The Volvo B 5254 T3 is a 2,521 cc, inline‑five petrol engine produced between 2001 and 2007. It features a cast‑iron block, dual overhead camshafts (DOHC), and a Mitsubishi TD04 turbocharger with an air-to-air intercooler. This forced-induction unit delivered approximately 250 hp (184 kW) and 258 lb‑ft (350 Nm) of torque, offering exhilarating performance for Volvo's flagship models.
Fitted primarily to the Volvo S60 R, V70 R, and XC90 models, the B 5254 T3 was engineered for high-speed stability and track-capable handling. Emissions compliance was achieved through electronic fuel injection and catalytic converters, meeting Euro 3 standards for applicable markets throughout its production.
One documented service concern is premature failure of the turbocharger’s oil return line gasket, potentially leading to oil leaks and turbo bearing damage. This issue, highlighted in Volvo Service Bulletin 5254T3‑14, is often linked to heat degradation and material fatigue. The engine was succeeded by the B5254T5 and B8444S engines in subsequent model years.
Production years 2001–2007 meet Euro 3 standards for applicable markets (VCA UK Type Approval not applicable for pre-1992 vehicles).
The Volvo B 5254 T3 is a 2,521 cc inline‑five petrol engine engineered for high-performance sedans, wagons, and SUVs (2001-2007). It combines a robust cast-iron block with a modern DOHC 20-valve valvetrain and timing belt to deliver turbocharged performance. Designed to meet Euro 3 emissions regulations, it incorporated catalytic converters and precise electronic fuel injection.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,521 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑5, DOHC, 20‑valve | |
| Aspiration | Turbocharged with intercooler | |
| Bore × stroke | 83.0 mm × 93.0 mm | |
| Power output | 250 hp (184 kW) @ 5,000 rpm | |
| Torque | 258 lb-ft (350 Nm) @ 2,400 rpm | |
| Fuel system | Bosch Motronic 4.4 electronic fuel injection | |
| Emissions standard | Euro 3 | |
| Compression ratio | 9.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Mitsubishi TD04 (air-to-air intercooler) | |
| Timing system | Belt-driven dual overhead camshafts | |
| Oil type | SAE 5W-30 (semi-synthetic) | |
| Dry weight | 185 kg (est.) |
The turbocharger provides exhilarating mid-range power ideal for spirited driving but requires strict adherence to the 60,000-mile timing belt replacement interval and regular inspection of the turbo oil return line gasket to prevent bearing damage. SAE 5W-30 oil is recommended. The Bosch Motronic system requires precise sensor function. Catalytic converter models mandate unleaded fuel. Ignition timing and boost pressure are critical for performance and emissions.
Oil Specs: Requires SAE 5W-30 specification (Volvo Workshop Manual 2006). Modern semi-synthetics meeting ACEA A3/B3 or A3/B4 are acceptable.
Emissions: Formal Euro 3 certification applies to all models for applicable markets (EU Regulation (EC) No 715/2007).
Power Ratings: Measured under SAE net horsepower standards (post-1972). Figures represent engine output with accessories (Volvo Technical Data Sheet 2002).
Volvo Workshop Manual (2006 Edition)
Volvo Technical Data Sheet (2002)
Volvo Service Bulletin 5254T3-14
SAE International: J1349 Engine Power Test Code
The Volvo B 5254 T3 was used across Volvo's P2 platform with transverse mounting. This engine received no significant platform-specific adaptations between sedan, wagon, and SUV variants, though turbocharger and intercooler piping layouts were identical. All applications 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 belt cover (Volvo Workshop Manual 2006). The code will read "B5254T3". Visual identification: Cast-iron block, black plastic camshaft cover, and prominent Mitsubishi TD04 turbocharger with top-mounted intercooler visible in the engine bay. Critical differentiation from the B5254T2: The B5254T3 has a higher power output (250 hp vs. 210 hp) and may have different ECU mapping or boost pressure settings.
The B 5254 T3's primary reliability risk is turbocharger oil return line gasket failure, with elevated incidence in high-mileage or heat-soaked engines. Volvo service data indicates this was a frequent cause of oil leaks and turbo damage, while owner club surveys highlight ignition coil and timing belt issues as secondary concerns. Infrequent maintenance and neglect make regular inspection and adherence to OEM service intervals critical.
Analysis derived from Volvo technical bulletins (2001-2007) and Volvo Owners Club failure statistics (2010-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VOLVO B-5254-T3.
Comprehensive technical documentation and regulatory references
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VOLVO Official Site
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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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