# 7 Things To Look For When Buying a Used Engine
Buying a **used engine** can be one of the smartest ways to get your vehicle back on the road without spending a fortune. Whether your engine failed unexpectedly or you’re planning a replacement ahead of time, choosing the right used engine is critical to avoiding costly mistakes.
At **Moon Auto Parts**, we help customers find dependable used engines every day. To help you make a confident purchase, here are the seven most important things to look for when buying a used engine.
## 1. Vehicle Compatibility
Before anything else, make sure the used engine is an exact match for your vehicle’s year, make, model, and engine type. Even small differences in engine codes or configurations can lead to installation problems.
Reputable suppliers like Moon Auto Parts verify compatibility to ensure the used engine fits correctly and functions as intended.
## 2. Mileage on the Used Engine
Mileage plays a major role in how long a used engine will last. Lower-mileage engines typically offer better reliability and longer service life.
As a general rule:
1. Look for a **used engine** with under 100,000 miles
1. Avoid engines with excessive wear unless the price and vehicle usage justify it
Lower mileage doesn’t guarantee perfection, but it significantly improves your odds of long-term performance.
## 3. Engine Testing and Inspection
Never buy a **[used engine](https://moonautoparts.com/engines)** that hasn’t been inspected and tested. Just because an engine ran when it was removed doesn’t mean it’s still in good condition.
Quality used engines should be:
1. Inspected for internal and external damage
1. Checked for compression and leaks
1. Verified to be free of major mechanical issues
At Moon Auto Parts, every used engine goes through a quality inspection before being added to inventory.
## 4. OEM vs Aftermarket Engines
An OEM (Original Equipment Manufacturer) used engine is designed specifically for your vehicle, making installation smoother and performance more reliable.
While aftermarket engines may be cheaper, OEM used engines generally:
1. Fit better
1. Last longer
1. Maintain factory performance standards
Choosing an OEM used engine reduces the risk of compatibility and reliability issues.
## 5. Warranty Coverage
A warranty is one of the most important protections when buying a used engine. Without it, you’re taking a major risk.
Look for:
1. A minimum 3-month warranty
1. Ideally a 6-month warranty or longer
Moon Auto Parts includes a **4 year warranty** on used engines, giving customers peace of mind if an issue arises after installation.
## 6. Seller Reputation
Not all sellers are equal. Buying from a reputable used auto parts supplier greatly reduces the risk of ending up with a faulty engine.
Before purchasing a used engine:
1. Check customer reviews
1. Look for years of industry experience
1. Avoid sellers who won’t provide details about the engine’s history
Moon Auto Parts has built a reputation for supplying quality used engines backed by testing and warranties.
## 7. Total Cost (Not Just the Price)
The cheapest used engine isn’t always the best deal. Consider the total cost, including:
1. Shipping
1. Installation labor
1. Potential replacement costs if the engine fails
Paying slightly more for a tested used engine with a warranty often saves money in the long run by avoiding repeat labor and downtime.
## Why Buy a Used Engine from Moon Auto Parts?
Choosing the right used engine doesn’t have to be complicated. **[Moon Auto Parts](https://moonautoparts.com)** makes the process easy by offering:
1. Quality-tested used engines
1. Accurate vehicle matching
1. Competitive pricing
1. A 4 year warranty
1. Nationwide shipping
If you’re in the market for a reliable used engine, working with a trusted supplier can make all the difference.
## Final Thoughts
A **used engine** is a cost-effective solution when chosen carefully. By focusing on compatibility, mileage, testing, warranty, and seller reputation, you can confidently purchase a used engine that delivers performance and value.
**Moon Auto Parts** is here to help you find the right used engine and get your vehicle back on the road with confidence.
**Visit : [How To Find Quality Used Engines](https://useengine.hashnode.dev/how-to-find-quality-used-engines)**