Standard Ignition BSD40 Blind Spot Detection System Warning Sensor

Brand Standard Ignition BSD40
Connector Gender Female
Connector Quantity 1
Terminal Gender Male
Terminal Quantity 8
Fits Ford and Lincoln · 5 vehicles

OE direct replacement. Direct-fit design ensures proper fit, form, and function for easier installation.

Quality-tested construction. Built and validated to deliver reliable performance and confidence.

Female connector. Features one connector with eight male terminals for secure electrical connection.

Cross-references 861-055, BSN40 and BSW40 for the same application. See all 4.

$265.31Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Order total $265.31
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

OE-Style Blind Spot Warning Sensor

Standard Ignition BSD40 is a direct-fit blind spot detection system warning sensor for select Ford and Lincoln vehicles. It is built for proper fit, form, and function, with OE-style construction that supports straightforward installation and dependable operation.

Compatible with 2018 Ford EcoSport and 2017-2018 Lincoln Continental and Lincoln MKZ, BSD40 is designed for vehicles that rely on blind spot monitoring to alert the driver to nearby traffic in adjacent lanes.

Key Features

  • Direct-fit OE replacement for the blind spot detection warning sensor
  • Female connector with 1 connector interface
  • 8 male terminals for vehicle-specific electrical connection
  • Built to stringent quality standards at a certified facility
  • Uses durable materials selected for demanding underbody and rear-corner conditions
  • Extensively tested for performance and reliability

Detailed Description

Standard Ignition BSD40 is engineered as an OE replacement sensor for blind spot detection systems on the Ford EcoSport, Lincoln Continental, and Lincoln MKZ. The part number BSD40 is intended to restore proper blind spot warning function when the original sensor is damaged, malfunctioning, or no longer communicating correctly with the vehicle’s driver-assist system. Its direct-fit design helps maintain the original connector style and terminal layout for a clean replacement on the applicable vehicle platform.

This part cross-references Monroe Shocks & Struts (e.g., 861-055, BSN40) for the same application.

What It Helps Fix

  • Blind spot warning light or alert not operating correctly
  • Fault codes related to the blind spot detection sensor circuit
  • Intermittent lane-change warning performance
  • Damage from impact, corrosion, or moisture exposure near the rear sensor location
  • Electrical connection issues at the sensor connector

Installation Notes and Tips

Verify vehicle fitment by year and model before installation. BSD40 uses a female connector and 8 male terminals, so the replacement should match the original sensor connection exactly. After installation, clear any stored diagnostic trouble codes and confirm blind spot system operation according to the vehicle service procedure.

Quality Assurance

Standard Ignition manufactures this sensor to stringent quality standards in a certified facility and validates it through extensive testing for proper performance and reliability. The OE-style replacement design is intended to support correct fitment and consistent operation on the listed Ford and Lincoln applications.

This part fits 5 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2018FordEcoSportN/A
2018LincolnContinentalN/A
2018LincolnMKZN/A
2017LincolnContinentalN/A
2017LincolnMKZN/A
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
861-055BSN40BSW40HP5Z14C689B