Experience crisp throttle response with this balanced Hyundai Kia G4KJ 2.4L Remanufactured Engine. Production machine centers align-hone aluminum block casting G4KJ to eliminate crankshaft runout across the engine bay envelope. This 2.4L 4-Cylinder 16-Valve DOHC direct-injection engine requires strict hand-priming through the main oil gallery prior to initial startup to protect shimless bucket lifters from scuffing.

High-pressure die-cast aluminum block casting G4KJ features cast iron cylinder sleeves and an align-honed main tunnel. A forged steel crankshaft spins inside upgraded tri-metal rod bearings clearanced to 0.0013in to prevent journal seizure under direct injection loads. Cylinder head casting 22111-2G510 or THETA-2 G K# houses sixteen valves, shimless bucket lifters, and dual CVVT camshafts. Crated long block weight measures 250 lbs with crated envelope dimensions of 36in length by 36in width by 36in height and holds 5.0 quarts oil.

Key Features of Hyundai Kia G4KJ

Automotive dealerships buy Hyundai Kia G4KJ remanufactured engine packages to resolve connecting rod bearing failures on 2011 models. Technicians select this remanufactured 2.4L long block replacement to restore factory compression and oil pressure.

- Block casting G4KJ receives precision CNC deck resurfacing to secure multi-layer steel cylinder head gaskets.
- Forged steel crankshaft journals receive micro-polishing down to 0.0003in runout to eliminate journal hotspots.
- Cylinder head casting 22111-2G510 undergoes CNC valve seat cutting to maintain 0.001in valve runout.
- Shimless solid bucket lifters undergo micrometer sorting to set exact intake and exhaust valve clearances.
- Upgraded tri-metal rod bearings maintain 0.0013in oil clearance to protect crankshaft throws under extreme loads.
- Diamond plateau cylinder bore honing creates an ideal crosshatch pattern that seats moly rings within 500 miles.
- Threaded brass oil gallery plugs replace press-fit plugs to ensure oil delivery to the high-pressure fuel pump.

Dyno Load Precision Machining Tolerances

Dynamometer testing verifies 198 HP at 6,300 RPM alongside 184 ft-lbs shaft torque at 4,250 RPM on our computer testing cell. Machine shop technicians measure crankshaft journal runout below 0.0003in TIR while rod bearing oil clearance measures 0.0013in. Diamond plateau cylinder honing controls piston-to-cylinder clearance to 0.0012in to prevent cold piston slap. Operating oil pressure delivers 65 PSI at 3,000 RPM while engine coolant stabilizes at 195°F. Individual cylinder compression gauges verify balanced readings between 190 PSI and 195 PSI across all four cylinders.

Vehicle Fitment Drivetrain Guide

This remanufactured engine fits 2011 Hyundai Sonata with production dates 11/2010 to 7/2011 and 2011 Kia Optima with production dates 8/2010 to 1/2011 equipped with the 2.4L 2359cc GDI engine VIN Code C or 7. It bolts to 6-Speed Automatic front-wheel-drive transaxles. This long block does not fit hybrid G4KK models, older multipoint injected Theta engines, 2.0L turbocharged G4KH sedans, or later 2014 to 2016 Theta-2 architectures.

Installation Protocol Service Requirements

Inspect high-pressure fuel pump roller lifters and replace degraded engine cradle mounts prior to bolting the long block onto the chassis subframe. Never run this direct-injected Theta-2 long block in custom turbo conversions or unvented off-road buggies lacking secondary oil cooling. Mechanics must backflush fuel rails before initial ignition fire.

- Pressure-prime internal oil channels with synthetic 5W-30 motor oil before engine turnover to cushion rod bearings.
- Drain the break-in motor oil and install a genuine OEM filter at 500 miles.
- Inspect high-pressure fuel pump cam lobes and scan fuel rail pressure sensors at 3,000 miles.

Warranty Terms Core Return Policy

Our standard 3-Year Unlimited-Mile warranty safeguards internal mechanical components and machine shop labor against defects. We arrange free prepaid freight collection for your old engine core inside a 30-day window. The crated package contains the complete long block core with timing chains, oil pan, and valve cover.