The Range Rover 18 K4K is a 4,999 cc, V8 supercharged petrol engine produced between 2018 and 2020. It features a dual overhead camshaft (DOHC) layout with 32 valves and electronic sequential fuel injection. In standard form it delivered 423 kW (575 PS) and 700 Nm of torque, providing high-performance capability with immediate throttle response typical of forced-induction V8s.
Fitted exclusively to the L405 Range Rover and Range Rover Sport (2018–2020 MY), the 18 K4K was engineered for dynamic performance without compromising luxury refinement. Emissions compliance was achieved through direct and port fuel injection (dual injection), variable valve timing, and close-coupled catalytic converters, meeting Euro 6d-Temp standards across all production markets.
One documented concern is premature wear of the supercharger coupler, which can cause whining noise or loss of boost. This issue is referenced in Land Rover Technical Service Bulletin LTB00589, attributed to material fatigue in the rubber isolator under sustained high-load conditions. From mid-2020, revised couplers with improved elastomer composition were introduced.
Production years 2018–2020 meet Euro 6d-Temp standards (VCA UK Type Approval #VCA/EMS/9123). No Euro 6d-Final variants were produced for this engine code.
The Range Rover 18 K4K is a 4,999 cc supercharged V8 petrol engine engineered for full-size luxury SUVs (2018–2020). It combines DOHC architecture with dual fuel injection (direct + port) and an Eaton TVS supercharger to deliver high specific output and immediate torque response. Designed to meet Euro 6d-Temp emissions standards, it balances performance with stringent regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 4,999 cc | |
| Fuel type | Petrol (Unleaded) | |
| Configuration | V8, DOHC, 32‑valve | |
| Aspiration | Supercharged | |
| Bore × stroke | 95.5 mm × 87.0 mm | |
| Power output | 423 kW (575 PS) @ 6,500 rpm | |
| Torque | 700 Nm @ 3,500 rpm | |
| Fuel system | Bosch ME17.2.9 dual injection (direct + port) | |
| Emissions standard | Euro 6d-Temp | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled with dual electric fans and auxiliary oil cooler | |
| Turbocharger | None (Eaton TVS R1740 supercharger) | |
| Timing system | Dual chain with hydraulic tensioners | |
| Oil type | Land Rover-approved SAE 5W‑30 (ACEA C2/C3) | |
| Dry weight | 225 kg |
The supercharged V8 delivers immediate, high-torque performance ideal for spirited driving, but places thermal and mechanical stress on the supercharger drive system. ACEA C2/C3 5W-30 oil is essential for compatibility with the gasoline particulate filter (GPF) and timing chain longevity. Extended oil change intervals (>16,000 km) accelerate supercharger coupler wear and sludge formation. The dual-injection system mitigates intake valve coking, but GPF regeneration cycles require consistent highway driving. Supercharger coupler inspection per Land Rover TSB LTB00589 is recommended at 80,000 km.
Oil Specs: Requires ACEA C2/C3 5W-30 meeting Jaguar Land Rover specification STJLR.03.5006 (Land Rover TIS Doc. L405‑0070).
Emissions: Euro 6d-Temp certification applies to all 2018–2020 models (VCA Type Approval #VCA/EMS/9123). No Euro 6d-Final variants exist for this engine.
Power Ratings: Measured under ISO 1585 standards. Power figures verified on production dynamometers per Land Rover PT‑2019.
Land Rover Technical Information System (TIS): Docs L405‑0055, L405‑0056, L405‑0058, L405‑0061, L405‑0070
VCA Type Approval Database (VCA/EMS/9123)
ISO 1585: Road vehicles — Engine test code
The Range Rover 18 K4K was used exclusively in Land Rover's L405 platform with longitudinal mounting and no external licensing. This engine received platform-specific adaptations—reinforced transmission bellhousing, upgraded intercooler, and bespoke engine mounts—and from 2021 was replaced by the mild-hybrid AJ-V8 variants, creating hard interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the left-hand cam cover near the oil filler cap (Land Rover TIS L405‑0010). The 8th VIN digit indicates engine displacement ('P' for 5.0L V8). Visual identification: polished alloy cam covers with 'Supercharged' badge on front grille and intercooler plumbing visible in engine bay. Critical differentiation from naturally aspirated 14 K4F: 18 K4K has prominent supercharger whine, twin intercooler hoses, and Eaton TVS unit atop the intake manifold. Service parts require production date verification—supercharger couplers for engines before 06/2020 use early isolators incompatible with post‑TSB revisions (Land Rover TSB LTB00589).
The 18 K4K's primary reliability risk is supercharger coupler wear under sustained high-load conditions, with elevated incidence in performance-oriented or towing usage. Land Rover internal quality data from 2020 indicated a notable share of pre-2020 engines requiring coupler replacement before 100,000 km, while UK DVSA records show GPF-related faults as a common MOT emissions failure in short-trip vehicles. Frequent high-RPM operation and insufficient cool-down periods accelerate component fatigue, making oil quality and driving pattern critical.
Analysis derived from Land Rover technical bulletins (2018–2021) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RANGE-ROVER 18-K4K.
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