Rebuilt BMW I3 Engine for sale
- Persis firstusedautoparts
- May 29
- 2 min read

Rebuilt BMW I3 Engine for sale. Is your BMW i3 Range Extender (REx) having issues with its small gasoline engine? Whether you're replacing a worn-out generator engine or tackling performance issues, First Used Auto Parts offers rebuilt BMW i3 REx engines that deliver factory-level reliability and are ready to ship across the U.S.
✅ What We Offer: Rebuilt BMW i3 Range Extender (REx) Engines Rebuilt BMW I3 Engine for sale.
The BMW i3 REx features a unique plug-in electric powertrain supplemented by a small gasoline-powered range extender engine — a compact 2-cylinder unit sourced from BMW’s motorcycle division. This engine acts solely as a generator to recharge the battery on the go, not to drive the wheels.
Engine Overview:
Engine Type: 2-cylinder gasoline engine
Engine Code: W20K06U0
Displacement: 647cc
Fuel System: Electronic Fuel Injection
Power Output: ~34 HP
Usage: Generator for battery recharging (not direct propulsion)
Vehicle Compatibility: BMW i3 REx (2014–2021)
Drivetrain: All i3 REx models (RWD)
📌 Note: This is not the electric motor but the gasoline-powered range extender engine used in i3 REx models.
🛠️ Rebuilt to OEM Specifications
Each engine is fully disassembled, cleaned, machined, and reassembled using OEM or high-grade equivalent parts. Pistons, rings, bearings, gaskets, and valve components are replaced or refurbished for dependable long-term use.
🛡️ Warranty Included
All rebuilt BMW i3 range extender engines come with a limited warranty, offering peace of mind and dependable performance for your EV hybrid system.
Key Benefits:
⚙️ Exact OEM Replacement for the i3 REx gasoline generator
🛠️ Rebuilt with Care by experienced technicians familiar with hybrid and EV systems
🚚 Nationwide Shipping with safe, insured delivery
💬 Fitment Help Available — just provide your VIN and we’ll verify compatibility
💰 Affordable Alternative to costly dealer engine replacements or EV service centers
Restore Your BMW i3 REx Today
Whether your i3 REx engine has failed due to high mileage, thermal issues, or fuel system wear, our rebuilt 647cc 2-cylinder engines provide a reliable, cost-effective solution to keep your EV running efficiently and extending your electric range.
📞 Call Now or Request a Free Quote Online
Get your BMW i3 REx back on the road with a rebuilt engine from First Used Auto Parts — engineered for performance, priced for value, and shipped nationwide.




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