Looking for a Used BMW S63 Engine for Sale? Here’s What You Should Know First

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BMW S63 Engine

So, your M5 or X5M just gave you the dreaded warning light, and you're facing the nightmare scenario: your BMW S63 engine is on its way out. Before you panic or drain your savings on a brand-new replacement, take a breath. There are better, smarter options out there, especially if you know where to look and what to watch for.

Whether you're hunting for a reliable S63 engine for sale or just doing some research, this guide will give you the heads-up you need. We’ll also talk about why MT Auto Parts might just be the best starting point for getting your hands on a used BMW S63B44B engine without the stress.

What Is the BMW S63 Engine?

If you’re not deep into BMW-talk, here’s a quick refresher. The S63 engine is BMW’s high-performance, twin-turbocharged V8 that powers monsters like the M5, M6, X5M, and X6M. It's based on the N63 block but seriously upgraded.

This isn’t your average engine. The BMW S63B44B (specifically in F90 M5s and newer models) delivers explosive power and brutal acceleration. It’s packed with tech, including variable valve timing, direct injection, twin-scroll turbos, among others. 

However, with all that performance comes complexity, and with complexity, sometimes reliability issues.

Why Do People Look for Used S63 Engines?

Let’s not sugar-coat it; replacing a BMW S63 engine isn’t cheap. A brand-new one from the dealership can set you back more than £25,000, including labour, depending on your location and model.

That’s why many owners turn to the used parts market. A solid, used S63 engine for sale from a reputable breaker like MT Auto Parts can easily save you thousands. What if it’s been tested, verified, and low-mileage? Even better.

Common Pitfalls When Buying an S63 Engine

Before you rush into buying that used S63B44B motor, here are a few red flags to look out for:

  • No compression or leak-down test results: These tests are essential for any high-performance engine.

  • Missing parts: Is it a bare block or a complete unit? Does it include turbos, manifolds, and sensors? You need to check these. 

  • Salvage engines: Some units might be flood-damaged or pulled from heavily crashed cars. Be on the lookout. 

Reputable sellers like MT Auto Parts always thoroughly test and inspect their engines and are transparent about mileage, condition, and history. That peace of mind is worth a lot.

What Makes the S63B44B Unique?

Among all the S63 engine variants, the S63B44B is one of the most advanced. It is found in newer F90 M5s and competition models. It includes:

  • Upgraded turbos

  • Stronger internals

  • Dual injection system

  • Lightweight construction

Due to its newer tech, it also comes with a higher price tag, used or not. That’s why sourcing from a trusted BMW breaker like MT Auto Parts ensures you're not paying top money for bottom-tier quality.

Why MT Auto Parts Is the Smarter Choice

Shopping around for a used BMW S63 engine can be a minefield. Shady Facebook ads, sketchy sellers; it’s all out there. That’s why so many BMW drivers choose MT Auto Parts. Here’s why we stand out:

  • BMW Specialists: As BMW  specialists, we know what we’re selling and won’t feed you with half-baked information.

  • Tested and Verified: All S63B44B units and other parts are inspected, tested, and often include documentation.

  • VIN Matching Service: If you’re not sure what engine fits? We’ll match it up to your chassis.

  • Nationwide Delivery: Wherever you are in the UK, we can get the part to your door quickly and safely.

We’re not just selling engines. MT Auto Parts can source additional components, from ECUs to turbos, to make your rebuild way smoother.

Wrapping Up

Buying a used BMW S63 engine is a serious investment, but it doesn’t have to be a stressful one. If you do your homework, buy from a trusted source like MT Auto Parts, and understand the basics, you can save thousands and get your M car back on the road.

From seasoned BMW enthusiasts to first-time M5 owners, going the used route is very beneficial when done right. Just remember: it's not always about finding the cheapest deal, but the right deal, and that’s what MT Auto Parts is all about.

FAQs

1. What BMW models use the S63 engine?

You can find the S63 engine in BMW M models like the M5, M6, X5M, and X6M. The S63B44B variant is used in newer F90 M5s.

2. Is the S63 engine reliable?

When well-maintained, yes. But they are complex engines. Regular oil changes, quality fuel, and timely servicing are essential for long life.

3. How can I be sure I’m buying a good used S63 engine?

Always ask for testing proof and VIN compatibility. Reputable sellers like MT Auto Parts provide full transparency.

4. Can MT Auto Parts help with engine fitting or just supply?

While we specialise in parts supply, we can often recommend trusted mechanics or garages to handle your S63 engine fitting locally.
Location: Manchester, UK

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