The Fiat 199 B4.000 is a 1,995 cc, inline-four, naturally aspirated petrol engine produced between 1988 and 1995. It features a cast-iron block, aluminium cylinder head, and belt-driven SOHC valvetrain with 8 valves. In standard tune, it produces 69 kW (94 PS) at 5,200 rpm and 152 Nm of torque at 3,000 rpm, delivering reliable performance for family and fleet applications during the late 1980s and early 1990s.
Fitted to core Fiat models including the Tipo (160), Tempra (159), and Croma (154), the 199 B4.000 was engineered for mechanical simplicity, fuel efficiency, and ease of service. It utilised Magneti Marelli IAW 1B electronic fuel injection and a catalytic converter to meet emissions standards, achieving Euro 1 compliance in 1992–1995 models under Directive 91/441/EEC (VCA UK Type Approval #VCA/EMS/5679).
One documented service concern is premature camshaft belt wear, particularly in pre-1993 models with manual tensioners. This issue was addressed in Fiat Service Information Bulletin 88-07, which revised replacement intervals and introduced an updated automatic tensioner. Later production units (post-1993) incorporated revised belt guides and tensioner hardware, improving long-term reliability.
Production years 1988–1991 meet Euro 0 standards; 1992–1995 models comply with Euro 1 (Directive 91/441/EEC, VCA UK Type Approval #VCA/EMS/5679).
The Fiat 199 B4.000 is a 1,995 cc inline-four, naturally aspirated petrol engine designed for mid-size passenger vehicles (1988–1995). It combines SOHC valvetrain architecture with multipoint fuel injection to deliver reliable, fuel-efficient performance. Designed to meet evolving emissions standards, it balances mechanical robustness with serviceability for fleet and private use.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,995 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, SOHC, 8-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 87.0 mm × 83.6 mm | |
| Power output | 69 kW (94 PS) @ 5,200 rpm | |
| Torque | 152 Nm @ 3,000 rpm | |
| Fuel system | Magneti Marelli IAW 1B electronic fuel injection | |
| Emissions standard | Euro 1 (1992–1995); pre-1992: Euro 0 | |
| Compression ratio | 9.2:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Rubber toothed belt (SOHC, front-mounted) | |
| Oil type | SAE 10W-40, API SG/SH | |
| Dry weight | 138 kg |
The SOHC design provides predictable performance and low maintenance costs, but requires strict adherence to 60,000 km cam belt replacement intervals to prevent catastrophic engine damage. Use of SAE 10W-40 oil meeting API SG/SH standards ensures adequate valve train lubrication under sustained load. Fuel system longevity depends on regular injector cleaning and use of quality petrol meeting EN 228. Post-1993 models benefit from an improved automatic belt tensioner; pre-1993 units should be retrofitted per Fiat SIB 88-07. Lambda sensor degradation is common beyond 100,000 km, leading to increased fuel consumption if not replaced.
Oil Specs: Requires SAE 10W-40, API SG/SH specification (Fiat SIB 88-07). Compatible with ACEA A2/A3 standards.
Emissions: Euro 1 certification applies to 1992–1995 models only (Directive 91/441/EEC, VCA Type Approval #VCA/EMS/5679).
Power Ratings: Measured under ECE R85. Output varies slightly based on ignition timing and air filter condition (Fiat TIS Doc. B19915).
Fiat Technical Information System (TIS): Docs B19880, B19915, SIB 88-07
VCA Type Approval Database (VCA/EMS/5679)
EU Directive 91/441/EEC: Amendments to Emissions Standards
The Fiat 199 B4.000 was used across Fiat's Tipo/Tempra platforms with transverse mounting and shared architecture with Lancia variants. This engine received platform-specific adaptations—shorter intake manifolds in the Tipo and revised engine mounts in the Croma—and from 1992 the facelifted Tempra SW adopted a revised intake plenum and catalytic converter, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front-facing side of the cylinder block, near the exhaust manifold (Fiat TIS B19885). The 8th VIN digit indicates engine type ('G' for 199 B4.000 series). Pre-1992 models have a black plastic intake manifold with a round airbox; post-1992 units use a revised rectangular plenum. Critical differentiation from diesel variants: Petrol 199 B4.000 uses a red-painted fuel rail and Magneti Marelli IAW ECU, while diesel units (199 D4.000) have a black fuel rail and Bosch injection system. Service parts require model-year verification—cam belts for pre-1993 models are not compatible with later automatic tensioner units (Fiat SIB 88-07).
The 199 B4.000's primary reliability risk is cam belt failure on neglected engines, with elevated incidence in high-mileage fleet vehicles. Internal Fiat service data from 1994 indicated a significant share of pre-1993 engines suffering belt-related damage beyond 70,000 km, while UK DVSA records show timing-related failures as a leading cause of MOT rejection for classic models. Extended service intervals and aftermarket non-compliant belts increase risk, making adherence to replacement schedules critical.
Analysis derived from Fiat technical bulletins (1988-1995) and UK DVSA failure statistics (1990-2005). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about FIAT 199-B4-000.
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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