Parts for your 2017 Subaru Forester-Receiver driers

2017 Subaru Forester receiver-drier: what’s fitted and how to look after it

On the 2017 Subaru Forester (SJ series), a receiver‑drier is used — it’s built into the A/C condenser as a replaceable desiccant bag rather than a separate canister. This layout is confirmed by Subaru’s service manual for the SJ Forester (HVAC section), Subaru’s parts catalogue for MY2017 showing a condenser with an internal desiccant/filter, and general A/C design guidance from DENSO and SAE which notes that TXV-based systems use a receiver‑drier downstream of the condenser.

In this Forester, the receiver‑drier’s job is threefold: it stores liquid refrigerant coming out of the condenser, dries the refrigerant by trapping moisture in the desiccant, and filters out fine debris before the expansion valve. Keeping moisture out is critical — water reacts with refrigerant and oil to form acids, which can corrode internals, stick the TXV, and shorten compressor life. Because Subaru integrates the drier into the condenser, servicing typically means replacing the desiccant bag via the service plug on the condenser tank or fitting a new condenser if the core is damaged.

Best practice on this model is to replace the receiver‑drier/desiccant whenever the A/C system has been opened to atmosphere (leak repair, hose change, condenser replacement, compressor job), after a compressor failure, or if the system’s been exposed to air for more than a short period. In Australia and New Zealand, most 2017 Foresters run R‑134a, always check the under‑bonnet label, and have the work done by a licensed A/C technician (ARCtick in AU or an appropriately certified tech in NZ).

During service, a tech will fit a new desiccant kit with fresh O‑rings, add the correct PAG oil quantity for parts replaced, evacuate the system long enough to boil off any residual moisture, pressure test with nitrogen, and recharge by weight to the Subaru spec. Day to day, there’s not much the driver needs to do — run the A/C regularly to circulate oil, keep the condenser fins clear of debris, and replace the cabin filter on schedule so airflow stays healthy.

• Tell‑tale signs the receiver‑drier may be saturated or the system is contaminated: weak cooling, TXV icing or hunting, compressor noise, or metallic/black debris in the old oil or orifices.
• If the condenser is corroded or bent, it’s often quicker and more reliable to replace the whole unit, which brings a fresh drier along for the ride.

Technical references consulted: Subaru Forester SJ Service Manual (HVAC/Air Conditioning), Subaru Genuine Parts Catalogue (MY2017 Forester condenser with internal desiccant), DENSO condenser/desiccant service guidance, and SAE A/C system design fundamentals for TXV systems.

Does a 2017 Subaru Forester have a receiver‑drier?
Yes — it’s integrated into the condenser as a desiccant/filter module rather than a separate canister. Subaru designed the SJ Forester’s TXV system to run a liquid line receiver‑drier downstream of the condenser to protect the expansion valve and compressor.

How often should the receiver‑drier be replaced on this model?
It isn’t a time‑based item. Replace it any time the A/C system is opened, after a compressor or condenser replacement, or if the system has been exposed to air or shows signs of contamination. That approach keeps moisture and debris out and helps the Forester’s A/C stay cold and reliable.

Can the drier be replaced separately, or is a new condenser required?
On many 2017 Foresters the desiccant bag can be serviced via a plug on the condenser tank using a genuine kit with new seals. If the condenser is damaged or corroded, it’s usually more sensible to replace the entire condenser assembly, which includes a fresh drier.