HomeAir and Fuel Delivery > FiltersBaldwin PA4443 Air Filter
Part #: PA4443

Baldwin PA4443 Air Filter

⚙️ 37 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Nissan and INFINITI, 370Z, QX50, Q40, Q60, EX37, G37, EX35, G25, 350Z, and G35
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Overview of Baldwin PA4443 Engine Air Filter

The Baldwin PA4443 engine air filter is designed for specific Infiniti and Nissan models, providing reliable air filtration to maintain engine performance. This filter is compatible with Infiniti G35, EX35, G37, QX50, and Nissan 350Z and 370Z vehicles.

  • Compatible with Infiniti G35, EX35, G37, QX50 and Nissan 350Z, 370Z
  • Dimensions: 7 1/8" length x 6 5/8" width x 1 5/16" height (181mm x 168.3mm x 33.3mm)
  • Replaces Nissan part number 16546-JK20A
  • Engine air filter designed for efficient air and fuel delivery
  • Durable construction to meet OEM specifications

Detailed Product Description

The Baldwin PA4443 engine air filter is engineered to fit a range of Infiniti and Nissan models, including the Infiniti G35, EX35, G37, QX50, and Nissan 350Z and 370Z. With precise dimensions of 7 1/8 inches in length, 6 5/8 inches in width, and 1 5/16 inches in height (181mm x 168.3mm x 33.3mm), this filter ensures a proper seal and fit within the air intake system. It replaces the Nissan OEM part number 16546-JK20A, providing a direct replacement option that maintains the original equipment standards for air filtration and engine protection.

Applications and Common Issues Addressed

  • Prevents engine damage caused by dust and debris entering the intake system
  • Helps maintain optimal engine performance and fuel efficiency
  • Reduces the risk of clogged air passages that can lead to reduced power
  • Supports proper air-fuel mixture for combustion stability
  • Minimizes engine wear due to contaminants

Installation Notes and Tips

  • Ensure the engine is off and cool before replacing the air filter
  • Remove the air filter housing cover carefully to avoid damage
  • Clean the air filter housing before installing the new Baldwin PA4443 filter
  • Verify the filter is seated properly to prevent air leaks
  • Consult the vehicle’s service manual for specific instructions related to Infiniti G35, EX35, G37, QX50, and Nissan 350Z, 370Z models

Quality Assurance and Warranty

Baldwin engine air filters are manufactured to meet or exceed OEM specifications, ensuring consistent filtration performance and durability. The PA4443 part number undergoes rigorous quality control to provide reliable engine protection. Warranty coverage details can be obtained from Baldwin or authorized distributors, typically covering defects in materials and workmanship.

BrandBaldwin
Part NumberPA4443
Fits"Infiniti G35, EX35, G37, QX50; Nissan 350Z, 370Z"
Height1 5/16
Height (mm)33.3
Length7 1/8
Length (mm)181
ReplacesNissan 16546-JK20A
Width6 5/8
Width (mm)168.3

This part fits 37 vehicles. Search below:

YearMakeModelBody TypeLitersCylindersPositionNotes
2020Nissan370Z3.7LV6N/AOE Number : 16546JK20A
2019Nissan370Z3.7LV6N/AOE Number : 16546JK20A
2018Nissan370Z3.7LV6N/AOE Number : 16546JK20A
2017INFINITIQX503.7LV6N/AOE Number : 16546JK20A
2017Nissan370Z3.7LV6N/AOE Number : 16546JK20A
2016INFINITIQX503.7LV6N/AOE Number : 16546JK20A
2016Nissan370Z3.7LV6N/AOE Number : 16546JK20A
2015INFINITIQ403.7LV6N/AOE Number : 16546-JK20A
2015INFINITIQ603.7LV6N/AOE Number : 16546JK20A
2015INFINITIQX503.7LV6N/AOE Number : 16546-JK20A
2015Nissan370Z3.7LV6N/AOE Number : 16546-JK20A
2014INFINITIQ603.7LV6N/AOE Number : 16546JK20A
2014INFINITIQX503.7LV6N/AOE Number : 16546JK20A
2014Nissan370Z3.7LV6N/AOE Number : 16546JK20A
2013INFINITIEX373.7LV6N/AOE Number : 16546jk20a
2013INFINITIG373.7LV6N/AOE Number : 16546JK20A
2013Nissan370Z3.7LV6N/AOE Number : 16546JK20A
2012INFINITIEX353.5LV6N/AOE Number : 16546JK20A
2012INFINITIG252.5LV6N/AOE Number : 16546JK20A
2012INFINITIG373.7LV6N/AOE Number : 16546JK20A
2012Nissan370Z3.7LV6N/AOE Number : 16546JK20A
2011INFINITIEX353.5LV6N/AOE Number : 16546JK20A
2011INFINITIG252.5LV6N/AOE Number : 16546JK20A
2011INFINITIG373.7LV6N/AOE Number : 16546JK20A
2011Nissan370Z3.7LV6N/AOE Number : 16546JK20A
2010INFINITIEX353.5LV6N/AOE Number : 16546-JK20A
2010INFINITIG373.7LV6N/AOE Number : 16546-JK20A
2010Nissan370Z3.7LV6N/AOE Number : 16546-JK20A
2009INFINITIEX353.5LV6N/AOE Number : 16546-JK20A
2009INFINITIG373.7LV6N/AOE Number : 16546-JK20A
2009Nissan350Z3.5LV6N/AOE Number : 16546-JK20A
2009Nissan370Z3.7LV6N/AOE Number : 16546-JK20A
2008INFINITIEX353.5LV6N/AOE Number : 16546-JK20A
2008INFINITIG353.5LV6N/AOE Number : 16546-JK20A
2008INFINITIG373.7LV6N/AOE Number : 16546-JK20A
2008Nissan350Z3.5LV6N/AOE Number : 16546-JK20A
2007INFINITIG35Sedan3.5LV6N/AOE Number : 16546-JK20A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.