1.6L DOHC 16-Valve Engine Complete Assembly for 2016-2018 Hyundai Tucson

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

• Verify the 8th digit of the VIN is '2'.
• Confirm the vehicle has an Automatic Transmission (7-speed DCT).
• Locate and verify the engine code stamped on the front-left side of the block reads 'G4FJ'.
• Determine if the vehicle is FWD or AWD to prepare for potential oil pan/bracket swaps.
• Have a mechanic inspect the existing turbocharger for shaft play or oil leaks before transferring.

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

Special tools this job needs:

• Crankshaft pulley holding tool (OEM 09231-2B100)
• Torque angle meter/gauge
• Direct-injection fuel injector seal installer/compressor tool
• Professional-grade engine hoist
• Advanced bi-directional OBD-II scan tool (Hyundai GDS or equivalent)

Budget for these consumables at install:

• 4.5 to 5.1 quarts of full synthetic 5W-30 or 0W-30 engine oil (API SN Plus or SP, ACEA A5/B5)
• OEM Hyundai oil filter
• Ethylene glycol-based phosphate coolant (OEM Hyundai green or pink)
• OEM-spec iridium spark plugs
• Intake and exhaust manifold gaskets
• Valve cover gasket
• Turbocharger mounting gaskets, oil drain gaskets, and copper crush washers
• Single-use Flywheel/Flexplate bolts
• Crankshaft balancer bolt
• Cylinder head bolts (OEM 22321-26000 / 22321-2B700) if head is removed
• Front and rear main seals (preventative)
• New PCV valve

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

What’s involved: Crankshaft Position (CKP) Sensor Relearn, DCT Relearn, Immobilizer Re-marriage, and General ECU/PCM Relearn

sources differ: Arm 1 states only CKP Relearn is required via bi-directional scan tool; Arm 2 states Immobilizer Re-marriage, DCT Relearn, and General ECU Relearn are required. Cautious value 'yes' selected for dealer tool requirement due to DCT and Immobilizer programming needs.

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

• Turbocharger Priming: Must manually prime the turbocharger by pouring clean engine oil into its feed port and cranking the engine for 10-15 seconds with ignition disabled before starting.
• Keyless Crankshaft Sprocket Danger: Crankshaft timing sprocket is a keyless, slip-fit design. Loosening the main crank bolt without the proper holding tool can cause the timing sprocket to slip, bending the valves.
• Direct-Injection Fuel Line Safety: Operates over 2,000 PSI. Teflon seals must be replaced using the proper compression tool if transferring injectors to prevent leaks.
• AWD Transfer Case Clearance: AWD models may require swapping the original oil pan or intermediate shaft mounting brackets to clear the PTU.
• DCT Relearn Procedure: Crucial to perform the DCT adaptation/relearn procedure using a dealer-level scan tool to prevent harsh shifting and software failures.

Easy to get right once you know them:

• Reusing Stretched Bolts: Reusing torque-to-yield flywheel/flexplate bolts can cause them to back out or snap.
• Using Incorrect or Non-LSPI Engine Oil: Using standard conventional or cheap synthetic oil can cause Low-Speed Pre-Ignition (LSPI), cracking piston ring lands. Must use API SN Plus or SP.
• Skipping the Crankshaft/DCT Relearn: Assuming the replacement engine is defective due to rough idle or harsh shifting when they simply skipped the mandatory relearn procedures.
• Neglecting Intake Valve Cleaning: Transferring a dirty intake manifold without cleaning or walnut-blasting the carbon deposits.
• Reusing Old Turbo Without Inspection: Transferring a failing or contaminated turbocharger to the replacement engine, causing repeat engine failure.

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: