Keep coolant moving to your heater core and warm air reaching the cabin with the Dorman - OE Solutions HVAC Heater Hose Assembly 626-598. It drops in as a direct-fit replacement for the 2005-2020 Nissan Frontier (V6-4.0L), 2005-2012 Nissan Pathfinder (V6-4.0L), 2012 Nissan Pathfinder (V8-5.6L), and 2005-2015 Nissan Xterra (V6-4.0L), carrying engine coolant in the outlet position.
This is a Dorman OE FIX part: the original assembly's plastic T-connector is prone to cracking, so this replacement uses an aluminum T-connector designed for added durability. If a cracked plastic T-connector is behind your coolant leak, this molded rubber assembly replaces it.
- Upgraded aluminum T-connector: engineered to resist the cracking common to the original plastic connector.
- Molded rubber, branched build: a pre-formed assembly with two branches and a rated maximum working pressure of 100 PSI.
- Application-specific design: made to follow the original heater hose fit, function, and routing on the listed Nissan applications.
- Overall length approximately 29.67 in.
Clamps are not included with this assembly—consult the vehicle service information for the correct clamps. Designed in the United States. Country of origin: Thailand.
Interchange: 92410EA200 · SK121393. Manufacturer part number 626-598 (also 626598).
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
Which vehicles does the Dorman 626-598 fit?
It's a direct-fit replacement for the 2005-2020 Nissan Frontier (V6-4.0L), 2005-2012 Nissan Pathfinder (V6-4.0L), 2012 Nissan Pathfinder (V8-5.6L), and 2005-2015 Nissan Xterra (V6-4.0L).
What makes this an upgrade over the original?
Original plastic T-connectors often crack. This Dorman OE FIX assembly uses an aluminum T-connector designed for added durability against that specific failure.
Are hose clamps included?
No—the Clamps Included flag is No for this assembly. Consult your vehicle service information for the correct clamps needed to complete the installation.
What does this heater hose assembly do?
It routes engine coolant in the outlet position to and from the heater core, supplying the heat used for cabin warmth and defrosting.
How do I know if my heater hoses need replacing?
Signs that may point to worn heater hoses include coolant leaks or seepage, a cracked plastic T-connector, low coolant, or weak cabin heat. Diagnose the cause before replacing.
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