Delphi AS10271 Ignition Knock (Detonation) Sensor

Delphi AS10271 Knock Sensor for Nissan and INFINITI

Delphi AS10271 is an ignition knock (detonation) sensor built for direct-fit replacement on a wide range of Nissan and INFINITI applications. It uses a bolt-on mounting style, a rectangular female connector, and a 2-terminal blade connection for straightforward OE-style service.

With OE heritage built into every aftermarket part, Delphi draws on more than 100 years of original equipment experience. That background is reflected in the sensor’s fit, connector design, and application coverage for vehicles such as Nissan Frontier, Sentra, Altima, and Pathfinder, plus INFINITI QX56.

Key Features

• Part number: AS10271
• Ignition knock (detonation) sensor for emission control and engine management systems
• Bolt-on mounting type for secure installation
• 1 rectangular female connector with 2 male blade terminals
• Package contents: ignition knock sensor and instruction sheet
• OE-based design from Delphi, a supplier to major automakers

Detailed Description

Delphi AS10271 is engineered for vehicles that rely on accurate knock detection to help the engine control module adjust timing and maintain smooth operation. This sensor is a direct replacement choice for many Nissan and INFINITI models, including 2005-2019 Nissan Frontier, 2003-2012 Nissan Sentra, 2002-2006 Nissan Altima, 2005-2010 Nissan Pathfinder, and 2004-2010 INFINITI QX56. The AS10271 part number is also referenced in aftermarket cross listings for the same application.

This part cross-references Standard Ignition KS214 for the same application.

What It Helps Address

• Knock sensor fault codes
• Audible pinging or detonation under load
• Rough engine performance related to incorrect timing correction
• Check engine light conditions tied to knock sensor circuit issues
• Driveability problems on Nissan Frontier, Sentra, Altima, Pathfinder, and related models

Installation Notes and Tips

• Verify connector shape, terminal count, and mounting style before installation.
• Inspect the harness connector for corrosion, bent terminals, or damaged locking tabs.
• Follow the included instruction sheet and service manual procedures for torque and placement.
• Confirm vehicle-specific fitment for your exact year and engine configuration before ordering.

Quality Assurance

Delphi builds this sensor using OE experience and application knowledge developed through long-term supplier relationships with major automakers. That OE-based approach supports consistent fit and dependable signal performance across the listed Nissan and INFINITI applications.