BMW E30 M3 S14B23 Engine & Getrag 265 5-Speed Gearbox – Complete, Documented Powertrain

Source: 1988 BMW E30 M3 | Mileage: ~157k Miles | BaT Provenance: Previously sold, October 2021 | Condition: Complete Runner upon Removal • Ideal for Rebuild

Acquire a piece of documented BMW history. This numbers-matching S14B23 engine and Getrag 265 5-speed gearbox were the original heart of a 1988 BMW E30 M3, previously sold on Bring a Trailer. With approximately 157k reported miles, this complete, unmolested powertrain is the ultimate foundation for an authentic restoration. It presents as a strong, running core that can be installed as-is for a period-correct driver or serve as the perfect candidate for a comprehensive rebuild.

Key Package Specifications & Inclusions:

• Engine: BMW S14B23 2.3L Inline-4 (Complete with Ancillaries)

• Transmission: Getrag 265 5-Speed Manual Gearbox with Clutch

• Source Vehicle: 1988 BMW E30 M3

• Reported Mileage: ~157,000 Miles

• Provenance: Documented from a Bring a Trailer sale (October 2021)

• Condition: Removed from a running vehicle. Sold as a complete core for inspection/rebuild.

• Notable Features: Powder-coated valve cover and intake plenum.

• Also Includes: Radiator, fan, shroud, and assorted spare components.

This BMW 2.3-liter S14B23 inline-four and Getrag five-speed manual gearbox were removed from the seller’s 1988 BMW M3, which reportedly showed approximately 157k miles and was previously sold on BaT in October 2021. The engine features a cast-iron block, an aluminum cylinder head with 16 valves, dual overhead camshafts, individual throttle bodies, and a powder-coated valve cover and intake plenum with “BMW M Power” lettering. A used clutch is included with the gearbox, and the package also includes a radiator, cooling fan and shroud, and a variety of ancillary equipment and spare components.

The 2.3-liter BMW S14 inline-four features dual overhead camshafts, an aluminum cylinder head with 16 valves, individual throttle bodies, and a cast-iron block. Factory-rated output was 192 horsepower and 170 lb-ft of torque when new. The engine is topped with a green powder-coated BMW M Power intake plenum and valve cover.