Why Experienced Mechanics Prefer OEM Parts Over Cheap Copies
- RALPH COPE
- Aug 4
- 5 min read
Walk into any busy workshop and ask the mechanics one simple question:
"If you were repairing your own excavator, would you fit a cheap aftermarket part or a refurbished OEM component?"
More often than not, you'll get the same answer.
"I'd rather use the OEM part."
Why?
Because experienced mechanics understand something that many equipment owners don't.
The cheapest part on the shelf is rarely the cheapest part over the life of the machine.
Professional mechanics don't just think about today's repair bill. They think about reliability, fitment, durability, future maintenance, and ultimately, the reputation that comes from doing a job properly the first time.
At Vikfin, we've worked with hundreds of mechanics, fleet managers and workshop owners across South Africa. Time and again, we've seen seasoned professionals choose quality refurbished OEM parts over low-cost copies—and for good reason.
Let's explore why.
Experience Changes the Way You Buy Parts
When someone is new to maintaining heavy equipment, it's easy to compare parts based on price alone.
After all, two hydraulic cylinders can look almost identical.
Two final drives may have similar dimensions.
Two water pumps may bolt onto the same engine.
So why spend more?
Because appearances can be deceiving.
Experienced mechanics know that what you can't see often matters more than what you can.
The quality of the casting.
The precision of the machining.
The hardness of the gears.
The quality of the bearings.
The metallurgy of the shafts.
The design tolerances.
These are the details that determine whether a part lasts for years—or fails after a few hundred hours.
OEM Parts Were Designed for the Machine
Original Equipment Manufacturer (OEM) parts were engineered specifically for that excavator.
Every dimension, every tolerance and every material specification was chosen to work as part of a complete system.
That means:
Correct alignment
Proper hydraulic flow
Accurate pressure ratings
Designed load capacity
Proven compatibility
Cheap copies often aim to look the same.
The problem is that looking the same isn't the same as performing the same.
Precision Matters
Modern excavators are incredibly sophisticated machines.
Hydraulic systems operate at extremely high pressures.
Final drives transmit enormous torque.
Swing systems handle massive side loads.
Even tiny manufacturing inaccuracies can create problems.
A poorly machined housing can allow premature seal failure.
An incorrectly hardened gear can wear rapidly.
A shaft that's only fractions of a millimetre out of tolerance can shorten bearing life dramatically.
Experienced mechanics know these small differences can become very expensive.
Better Materials Mean Longer Life
One of the biggest differences between quality OEM components and many inexpensive copies is the material used during manufacture.
OEM manufacturers invest heavily in:
Heat treatment
Metallurgical testing
Material selection
Quality control
Fatigue testing
These processes cost money.
That's one reason genuine OEM components are more expensive when bought new.
But those same high-quality materials are exactly why refurbished OEM parts make so much sense.
You're buying a component that was built to last from the very beginning.
Refurbished OEM Is Not the Same as Second-Hand
This is one of the biggest misconceptions in the industry.
Many people assume a refurbished part is simply removed from one machine and installed into another.
That's not how reputable refurbishment works.
At Vikfin, every component is carefully assessed before it is offered for sale.
Depending on the component, the refurbishment process may include:
Complete cleaning
Detailed inspection
Dimensional measurement
Replacement of seals and bearings
Repair of damaged components
Machining where required
Functional testing
Final quality inspection
The goal is simple:
Deliver a reliable OEM component that provides excellent service at a fraction of the cost of buying new.
Mechanics Hate Doing the Same Job Twice
There's an old saying in the workshop:
"The expensive repair is the one you have to do twice."
Every mechanic knows the frustration.
A cheap replacement part is installed.
The machine leaves the workshop.
A few weeks later, it's back.
Now the technician has to:
Remove the failed part
Diagnose the issue again
Fit another replacement
Test the machine
Explain the failure to the customer
Nobody wins.
The customer loses valuable uptime.
The workshop loses productivity.
The mechanic loses confidence in the part.
That's why experienced professionals prefer components they can trust.
Downtime Costs More Than Parts
Imagine saving R8,000 by fitting a cheap copy.
Now imagine that part fails a month later.
The excavator stops on site.
Operators are standing idle.
Dump trucks are waiting.
Projects are delayed.
Customers become frustrated.
The original saving disappears almost instantly.
Experienced mechanics understand that reliability is often far more valuable than the initial purchase price.
Fitment Should Never Be a Guessing Game
One of the hidden costs of inferior replacement parts is poor fitment.
Bolt holes don't align perfectly.
Hydraulic ports are slightly different.
Mounting brackets require modification.
Pins don't fit properly.
Seals don't seat correctly.
Hours that should be spent completing repairs are wasted making components fit.
OEM parts are designed to fit properly.
That saves time.
And time is money.
Safety Is Non-Negotiable
Excavators work in demanding environments.
They lift heavy loads.
They operate on steep slopes.
They work around people, vehicles and expensive infrastructure.
Critical components such as boom cylinders, slew systems and final drives must perform exactly as intended.
Experienced mechanics know that quality isn't simply about reliability.
It's also about safety.
Compromising on critical components can introduce unnecessary risk.
Why Fleet Managers Choose Refurbished OEM Parts
Fleet managers aren't responsible for one excavator.
They're responsible for dozens—sometimes hundreds—of machines.
Their priorities are clear:
Maximum uptime
Predictable maintenance costs
Reliable repairs
Fast availability
Long service life
That's why many successful fleet operators actively seek out quality refurbished OEM parts.
They know they're getting components built to OEM standards without paying the premium price of brand-new parts.
The Vikfin Difference
At Vikfin, we're passionate about quality.
We don't believe customers should have to choose between affordability and reliability.
By dismantling excavators and carefully refurbishing genuine OEM components, we give our customers the best of both worlds.
Our stock includes quality parts for leading brands such as:
Caterpillar
Komatsu
Volvo
Hitachi
Doosan
JCB
Sumitomo
Whether you're looking for:
Final drives
Slew motors
Hydraulic cylinders
Engines
Valve banks
Radiators
Undercarriage components
Wiring harnesses
Quick couplers
...our experienced team can help you find the right solution quickly.
Buy Once. Buy Right.
There's another saying that's stood the test of time:
"The bitterness of poor quality remains long after the sweetness of a low price is forgotten."
In the earthmoving industry, that couldn't be more true.
Cheap copies may save money today.
But if they fail early, fit poorly or compromise reliability, the long-term costs can be enormous.
Experienced mechanics know this.
That's why they continue to place their trust in quality OEM components.
Final Thoughts
When it comes to excavator repairs, experience teaches one valuable lesson:
Quality pays for itself.
That's why the professionals who maintain heavy equipment every day consistently choose OEM components whenever possible.
Refurbished OEM parts combine proven engineering, excellent value and dependable performance.
They help reduce downtime.
They improve reliability.
And they give owners confidence that the repair has been done properly.
At Vikfin, we're proud to help our customers keep their machines working with quality refurbished OEM excavator parts they can trust.
Trust the Parts Trusted by Professionals
When your excavator needs a replacement component, don't gamble on quality.
Choose genuine refurbished OEM parts from Vikfin and benefit from proven reliability, expert advice, competitive pricing and fast nationwide delivery.
Your excavator works hard.
Make sure the parts you install work just as hard.
Vikfin – Flexible. Fast. Friendly. Affordable.
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