Four Seasons HVAC Heater Core P/N:90057
Four Seasons 86043 heater core tube for the 2001-2004 Nissan Frontier and other vehicles carries engine coolant through the heater circuit. Some catalogs list it as an HVAC heater core tube.
A coolant smell, fogged windows, a falling coolant level or weak cabin heat can mean a heater core tube is leaking. With the engine off and cool, look over the tube and its connections for wet spots or coolant residue before you replace it.
It is a direct-fit replacement for the 2001-2004 Nissan Frontier and the 2000-2004 Nissan Xterra, and it meets and/or exceeds OEM standard. Each of them takes one tube.
Fit and size
Build and materials
One heater core tube with a gasket or seal.
Interchange: 6053812 · 815863 · 902099 · CH4099 · W98573
This part cross-references / interchanges with the following part numbers:
Are these heater core tubes right for the 2000-2004 Nissan Xterra?
Yes. Four Seasons 86043 fits the 2000-2004 Nissan Xterra, and it also fits the 2001-2004 Nissan Frontier. Both take one tube.
Does the Four Seasons 86043 come with a gasket or seal?
Yes. The heater core tube comes with a gasket or seal, so the sealing piece is in the box with the tube.
What size is the inlet on this plastic heater core tube?
Four Seasons 86043 has a 0.625 in inlet diameter and is 5.996 in long. The discharge end measures 0.182 in, so you can compare these against your old tube.
Is this heater core tube leak tested?
Yes. Every tube is 100% leak tested, and the design is engineered and tested for years of trouble-free operation.
Does the Four Seasons 86043 replace part number 6053812?
Yes. 6053812 is an interchange number for this heater core tube, along with 815863, 902099, CH4099 and W98573.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.