Parts for your 2013 Honda Cr-v-Thermostat housing

2013 Honda CR‑V Thermostat Housing: What it does and how to look after it

Technical sources including the official Honda CR‑V (2012–2014) Service Manual (Cooling System section) and Honda’s OEM parts catalogue identify a thermostat and water outlet/thermostat housing assembly for the 2013 CR‑V 2.4‑litre K‑series engine. That confirms the vehicle is fitted with a thermostat housing and it is a serviceable component.

On the 2013 Honda CR‑V, the thermostat housing is the enclosure that holds the thermostat and directs coolant flow between the engine and radiator. It helps the engine warm up quickly, then maintains a steady operating temperature by routing coolant as needed. The housing also provides sealed connections for hoses and, on many K‑series layouts, integrates bypass passages and sensor ports. Because it’s typically an aluminium casting sealed with a rubber O‑ring, proper sealing and correct bolt torque are critical to prevent leaks.

As part of regular servicing, the housing area should be visually checked for dried coolant residue, staining, or dampness around the gasket/O‑ring and hose junctions. While the housing itself isn’t a scheduled replacement item, the thermostat and O‑ring are common service parts. Many techs will renew the thermostat proactively around high kilometre marks or whenever cooling system work is being done, especially if there are symptoms.

• Common signs of trouble: slow warm‑up or running too cool, overheating, temperature gauge wavering, heater performance dropping, sweet coolant smell, or white/pink crust near the housing.
• Smart service tips: use Honda Type 2 (blue) long‑life coolant mixed with demineralised water if not pre‑mixed, replace the O‑ring every time the housing is opened, avoid sealant unless the service manual specifies it, and tighten housing bolts evenly to the published torque to protect the aluminium threads.

Replacement is straightforward for a competent DIYer: work on a cold engine, drain the coolant, remove the intake ducting as needed, clamp and remove hoses, unbolt the housing, swap in a new thermostat and O‑ring, clean mating faces, then refit and torque to spec. Refill and bleed the system with the heater set to hot, allowing the radiator fans to cycle to purge air. Top up the reservoir to the MAX line and recheck the level after a day’s driving.

In Australian and New Zealand conditions—stop‑start traffic, hot summers, and towing—the thermostat works hard. Keeping fresh coolant in the system (per Honda’s interval) and inspecting the housing at each service helps the CR‑V stay cool and reliable.

FAQs

Where is the thermostat housing on a 2013 Honda CR‑V?
It’s mounted low on the engine near the lower radiator hose connection, on the gearbox side of the bay. Look for the alloy outlet where the larger radiator hose attaches to the engine block.

Do you replace the whole housing or just the thermostat?
Usually just the thermostat and its O‑ring. The housing is reused unless it’s cracked, corroded, warped, or leaking from a sensor port or hose seat. If there’s pitting on the sealing surface, a new housing is the tidy fix.

What coolant should be used, and how much?
Use Honda Type 2 (blue) long‑life coolant. Many suppliers offer it premixed, if concentrated, mix 50/50 with demineralised water. System capacity is roughly five to six litres depending on configuration, always fill, bleed properly, then top up to the MAX mark.