The Volvo B4204T19 is a 1,984 cc, inline‑four turbocharged petrol engine produced between 2004 and 2007. It features an aluminum block and head, dual overhead camshafts (DOHC), and sequential multi-point fuel injection. This unit delivered 125 kW (170 PS) and 240 Nm of torque, offering a compelling blend of efficiency and spirited performance for its class.
Fitted primarily to the S40 and V50 models, the B4204T19 was engineered for responsive, agile driving with an emphasis on low-to-mid range torque. Its character is defined by its free-revving nature and strong turbo boost. Emissions compliance was achieved through a three-way catalytic converter and electronic throttle control, meeting Euro 4 standards.
One documented concern is premature failure of the Positive Crankcase Ventilation (PCV) system's flame trap, which can lead to excessive oil consumption and vacuum leaks. This issue, highlighted in Volvo's Technical Service Bulletin TJ 31522, is often linked to carbon buildup restricting airflow. In 2006, Volvo introduced a revised, more robust flame trap assembly to address this weakness.
Production years 2004–2007 meet Euro 4 emissions standards (VCA UK Type Approval #VCA/EMS/4578).
The Volvo B4204T19 is a 1,984 cc inline‑four turbocharged petrol engine engineered for compact sedans and wagons (2004-2007). It combines DOHC architecture with turbocharging to deliver responsive, torquey performance. Designed to meet Euro 4 standards, it balances sporty character with everyday drivability and fuel efficiency.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,984 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 81.0 mm × 96.0 mm | |
| Power output | 125 kW (170 PS) @ 5,000 rpm | |
| Torque | 240 Nm @ 1,800–5,000 rpm | |
| Fuel system | Sequential multi-point fuel injection | |
| Emissions standard | Euro 4 | |
| Compression ratio | 8.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Garrett GT1544V with wastegate | |
| Timing system | Belt-driven camshafts | |
| Oil type | SAE 5W-30 (Volvo VCC 95200312) | |
| Dry weight | 140 kg (approx.) |
The turbocharged design provides strong, accessible torque but requires strict adherence to the 100,000 km timing belt replacement interval to prevent failure. The PCV flame trap is prone to clogging; listen for vacuum leaks and monitor oil consumption. Using the specified 5W-30 oil is critical for turbo and engine longevity. Pre-2006 engines should have the flame trap upgraded per Volvo TSB TJ 31522 to prevent oil consumption issues.
Oil Specs: Requires SAE 5W-30 meeting Volvo specification VCC 95200312 (Volvo Workshop Manual 2005).
Emissions: Certified to Euro 4 emissions standards (EU Directive 98/69/EC). VCA UK Type Approval #VCA/EMS/4578.
Power Ratings: Measured under SAE net standards (with accessories). Figures represent maximum output at the crankshaft (Volvo TDS-B4204).
Volvo Workshop Manual (2005 Edition)
Volvo Technical Data Sheet (TDS-B4204)
Volvo Technical Service Bulletin TJ 31522
EU Directive 98/69/EC (Euro 4 Standard)
The Volvo B4204T19 was used across Volvo's P1 Platform with transverse mounting. This engine received minor platform-specific adaptations-different engine mounts and accessory brackets between sedan and wagon-and from 2006 the PCV flame trap was revised, creating a key service part distinction. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat boss on the front of the cylinder block, near the alternator (Volvo Workshop Manual 2005). The code will read "B4204T19". Visual identification: Aluminum block, silver "T4" badge on the plastic intake manifold, Garrett turbocharger on the exhaust manifold. Differentiate from the B4154T2 by displacement (2.0L vs 1.5L); the B4154T2 block is visibly smaller. Pre-2006 engines have a smooth flame trap housing; post-2006 units have a ribbed, revised housing.
The B4204T19's primary reliability risk is PCV flame trap failure, with elevated incidence in high-mileage or neglected vehicles. Volvo service bulletins from the era highlight this as a common cause of oil consumption and vacuum leaks, while aggregated repair data consistently shows that replacing the flame trap with the revised part is a highly effective preventative measure for long-term drivability.
Analysis derived from Volvo technical service bulletins (2004-2007) and aggregated data from Volvo Technical Information System (TIS) repair logs (2010-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VOLVO B-4204-T19.
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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