Description BMW S65B40A Engine – 4.0L Naturally Aspirated V8 (M3 E9X Series) The BMW S65B40A engine is a 4.0-liter naturally aspirated V8, hand-built for the BMW M3 E90 sedan, E92 coupe, and E93 convertible (2007–2013). Developed by BMW M GmbH, this engine draws its DNA directly from Formula 1–inspired engineering and is one of the last high-revving V8s in BMW’s iconic M lineup. Producing 414 horsepower (309 kW) at 8,300 RPM and 400 Nm of torque, the S65B40A uses individual throttle bodies, double VANOS, and a lightweight forged crankshaft, delivering razor-sharp throttle response and a spine-tingling redline of 8,400 RPM. The engine’s race-inspired design offers: Unmatched naturally aspirated sound and feel High-rev performance with instant power delivery Balanced weight distribution due to compact V8 layout Motorsport pedigree with precision German engineering It’s widely celebrated among enthusiasts for its reliability (when properly maintained), unique V8 character, and visceral driving experience. Key Specifications: Engine Code: S65B40A Displacement: 4.0L (3999cc) Configuration: V8, DOHC, 32-valve Fuel Type: Petrol Induction: Naturally Aspirated Valvetrain: Double VANOS Individual Throttle Bodies Power Output: 414 HP (309 kW) / 400 Nm Applications: BMW M3 E90, E92, E93 (2007–2013) Every engine is tested for compression, fully cleaned, and comes with a startup warranty. Optional components like ECU, wiring loom, throttle actuators, and intake manifold are available. Global delivery is fast and secure. Bring back the raw, analog driving feel of a true M car with the iconic BMW S65B40A V8 engine—engineered to rev, built to thrill.
