Restore lost fuel mileage and engine quietness with this Hyundai Elantra G4NB Remanufactured Engine long block. Built for front-wheel-drive sedans, this 2.0L 4-Cylinder 16-Valve DOHC Nu platform cures bottom-end knocking issues. A candid trade-off demands manual oil pressure priming prior to starting to prevent variable cam phaser rattle and pin scoring during initial dry turnover.

High-pressure die-cast aluminum block architecture features casting designation G4NB with integral cast iron cylinder liners. Dual overhead camshafts feature chain drive timing with dual continuous variable valve timing phasers. Crated envelope dimensions measure 36in length by 36in width by 36in height with an engine weight of 260 lbs. Rotating assembly components feature a micro-polished nodular iron crankshaft, forged connecting rods, hypereutectic pistons, and a 4.2-quart capacity stamped steel oil pan.

Key Features of Hyundai G4NB

Automotive service centers buy Hyundai G4NB remanufactured engine assemblies to eliminate timing chain slap and piston slap in commuter fleets. This precision long block restores original emissions compliance and maintains uniform compression across all cylinders.

- CNC-machined cylinder block decks establish an Ra 20 finish to secure multi-layer steel head gasket clamping under high cylinder pressure
- Diamond plateau cylinder honing produces precise 45-degree cross-hatch angles to accelerate piston ring break-in
- Balanced crankshaft journals undergo micro-polishing to hold 0.0003in TIR runout to prevent bottom-end journal wear
- Align-honed main bearing saddles maintain 0.0012in oil clearances to support hydrodynamic film pressure
- Multi-layer steel head gaskets resist thermal scrub between the aluminum block and cylinder head
- Dual CVVT camshaft assemblies undergo mechanical calibration to ensure rapid valve response across varying throttle positions
- Rebuilt 16-Valve cylinder heads feature multi-angle valve seat profiles with 0.001in concentricity for maximum intake efficiency

Dyno Load Precision Machining Tolerances

Automated dynamometer spin testing verifies 148 HP output at 6,500 RPM and 131 ft-lbs torque at 4,700 RPM under heated run conditions. Machine shop tolerances mandate crankshaft journal runout below 0.0003in TIR with connecting rod bearing oil clearances held at 0.0012in. Plateau-honed cylinder walls produce compression between 180 PSI and 185 PSI across all 4 combustion chambers. Hot engine oil pressure measures 50 PSI at 3,000 RPM while regulated coolant temperatures maintain 192°F to confirm cooling jacket integrity before shipment.

Vehicle Fitment Drivetrain Guide

This remanufactured engine fits 2011 to 2013 Hyundai Elantra models powered by the 1.8L 1797cc or 2.0L Nu 4-Cylinder engine bearing block casting G4NB. Compatible with front-wheel drive layouts mated to 6-Speed Manual or 6-Speed Automatic transaxles. Fitment note: this assembly does not fit earlier 2.0L Beta II engines, direct-injected G4NC platforms, or turbocharged Veloster models due to intake port, sensor harness, and engine mount casting variations.

Installation Protocol Service Schedules

Ensure CVVT oil control valves and camshaft position sensor connectors click into place before starting. Flush all oil cooler lines to purge debris from previous engine failure. Never run this non-turbo long block in forced induction setups exceeding 5 PSI of boost without aftermarket forged pistons and modified fuel maps.

- Fill crankcase with 4.2 quarts of SAE 5W-20 break-in oil before running the starter motor
- Drain initial break-in oil and install a replacement oil filter at the 500-mile mark
- Perform routine synthetic motor oil and filter changes every 3,000 miles or 5,000 miles

Warranty Terms Core Return Policy

Every remanufactured Hyundai engine includes our comprehensive 3-Year Unlimited-Mile parts warranty for peace of mind. Our freight team provides prepaid return tags for your rebuildable core within an authorized 30-day window. Crated delivery contains the long block, pre-installed timing components, oil pan, valve cover, and technical installation documents.