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S85 Engine

The S85 engine is renowned as one of the most impressive mechanically minded naturally aspirated engines in the history of automobiles which is the screaming 5.0L V10 engine that is the core of the E60 M5 and E63/E64 M6. Being the only BMW with a V10, it was designed with direct experience given by the company Formula 1 experience, heavily inspired by the P84/5 racing engine. It has a huge 92mm bore and a short 75.2mm stroke enabling it to rev to a stratospheric 8,250 RPM redline and generate 500 hp (373 kW) and 384 lb-ft of torque with no forced induction.

39 in stock

Price range: $8,000.00 through $16,000.00

The prices are exclusive of taxes and shipping. The price may vary depending upon the miles and year of manufacturing.

Additional Information

Brand

BMW

Conditions

Remanufactured, Used

Miles

70000-130000

Year Compatibility

2005–2010

Verified

Tried & Tested

Warranty

Up to 3 Months

What we offer

Its motorsport heritage can be seen in its razor-sharp response utilized by 10 individual throttle bodies (ITBs), its quasi- Dry sump lubrication system to cope with high-G cornering, and its advanced ionic current knock sensing system which reads the quality of combustion directly through the spark plugs.The S85 is also known to have severe maintenance issues that require preventive replacement of rod bearings and throttle actuators or will result in a severe failure.

Variant

P400
The default driving mode, limiting engine output to approximately 394 hp (294 kW) to provide a smoother and more predictable driving experience. Throttle response is softened, torque delivery is progressively ramped, and drivetrain behavior is tuned for stability and comfort. This mode is ideal for daily driving, urban environments, and low-traction conditions, emphasizing efficiency, refinement, and reduced mechanical stress.

P500
A performance-focused mode that unlocks the engine’s full 500 hp capability. Throttle mapping is recalibrated to deliver stronger and more immediate acceleration, while engine and transmission responses are sharpened to support dynamic driving. This mode balances high output with controllability, making it suitable for spirited road use and high-speed cruising.

P500S
The most aggressive driving mode, delivering the nearlyabout 500 hp with a significantly more sensitive throttle response. Power is applied with minimal delay, and engine responsiveness is maximized for rapid acceleration and precise control. Designed for performance-oriented driving, this mode enhances driver engagement and is best suited for track use or experienced drivers seeking maximum responsiveness and performance.

Frequently Asked Questions

  1. What vehicles use the S85 engine?

    The BMW S85 engine was used exclusively in the E60 M5 and E63/E64 M6 models from 2005–2010.

  2. Are your S85 motors tested?

    Yes. Every used S85 motors undergoes compression, leak, and performance testing before shipment.

  3. Do you offer a warranty?

    Absolutely — all S85 engines include a standard limited warranty for customer peace of mind.

  4. Is the S85 engine reliable?

    When properly maintained, the S85 offers outstanding longevity. We recommend replacing rod bearings and VANOS components during installation for optimal performance.

  5. Are these engines ready to install?

    Yes. All units are cleaned, inspected, and prepped for direct installation into compatible BMW M5 or M6 chassis.

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S85 EngineS85 Engine
Price range: $8,000.00 through $16,000.00Select options