NTK 27045 Air / Fuel Ratio Sensor - Upstream
OE Quality 60-Day Returns
NTK
 Direct Fit 5-Wire A/F Sensor

NTK 27045 Air / Fuel Ratio Sensor - Upstream

Brand NTK 27045
Position Upstream
Wiring Harness Length 24.7500
Sensor Type Heated
Thread Length 0.38
Universal Or Specific Fit Specific
Wire Quantity 5
Thread Diameter 18.000
Mounting Bracket Included No
Product line Direct Fit 5-Wire A/F Sensor
Fits Jeep and Ram · 22 vehicles

Direct-fit design. Specific-fit replacement for straightforward sensor matching.

Heated sensor. Built for faster operating response and stable signal control.

OE-equivalent construction. Matches original fit, form, and function for the application.

Cross-references 68146231AB for the same application. See all 1.

$127.03Free shipping
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Order total $127.03
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Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Air / Fuel Ratio Sensor options

Direct-Fit Air/Fuel Ratio Sensor

NTK 27045 is a specific-fit, heated air/fuel ratio sensor built for upstream applications. It uses a 5-wire design and OE-equivalent construction to match the original sensor’s fit, form, and function.

  • Specific-fit replacement for direct installation
  • Heated sensor design for faster operating response
  • 5-wire configuration for the correct signal setup
  • 18 mm thread diameter with 0.38 thread length
  • 24.75 in. harness length for application-specific routing

Fitment and Application Details

Compatible with Jeep Grand Cherokee upstream applications for 2014-2021, including 2021 Jeep Grand Cherokee, upstream, and 2014-2020 Jeep Grand Cherokee, upstream. Also fits Ram ProMaster 1500 upstream for 2014-2017, Ram ProMaster 2500 upstream for 2014-2018, and Ram ProMaster 3500 upstream for 2014-2018. Fitment notes include B1S1 and vehicles equipped with one upstream sensor only where listed.

This part cross-references Monroe Shocks & Struts (e.g., 68146231AB) for the same application.

What It Helps Address

  • Faulty air/fuel ratio sensor readings
  • Check engine lights related to upstream sensor performance
  • Incorrect fuel control caused by a worn sensor
  • Driveability issues tied to inaccurate exhaust feedback

Installation Notes and Quality

Use the vehicle’s fitment notes to confirm upstream placement and sensor count before installation. The sensor is a specific-fit design, and the mounting bracket is not included. NTK states these oxygen sensors are extensively tested during manufacturing and built to meet or exceed OE specifications.

NTK 27045 is part of the Direct Fit 5-Wire A/F Sensor line, which focuses on application-specific coverage and OE-style replacement for import and domestic vehicles.

Related reading

This part fits 22 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypePositionNotes
2021JeepGrand Cherokee3.0LV6DIESELUpstreamOE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2020JeepGrand Cherokee3.0LV6DIESELUpstreamB1S1; Equipped w/ 1 Upstream Sensor Only; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2019JeepGrand Cherokee3.0LV6DIESELUpstreamB1S1; Equipped w/ 1 Upstream Sensor Only; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2018JeepGrand Cherokee3.0LV6DIESELUpstreamB1S1; Equipped w/ 1 Upstream Sensor Only; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2018RamProMaster 25003.0LL4DIESELUpstreamB1S1; Equipped w/ 1 Upstream Sensor Only; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2018RamProMaster 35003.0LL4DIESELUpstreamB1S1; Equipped w/ 1 Upstream Sensor Only; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2017JeepGrand Cherokee3.0LV6DIESELUpstreamB1S1; Equipped w/ 1 Upstream Sensor Only; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2017RamProMaster 15003.0LL4DIESELUpstreamB1S1; Equipped w/ 1 Upstream Sensor Only; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2017RamProMaster 25003.0LL4DIESELUpstreamB1S1; Equipped w/ 1 Upstream Sensor Only; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2017RamProMaster 35003.0LL4DIESELUpstreamB1S1; Equipped w/ 1 Upstream Sensor Only; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2016JeepGrand Cherokee3.0LV6DIESELUpstreamB1S1; Equipped w/ 1 Upstream Sensor Only; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2016RamProMaster 15003.0LL4DIESELUpstreamB1S1; Equipped w/ 1 Upstream Sensor Only; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2016RamProMaster 25003.0LL4DIESELUpstreamB1S1; Equipped w/ 1 Upstream Sensor Only; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2016RamProMaster 35003.0LL4DIESELUpstreamB1S1; Equipped w/ 1 Upstream Sensor Only; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2015JeepGrand Cherokee3.0LV6DIESELUpstreamB1S1; Equipped w/ 1 Upstream Sensor Only; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2015RamProMaster 15003.0LL4DIESELUpstreamB1S1; Equipped w/ 1 Upstream Sensor Only; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2015RamProMaster 25003.0LL4DIESELUpstreamB1S1; Equipped w/ 1 Upstream Sensor Only; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2015RamProMaster 35003.0LL4DIESELUpstreamB1S1; Equipped w/ 1 Upstream Sensor Only; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2014JeepGrand Cherokee3.0LV6DIESELUpstreamB1S1; Equipped w/ 1 Upstream Sensor Only; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2014RamProMaster 15003.0LL4DIESELUpstreamB1S1; Equipped w/ 1 Upstream Sensor Only; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2014RamProMaster 25003.0LL4DIESELUpstreamB1S1; Equipped w/ 1 Upstream Sensor Only; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
2014RamProMaster 35003.0LL4DIESELUpstreamB1S1; Equipped w/ 1 Upstream Sensor Only; OE Equivalent Design; Direct Fit 5-Wire A/F Sensor
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
68146231AB