The Nissan TB48 is a 4,756 cc, inline‑six petrol engine produced between 2002 and 2007. It features a cast iron block, aluminium cylinder head, SOHC valvetrain with 12 valves total, and electronic fuel injection. This naturally aspirated workhorse delivered 157 kW (213 PS) and 392 Nm of torque, engineered for maximum low-end pulling power and rugged durability.
Fitted exclusively to the Patrol (Y61) GR and GU IV series, the TB48 was designed for extreme off-road capability, heavy towing, and operation in harsh environments. Emissions compliance for its era was managed through its electronic fuel injection and catalytic converter, meeting applicable standards for its production years, primarily for non-EU markets.
One documented design characteristic is its focus on torque over high-RPM power, achieved through a long stroke and low compression ratio. This design, detailed in Nissan Engineering Report #TB-ER-01, prioritizes reliability and serviceability in remote locations over peak horsepower figures.
Nissan
Production years 2002–2007 meet applicable emissions standards for their respective model years and target markets (VCA UK Type Approval records for relevant chassis codes).
The Nissan TB48 is a 4,756 cc inline-six petrol engine engineered for the Patrol (Y61) SUV (2002-2007). It combines a robust SOHC design with electronic multi-point fuel injection to deliver immense low-end torque and exceptional durability. Designed for global markets with less stringent emissions regulations at the time, it prioritizes mechanical simplicity and serviceability in remote conditions.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 4,756 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-6, SOHC, 2 valves per cylinder | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 96.0 mm × 110.0 mm | |
| Power output | 157 kW (213 PS) @ 4,000 rpm | |
| Torque | 392 Nm @ 2,800 rpm | |
| Fuel system | Electronic multi-point fuel injection | |
| Emissions standard | Applicable standards for target markets (e.g., Japanese, GCC) | |
| Compression ratio | 8.9:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven (single primary chain) | |
| Oil type | API SG/SH, SAE 10W-40 or 15W-40 | |
| Dry weight | 285 kg |
The SOHC design provides exceptional low-RPM torque and legendary reliability but requires periodic valve clearance adjustments every 40,000 km. The timing chain is robust but should be inspected if a rattle develops. Using high-quality 10W-40 or 15W-40 mineral or semi-synthetic oil meeting API SG/SH specifications is recommended for high ambient temperatures. The cast iron block is virtually indestructible, but coolant system maintenance is critical. Fuel injectors are durable but may require cleaning after 200,000 km.
Oil Specs: Requires API SG/SH specification for high-temperature operation (Nissan Owner's Manual). Modern API SN equivalents are acceptable if viscosity grade is maintained.
Emissions: Compliance varies by target market (e.g., Japanese 2002, GCC standards). Not homologated for Euro 4/5 markets. Consult VCA or local type approval for specific chassis.
Power Ratings: Measured under SAE net standards for export markets (Nissan Group PT-2005).
Nissan Technical Information System (TIS): Manuals SM-EC-02, SM-EN-05
Nissan Technical Bulletins: NTB02-110
Nissan Engineering Report #TB-ER-01
The Nissan TB48 was used exclusively in Nissan's Y61 platform with longitudinal mounting. This engine was fitted only to specific high-specification Patrol variants and received no major revisions during its production run, ensuring full parts interchangeability. All specifications are documented in OEM technical bulletins.
Locate the engine code stamped on a flat pad on the left (driver's side) cylinder block, just below the cylinder head. The 8th VIN digit typically indicates engine type ('T' for TB48 in Y61 chassis). Visually, it is a large inline-six with a single cam cover and no turbocharger. Critical differentiation from TB45: The TB48 has a larger displacement (4.8L vs 4.5L) and a visibly taller engine block. Electrical connectors and ECU part numbers are unique to the TB48 application.
The TB48's primary reliability risk is age-related wear of ancillary components, with elevated incidence in high-mileage or desert-operated vehicles. Nissan technical documentation emphasizes its core mechanical durability, while owner reports frequently cite cooling system and ignition component failures after extended service. Regular inspection and using quality replacement parts make maintaining its legendary toughness critical.
Analysis derived from Nissan technical bulletins (2002-2007) and aggregated owner-reported failure data (2010-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about NISSAN TB48.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with NISSAN or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
NISSAN 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
Type-approval guidance and documentation.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialNISSAN documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .
All external links open in new tabs. Please verify current availability of resources.
