OEM BMW E30 M3 S14 Engine / Motor

Genuine BMW S14 high-revving 4-cylinder engine for the iconic E30 M3.

This legendary DOHC 16-valve powerplant is the heart of the original E30 M3 and one of the most celebrated engines in BMW Motorsport history. Known for its free-revving nature, sharp throttle response, and distinctive high-pitched exhaust note, the S14 delivers the authentic performance character that made the E30 M3 a legend.

Key specifications

• Engine code: S14 (S14B23 / S14B25 depending on exact variant)
• Configuration: Inline-4, DOHC, 16-valve
• Displacement: 2.3 L (early) or 2.5 L (later Evolution models)
• Power: approximately 195–238 hp depending on version and market
• Distinctive blue “BMW M Power” valve cover (as shown)
• Individual throttle bodies on many versions

Ideal as a complete replacement engine or a foundation for a high-quality rebuild/swap into an E30 M3 or compatible chassis. A properly maintained or rebuilt S14 remains one of the most exciting engines ever fitted to a road car.

Fitment
BMW E30 M3 (1986–1991) — verify exact variant (2.3 L or 2.5 L), market, and accessories such as intake, exhaust manifolds, sensors, and wiring for your specific application.

Perfect for owners seeking a genuine OEM S14 engine to restore or upgrade a classic E30 M3.