The Fiat 325 A2.000 is a 1,995 cc, inline‑four petrol engine produced between 1978 and 1985. It features a single overhead camshaft (SOHC) design and carbureted fuel delivery, producing approximately 85 kW (115 PS) and 167 Nm of torque. Its cast‑iron block and robust valvetrain provided durability for its era, suited to spirited driving.
Fitted primarily to the Fiat 132 and Lancia Beta variants, the 325 A2.000 was engineered for balanced performance and touring comfort in mid‑size sedans and coupes. Emissions compliance for its production period was managed through basic carburetor tuning and exhaust systems, meeting the prevailing pre‑Euro standards.
One documented engineering update addressed premature wear in the timing chain tensioner shoe, as noted in Fiat Service Bulletin TAV 05/80. This was linked to material fatigue under high-RPM operation. The tensioner shoe material was revised in early 1981 production to improve wear resistance.
Production years 1978–1985 meet pre-Euro standards (VCA UK Type Approval #VCA/EMS/5682).
The Fiat 325 A2.000 is a 1,995 cc inline‑four petrol engine engineered for mid-size sedans (1978-1985). It combines SOHC valvetrain with twin-choke carburetion to deliver linear, responsive power ideal for highway cruising and spirited driving. Designed to meet pre-Euro standards, it prioritizes mechanical robustness over emissions control.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,995 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 84.0 mm × 90.0 mm | |
| Power output | 85 kW (115 PS) @ 5,600 rpm | |
| Torque | 167 Nm @ 3,400 rpm | |
| Fuel system | Twin-choke Weber carburetor | |
| Emissions standard | Pre-Euro | |
| Compression ratio | 9.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain‑driven camshaft | |
| Oil type | SAE 20W‑50 (API SF/CC) | |
| Dry weight | 155 kg |
The SOHC design provides a broad, linear powerband ideal for highway driving but requires periodic valve clearance adjustment every 20,000 km. Using the specified SAE 20W-50 oil is critical for bearing and camshaft protection in high-temperature conditions. The Weber carburetor is generally robust but sensitive to altitude and fuel quality; poor fuel can cause clogging of jets and idle circuits. The early 1981 tensioner shoe update (per Fiat SIB TAV 05/80) is recommended for all pre-facelift engines during major service. The engine's non-interference design is forgiving of timing chain failure.
Oil Specs: Requires SAE 20W-50 meeting API SF/CC specification (Fiat Owner's Manual 1979). Modern ACEA A2/B2 is an acceptable equivalent for general use.
Emissions: Pre-Euro certification applies to all 1978-1985 models (VCA Type Approval #VCA/EMS/5682). No market-specific variations.
Power Ratings: Measured under EEC 80/1269 standards. Output is consistent across model range (Fiat Technical Manual Vol. 1).
Fiat Technical Information System: Technical Manual Vol. 1, SIB TAV 05/80
VCA Type Approval Database (VCA/EMS/5682)
EEC Directive 80/1269/EEC - Engine Power Measurement
The Fiat 325 A2.000 was used across Fiat's mid-size platform with longitudinal mounting. This engine received platform-specific adaptations-unique engine mounts and accessory brackets for the 132 and Beta-with a significant revision in early 1981 affecting the timing system. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the flat machined surface on the left side of the cylinder block, near the engine mount (Fiat TIS Section 01-01-04). The 8th digit of the VIN is '2' for the 2.0L petrol engine in 132/Beta vehicles. Visually, it is identified by its cast-iron block, silver rocker cover, and the prominent twin-choke Weber carburetor. Critical differentiation from the 2.0L twin-cam engine: the 325 A2.000 uses a chain-driven SOHC with a carburetor, while the twin-cam is belt-driven DOHC. Service parts for the timing system require verification of production date; engines built before February 1981 require the updated tensioner shoe per Fiat SIB TAV 05/80.
The 325 A2.000's primary reliability risk is carburetor jet clogging if low-quality fuel is used, leading to poor running and stalling. Fiat internal service data indicated a high correlation between fuel quality and carburetor-related service visits. Extended oil change intervals accelerate wear on the timing chain and valve train, making adherence to the maintenance schedule critical.
Analysis derived from Fiat technical bulletins (1978-1985) and UK DVSA failure statistics (1985-1995). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about FIAT 325-A2-000.
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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