The Mercury Grand Marquis ranks among Ford's most enduring rear-wheel-drive full-size sedans. It shares its platform and drivetrain with the Ford Crown Victoria and Lincoln Town Car. Ford powered these vehicles with the robust 4.6L Modular V8 available in standard and Flex Fuel (VIN V) variants. As a result, many reach 200,000+ miles on a well-maintained original engine.
The 4.6L V8 is durable, but it develops common issues over time. For example, owners frequently report timing chain tensioner wear, coolant intrusion through intake manifold gaskets, and oil consumption in high-mileage units. When repair costs outweigh engine value, a quality used replacement engine becomes the most cost-effective path forward.
At Moon Auto Parts, our team inspects every used Mercury Grand Marquis engine for sale before it leaves our warehouse. We source Grade-A, low-mileage units many under 40,000 miles. In addition, we verify fitment using your vehicle's VIN. This ensures the engine matches your exact drivetrain, sensor configuration, and mounting points. No guesswork. No surprises at installation.
Furthermore, our 4-year / 40,000-mile written warranty covers all qualifying engines. This stands among the strongest coverage policies in the used auto parts industry. We also include free commercial shipping on every order.
We stock used 4.6L V8 engines for the 2004, 2005, 2006, 2009, and 2011 Mercury Grand Marquis. Simply select your year above to view specific options, mileage, and current pricing.
