Parts for your 2013 Honda Stream-Tx valve

2013 Honda Stream TX Valve: purpose, fitment and servicing tips

Technical references confirm the 2013 Honda Stream (RN6–RN9) is fitted with a thermal expansion valve (TX valve/TXV). The Honda Stream RN6–RN9 Service Manual (HVAC section: A/C System — Expansion Valve Removal/Installation) details the valve at the evaporator inlet, and the Honda Electronic Parts Catalogue for the 2013 Stream lists a “Valve Assy., Expansion” for these models. So, a TX valve is absolutely relevant to this vehicle.

The TX valve’s job is to meter refrigerant into the evaporator based on temperature and pressure, keeping the cabin cool without freezing the core. By controlling superheat, it helps the Stream’s A/C hold steady vent temps at idle and on the open road, and keeps compressor load reasonable to save a bit of fuel.

It’s not a routine replacement item, but it does deserve attention during A/C service. Typical signs of a crook TX valve include weak cooling at idle, the system cycling oddly, frost or sweating on one pipe and not the other at the firewall, a loud hiss, or pressure readings that show a starved or flooded evaporator. Because these symptoms can overlap with low gas, a blocked condenser, or a failing compressor control valve, proper diagnosis with gauges and temperature checks is key.

• If the valve needs replacing, have the refrigerant recovered professionally — venting is illegal and unsafe.
• The valve is mounted at the evaporator, access usually involves glovebox/trim removal. Replace all O-rings with the correct HNBR seals and lightly oil them.
• On systems this age, it’s smart to replace the condenser desiccant bag (receiver/drier element) to protect the new parts from moisture.
• Use the specified refrigerant (R134a for factory-stream cars of this era) and the correct PAG oil type/quantity (Honda ND-Oil 8 equivalent). Evacuate the system under vacuum before re-gassing.
• Tighten fasteners to the service manual spec to avoid leaks or a cracked block, and keep everything scrupulously clean — even a speck of grit can stick the valve.

As part of regular servicing, check for oily residue at A/C joints, listen for unusual hissing, make sure the cabin filter’s clean (a blocked filter can mimic poor cooling), and run the A/C year-round to keep seals lubricated. If cooling performance has dropped off or the system’s been open to air, a proper A/C service and TX valve inspection will keep the Stream comfy through Aussie summers and Kiwi nor’westers.

• Does the 2013 Honda Stream use R134a or R1234yf? The factory spec for this model range is R134a in most markets. Always verify on the under-bonnet A/C label.

Popular questions about the 2013 Honda Stream TX valve

Does the 2013 Honda Stream use a TX valve or an orifice tube?
The 2013 Stream uses a thermal expansion valve at the evaporator, not an orifice tube. This is documented in Honda’s RN6–RN9 service literature and parts listings for the “Valve Assy., Expansion.”

When should the TX valve be replaced?
There’s no time-based interval. Replace it if diagnosis points to a sticking or blocked valve (poor cooling, uneven frost, abnormal pressures), or after major contamination events (compressor failure, moisture ingress). It’s often paired with a desiccant bag replacement during A/C repairs.

Can a DIYer replace the TX valve at home?
Accessing the valve is straightforward for an experienced tech, but refrigerant recovery, evacuation and accurate recharging require A/C equipment and certification. For safety, legality and performance, most owners are better off having an A/C specialist handle the job.