BMW S65B40A Engine | 4.0L V8 for M3 E90/E92

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.