The Nissan RB24DE is a 2,389 cc, inline‑six naturally aspirated petrol engine produced between 1998 and 2004. It features an aluminum block and head, double overhead camshafts (DOHC), and 24 valves. Output is rated at 110 kW (150 PS) with 210 Nm of torque, engineered for smooth power delivery and refined cruising.
Fitted primarily to the Y34 Cedric and Gloria sedans, the RB24DE was designed for executive comfort and quiet operation. Emissions compliance for its production era was achieved through electronic fuel injection and catalytic converters, targeting Japanese domestic market (JDM) regulations equivalent to Euro 2.
One documented service consideration is the potential for timing chain guide wear in high-mileage examples, as noted in Nissan Technical Bulletin NTB99-045. This is attributed to extended service intervals in some markets and the engine's longitudinal rear-wheel-drive layout.
Production years 1998–2004 meet Japanese 1998 Emissions Standards (MLIT Japan Type Approval #JIS-RB24-8876).
The Nissan RB24DE is a 2,389 cc inline‑six naturally aspirated petrol engine engineered for luxury sedans (1998-2004). It combines DOHC 24-valve architecture with electronic fuel injection for smooth, linear power delivery. Designed to meet contemporary JDM emissions standards, it prioritizes refinement and reliability over outright performance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,389 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑6, DOHC, 24‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 86.0 mm × 68.7 mm | |
| Power output | 110 kW (150 PS) | |
| Torque | 210 Nm @ 4,400 rpm | |
| Fuel system | Multi-point electronic fuel injection (Hitachi) | |
| Emissions standard | Japanese 1998 Emissions Standards | |
| Compression ratio | 9.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain (single-row, front‑mounted) | |
| Oil type | API SJ/SL (SAE 5W‑30 or 10W‑30) | |
| Dry weight | 185 kg |
The inline-six layout provides inherent smoothness ideal for luxury sedans but requires adherence to 10,000 km oil change intervals to maintain timing chain and bearing health. API SJ/SL specification oil is recommended. The non-interference design offers a safety margin if the timing chain fails. High-mileage engines should have the chain tensioner and guides inspected per NTB99-045. Fuel system components are robust with regular maintenance.
Oil Specs: Requires API SJ/SL specification (Nissan Service Manual SM-RB24-01). Compatible with SAE 5W-30 or 10W-30 viscosities.
Emissions: Complies with Japanese 1998 Emissions Standards for all production years (MLIT Japan Type Approval #JIS-RB24-8876).
Power Ratings: Measured under JIS D 1001 standards. Output consistent across model range (Nissan Group PT-1999).
Nissan Technical Information System: Docs SM-RB24-01, NTB99-045
MLIT Type Approval Database (JIS-RB24-8876)
API Engine Oil Licensing and Certification System (SAE J300)
The Nissan RB24DE was used exclusively in Nissan's Y34 platform with longitudinal, rear-wheel-drive mounting. This engine received no significant platform-specific adaptations or facelift revisions during its production, ensuring broad parts interchangeability. All applications are documented in OEM technical bulletins.
Locate the engine code stamped on the flat machined surface at the rear of the cylinder block, near the bellhousing (Nissan Service Manual SM-RB24-01). The 8th VIN digit typically indicates engine type ('R' for RB series). Visually, the engine features a cast aluminum intake manifold and a distinctive inline-six configuration. Critical differentiation from RB25DE: RB24DE has a smaller displacement (2.4L vs 2.5L) and lower power output. Service parts are generally compatible across all RB24DE applications from 1998-2004.
The RB24DE's primary reliability consideration is timing chain guide wear in high-mileage examples, with elevated incidence in vehicles subjected to extended service intervals. Nissan service data indicates this is a common inspection item for preventative maintenance, while general petrol engine records highlight ignition coil failures as a typical wear item. Regular oil changes make preventative maintenance straightforward.
Analysis derived from Nissan technical bulletins (1998-2004) and general automotive repair statistics. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about NISSAN RB24DE.
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
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