BMW B58 Engine for Sale – Reconditioned, Used & Rebuilt B58 Engines
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Very few modern power plants have earned the cult following that matches what BMW's B58 engine is, which is often hailed as “BMW's best engine” by enthusiasts, tuners and reviewers alike. Pick any B58 engine review or the technical breakdown, and it is evident that those machines are known for their perfect blend of performance, refinement and engineering intelligence.
For those who are looking for a replacement BMW B58 engine, BM Engine Works sources low mileage B58 engines from all over the UK and reconditions them in house using state of the art equipment by a highly trained and experienced team of technicians. Our reconditioned BMW B58 engines contain inch perfect closed deck block, efficient high pressure fuel system and smooth turbocharged power delivery, making the B58 the best engine BMW ever produced. Our engine experts provide you with the insight you need for engine replacement, and our 25 years of experience and thousands of satisfied customers base provide you with a strong reason to try our service to find the right engine for your vehicle with absolute confidence.
If you are looking to source the correct replacement BMW B58 unit, then you must understand the essential information about its origin and its family. The engine B58 platform is built around three main variants. Gen 1 was called B58B30M0 and was found in early 340i/440i models. Then came the updated B58B30O1 / B58 TÜ1 (Gen 2) with improved cooling and emissions systems, and the latest B58B30M1 (Gen 3) featuring enhanced compression ratios and revised internal components.
Each version varies in power characteristics, turbocharger behaviour and fuel system architecture. Especially as the B58 engine turbo evolved across generations to provide smoother boost, better reliability and increased headroom for tuning. Because these differences directly affect compatibility, ECU matching and installation, choosing the right BMW engine B58 requires precision, and that’s exactly what our specialist team provides. We don’t just supply high-quality used, reconditioned and rebuilt B58 engines; we also offer a complete professional fitting service, ensuring your chosen engine variant is installed, coded and tested to BMW standards for long-term performance and reliability.
Some of the most desirable models in the BMW lineup are graced with the BMW B58 engine. From the performance-focused 3 Series 340i and M340i, to the dynamic 4 Series 440i and M440i, all the way up to the executive 5 Series 540i, grand-touring 6 Series 640i, and luxury flagship 7 Series 740i and 8 Series 840i, the B58 powers a huge portion of BMW’s modern range. Its footprint extends strongly into BMW’s SUV segment as well, including the X3, X4, X5, X6 and X7, each equipped with its own B58 calibration depending on model year, drivetrain and emissions standard.
The same power plant also drives the Z4 M40i and even the Toyota GR Supra, cementing the B58 as one of the most versatile and sought-after engines in the industry. With UK-specific variations, LCI revisions and generation differences across these vehicles, choosing the correct engine isn’t always straightforward — which is exactly why customers rely on our specialist team to supply the right B58 unit and professionally install it with precise coding and compatibility checks for flawless performance.
Party piece of the BMW B58 is the robust closed deck block that delivers exceptional strength under big boost. It features a twin scroll B58 turbocharger that provides sharp low end response and sustained top-end power, supported by an efficient water to air intercooler integrated into the intake plenum for reduced charge temperatures.
It has a bore of 82 mm, a stroke of 94.6 mm and compression ratios ranging from 11.0:1 to 10.2:1, depending on the variant, which helps the engine to combine optimal combustion efficiency with high reliability. BMW’s VANOS variable cam timing and Valvetronic variable lift systems further enhance throttle response and fuel efficiency, while the dual cooling circuits manage both cylinder head and block temperatures independently for consistent thermal stability. Gen 2, on the other hand, came with improved cooling, updated injectors, and DME 863, while Gen 3 featured stronger internals, revised turbo geometry, and newer MG1 DMEs to support higher factory outputs.
A brief B58 engine review consistently highlights why many enthusiasts consider it the BMW B58 best engine. They consider it a huge step forward from the N55 and a far more reliable package than the high maintenance N54. BMW has produced a stellar engine in B58 that offers smooth, refined power delivery, rich straight six sound, and responsive turbo performance. On top of it, strong fuel efficiency and exceptional tuning headroom with stock internals make it an all time favourite. However, this engine is not without its flaws, and issues can arise that may push its owners to search for a BMW B58 for Sale.
Common BMW engine B58 failure signs include rough idle, smoke, coolant loss, or boost irregularities, usually linked to PCV system faults, minor coolant circuit leaks, HPFP failures, turbo waste gate play, or head-gasket stress on heavily tuned setups, while ageing VANOS solenoids and crankcase ventilation problems can also necessitate repair or full engine replacement.
There comes a time when repairs won’t cut it, and an engine replacement is what you need. BM Engine Works offers complete B58 engine replacement solutions that feature used, reconditioned, and fully rebuilt options to suit the budget and requirements of a varied type of customer. Our team of technicians source low mileage used engines from all over the UK and tests them comprehensively. Our used engines are ideal for quick, cost effective replacements, while our reconditioned B58 units undergo a complete rebuild process where they are fully stripped, inspected, and rebuilt using OEM quality components.
For those looking for the closest thing to factory fresh new B58 engine, we offer a rebuilt engine that delivers zero mile performance and long term reliability. Customers searching for a BMW B58 engine for sale can choose a fully managed supply-and-install solution for maximum convenience and peace of mind.
Engine replacement is a huge undertaking, and choosing the right specialist is as important as choosing the right engine. You need an expert place that operates a dedicated BMW focused workshop and is staffed by experienced technicians who work exclusively on BMW power plants. At BM Engine Works, this is exactly what you get as we ensure every replacement is carried out with precision and confidence.
Our technicians use OEM BMW diagnostic and installation tooling, follow factory procedures, and understand every intricate detail about all the B58 engine generations. This expertise allows us to offer fast turnaround times without compromising quality, whether you need a direct replacement or a fully managed upgrade. Backed by genuine customer reviews and a proven track record, we supply everything from standalone engines to crate B58 engine and fitting packages, giving you a single, trusted solution from sourcing to installation, coding and final road testing, all designed to get your BMW back to peak performance with complete peace of mind.
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