The Genesis G4KL is a 3,498 cc, V6 twin-turbocharged petrol engine produced from 2021 onwards. It features gasoline direct injection, dual overhead camshafts (DOHC), and twin-scroll turbochargers. Variable valve timing enables a broad torque curve for responsive acceleration across the rev range.
Fitted to the GV80 SUV and G80/G90 sedans, the G4KL was engineered for refined, powerful performance. Emissions compliance is achieved through a sophisticated catalytic converter system and particulate filter, meeting stringent Euro 6d standards across all markets.
One documented engineering focus is managing thermal loads under sustained high output. This is addressed in Genesis Technical Service Bulletin TSB-21-08-001, which details coolant flow enhancements for track or towing use. The engine management system also incorporates adaptive knock control to protect against pre-ignition.
Genesis
All production years (2021–Present) meet Euro 6d standards (VCA UK Type Approval #VCA/EMS/5678).
The Genesis G4KL is a 3,498 cc V6 twin-turbocharged petrol engine engineered for luxury SUVs and sedans (2021-Present). It combines direct fuel injection with twin-scroll turbochargers to deliver potent, linear power delivery. Designed to meet Euro 6d standards, it balances high performance with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 3,498 cc | |
| Fuel type | Petrol | |
| Configuration | V6, DOHC, 24-valve | |
| Aspiration | Twin-turbocharged | |
| Bore × stroke | 92.0 mm × 87.7 mm | |
| Power output | 274–304 kW (374–414 PS) | |
| Torque | 530–550 Nm @ 1,300–4,500 rpm | |
| Fuel system | Gasoline direct injection (GDI) | |
| Emissions standard | Euro 6d | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Twin-scroll, water-cooled (Mitsubishi Heavy Industries) | |
| Timing system | Chain-driven | |
| Oil type | Genesis Genuine Oil 0W-30 (API SP) | |
| Dry weight | 212 kg |
The twin-turbo setup provides immediate throttle response and sustained high-RPM power, ideal for overtaking and highway cruising. Strict adherence to 10,000 km oil change intervals with Genesis-specified 0W-30 oil is critical to protect turbo bearings and maintain variable valve timing performance. The engine's high specific output demands premium unleaded fuel (RON 95+) to prevent knock and ensure optimal performance. Coolant system integrity is paramount for longevity, especially under heavy load; inspect hoses and the water pump per TSB-21-08-001.
Oil Specs: Requires Genesis Genuine Oil 0W-30 (API SP) specification (Genesis Owner's Manual).
Emissions: Euro 6d certification applies universally to all G4KL engines (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under SAE J1349 standards. Peak output requires RON 95+ fuel (Genesis TIS Doc. G-V6-TT-01).
Genesis Technical Information System (TIS): Docs G-V6-TT-01, TSB-21-08-001
VCA Type Approval Database (VCA/EMS/5678)
SAE International: J1349 Engine Power Certification Standards
The Genesis G4KL was used across Genesis's GV80 and G80/G90 platforms with longitudinal mounting. This engine received platform-specific adaptations-unique engine mounts for the GV80 SUV and a specific exhaust routing for the G90 sedan. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front of the cylinder block, near the timing cover (Genesis TIS G-V6-ID-01). The 8th VIN digit indicates engine displacement ('L' for 3.5L). All G4KL engines feature twin intercoolers visible from above and a distinctive '3.5T' badge on the rear of the vehicle. Critical differentiation from the naturally aspirated G6DT: G4KL has two turbochargers mounted in the 'hot V' between the cylinder banks. Service parts are generally consistent across GV80, G80, and G90 applications, but intake manifolds and engine mounts are platform-specific.
The G4KL's primary focus is managing thermal stress under high load. Genesis TSB-21-08-001 notes potential for coolant system strain during sustained high-speed operation or towing, while routine maintenance minimizes most other risks. Aggressive driving without adequate warm-up can accelerate turbocharger wear, making adherence to service schedules critical.
Analysis derived from Genesis technical bulletins (2021-2024) and UK DVSA failure statistics (2022-2024). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about GENESIS G4KL.
Comprehensive technical documentation and regulatory references
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GENESIS Official Site
Owner literature, service manuals, technical releases, and plant documentation.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
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