Dorman OE Solutions Engine Coolant Reservoir for 1996-2000 Infiniti QX4 and 1996-1999 Nissan Pathfinder 603-607

Non-pressurized engine coolant reservoir for 1996-2000 Infiniti QX4 and 1996-1999 Nissan Pathfinder used to replace cracked or leaking factory overflow tanks.

Built to meet the manufacturer's design intent for reliable service, this unit is constructed from quality materials engineered to withstand underhood heat and engine vibration while matching the original part's fit and function.

Key Features

• Direct replacement for original equipment coolant reservoir
• Constructed from durable materials resistant to heat and vibration
• Non-pressurized design matches OEM specifications
• Engineered to restore proper coolant system capacity
• Validated through testing for long-term reliability

Benefits

• Prevents coolant loss caused by cracked or damaged tanks
• Restores proper coolant expansion and contraction cycles
• Eliminates guesswork with a direct-fit installation
• Reduces risk of repeat repairs with robust construction
• Helps maintain optimal engine operating temperature
• Backed by over 100 years of automotive aftermarket experience

Application

Ideal for owners of Infiniti QX4 and Nissan Pathfinder models needing a trustworthy fix for a broken, leaking, or discolored coolant overflow bottle without paying dealer prices.

Fitment Notes

• Fits 1996-2000 Infiniti QX4
• Fits 1996-1999 Nissan Pathfinder
• Replaces Nissan part numbers 217100W000, 2171250M00, 2171250M01, 217100W001, and 21712F4100

Why Choose Dorman - OE Solutions?

• Dorman parts are engineered as direct-fit replacements designed to match OE form, fit, and function for smoother installation.
• Built with quality materials and validated through testing to stand up to daily driving demands.
• Offers a smart way to restore your vehicle with confidence thanks to a strong focus on fit and durability.

What's in the Box

• 1 Engine Coolant Reservoir

Item Dimensions

• Length: 15.0 inches
• Width: 8.3 inches
• Height: 9.1 inches
• Weight: 2.1 lbs