NTK 24319 Air / Fuel Ratio Sensor - Upstream, Upstream Left or Upstream Right

Direct-Fit Air/Fuel Ratio Sensor

The NTK 24319 is a direct-fit heated air/fuel ratio sensor built for specific import applications. It uses a 5-wire design with an 18 mm thread diameter and a 33.5 in. harness length for OE-style replacement where the original sensor matches these specifications.

Key Features

• Direct-fit, specific application sensor for straightforward replacement.
• Heated 5-wire design for precise air/fuel monitoring.
• 18 mm thread diameter with 0.38 in. thread length.
• 33.5 in. wiring harness length for proper routing.
• Mounting bracket not included.

Detailed Description

NTK 24319 is part of the Direct Fit 5-Wire A/F Sensor line, which focuses on OE-style replacement with the correct connector, harness length, and sensor configuration for the listed applications. NTK applies ceramic sensor manufacturing expertise and extensive production testing to deliver fit, form, and function that align with OE specifications. This part cross-references Bosch 17276 and DENSO Auto Parts 234-5108 for the same application.

Compatible With Audi R8 upstream applications from 2008-2012 and 2014-2015, Porsche 911 upstream right and upstream left applications from 2007-2008, Porsche Boxster upstream right and upstream left applications from 2005-2008, Porsche Cayman upstream right and upstream left applications from 2006-2008, and Audi S6 upstream applications for 2007. Fitment notes include Bank 1 Sensor 1, Bank 2 Sensor 1, and OE equivalent design references where listed.

Common Replacement Reasons

• Fault codes related to air/fuel ratio sensing.
• Rough idle or inconsistent fuel control.
• Failed sensor response during emissions diagnostics.
• Harness or connector mismatch on a direct replacement.
• Sensor degradation from age and heat exposure.

Installation Notes

Verify the vehicle’s sensor location, bank, and connector style before installation. Match the upstream position and application notes exactly to the original part. Confirm thread diameter and harness length against the removed sensor to avoid fitment issues.

Quality Assurance

NTK states that its oxygen sensors are extensively tested during manufacturing and are engineered to meet or exceed OE specifications. The brand is part of the NGK family and is recognized as a major original equipment sensor supplier.