Fuel injection system. ALFA 2.2 JTS, CAMSHAFT SENSOR ORIGINAL is a high-quality camshaft position sensor part designed to fit your vehicle perfectly. Identified by OE reference 55187973, this part offers a seamless fit and dependable performance. Crafted from durable materials made for long-term use, this brand-new Original FIAT GROUP Equipment ensures your vehicle remains in peak condition and performs exactly as intended.