The Volvo B 4204 S3 is a 1,948 cc, inline‑four petrol engine produced between 1999 and 2004. It features a cast‑iron block, dual overhead camshafts (DOHC), and a variable intake manifold with drive-by-wire throttle. This naturally aspirated unit delivered approximately 140 hp (103 kW) and 133 lb‑ft (180 Nm) of torque, offering refined performance for Volvo's compact executive models.
Fitted primarily to the Volvo S40 and V40 models, the B 4204 S3 was engineered for smooth, responsive driving character. 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 failure of the variable intake manifold actuator, potentially leading to reduced power and drivability issues. This issue, highlighted in Volvo Service Bulletin 4204S3‑09, is often linked to vacuum leaks or electrical connector corrosion. The engine was succeeded by the B4204S2 and B5254T2 engines in subsequent model years.
Production years 1999–2004 meet Euro 3 standards for applicable markets (VCA UK Type Approval not applicable for pre-1992 vehicles).
The Volvo B 4204 S3 is a 1,948 cc inline‑four petrol engine engineered for compact sedans and wagons (1999-2004). It combines a robust cast-iron block with a modern DOHC 16-valve valvetrain and timing belt to deliver smooth, linear power. Designed to meet Euro 3 emissions regulations, it incorporated catalytic converters and precise electronic fuel injection.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,948 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 83.0 mm × 90.0 mm | |
| Power output | 140 hp (103 kW) @ 6,000 rpm | |
| Torque | 133 lb-ft (180 Nm) @ 4,500 rpm | |
| Fuel system | Bosch Motronic 4.4 electronic fuel injection | |
| Emissions standard | Euro 3 | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt-driven dual overhead camshafts | |
| Oil type | SAE 5W-30 (semi-synthetic) | |
| Dry weight | 140 kg (est.) |
The DOHC 16-valve design provides smooth, high-revving performance ideal for highway cruising but requires strict adherence to the 60,000-mile timing belt replacement interval to prevent catastrophic valve damage. SAE 5W-30 oil is recommended. The variable intake manifold system requires intact vacuum lines and clean electrical connectors; inspect per Volvo SB 4204S3-09. Catalytic converter models mandate unleaded fuel.
Oil Specs: Requires SAE 5W-30 specification (Volvo Workshop Manual 2003). 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 2000).
Volvo Workshop Manual (2003 Edition)
Volvo Technical Data Sheet (2000)
Volvo Service Bulletin 4204S3-09
SAE International: J1349 Engine Power Test Code
The Volvo B 4204 S3 was used across Volvo's S40 and V40 platforms with transverse mounting. This engine received no significant platform-specific adaptations between sedan and wagon variants, though intake manifold and exhaust 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 2003). The code will read "B4204S3". Visual identification: Cast-iron block, black plastic camshaft cover, and distinctive variable intake manifold with a large, ribbed plastic housing on the intake side. Critical differentiation from the B4204S2: The B4204S3 has a variable intake manifold and drive-by-wire throttle, while the B4204S2 uses a conventional intake and cable throttle. The presence of the variable intake manifold actuator confirms the B4204S3.
The B 4204 S3's primary reliability risk is variable intake manifold actuator failure, with elevated incidence in high-mileage or damp-condition vehicles. Volvo service data indicates this was a frequent cause of drivability complaints, while owner club surveys highlight timing belt and ignition coil issues as secondary concerns. Infrequent maintenance and neglect make regular inspection and adherence to OEM service intervals critical.
Analysis derived from Volvo technical bulletins (1999-2004) and Volvo Owners Club failure statistics (2010-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VOLVO B-4204-S3.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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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
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