The Saab B230FIZAB is a 2,290 cc, inline‑five naturally aspirated petrol engine produced between 1994 and 1998. It features a cast iron block, aluminium head, single overhead camshaft (SOHC), and Bosch LH 2.4 fuel injection. This engine was designed for durability and smooth operation, delivering 110 kW (150 PS) and 210 Nm of torque for relaxed highway cruising.
Fitted primarily to the Saab 900 (NG) and 9000 models, the B230FIZAB was engineered for refined, reliable tran…
Production years 1994–1998 meet applicable EU emissions standards for passenger vehicles in effect during those model years (EU Directive 91/441/EEC, 94/12/EC).
The Saab B230FIZAB is a 2,290 cc inline‑five naturally aspirated petrol engine engineered for mid‑size sedans and coupes (1994-1998). It combines Bosch LH 2.4 fuel injection with a robust cast iron block to deliver smooth, linear power delivery and dependable everyday performance. Designed to meet contemporary EU emissions standards, it prioritizes reliability and refinement.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,290 cc | |
Fuel type | Petrol | |
Configuration | Inline‑5, SOHC, 10‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 90.0 mm × 72.0 mm | |
Power output | 110 kW (150 PS) @ 5,500 rpm | |
Torque | 210 Nm @ 3,000 rpm | |
Fuel system | Bosch LH 2.4 Jetronic | |
Emissions standard | EU Directive 91/441/EEC, 94/12/EC | |
Compression ratio | 9.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain-driven | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | Not specified in available OEM documentation |
The Saab B230FIZAB was used across Saab's 900 (New Generation) and 9000 platforms with longitudinal mounting. This engine received platform-specific adaptations-minor ECU tuning for different model weights and gearing-and no significant facelift revisions occurred during its production, ensuring broad parts interchangeability. All adaptations are documented in OEM technical bulletins.
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The B230FIZAB's primary reliability risk is crankshaft position sensor failure, with elevated incidence in high-mileage or heat-soaked engines. Saab service records frequently cite this as a cause for no-start conditions, while general owner feedback highlights the importance of cooling system maintenance. Neglecting coolant changes can lead to expensive head gasket failure.
Analysis derived from Saab technical bulletins (1994-1998) and aggregated owner repair data. Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
Yes, the B230FIZAB is generally considered a very reliable and robust engine when properly maintained. Its simple SOHC design and cast iron block contribute to its longevity. The most common failure point is the crankshaft position sensor, which is a relatively inexpensive and easy fix. Regular oil and coolant changes are paramount for ensuring a long service life.
The most frequent issues are crankshaft position sensor failure causing no-starts, oil leaks from the valve cover and crank seals, and Idle Air Control valve problems leading to rough idle. The most serious potential issue is head gasket failure, usually resulting from neglected cooling system maintenance.
The B230FIZAB engine was used in the naturally aspirated versions of the second-generation Saab 900 (often called New Generation or NG, produced 1994-1998) and the Saab 9000 (produced until 1997). It was fitted to various trim levels like the 900 CS, CD, and Convertible, as well as the 9000 CS and CD.
While not as common as tuning turbocharged Saab engines, the B230FIZAB can see modest gains. Basic modifications include a free-flowing exhaust and performance air filter. More significant power increases would require engine management remapping or conversion to a turbocharged setup, which is complex and costly. Its strength is reliability, not high performance.
Fuel economy is respectable for its era and configuration. Expect combined figures around 9.0-10.5 L/100km (27-25 mpg UK) in mixed driving. Highway cruising can yield figures closer to 7.5-8.5 L/100km (38-33 mpg UK). Actual consumption will vary significantly based on driving style, vehicle condition, and model weight.
Yes. The Saab B230FIZAB is an interference engine. If the timing chain were to fail or jump significantly, the pistons would collide with the open valves, causing severe internal engine damage. Fortunately, the timing chain is very durable and rarely fails if the engine is maintained.
Saab originally recommended SAE 10W-40 engine oil meeting API SG/CD or higher specifications. Modern, high-quality synthetic or semi-synthetic 10W-40 or 5W-40 oils that meet current API standards (like SN/SP) are excellent choices and can offer better protection, especially for older engines or in extreme temperatures.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
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.
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