3.8L V6 GDI Lambda II Engine Complete Assembly for 2020-2025 Hyundai

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

• Verify the 8th digit of the VIN is 'E'.
• Confirm the vehicle is All-Wheel Drive (AWD) by checking for a rear differential, rear driveshaft, or HTRAC badging.
• Verify the engine code stamped on the rear of the original block reads 'G6DN'.

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

Special tools this job needs:

• Engine hoist/crane with heavy-duty load leveler
• Subframe/propulsion system lift (OTC HMA52200-A or equivalent)
• Outer tie-rod ball joint remover (09568-2J100)
• High-pressure fuel line disconnect tools
• Bi-directional OBD2 scan tool (Hyundai GDS or equivalent)

Budget for these consumables at install:

• Engine Oil (6.5 quarts of full synthetic 5W-30 meeting ACEA A5/B5)
• OEM Hyundai Oil Filter
• Engine Coolant (Hyundai-spec P-OAT green/blue or pink long-life coolant)
• Spark Plugs (6 new OEM-spec Iridium spark plugs)
• Upper and lower intake manifold gaskets
• Exhaust manifold gaskets
• Thermostat and gasket
• High-pressure fuel pump O-ring
• Single-use high-pressure fuel pipe (crush-style)
• Front crankshaft seal and rear main seal
• Driveline fluids (fresh gear oil for the AWD transfer case/PTU)

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

What’s involved: Crankshaft Position (CKP) Sensor Relearn, Throttle Body Idle Air Volume Relearn, Fuel Trim/Adaptive Value Reset, and potential AWD ECU software update.

A dealership-level scan tool (such as Hyundai GDS) is required to perform the Crankshaft Position Sensor Relearn and reset adaptive values. Failure to perform these steps can result in misfires, rough idling, or limp home mode.

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

• High-Pressure Fuel Pipe Hazard: The high-pressure fuel line operates at over 2,000 PSI and is a single-use crush-style pipe. Never reuse it, as it creates an immediate fire hazard.
• AWD Transfer Case (PTU) Alignment: Splines of the intermediate shaft must be aligned perfectly when mating the engine and transmission to the PTU to avoid stripping splines or damaging internal seals.
• Intake Manifold Debris Cleaning: If the original engine suffered catastrophic failure, the intake manifold must be thoroughly washed to prevent leftover metal debris from being sucked into the new engine.
• Carbon Buildup Service: Perform a walnut blasting service on the intake ports and valves of the replacement engine prior to installation to address GDI carbon buildup.
• Oil Pan and Pickup Tube Swap: Swap the oil pan and pickup tube from the original engine to ensure subframe compatibility and cleanliness.
• Fragile Sensors and Connectors: Plastic connectors on the harness become brittle with age and heat; handle with extreme care.

Easy to get right once you know them:

• Ordering for a FWD Palisade: Attempting to install this AWD-configured engine into a FWD vehicle where mounting bosses and oil pan clearances do not align.
• Skipping the Crankshaft Position (CKP) Relearn: Omitting the electronic calibration, leading to immediate misfire codes (P0300) and poor performance.
• Reusing Single-Use Gaskets and Fuel Lines: Reusing the high-pressure fuel line or intake gaskets, resulting in vacuum or fuel leaks.
• Not Replacing Spark Plugs Prior to Installation: Failing to replace spark plugs while the engine is out, making rear bank replacement extremely difficult later.
• Ignoring Oil Consumption: Failing to check the oil level regularly on this engine family, which is prone to high oil consumption.
• Skipping Pre-Install Maintenance: Installing the engine without performing a walnut blast on the intake valves to clear carbon buildup.

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: