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Starting at low prices, AutoBuffy stocks multiple oxygen sensors from top OE-quality brands to fit your Ferrari 512 M. The oxygen sensor measures exhaust oxygen levels so the ECU can fine-tune the air-fuel mixture for clean, efficient combustion. A failing sensor forces the engine to guess, killing fuel economy, spiking emissions, and eventually damaging your catalytic converter.
The two biggest decisions are sensor position (upstream/downstream) and wire count, both of which must match your Ferrari 512 M's harness exactly. Beyond fitment, you'll choose between OE-identical direct-fit sensors and universal sensors that require splicing — direct-fit is almost always the better choice for a clean, reliable repair.
| Option | Best for | What you get |
|---|---|---|
| Upstream (Air-Fuel Ratio) Sensor | Restoring fuel trims and fuel economy on your Ferrari 512 M | Monitors pre-catalyst exhaust; directly controls ECU fueling corrections |
| Downstream (Monitor) Sensor | Fixing post-cat codes and emissions test failures on your Ferrari 512 M | Reads catalytic converter efficiency; triggers MIL if converter degrades |
| Direct-Fit OE-Style Sensor | Plug-and-play replacement with no wiring work on your Ferrari 512 M | Pre-terminated connector matches factory harness; no splicing or recalibration needed |
| Universal Wideband Sensor | Budget repair or custom tuning builds where exact fitment isn't available | Requires wire splicing; works across multiple applications but adds installation time |
Let the exhaust cool completely before starting, then spray the sensor threads with penetrating oil if the Ferrari 512 M has significant mileage or rust. Remove the old sensor with the dedicated oxygen sensor socket, thread the replacement in by hand first to avoid cross-threading, and snug it firmly — overtightening can crack the sensor body or damage the bung. Reconnect the harness, clear fault codes with your scanner, and run the engine through a full warm-up cycle to confirm the repair.