2.5L Non-Turbo Engine Complete Assembly for 2018-2023 Mazda 6, CX-5, CX-9

A quick look at your own vehicle makes sure the right engine shows up:

• Confirm that the 8th digit of your vehicle's VIN is Y.
• Verify whether your vehicle is Front-Wheel Drive (FWD) or All-Wheel Drive (AWD).
• Verify that your original turbocharger is in good working order.

What the install really takes — plan and budget with confidence:

Special tools this job needs:

• Engine hoist and load leveler
• 8mm hex bit or 17mm socket for oil drain plug
• Fuel line quick-disconnect tools
• High-end OBD2 diagnostic scanner with bidirectional capabilities

Budget for these consumables at install:

• 5.5 quarts of OE-spec 5W-30 full synthetic engine oil
• Genuine Mazda oil filter (Part # 1WPE-14-302)
• Genuine Mazda FL22 pre-diluted coolant
• Genuine NGK/Mazda spark plugs (Part # PY8W-18-110)
• Redesigned, updated exhaust manifold gasket
• Intake manifold gasket
• Turbocharger mounting gaskets and oil/coolant feed line crush washers
• New high-pressure fuel pipe (one-time-use component)
• Engine air filter and fuel filter

What your vehicle’s computers will need after the swap:

What’s involved: PCM Adaptive Relearn, Throttle Body Relearn, and Immobilizer Security Re-marriage

Sources differ on tool requirements: Arm 1 states no dealer tool is required for basic relearns, while Arm 2 states a factory-level scan tool is required to perform the security/immobilizer re-marriage to prevent a no-start condition. Cautious value 'yes' selected for dealer tool requirement.

Pro tips for a smooth first start-up — hand them to whoever does the install:

• Transferring Your Turbocharger: Inspect the transferred turbocharger exhaust wheel and shaft for play or oil blow-by, and use new gaskets and seals.
• AWD vs. FWD Oil Pan & Brackets: Swap the oil pan and transfer case/intermediate shaft mounting brackets if swapping between AWD and FWD configurations.
• Exhaust Gasket Alignment: Use the updated multi-layered steel exhaust gasket and torque strictly to factory specifications to prevent cylinder head stress.
• Fragile Fuel System Components: Keep all fuel ports capped to prevent debris contamination.
• Complex Assembly: The engine bay is tight and has many brackets that must be installed in a specific order.

Easy to get right once you know them:

• Reusing the High-Pressure Fuel Line: Reusing this crush-to-seal line causes severe high-pressure fuel leaks.
• Assuming 'LESS TURBO' Means Naturally Aspirated: This is a turbo-spec engine (PY-VPTS) and cannot be installed in a naturally aspirated vehicle.
• Using the Wrong Coolant: Refilling with universal green coolant instead of Mazda FL22 degrades internal seals.
• Forgetting to Prime the Turbo: Failing to manually prime the transferred turbocharger with clean engine oil before first start will destroy its bearings.
• Skipping the ECU Re-marriage: Believing the engine is plug-and-play without accounting for the immobilizer re-marriage will result in a no-start condition.

Not issues with the units on this page — the manufacturer documented these for every engine of this family, wherever you buy one. Handy for your installer: