The Saab B230FIZO is a 2,290 cc, inline‑four turbocharged petrol engine produced between 1990 and 1993. It features a cast — iron block, aluminum head, SOHC 8 — valve design, and Bosch LH — Jetronic 2.4 electronic fuel injection with an integrated knock sensor and Saab's Automatic Performance Control (APC). This engine, part of Saab's H engine family, delivered 147 kW (200 PS) and 285 Nm of torque, positioned between the B230FID and the high — boost B230FIZE.
Fitted primaril…
All production years (1990–1993) meet Euro 1 standards .
The Saab B230FIZO is a 2,290 cc inline‑four turbocharged petrol engine engineered for performance-oriented sedans and coupes (1990-1993). It combines electronic fuel injection with a single turbocharger and Saab's APC system to deliver a strong, accessible power band. Designed to meet Euro 1 standards, it offers a compelling blend of performance and relative reliability for its era.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,290 cc | |
Fuel type | Petrol (95 RON min, 98 RON recommended) | |
Configuration | Inline‑4, SOHC, 8‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 97.0 mm × 77.6 mm | |
Power output | 147 kW (200 PS) | |
Torque | 285 Nm @ 2,200 rpm | |
Fuel system | Bosch LH-Jetronic 2.4 with APC | |
Emissions standard | Euro 1 | |
Compression ratio | 8.7:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single turbo (Garrett T25) | |
Timing system | Chain-driven | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 156 kg |
The Saab B230FIZO was used as the high-performance turbocharged petrol engine in Saab's 900 Turbo 16 S and select 9000 models with longitudinal mounting. This engine received platform-specific adaptations-including unique engine mounts for the 900 and specific ECU mapping for the 9000-and is calibrated differently from the higher-output B230FIZE, creating distinct performance characteristics. All adaptations are documented in OEM technical bulletins.
Engine Finders UK Ltd, which operates EngineCode.uk, can pass your enquiry to engine suppliers in the UK. The service is for vehicles in the United Kingdom, with UK delivery or fitting. This is a commercially connected service, and sending an enquiry does not confirm diagnosis or compatibility.
Diagnostic reminder: If a technician has recommended replacing the engine, you can send an enquiry to engine suppliers in the UK. Confirm the diagnosis first: an engine-code record does not diagnose a fault.
Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from Saab technical bulletins (1990-1993) and aggregated owner club maintenance reports. 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
The B230FIZO offers a good balance of performance and potential reliability. Its main vulnerabilities are age-related, such as vacuum hose degradation and APC solenoid failures. With regular oil changes, use of premium fuel, and proactive replacement of known wear items, it can provide many years of service. It is generally considered more reliable than the higher-strung B230FIZE.
The most common issues are vacuum leaks in the boost control system, failures of the APC solenoid valve leading to boost control problems, and clogging of the turbocharger oil feed lines. Exhaust manifold gasket failure is also a frequent complaint. These are documented in Saab service bulletins and widely discussed in owner communities.
The B230FIZO was primarily used in the Saab 900 Turbo 16 S from 1991 to 1993. It was also fitted to certain European-market variants of the Saab 9000 CD Turbo and CS Turbo during the same period, offering a 200 PS alternative to the standard 175 PS B230FID engine.
Aftermarket ECU tuning is common on the B230FIZO platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
Real-world fuel economy for the B230FIZO is typically around 11.0-13.0 L/100km (22-26 mpg UK) in mixed driving. Highway cruising can yield 8.5-9.5 L/100km (30-33 mpg UK), while aggressive city driving can push consumption to 15.0 L/100km (19 mpg UK) or higher, reflecting its performance nature.
No. Like all B230 variants, the Saab B230FIZO is a non-interference engine. If the timing chain were to fail, the pistons and valves would not collide, preventing catastrophic internal damage. This provides a valuable safety margin for this performance engine.
Saab originally specified SAE 10W-40 mineral or semi-synthetic oil. A high-quality 10W-40 or 15W-40 mineral oil, or a semi-synthetic meeting API SG/CC or higher specifications, is recommended. The critical factor is regular changes every 10,000 km to ensure turbocharger health and prevent sludge buildup in the oil feed lines.
Comprehensive technical documentation and regulatory references
EngineCode.uk is operated by Engine Finders UK Ltd. It provides engine-reference information and an optional commercial enquiry service. It is not an official manufacturer website. Check the record's sources and confirm vehicle-specific details before relying on it for parts, repairs or replacement.
Our editorial standard prioritises relevant manufacturer documentation and official regulatory sources. The sources and verification status for a record should be checked alongside the data.
A statement is not verified merely because a source is listed. Where supporting evidence is missing or conflicting, the record should identify that limitation. Please report unsupported or inconsistent information.
Transparency in gaps
A missing or unverified value does not mean the manufacturer has withheld it. We distinguish information not yet verified, information not available to us, and information explicitly not disclosed by the source.
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.
Records are subject to review and correction. Source links, dates and verification notes should be read with the technical information. Our Editorial and Sourcing Policy explains our standards and review process.
Found an error or missing source? Report a problem with this page. Include the field or statement concerned and a supporting source if available. You can also email corrections@enginecode.uk.
Copyright and permissions
Images and other material may be protected by copyright. Attribution does not by itself grant permission to reuse material. If you believe material on this site infringes your rights, contact copyrights@enginecode.uk with the page URL and details of your claim. We will review the material and take appropriate action.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
Our Privacy Policy explains how Engine Finders UK Ltd uses information from visits, vehicle lookups, enquiries and messages. Our Cookie Policy explains cookies and similar technologies and how to change your choices.
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.
Ownership and commercial services
EngineCode.uk is owned and operated by Engine Finders UK Ltd. Alongside our reference content, we offer an optional replacement-engine enquiry service through Engine Finders and may identify relevant services provided by businesses connected with us. These commercial connections are disclosed. Using an enquiry service is not required to read our reference content.
Engine Finders UK Ltd operates this website. Our optional enquiry service has a commercial purpose. Our Ownership and Commercial Disclosure explains the relationship between the reference website and that service. Participating suppliers pay a fee or subscription to participate on the network and receive quote requests.
Use this record as a starting point for identification. Specifications and vehicle applications may contain errors or omissions. Confirm the exact engine variant and compatibility using vehicle-specific documentation and a qualified supplier or technician.
All external links open in new tabs. Please verify current availability of resources.