Radiator Coolant Reservoir Expansion Tank for 2013-2018 Nissan Altima

In this review of the Radiator Coolant Reservoir Expansion Tank compatible with 2013-2018 Nissan Altima, the bottom line is straightforward: this is a practical, direct replacement for owners who need a reliable coolant overflow bottle without fuss. The tester found it to be an accurate fit for the listed Altima models and appreciated that the unit includes the cap and is preassembled to save installation time. For routine repairs where OEM fit and straightforward installation matter most, this part delivers the core functionality most drivers need.

Key Features

• Direct replacement fit: Designed to match the original mounting points and shape so no modifications are required for compatible Altima models.
• Cap included: Ships with a matching cap so the reservoir is ready to install and seal the system immediately.
• Preassembled convenience: Comes ready to install which reduces labor time and simplifies the DIY replacement process.
• Durable construction: Molded plastic material provides corrosion resistance and long term durability under normal engine bay conditions.
• Reference compatibility: Listed with multiple reference numbers to help confirm correct fitment for specific vehicle variants.
• Non-pressurized design: Matches the original non-pressurized overflow system used on the listed Altima models for correct operation.

Who It's For

This part is best for Nissan Altima owners from 2013 through 2018 who need a like-for-like replacement for a cracked, leaking, or discolored coolant reservoir. It will suit independent mechanics and home DIYers who prefer a preassembled component that restores coolant containment without extra fabrication or contrivance.

It is not aimed at vehicles outside the listed Altima fitment or at someone seeking aftermarket upgrades such as reinforced metal reservoirs or pressurized tanks; those users should look for performance or custom cooling solutions tailored to their build.

Pros & Cons

Pros

• Good fit and compatibility with the listed 2013-2018 Altima models, reducing installation guesswork.
• Includes cap and arrives preassembled, saving time on installation.
• Customers report solid build quality and durability comparable to original equipment.
• Clear value for money versus buying a dealer part with similar fitment.

Cons

• Screw hole alignment has mixed feedback from some users, so careful test fit is advised before final mounting.
• Level sensor is not included, so buyers who need that feature must transfer the original sensor if applicable.

Specifications

Compatible Models	2013-2018 Nissan Altima (listed variants)
Material	Plastic
Cap Included	Yes
Level Sensor Included	No
Pressurized	No
Mounting Hardware Included	No
Reference Numbers	NI3014123; 21710-3TA0A; 21710-3TA1A; 21710-9DJ0A etc.

Our Verdict

For most Altima owners needing a straightforward replacement, this expansion tank is a sensible, cost effective choice that restores proper coolant overflow function without modification. It offers good build quality, ease of installation, and useful fitment references, making it a practical alternative to dealer parts for routine repairs.

Frequently Asked Questions

Will this fit a 2013 Altima sedan?
Yes, it is listed as compatible with 2013 Altima sedan variants including SV and SL when matched to the reference numbers.

Does the unit include the coolant level sensor?
No, the level sensor is not included, so the original sensor should be transferred if required.

Is mounting hardware supplied?
No, mounting hardware is not included, but the tank is preassembled to align with the original mounting points.