Parts for your 2002 Mitsubishi Pajero-Receiver driers

2002 Mitsubishi Pajero receiver-drier: what it does and when to replace it

For the 2002 Mitsubishi Pajero (NM/NP series), a receiver‑drier is absolutely used as part of the factory air‑conditioning system. Mitsubishi service literature for the NM/NP generation (Heating & Air Conditioning section) specifies a TXV (thermal expansion valve) layout that employs a high‑side receiver‑drier, and the Mitsubishi ASA electronic parts catalogue for 2000–2006 Pajero/Montero lists a receiver/drier assembly integrated with or mounted alongside the condenser. DENSO condenser catalogues for this model range also note a condenser that incorporates a replaceable desiccant/drier element. That means a receiver‑drier is relevant and fitted to this vehicle.

On a 2002 Pajero, the receiver‑drier’s job is threefold: filter debris, store a small buffer of liquid refrigerant, and remove moisture using a desiccant pack. Moisture in R134a systems is bad news—it forms acids and ice, corroding internals and starving the TXV—so the drier protects the compressor and helps keep vent temps nice and cold.

When should owners look at replacing it? Any time the A/C system is opened to atmosphere—after replacing a hose, condenser, compressor, or TXV—the receiver‑drier should be renewed. It’s also smart preventative maintenance on older Pajeros if the A/C performance is inconsistent or there’s evidence of contamination. Many workshops in Aus and NZ will recommend replacement every few years in harsh, humid climates, but the non‑negotiable trigger is an opened system or a compressor failure.

• Typical symptoms it’s due: slow cooldown, fluctuating pressures, TXV freeze‑up, metallic or gritty debris in the old drier, or a drier that’s physically corroded.
• Best practice: replace O‑rings, lightly oil new seals with the specified PAG oil, fit the new drier last to minimise air exposure, evacuate for at least 30 minutes, and recharge with the correct R134a mass.

Depending on variant, the Pajero’s receiver‑drier may be a bolt‑on canister near the condenser or a desiccant cartridge inside the condenser tank. Both styles are service items—just be sure to match the exact NM/NP setup. Using the correct oil type and quantity per the workshop manual is crucial, especially if a new compressor goes in. With a fresh drier and a proper vacuum and charge, the Pajero’s air‑con will stay crisp through Aussie summers and damp Kiwi winters alike.

Popular questions about 2002 Mitsubishi Pajero receiver-driers

How often should the receiver‑drier be changed on a 2002 Pajero?
Replace it any time the system is opened or after a compressor failure. In humid climates, many techs also suggest preventative replacement every few years, but the key trigger is exposure to air.

Is the receiver‑drier integrated with the condenser on this model?
Some NM/NP Pajeros use a drier canister attached near the condenser, while others have a desiccant cartridge inside the condenser tank. Check the vehicle’s build and parts catalogue to confirm before ordering.

What are the signs a Pajero receiver‑drier is failing?
Think sluggish cooling, pressure fluctuations, frost at the TXV, or contamination found during service. Corrosion on the drier body (for external types) is another clear prompt to replace.