Dorman 523-304 Suspension Knuckle Bushing - Rear Left Upper or Rear Right Upper

Name: Dorman 523-304 Suspension Knuckle Bushing - Rear Left Upper or Rear Right Upper
Brand: Dorman
SKU: BKKY-523-304
Price: 25.42 USD
Availability: InStock

Rear Left Upper

⚙️ 117 vehicles fit this part

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Select your vehicle to confirm fitment

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✅OE Direct Replacement — Bolt-on fit, no modifications needed

🚗Fitment: INFINITI and Nissan, Q60, 370Z, Q40, G37, G25, M35, M45, 350Z, G35, and Maxima

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Overview of Dorman Suspension Knuckle Bushing 523-304

The Dorman 523-304 suspension knuckle bushing is designed for select INFINITI and Nissan models, including the 350Z, 370Z, G25, G35, G37, M35, M45, Maxima, Q40, and Q60. Constructed from durable aluminum and rubber, this black bushing provides reliable support and vibration dampening for your vehicle's suspension system.

Material: Aluminum and rubber for strength and flexibility
Length: 50.25 mm for precise fitment
Inside Diameter: 12.25 mm to accommodate suspension components
Outside Diameter: 36.25 mm ensuring proper mounting
Grade Type: Regular for standard suspension applications
Package Contents: Includes 1 suspension knuckle bushing
Mounting Hardware: Not included

Detailed Product Description

The Dorman 523-304 suspension knuckle bushing is engineered to maintain suspension alignment and reduce noise and vibration in compatible INFINITI and Nissan vehicles. Its aluminum core provides structural integrity while the rubber exterior absorbs shocks and road irregularities. This combination helps preserve the handling characteristics of models such as the Nissan 350Z and INFINITI G37. The bushing’s dimensions—50.25 mm length, 12.25 mm inside diameter, and 36.25 mm outside diameter—ensure a precise fit within the suspension knuckle assembly, contributing to consistent performance and durability.

Common Applications and Problem Resolution

Reduces suspension noise and vibration in Nissan Maxima and Q60 models
Restores proper suspension alignment for INFINITI M35 and M45 vehicles
Addresses excessive play or looseness in suspension knuckle connections
Prevents premature wear of suspension components due to degraded bushings
Improves handling stability in Nissan 370Z and G25 models

Installation Notes and Tips

Ensure the suspension knuckle and surrounding components are clean before installation
Use appropriate tools to press the bushing into place without damaging the rubber or aluminum
Verify the inside and outside diameters match the vehicle’s specifications for a secure fit
Mounting hardware is not included; reuse existing hardware or source compatible fasteners
Consult vehicle service manual for torque specifications and installation procedures

Quality Assurance and Warranty

Dorman suspension components, including part number 523-304, are manufactured to meet or exceed OEM standards for fit, form, and function. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. This suspension knuckle bushing is designed to provide consistent performance and durability when installed according to manufacturer guidelines.

Brand	Dorman
Part Number	523-304
Color	Black
Grade Type	Regular
Inside Diameter	12.25
Length	50.25
Material	Aluminum and Rubber
Mounting Hardware Included	No
Outside Diameter	36.25
Package Contents	1 Bushing

This part fits 117 vehicles. Search below:

