O2 Sensor for BMW 3 (E21) 1975–1984 323 i (2.3 L / | CP247

O2 Sensor for BMW 3 (E21) 1975–1984 323 i (2.3 L / 105 kW / 143 hp) M20 B23 (236EA) — what you need to know

Finding the right o2 sensor for your BMW 3 (E21) 1975–1984 323 i (2.3 L / 105 kW / 143 hp) M20 B23 (236EA) is essential for safe and reliable driving. We offer a wide selection from 24+ trusted brands, all with TecDoc-verified fitment for your specific vehicle.

When choosing o2 sensor for your BMW 3 (E21) 1975–1984 323 i (2.3 L / 105 kW / 143 hp) M20 B23 (236EA), consider factors like OEM vs aftermarket quality, material specifications, and your driving conditions. OEM parts match original specifications exactly, while premium aftermarket brands like Bosch, TRW, and Febi Bilstein often offer comparable quality at lower prices.

All o2 sensor listed on this page are confirmed compatible with BMW 3 (E21) 1975–1984 323 i (2.3 L / 105 kW / 143 hp) M20 B23 (236EA). Our fitment data is sourced from TecDoc, the industry-standard European automotive parts database. If you are unsure about compatibility, check the OE part number on your existing component and use our cross-reference search.