and proven replacements, enabling a perfect match of elements to the technical specifications of a specific model.
Through continuous development, restrictive quality standards, and extensive logistics facilities, Caterpillar remains a symbol of professionalism and efficiency in the heavy sector, and its components effectively support the implementation of the most demanding investments around the globe.


Global delivery reach
Fast transport of parts for your machine
At Wibako, we combine the sale of high-class components with professional logistics service. We carry out shipments within the country, to all European countries, and to non-European markets, guaranteeing efficient and safe delivery of ordered components straight to the customer's hands.
Our logistics department consists of experts with many years of experience in planning and supervising transport processes. We provide full flexibility – from express courier parcels and road transport to air and sea logistics. Thanks to constant cooperation with leaders in the forwarding industry, we offer our contractors attractive rates and a guarantee of meeting agreed deadlines.
We place great emphasis on packaging standards. Every item – regardless of whether it is a small gasket or a component of unusual dimensions – is professionally secured against damage. We also comprehensively support export processes, preparing the necessary customs documentation and completing all official formalities.
Our own fleet for oversized transport allows us to quickly transport large components or complete construction machines. We approach each order in a personalized way, focusing on reliability.
Where can I find the serial number (PIN) of a CAT machine?
On the metal identification plate on the frame (often near the cab or the articulation joint) and on the engine block. In newer machines, you can also find it in the on-board monitor menu.
What is a Prefix in Caterpillar numbering?
These are the first 3 characters of the serial number. They identify the machine model and configuration – they are essential for correctly selecting any part in the parts catalog.
What are CAT Reman parts?
These are factory-remanufactured parts by Caterpillar. They are approximately 40-50% cheaper and carry the same warranty as new parts, but they require the return of the old, used part (the core).
What is the difference between the CAT Classic line and Premium parts?
The Classic line is dedicated to older machines (out of the warranty period). These are standard-performance parts at a lower price, whereas Premium parts are original equipment (OE) used for initial assembly.
How often should filters be replaced in CAT machines?
The standard service interval is typically 500 operating hours for oil and fuel filters, unless the monitoring system (Product Link) indicates otherwise.
How to measure the wear of a track chain?
You should measure the distance between the pins (track pitch) using a caliper and compare it with the CAT wear chart for the specific model.
Do track rollers from other excavator brands fit CAT machines?
Usually not. Despite a similar appearance, Caterpillar uses specific bolt patterns and mounting diameters to ensure perfect lubrication and sealing.
Passen Laufrollen von Baggern anderer Marken an CAT-Maschinen?
Normalerweise nicht. Trotz eines ähnlichen Aussehens verwendet Caterpillar spezifische Lochkreise und Passungsdurchmesser, um eine ideale Schmierung und Abdichtung zu gewährleisten.
Why are CAT HEUI injectors so sensitive to oil quality?
Because they are actuated by hydraulic/engine oil pressure. Contaminated oil causes the precision valves inside the injector to seize.
How to check if a CAT turbocharger is suitable for remanufacturing?
Check the radial and axial play of the impeller. If the blades are rubbing against the housing or if there is a lot of fresh oil in the intake, the turbo requires replacement or a Reman repair.
What is the difference between an Advanced Efficiency fuel filter and a standard one?
Advanced filters have a denser fiber weave that captures smaller particles (down to 2 microns), which is essential for engines meeting Stage V emission standards.
Wo befindet sich der Ladedrucksensor beim C6.6-Motor?
Normalerweise am Ansaugkrümmer. Sein Defekt führt zu einem plötzlichen Leistungsverlust und schwarzem Rauch aus dem Auspuff.