Standard Ignition AS399 Turbocharger Boost Sensor
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Standard Ignition

Standard Ignition AS399 Turbocharger Boost Sensor

Brand Standard Ignition AS399
Terminal Quantity 2
Connector Gender Female
Connector Quantity 1
Terminal Gender Male
Terminal Type Blade
Fits Volvo · 4 vehicles

Boost sensor. Monitors turbocharger pressure for precise engine management.

Blade terminals. Features a 2-terminal blade connection with a female connector.

Cross-references Standard Ignition AS399, 2-27118 and 12716304 for the same application. See all 5.

$229.27Free shipping
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Turbocharger Boost Sensor for Volvo 850

Standard Ignition AS399 is a turbocharger boost sensor built for direct-fit service on select Volvo applications. It uses a 2-terminal layout with a female connector, male blade terminals, and a single connector interface for straightforward replacement in the boost pressure circuit.

  • Turbocharger boost sensor for engine management and boost monitoring
  • 2 terminals with male blade terminal type
  • 1 female connector for OE-style electrical connection
  • Fits 1994-1997 Volvo 850
  • Standard Ignition AS399 replacement part number for service matching

Detailed Product Overview

This turbocharger boost sensor is intended for Volvo 850 models from 1994 through 1997 and is identified by part number AS399. It is used in the turbo system signal path to provide boost-related input to the vehicle’s control strategy. The connector and terminal configuration are specified for the application: one female connector, two male blade terminals, and a compact sensor interface suited to OE-style replacement work. This part cross-references AC Delco 2-27118 for the same application.

Common Replacement Reasons

  • Boost signal irregularities
  • Check engine light related to turbo pressure sensing
  • Intermittent turbo response or inconsistent boost control
  • Electrical connector or terminal wear at the sensor
  • Failed sensor output affecting engine management data

Installation Notes and Tips

Verify connector style and terminal layout before installation to confirm AS399 matches the original sensor. Inspect the harness connector for corrosion, bent terminals, or damaged locking tabs before connecting the new unit. After installation, clear any stored fault codes and confirm boost-related readings with a scan tool or diagnostic procedure appropriate for the vehicle.

Quality Assurance

Standard Ignition is a recognized aftermarket source for electrical and engine management components. AS399 is built to match the listed fitment and connector configuration for service replacement on Volvo 850 turbo applications.

Related reading

This part fits 4 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1997Volvo8502.3LL5N/A—
1996Volvo8502.3LL5N/A—
1995Volvo8502.3LL5N/A—
1994Volvo8502.3LL5N/A—
Directly replaces or cross-references 5 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Standard Ignition — AS3992-2711812716304EC1881MAPA189