10 Car Parts You Should Always Buy Second Hand to Save Money

June 24, 2026

Car repairs can get expensive fast. Many people automatically ask for new parts because they think used parts will not last. That is not always true.

Many components removed from damaged or written-off vehicles are still in good working condition. They can cost much less than new replacements and often come from the same manufacturer that made the original part on your car.

At AllGoodParts, we regularly see customers spend more than they need to simply because they do not know which parts are safe and practical to buy second hand.

For drivers looking for used car parts in Melbourne, knowing which used components are worth buying can make a big difference to repair costs.

New vs Second Hand Parts

Before looking at specific parts, here is a simple comparison.

Factor	New Parts	Second Hand Car Parts
Purchase price	Higher	Usually lower
Availability for older cars	Sometimes limited	Often available
Original manufacturer part	Not always	Often yes
Suitable for everyday repairs	Yes	Yes for many parts
Replacement cost	Higher	Lower

Many second hand car spares come from vehicles involved in accidents where only part of the vehicle was damaged. Other components may still be perfectly usable.

10 Second Hand Car Parts That Are Worth Buying

1. Engines

A used engine can save thousands of dollars compared to buying a new one. This is one of the most common purchases from car wreckers. A replacement engine often makes sense when:

An engine has failed
Repair costs are too high
The vehicle is older
The rest of the vehicle is still in good condition

At AllGoodParts, used engines are inspected and matched to the correct vehicle before sale. Engine details are checked carefully to help reduce compatibility issues.

2. Doors

Doors are one of the best parts to buy second hand. Most replacement doors come from vehicles that were damaged elsewhere.

Buying a used door can help you avoid expensive new panel costs and paint work. Always check:

Colour match
Model compatibility
Condition of mirrors and trims

3. Headlights

Modern headlights can be surprisingly expensive. A second hand replacement often costs much less than a new unit.

The important thing is to check for:

Cracks
Water damage
Broken mounting points

Most reputable suppliers inspect these before listing them for sale.

4. Tail Lights

Tail lights are another common replacement item. Minor accidents often damage a single light.

Buying used can be a practical option because the part typically does not experience heavy wear under normal driving conditions.

5. Bonnets

A bonnet can be expensive to replace. Many second hand bonnets come from vehicles that have suffered rear-end damage while the front section remained untouched.

Always check:

Panel condition
Paint condition
Correct model fitment

6. Bumpers

Front and rear bumpers are among the most requested spare car parts.

A second hand bumper can save a significant amount compared to buying new.

Some customers buy a bumper in the correct colour and avoid repainting costs altogether.

7. Side Mirrors

Side mirrors are damaged more often than people realise. Parking accidents and narrow streets cause plenty of broken mirrors.

Used replacements are usually much cheaper than new units, especially on newer vehicles with built-in indicators or cameras.

8. Gearboxes

A gearbox replacement can be expensive. A properly inspected used gearbox often provides a more affordable repair option.

Before buying, ask about:

Vehicle compatibility
Kilometres
Warranty
Inspection process

This is where buying from an established supplier makes a difference.

9. Alternators and Starter Motors

These parts wear out over time. Many used alternators and starter motors are removed from vehicles that were written off for reasons unrelated to mechanical problems.

They are commonly tested before sale.

That extra check gives buyers more confidence when purchasing used auto parts.

10. Wheels and Rims

A single damaged wheel can create a problem. Buying one used wheel often costs much less than replacing an entire set.

Many customers choose second hand wheels when they need a matching replacement after hitting a pothole or kerb.

Always check:

Size
Offset
Stud pattern
Overall condition

What Makes a Used Part Worth Buying?

Not every used part is worth purchasing. Good suppliers check parts before sale and confirm compatibility.

At AllGoodParts, parts are removed from vehicles, inspected, identified correctly, and stored properly before being listed. You can check our YouTube channel for a detailed inspection and dismantling process.

That process helps reduce common problems such as incorrect fitment and damaged components.

When buying second hand car spares, always ask:

Has the part been inspected?
Does it match my vehicle?
Is there a warranty?
Can the supplier confirm compatibility?

Those questions usually tell you a lot about the quality of the supplier.

When New Parts May Be the Better Option?

Sometimes a new part makes more sense. Examples include:

Brake pads
Filters
Belts
Wiper blades
Spark plugs

These are wear items that are generally replaced with new components.

For larger components such as engines, doors, panels, and gearboxes, second hand options are often worth considering first. That is why many customers start by checking available used engines and other major components before committing to expensive repairs.

Why Do Many Drivers Choose Used Parts?

Most people simply want their vehicle back on the road without spending more than necessary.

A good used part can do that.

The key is buying from a supplier that knows the vehicle, checks the part, and confirms compatibility before the sale.

We see customers every week who save money by choosing used components instead of ordering new replacements that cost much more.

That is one reason the demand for second hand car parts continues to grow across Australia.

Final Thoughts

Not every repair needs a brand-new part. Engines, gearboxes, doors, lights, mirrors, and many other components can often be replaced with quality second-hand parts at a lower cost.

The important thing is buying from a supplier that checks parts properly and confirms they match your vehicle. For drivers looking to buy used car parts in Australia, working with an experienced supplier can help you find the right replacement part without paying more than necessary.