Parts for your 2013 Toyota Camry-Radiator cap

2013 Toyota Camry radiator cap – what it does, why it matters, and how to look after it

Based on Toyota’s own technical references and common parts catalogues, a radiator cap is absolutely used on the 2013 Toyota Camry. The Toyota Owner’s Manual for this generation warns against removing the radiator cap when hot, confirming its presence, and the Toyota Repair Manual for 2012–2014 Camry models specifies a pressurised cooling system with a cap rated around 108 kPa (1.1 bar). Toyota’s Electronic Parts Catalogue also lists a “Cap Sub-Assembly, Radiator” for XV50 Camry variants, and aftermarket application guides from well-known suppliers match a 1.1 bar cap to this model.

On the 2013 Camry, the radiator cap isn’t just a lid. It’s a pressure regulator that lets the cooling system run at a higher pressure so coolant can handle more heat without boiling. Inside the cap is a spring-loaded valve that holds pressure to its set rating and a secondary vacuum valve that draws coolant back from the overflow bottle as the engine cools. That two-way action keeps the system topped up, stabilises temperatures, and helps protect the engine, heater core and hoses.

As part of regular servicing, the radiator cap deserves a quick once-over. It’s small, but a tired cap can cause some very real dramas:

• Unexplained coolant loss or frequent top-ups
• Overheating in traffic or after a hot soak
• Collapsed upper radiator hose after cool-down
• Perished rubber seal, rusty spring, or damaged seating face

Good practice on a 2013 Camry is to inspect the cap at each service, pressure-test it if there are any cooling concerns, and replace it preventively every 5–7 years or around 100,000–120,000 km, especially in hotter Aussie and Kiwi conditions. Always match the pressure rating shown on the original cap or the under‑bonnet label (typically 1.1 bar). Choosing a genuine Toyota cap or a reputable equivalent helps avoid sealing issues.

Safety first: never crack the cap when the engine’s hot. Let it cool fully, wrap a thick rag around the cap, and open it slowly to bleed off any residual pressure. When fitting the new cap, check the filler neck is clean and the overflow hose to the reservoir is clear. A fresh cap is a cheap bit of insurance to keep the Camry’s cooling system happy for the long haul.

Popular questions about 2013 Toyota Camry radiator caps

Where is the radiator cap on a 2013 Camry?
It’s typically on the top tank of the radiator, slightly offset to one side when looking into the engine bay. On some trims the plastic engine cover or shrouds may hide it a little, but it’s still directly on the radiator filler neck. Always check the cap label for the pressure rating before replacement.

What pressure rating should the cap be?
Most 2013 Camry variants (both 2.5‑litre and 3.5‑litre) use a cap rated around 108 kPa (1.1 bar). Confirm against the original cap, the under‑bonnet sticker, or a Toyota parts reference for your exact VIN to be certain.

Can a bad radiator cap cause overheating?
Yes. If the cap can’t hold pressure, coolant can boil sooner and push into the overflow bottle, leading to overheating and coolant loss. If the vacuum valve fails, the system may not draw coolant back as it cools, leaving air pockets that also drive temperature spikes.