Your BMW is engineered for the "Ultimate Driving Experience." When internal components fail, you need a replacement that matches those exacting standards without the dealership price tag.
At American Used Auto Parts LLC, we supply verified, inspected used BMW engines for sale across the United States. We maintain a specialized inventory of N-Series, B-Series, and M-Performance powertrains, offering a dependable, cost-effective solution to restore your vehicle’s factory dynamics.
Get a Free Quote or call us now for instant Support & Free Consultancy.
At American Used Auto Parts LLC, we understand the precision required for German engineering. Our sourcing and verification process is designed to ensure mechanical integrity for high-performance N-Series, B-Series, and M-Power engines.
We source used BMW assemblies exclusively from verified insurance auctions and dismantling partners. This ensures we obtain engines with a traceable VIN history, allowing us to verify the donor vehicle's mileage and accident status before it enters our inventory.
Our technicians focus on the critical internal components that matter most.
Compression Verification: We test cylinder pressure to ensure the rings and valves are sealing within factory tolerances.
Visual Leak Check: Specific attention is paid to common BMW leak points, including the valve cover gaskets, oil filter housing, and oil pan.
Crank Rotation: We verify that the crankshaft rotates 360 degrees smoothly, ensuring no internal binding or rod knock.
Fluid Analysis: We check for "milkshake" oil (coolant mixing), which indicates head gasket failure, ensuring you never receive a compromised unit.
To provide the best value, our engines are sold as Long Block Assemblies.
Included: Block, Head, Pistons, Crankshaft, Camshafts.
Convenience Items: Accessories such as the Turbocharger, Alternator, AC Compressor, and Water Pump may be left attached for your convenience, but they are not covered under warranty. We highly recommend installing new OEM accessories or swapping your original units to guarantee reliability.
Once approved, every engine is fully drained of hazardous fluids, strapped to a standard 4x4 pallet, and shrink-wrapped. This ensures your engine arrives safe, secure, and ready for your mechanic to prep.
Don't let a mechanical failure keep your "Ultimate Driving Machine" off the road. American Used Auto Parts LLC makes the sourcing process transparent and secure.
.
Fill out our form with your VIN to get pricing on a compatible N20, N55, or B58 assembly.
Our team uses OEM data to match your specific engine code, ensuring the replacement unit works with your vehicle’s ECU and transmission.
We ship directly to your repair shop or residence via insured LTL freight. (Commercial address delivery is highly recommended for faster service).
At American Used Auto Parts, we are all about getting your vehicle running great and saving you money. With our extensive inventory and commitment to quality, we are your go-to source for reliable used auto parts.
At American Used Auto Parts, we are dedicated to helping you get your vehicle back on the road without draining your wallet. We specialize in sourcing high-performing, rigorously inspected used engines and transmissions to solve your car's most critical issues. Whether you need a replacement engine or a reliable transmission, count on us for the ideal solution.
With access to a comprehensive network of inventory yards across the USA, we help you find the exact engine or transmission you need—from domestic classics to import models.
Get professionally inspected auto parts at competitive prices. We stand behind our products with a standard Replacement Warranty to ensure your peace of mind.
Our knowledgeable parts specialists are here to guide you to the perfect solution. We verify compatibility by VIN to ensure you get the right part the first time.
We offer swift and reliable delivery to commercial and residential addresses across the USA, typically shipping orders within 7-10 business days.
Our used BMW engines are sold as a Long Block Assembly (Block, Head, Pistons, Crankshaft). Accessories such as the Turbocharger, Alternator, DME/ECU, and Fuel Injectors may be left attached for convenience, but they are not covered under warranty. We highly recommend swapping over your original verified accessories and Engine Control Unit (ECU) to ensure proper compatibility.
Yes. BMW vehicles require the replacement engine's sensors and wiring harness to communicate with your vehicle's specific anti-theft system (CAS/EWS). You must typically swap your original wiring harness and ECU onto the replacement block. If you use the donor engine's sensors, programming/coding by a certified BMW technician may be required.
For engines known to have timing guide sensitivities (such as the N20 or N55), our inspection includes checking for chain slack and noise during crank rotation. However, timing chains and guides are considered wear items. We strongly recommend installing a new timing chain kit and oil pump drive chain prior to installation to ensure long-term reliability.
To ensure safety, the engine is fully drained of fluids, strapped to a standard pallet, and shrink-wrapped. We ship via LTL Commercial Freight. We recommend shipping directly to a business address with a loading dock to avoid residential delivery delays and liftgate fees ($75).
Our standard warranty covers the internal lubricated parts of the engine block and cylinder head against mechanical failure (knocking, excessive oil consumption, cracks). It does not cover labor costs, fluid leaks from gaskets/seals, or failure caused by improper installation (e.g., overheating due to lack of coolant).
Your trusted nationwide supplier for high-quality, inspected used car engines and transmissions. We are committed to delivering reliable auto parts and exceptional customer service to get your vehicle back on the road.
©2026. American Used Auto Parts. All rights reserved