Power Steering Pump with Pulley 21-5478 for Altima - Quiet, Direct Fit

In this review of the Power Steering Pump with Pulley 21-5478, the bottom line is simple: this is a direct-fit replacement for many Nissan Altima and X-Trail models that restores steering feel and reduces whining for drivers who need a reliable power assist pump. The reviewer found it most valuable for owners replacing a defective OE pump referenced by numbers like 49110-JA000 or 49110JA02B, since the unit is billed as compatible with 2007-2013 Altima 2.5L L4 and certain 3.5L V6 and 2005-2006 X-Trail models. Installation should be performed by a mechanic, and buyers are reminded to confirm the exact part number before ordering.

Key Features

• OE Reference Compatibility: Matches multiple OE reference part numbers so replacement is straightforward when the original part number is confirmed.
• Vehicle Fit: Designed to fit 2007-2013 Altima 2.5L L4 and compatible 3.5L V6 and X-Trail models, which simplifies sourcing a correct replacement for those years.
• Noise Reduction: Built to smooth operation and quiet whining, helping return a calmer steering feel compared with a failing pump.
• Steering Response: Restores normal steering assist so wheel movement and steering effort return to expected levels after replacement.
• Installation Guidance: Manufacturer recommends professional installation to avoid damage during setup and testing, protecting the pump and steering system.

Who It's For

This pump is best for owners of the specified Nissan Altima model years and the listed X-Trail years who have a failing power steering pump showing symptoms such as rough wheel movement, slow steering response, stiffness, or unusual noise. A buyer who can confirm their OE part number against the supplied references will find a straightforward replacement option.

It is less appropriate for owners of vehicles outside the listed model years or with different OE numbers; those shoppers should verify compatibility carefully or consult a professional mechanic rather than assuming fitment.

Pros & Cons

Pros

• Fits the advertised Altima and X-Trail model years when the OE reference matches, making replacement easy.
• Customers report good functionality and value for money compared with replacing other steering components.
• Helps eliminate steering whining and restores normal steering response in many cases.

Cons

• Noise level feedback is mixed; some users report it slightly noisier than OEM in a few cases.

Specifications

Product	Power Steering Pump with Pulley 21-5478
Compatible Models	2007-2013 Altima 2.5L L4; 2013 Altima 3.5L V6; 2005-2006 X-Trail 2.5L L4
OE Reference Numbers	49110-JA000, 49110JA02B, 49110-ZX01B, 49110CN00C, 21-5478
Brand	YOMALL
Primary Benefit	Restores power assist and reduces whining
Installation	Professional installation recommended

Our Verdict

The Power Steering Pump 21-5478 is a solid replacement option for owners of compatible Altima and X-Trail models who need to restore steering assist and reduce whining. It represents good value when the OE reference matches, but buyers should confirm fitment and consider professional installation to avoid installation issues. Overall, a practical and functional replacement for the specified applications.

Frequently Asked Questions

How do I confirm this pump fits my car?
Check your vehicle's original power steering pump part number and use the "confirmed fit" tool on the product page to verify compatibility before ordering.

Will this unit reduce steering noise?
The pump is designed to quiet whining and restore normal steering operation, though some customers report mixed noise levels compared with OEM.

Can I install this myself?
Professional installation is recommended to prevent damage during setup and to ensure proper testing and fluid handling.