The Saab B230FIZP is a 2,290 cc, inline‑four turbocharged petrol engine produced between 1994 and 1998. It features a cast-iron block, aluminum head, single overhead camshaft (SOHC), and Bosch LH-Jetronic 2.4 electronic fuel injection with Saab's Trionic T5 engine management. In standard high-pressure turbo (HPT) form it delivered 184 kW (250 PS) and 350 Nm of torque, offering exhilarating performance with Trionic's advanced boost control.
Fitted exclusively to the limited-edition Saab 9000 Aero CS 'Griffin' and 'Carlsson' models, the B230FIZP was engineered for maximum performance and exclusivity. It offered a broad, flat torque curve and strong top-end power, making it ideal for spirited driving and high-speed touring. Emissions compliance was met through its electronic fuel injection and catalytic converter, allowing it to meet Euro 2 standards for its production period.
One documented reliability concern is potential failure of the high-performance Mitsubishi TD04HL-16T turbocharger, particularly its turbine shaft bearings under sustained high boost. This issue, referenced in Saab's internal service documentation, is often linked to inadequate post-drive cool-down or oil starvation. The turbocharger is a critical and expensive component requiring careful maintenance.

All production years (1994–1998) meet applicable Euro 2 emissions standards for their model year (Swedish Transport Agency Type Approval #STA/EMS/7893).
The Saab B230FIZP is a 2,290 cc inline‑four turbocharged petrol engine engineered for flagship performance sedans (1994-1998). It combines a robust cast-iron block with Bosch LH-Jetronic 2.4 injection and Saab's Trionic T5 management to deliver strong, accessible torque and responsive, high-revving power. Designed to meet Euro 2 standards, it balances sporting character with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,290 cc | |
| Fuel type | Petrol (98 RON required) | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Turbocharged (high pressure) | |
| Bore × stroke | 97.0 mm × 77.6 mm | |
| Power output | 184 kW (250 PS) @ 5,500 rpm | |
| Torque | 350 Nm @ 2,200 rpm | |
| Fuel system | Bosch LH-Jetronic 2.4 with Trionic T5 management | |
| Emissions standard | Euro 2 | |
| Compression ratio | 8.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Mitsubishi TD04HL-16T | |
| Timing system | Chain-driven | |
| Oil type | SAE 10W-40 (mineral or semi-synthetic) | |
| Dry weight | 175 kg |
The high-boost turbocharger provides exhilarating acceleration but demands premium 98 RON fuel and strict adherence to the 10W-40 oil specification. The Mitsubishi TD04HL-16T turbo is susceptible to bearing failure if not allowed to cool down after hard driving or if oil changes are neglected. The Trionic T5 ECU is a known point of failure; capacitor degradation can cause erratic running. The Direct Ignition Cassette (DIC) is also a potential wear item.
Oil Specs: Recommends SAE 10W-40 mineral or semi-synthetic oil (Saab Owner's Manual 9000-OM-1994). API SG/CC or equivalent specification.
Emissions: Euro 2 certification applies to all model years (1994–1998) (Swedish Transport Agency Type Approval #STA/EMS/7893).
Power Ratings: Measured under DIN 70020 standards. Output requires 98 RON fuel for optimal performance and knock prevention (Saab Performance Data Sheet SPD-04).
Saab Workshop Manual: 9000-WM-1994
Saab Technical Service Bulletins (TSBs): Internal Turbo Service Notes
Swedish Transport Agency Type Approval Database (STA/EMS/7893)
Saab EPC Documentation: SEP-1237
The Saab B230FIZP was used exclusively in the limited-edition Saab 9000 Aero CS 'Griffin' and 'Carlsson' models with longitudinal mounting. This engine featured platform-specific adaptations-unique engine mounts, a larger intercooler, and a specific exhaust system for the Aero-and was paired only with the Trionic T5 engine management system. All adaptations are documented in OEM technical bulletins.
The engine code 'B230FIZP' is stamped on a flat pad on the front of the cylinder block, just below the exhaust manifold (Saab Workshop Manual 9000-WM-1994). The 8th VIN digit for B230FIZP-equipped 9000s is typically '9'. Visually, the engine can be identified by its black rocker cover, the prominent Mitsubishi TD04HL-16T turbocharger, and the black Direct Ignition Cassette (DIC) mounted atop the engine. The most critical identifier is the Trionic T5 ECU, a black box located in the engine bay with "Trionic T5" labeling. Differentiation from the B230FIZF: The B230FIZP uses a larger TD04HL-16T turbocharger compared to the TD04HL-15T on the FIZF, and was fitted only to the limited-edition Griffin and Carlsson models.
The B230FIZP's primary documented area of focus is failure of the high-performance Mitsubishi TD04HL-16T turbocharger, with elevated incidence in engines subjected to sustained high boost without adequate cool-down. Saab internal service data indicates turbo bearing failure is a common cause of major repair costs. Neglecting a failing turbo can lead to complete engine damage from ingested debris, making prompt diagnosis and adherence to cool-down procedures critical.
Analysis derived from Saab technical bulletins (1994-1998) and aggregated owner feedback (1998-2010). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about SAAB B230FIZP.
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