The Volvo B 5254 T7 is a 2,435 cc, inline‑five turbocharged petrol engine produced between 2000 and 2007. It features a cast‑iron block, aluminum head, dual overhead camshafts (DOHC), and multi-point fuel injection. This unit delivered 221 kW (300 PS) and 350 Nm of torque, engineered for exhilarating performance in Volvo’s flagship models.
Fitted to high-performance variants such as the S60 R and V70 R, the B 5254 T7 was designed for drivers seeking track-capable acceleration, high-revving power, and aggressive handling. Emissions compliance was achieved through catalytic converters and engine management, meeting Euro 4 standards across all markets.
One documented concern is premature failure of the turbocharger’s electronic wastegate actuator, potentially leading to boost control faults and reduced performance. This issue, highlighted in Volvo Technical Service Bulletin 4‑03‑015, is often linked to electrical connector corrosion. In 2007, Volvo phased out the T7 designation in favor of updated powertrain strategies.
Production years 2000–2007 meet Euro 4 emissions standards (Swedish Transport Agency Type Approval #STV/B5254/2000).
The Volvo B 5254 T7 is a 2,435 cc inline‑five turbocharged petrol engine engineered for high-performance sedans and wagons (2000-2007). It combines a unique five-cylinder architecture with DOHC and a twin-scroll turbocharger to deliver explosive mid-range torque and high-revving power. Designed to meet Euro 4 emissions standards, it balances track-capable performance with everyday drivability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,435 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑5, DOHC, 20‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 83.0 mm × 90.0 mm | |
| Power output | 221 kW (300 PS) @ 5,000 rpm | |
| Torque | 350 Nm @ 2,400–5,200 rpm | |
| Fuel system | Multi-point fuel injection (Bosch Motronic 7.0) | |
| Emissions standard | Euro 4 | |
| Compression ratio | 8.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Twin-scroll turbo (Mitsubishi Heavy Industries TD04) | |
| Timing system | Belt-driven dual overhead camshafts | |
| Oil type | SAE 5W-40 (API SL/CF) | |
| Dry weight | 170 kg |
The twin-scroll turbo provides explosive acceleration with minimal lag but requires strict adherence to 60,000 km timing belt replacement intervals to prevent failure. The electronic wastegate actuator is sensitive to moisture and electrical faults. The non-interference design provides a safety margin if the belt fails. Regular inspection of the actuator's electrical connector per Volvo TSB 4-03-015 is critical for reliability. High-quality fuel (98 RON) is recommended for optimal performance.
Oil Specs: Requires API SL/CF specification oil (SAE 5W-40) for optimal turbo and bearing protection (Volvo TSB 4-03-015).
Emissions: Euro 4 certification applies to all models in this production period (Swedish Transport Agency #STV/B5254/2000).
Power Ratings: Measured under SAE net standards. Output is consistent across S60 R/V70 R applications (Volvo Tech Spec 2000).
Volvo Workshop Manual (2000)
Volvo Technical Specification Sheet (2000)
Volvo Technical Service Bulletin 4-03-015
Swedish Transport Agency Type Approval #STV/B5254/2000
The Volvo B 5254 T7 was used across Volvo's P2 platform with transverse mounting. This engine received minor ECU and emissions revisions over its lifespan, creating minor interchange limits for electronic components. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat pad on the front of the engine block, near the timing cover (Volvo Workshop Manual 2000). The code will read "B5254T7". Visual identification: Cast iron block, aluminum cylinder head with two cam covers, timing belt cover on the front, and a prominent twin-scroll turbocharger with an electronic wastegate actuator. Critical differentiation from B5254T5: B5254T7 has a higher power output (300 PS vs 220 PS) and specific ECU tuning. Critical differentiation from naturally aspirated B5254S: B5254T7 has a turbocharger and intercooler. Ancillary parts may vary by year; consult EPC for exact fitment.
The B 5254 T7's primary reliability risk is failure of the turbocharger's electronic wastegate actuator, as documented in Volvo TSB 4-03-015. This can lead to erratic boost pressure and reduced performance. While the engine's mechanical components are robust, neglecting the 60,000 km timing belt interval remains a critical secondary risk, though the non-interference design prevents catastrophic damage if it fails.
Analysis derived from Volvo technical service bulletins (2000-2007) and historical workshop manual data. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VOLVO B-5254-T7.
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 VOLVO 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.
VOLVO 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 officialVOLVO 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.
