Know when your Porsche's brake pads are running low with the Standard Ignition Disc Brake Pad Wear Sensor PWS186. Mounted at the brake caliper, it signals the dash when the friction material wears down to the sensor, giving you time to plan a pad service before metal-on-metal contact. It drops in as a direct-fit replacement for the 1984-1989 Porsche 911 and 1978-1979 Porsche 930 (All engines); it serves both the front and rear caliper positions, and most of these applications use two per vehicle.
- 100% tested: every wear sensor is checked for proper fit, form and function.
- OE-style connection: uses OE connectors and terminals for an accurate, water-tight connection to the vehicle wiring harness, with a single round connector and pin-plus-cylindrical terminals.
- Protected wiring: the direct-replacement harness comes with a protective sleeve to keep the wires from chafing and creating short circuits.
- Ready to route: grommets and wire clips are included on the 9.75 in (247.65 mm) harness for proper mounting and routing within the chassis.
- Durable resin: glass-reinforced plastic resin adds high-temperature and environmental resistance.
Country of origin: Hungary.
Interchange: WS386 · BWS586 · 94461221102 · Manufacturer part number PWS186
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this brake pad wear sensor do?
It monitors brake pad wear and triggers a dashboard warning when the friction material wears down to the sensor, so you can plan a pad replacement before the pads reach minimum thickness.
Does this fit my Porsche?
It's a direct-fit replacement for the 1984-1989 Porsche 911 and 1978-1979 Porsche 930 (All engines). Check the Buyer's Guide tab to confirm the match for your vehicle.
How many sensors do I need?
Most listed applications use two per vehicle. This listing is for one sensor, so order the quantity your vehicle calls for.
Where does it mount?
It mounts at the brake caliper and connects to the vehicle wiring harness via a single round connector, with grommets and clips on the 9.75 in harness for routing.
Will this fix my brake wear warning light?
If a worn or damaged wear sensor is the cause, replacing it addresses that. A brake warning can have other causes, so diagnose the source before ordering.
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