BMW S50B30US Engine for Sale – Rebuilt 3.0L Inline-6 from 1995 M3 | 1,500 Miles Since Rebuild

Looking for a rare BMW S50B30US engine in excellent condition? This is a U.S.-spec S50B30US 3.0L inline-six removed from a 1995 BMW M3 (E36). The motor was professionally rebuilt at 149,659 km (≈93,000 miles) and has only ~1,500 miles on the odometer since the rebuild, making it one of the cleanest and most reliable S50 engines currently available.

Whether you’re restoring a classic E36 M3, planning a performance swap, or looking for a tested replacement motor, this BMW S50B30US engine offers authenticity, durability, and performance.

Key Specifications

• Engine Code: S50B30US

• Displacement: 3.0L Inline-6

• Origin: 1995 BMW M3 (E36, U.S.-spec)

• Mileage at Rebuild: 149,659 km (~93,000 miles)

• Current Usage: ~1,500 miles since rebuild

• Condition: Rebuilt and running perfectly

Compatibility & Fitment

The S50B30US engine is the original motor fitted in 1995 U.S.-spec BMW M3 E36 models. It is also popular for swaps into other BMW chassis due to its reliability and performance.

Compatible with:

• BMW E36 M3 (1995, U.S. model)

• Suitable for E30, E36, and E46 swaps with correct wiring & ECU setup

Common buyer searches include:

• BMW S50B30US engine for sale USA

• 1995 BMW M3 S50 engine replacement

• rebuilt BMW S50 engine low miles

• moteur BMW M3 E36 3.0 occasion USA/France

• BMW E36 M3 S50 swap kit

Performance & Technical Details

The S50B30US is the U.S.-spec version of BMW Motorsport’s inline-six from the E36 M3, known for its smooth power delivery and tuning potential.

• Engine Type: 3.0L DOHC Inline-6

• Power Output (factory): 240 HP @ 6,000 rpm

• Torque: 305 Nm (225 lb-ft) @ 4,250 rpm

• Compression Ratio: 10.5:1

• Valvetrain: DOHC, 24-valve with VANOS variable valve timing

• Fuel System: Bosch Motronic M3.3 ECU (OBD1)

• Transmission Compatibility: Designed for manual gearboxes (Getrag 5-speed, ZF swap potential)

Rebuild Details (highlights)

• New gaskets and seals throughout

• Refurbished cylinder head

• Checked pistons, rings, and connecting rods

• Timing chain components inspected and refreshed

• Oil pump & cooling system serviced

This rebuild ensures the engine runs as close to new as possible, with a long lifespan ahead.

Why Choose This Engine?

• Fresh Rebuild – Only 1,500 miles since full professional rebuild.

• OEM Authenticity – 100% genuine BMW S50B30US, not a swap or clone.

• Collector Value – Ideal for U.S.-spec E36 M3 restorations.

• Swap Potential – Popular choice for E30/E36 performance builds.

• Cost-Effective – Save compared to sourcing a higher-mileage unit requiring future rebuilds.

We serve customers across USA, UK, France, and worldwide. Engines are professionally crated and shipped via freight for safety.