The Ford Mustang is an American icon, and models from 2015 to 2022 brought modern performance with powerful engines, advanced technology, and sleek styling. But like any car, engines can wear out over time due to high mileage, overheating, or mechanical failure. Replacing the engine in your Mustang can restore performance, reliability, and driving excitement. This guide outlines the step-by-step process of replacing a Ford Mustang engine while highlighting how Power Engines can provide the right replacement unit built to OEM standards.
Preparation and Tools Required
Before starting, gather essential tools including an engine hoist, jack stands, hydraulic jack, complete metric socket and wrench sets, torque wrench, screwdrivers, pliers, drain pans, and protective gloves. You will also need replacement fluids such as oil, coolant, and transmission fluid. Park the Mustang on a level surface, disconnect the battery, and allow the engine to cool completely before beginning.
Step 1: Remove the Hood and Drain Fluids
Unbolt and remove the hood for better access to the engine bay. Drain engine oil, coolant, and transmission fluid into proper containers. Properly disposing or recycling fluids is important for safety and compliance.
Step 2: Disconnect Wiring and Fuel Lines
Label all wiring harnesses, sensors, and vacuum hoses before disconnecting them. Relieve pressure in the fuel system and carefully disconnect fuel lines. Keeping clear documentation with photos ensures smooth reassembly.
Step 3: Remove Accessories and Intake Components
Detach the alternator, A/C compressor, and power steering pump. These can sometimes be secured aside without disconnecting their lines. Remove the air intake, radiator, cooling fans, and intercooler (for EcoBoost models) to make space for the engine to be removed.
Step 4: Disconnect Exhaust and Transmission
Unbolt the exhaust manifold or downpipe from the engine. Support the transmission with a jack and remove the bolts connecting the engine to the transmission housing. For automatic models, disconnect torque converter bolts; for manual models, disconnect the clutch linkage.
Step 5: Remove Motor Mounts and Extract the Engine
Unbolt the motor mounts on both sides of the engine. Attach chains to the engine’s designated lifting points and use the hoist to carefully lift the engine out of the bay. Verify that all hoses, wires, and mounts are disconnected before full extraction.
Step 6: Prepare the Replacement Engine
Transfer necessary components from the old engine to the replacement unit, such as intake and exhaust manifolds, sensors, and brackets. Always replace gaskets, seals, and belts during this stage. At Power Engines, our Mustang-compatible engines are road-legal and built to meet or exceed OEM specifications, ensuring proper fitment and compliance with emissions standards.
Step 7: Install the New Engine
Lower the replacement engine into the bay with the hoist, aligning it with motor mounts and the transmission. Torque bolts to factory specifications. Reconnect the exhaust, transmission, and accessory components.
Step 8: Reconnect Wiring, Fuel, and Cooling Systems
Reattach wiring harnesses, sensors, fuel lines, and vacuum hoses. Install the radiator, cooling fans, and intake system. Refill the engine with fresh oil, coolant, and transmission fluid.
Step 9: Test and Break-In
Reconnect the battery and turn the ignition to ON to allow the fuel pump to prime. Start the engine and let it idle, checking for leaks, warning lights, or unusual noises. During the break-in period, avoid high RPMs and aggressive driving. Change the oil after the first 500 miles to maximize engine life.
Replacing the engine in a Ford Mustang (2015–2022) is a challenging but rewarding project that restores your vehicle’s power and reliability. With proper preparation, careful attention to detail, and a high-quality replacement engine from Power Engines, you can enjoy the performance and driving excitement that the Mustang is famous for. Whether you’re restoring your daily driver or upgrading for long-term ownership, Power Engines provides the trusted solution to get your Mustang back on the road.