Year	Make	Model	Body Type	Position	Notes
2021	Nissan	370Z		Rear Right Upper	At Shock
2020	Nissan	370Z		Rear Right Upper	At Shock
2019	Nissan	370Z		Rear Left Upper	At Shock
2018	INFINITI	Q60		Rear Left Upper	At Shock
2018	INFINITI	Q60		Rear Right Upper	At Shock
2018	Nissan	370Z		Rear Left Upper	At Shock
2018	Nissan	370Z		Rear Right Upper	At Shock
2017	INFINITI	Q60		Rear Left Upper	At Shock
2017	INFINITI	Q60		Rear Right Upper	At Shock
2017	Nissan	370Z		Rear Left Upper	At Shock
2017	Nissan	370Z		Rear Right Upper	At Shock
2016	INFINITI	Q60	Coupe	Rear Left Upper	At Shock
2016	INFINITI	Q60	Coupe	Rear Right Upper	At Shock
2016	Nissan	370Z		Rear Left Upper	At Shock
2016	Nissan	370Z		Rear Right Upper	At Shock
2015	INFINITI	Q40		Rear Left Upper	At Shock
2015	INFINITI	Q40		Rear Right Upper	At Shock
2015	INFINITI	Q60	Coupe	Rear Left Upper	At Shock
2015	INFINITI	Q60	Coupe	Rear Right Upper	At Shock
2015	Nissan	370Z		Rear Left Upper	At Shock
2015	Nissan	370Z		Rear Right Upper	At Shock
2014	INFINITI	Q60	Coupe	Rear Left Upper	At Shock
2014	INFINITI	Q60	Coupe	Rear Right Upper	At Shock
2014	Nissan	370Z		Rear Left Upper	At Shock
2014	Nissan	370Z		Rear Right Upper	At Shock
2013	INFINITI	G37	Sedan	Rear Left Upper	At Shock
2013	INFINITI	G37	Coupe	Rear Left Upper	At Shock
2013	INFINITI	G37	Sedan	Rear Right Upper	At Shock
2013	INFINITI	G37	Coupe	Rear Right Upper	At Shock
2013	Nissan	370Z		Rear Left Upper	At Shock
2013	Nissan	370Z		Rear Right Upper	At Shock
2012	INFINITI	G25		Rear Left Upper	At Shock
2012	INFINITI	G25		Rear Right Upper	At Shock
2012	INFINITI	G37	Sedan	Rear Left Upper	At Shock
2012	INFINITI	G37	Coupe	Rear Left Upper	At Shock
2012	INFINITI	G37	Sedan	Rear Right Upper	At Shock
2012	INFINITI	G37	Coupe	Rear Right Upper	At Shock
2012	Nissan	370Z		Rear Left Upper	At Shock
2012	Nissan	370Z		Rear Right Upper	At Shock
2011	INFINITI	G25		Rear Left Upper	At Shock
2011	INFINITI	G25		Rear Right Upper	At Shock
2011	INFINITI	G37	Sedan	Rear Left Upper	At Shock
2011	INFINITI	G37	Coupe	Rear Left Upper	At Shock
2011	INFINITI	G37	Sedan	Rear Right Upper	At Shock
2011	INFINITI	G37	Coupe	Rear Right Upper	At Shock
2011	Nissan	370Z		Rear Left Upper	At Shock
2011	Nissan	370Z		Rear Right Upper	At Shock
2010	INFINITI	G37	Sedan	Rear Left Upper	At Shock
2010	INFINITI	G37	Coupe	Rear Left Upper	At Shock
2010	INFINITI	G37	Sedan	Rear Right Upper	At Shock
2010	INFINITI	G37	Coupe	Rear Right Upper	At Shock
2010	INFINITI	M35		Rear Left Upper	At Shock
2010	INFINITI	M35		Rear Right Upper	At Shock
2010	INFINITI	M45		Rear Left Upper	At Shock
2010	INFINITI	M45		Rear Right Upper	At Shock
2010	Nissan	370Z		Rear Left Upper	At Shock
2010	Nissan	370Z		Rear Right Upper	At Shock
2009	INFINITI	G37	Sedan	Rear Left Upper	At Shock
2009	INFINITI	G37	Coupe	Rear Left Upper	At Shock
2009	INFINITI	G37	Sedan	Rear Right Upper	At Shock
2009	INFINITI	G37	Coupe	Rear Right Upper	At Shock
2009	INFINITI	M35		Rear Left Upper	At Shock
2009	INFINITI	M35		Rear Right Upper	At Shock
2009	INFINITI	M45		Rear Left Upper	At Shock
2009	INFINITI	M45		Rear Right Upper	At Shock
2009	Nissan	350Z		Rear Left Upper	At Shock
2009	Nissan	350Z		Rear Right Upper	At Shock
2009	Nissan	370Z		Rear Left Upper	At Shock
2009	Nissan	370Z		Rear Right Upper	At Shock
2008	INFINITI	G35		Rear Left Upper	At Shock
2008	INFINITI	G35		Rear Right Upper	At Shock
2008	INFINITI	G37	Coupe	Rear Left Upper	At Shock
2008	INFINITI	G37	Coupe	Rear Right Upper	At Shock
2008	INFINITI	M35		Rear Left Upper	At Shock
2008	INFINITI	M35		Rear Right Upper	At Shock
2008	INFINITI	M45		Rear Left Upper	At Shock
2008	INFINITI	M45		Rear Right Upper	At Shock
2008	Nissan	350Z		Rear Left Upper	At Shock
2008	Nissan	350Z		Rear Right Upper	At Shock
2008	Nissan	Maxima		Rear Left Upper	At Shock
2008	Nissan	Maxima		Rear Right Upper	At Shock
2007	INFINITI	G35		Rear Left Upper	At Shock
2007	INFINITI	G35		Rear Right Upper	At Shock
2007	INFINITI	M35		Rear Left Upper	At Shock
2007	INFINITI	M35		Rear Right Upper	At Shock
2007	INFINITI	M45		Rear Left Upper	At Shock
2007	INFINITI	M45		Rear Right Upper	At Shock
2007	Nissan	350Z		Rear Left Upper	At Shock
2007	Nissan	350Z		Rear Right Upper	At Shock
2007	Nissan	Maxima		Rear Left Upper	At Shock
2007	Nissan	Maxima		Rear Right Upper	At Shock
2006	INFINITI	G35		Rear Left Upper	At Shock
2006	INFINITI	G35		Rear Right Upper	At Shock
2006	INFINITI	M35		Rear Left Upper	At Shock
2006	INFINITI	M35		Rear Right Upper	At Shock
2006	INFINITI	M45		Rear Left Upper	At Shock
2006	INFINITI	M45		Rear Right Upper	At Shock
2006	Nissan	350Z		Rear Left Upper	At Shock
2006	Nissan	350Z		Rear Right Upper	At Shock
2006	Nissan	Maxima		Rear Left Upper	At Shock
2006	Nissan	Maxima		Rear Right Upper	At Shock
2005	INFINITI	G35		Rear Left Upper	At Shock
2005	INFINITI	G35		Rear Right Upper	At Shock
2005	Nissan	350Z		Rear Left Upper	At Shock
2005	Nissan	350Z		Rear Right Upper	At Shock
2005	Nissan	Maxima		Rear Left Upper	At Shock
2005	Nissan	Maxima		Rear Right Upper	At Shock
2004	INFINITI	G35		Rear Left Upper	At Shock
2004	INFINITI	G35		Rear Right Upper	At Shock
2004	Nissan	350Z		Rear Left Upper	At Shock
2004	Nissan	350Z		Rear Right Upper	At Shock
2004	Nissan	Maxima		Rear Left Upper	At Shock
2004	Nissan	Maxima		Rear Right Upper	At Shock
2003	INFINITI	G35		Rear Left Upper	At Shock
2003	INFINITI	G35		Rear Right Upper	At Shock
2003	Nissan	350Z		Rear Left Upper	At Shock
2003	Nissan	350Z		Rear Right Upper	At Shock

* 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:

56219AL500NI

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