BMW S14B23 Engine & Getrag 5-Speed Gearbox | Complete Drivetrain Package | E30 M3 | Rebuilt | 2.3L Inline-Four | 70K Miles
Bring the heart of the legendary BMW E30 M3 back to life with this complete BMW S14B23 engine and Getrag 5-speed manual gearbox package.
This authentic 2.3-liter inline-four S14B engine — the same powerplant that defined BMW’s DTM dominance — was removed from an E30 M3 showing just under 70,000 miles, then professionally rebuilt in 2024 by the seller to preserve its original performance and integrity.
This BMW 2.3-liter S14B inline-four and Getrag five-speed manual gearbox were removed from an E30 M3 that reportedly showed just under 70k miles, and the removed parts were acquired by the seller in 2024. The seller rebuilt the engine. The engine features a cast-iron block, an aluminum cylinder head, dual overhead camshafts, and a black-finished intake plenum with “BMW M Power” lettering. The package also includes the gearbox, differential, driveshaft, and Bosch Motronic control module that were reportedly sourced from the same car.
Technical Specifications
| Specification | Details |
|---|---|
| Engine Identification | BMW S14B23 |
| Configuration | Inline-Four, Naturally Aspirated |
| Displacement | 2.3 Liters (2302 cc) |
| Power Output | 192–215 HP (depending on market spec) |
| Torque | 170 lb-ft (approx.) |
| Compression Ratio | 10.5:1 |
| Fuel System | Bosch Motronic Electronic Fuel Injection |
| Cylinder Head | Aluminum, DOHC – 16 Valves |
| Engine Block | Cast Iron |
| Gearbox | Getrag 5-Speed Manual Transmission |
| Driveshaft | Included |
| Differential | Included (matching set) |
| ECU | Bosch Motronic Control Unit included |
| Mileage | ~70,000 miles (prior to removal) |
| Rebuild Status | Rebuilt in 2024 – ready for installation |
| Fuel Type | Petrol / Gasoline |
| Condition | Excellent – freshly rebuilt, low-mileage base |
| Warranty | 12-Month Limited Parts Warranty (upon installation verification) |
Included in the Package
Complete BMW S14B23 engine (rebuilt, 2.3L inline-four)
Getrag 5-speed manual gearbox
Differential (matching ratio, sourced from same vehicle)
Driveshaft assembly
Bosch Motronic ECU (DME control module)
All ancillary connections, wiring harnesses, and sensors as pictured
This package ensures seamless compatibility and represents a complete drivetrain solution for E30 M3 restorations or performance builds.
Condition & Authenticity
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Genuine OEM BMW M Power components
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Rebuilt S14 engine: inspected, refreshed, and ready for installation
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Low-mileage origin: removed from an E30 M3 with under 70k miles
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All components sourced from the same car, ensuring mechanical harmony
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Stored in a dry, climate-controlled environment
Compatibility
BMW E30 M3 (1986–1991)
E30-based race cars and homologation replicas
Classic BMW restorations, restomods, and collector builds
The BMW S14 engine remains one of the most celebrated naturally aspirated four-cylinder engines ever built. Derived from the M10 block and paired with an advanced DOHC cylinder head inspired by the M88 (from the M1 and M5), the S14 powered BMW to touring car dominance in the late 1980s.
Its high-revving, responsive nature and race-proven durability make it a favorite among enthusiasts who value authentic M engineering.
This package provides the complete original driving experience — perfectly balanced between mechanical precision and analog performance — ideal for a faithful restoration or motorsport project.
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