Hyundai i20 Radiator Caps
Radiator Caps for the Hyundai i20 — new, used and aftermarket stock, quoted once we know which i20 you are running
What Are Hyundai i20 Radiator Caps?
The radiator cap is the pressurised seal on top of the expansion tank that holds coolant in the system and sets the boiling point. Caps are rated to a specific system pressure, and one that physically fits is not automatically the right rating — that is the thing to check when replacing one. We see caps lose their spring tension and cause overheating and weep.
Signs You Need New Radiator Caps
Before you order radiator caps for a i20
On the i20, PB, then GB, then the current BC3 are all in circulation locally, and they do not share one parts list.The PB and GB are different cars underneath despite the shared badge, so a part listed simply as "i20" is not automatically the right one — the generation code decides it.
Engine families fitted to the SA-market i20:
Air-conditioned and non-air-conditioned Hyundais take different radiators and fan assemblies, and the CRDi diesels add intercooler plumbing that the petrol cars simply do not have.
Send us petrol or diesel, and whether the car has air conditioning with your enquiry and we will confirm the correct radiator caps against your car before anything is dispatched.
In South Africa the i20 is mostly a high-mileage commuter hatch that spends its life in stop-start city traffic, which is why wear items move faster on an i20 than on almost anything else Hyundai sells here. That is the wear pattern we stock and source against.
Hyundai i20 Radiator Caps FAQs
Will radiator caps from another i20 fit mine?
Not automatically. The i20 sold in South Africa as PB, then GB, then the current BC3, and the PB and GB are different cars underneath despite the shared badge, so a part listed simply as "i20" is not automatically the right one — the generation code decides it. Send us the generation code off your VIN plate and we will confirm it either way before anything is dispatched.
What should I send you when asking about i20 radiator caps?
The VIN is the single most useful thing — a photo of the plate is fine. Failing that, the generation code and the engine code off the block. The i20 ran as PB, then GB, then the current BC3, so the generation is what narrows the search.
How much does a Hyundai radiator cap cost in South Africa?
A Hyundai-spec radiator cap runs around R149.99 through our supplier network, which also carries alternatives. Fitted is a two-minute job, so budget well under R250 all in.
What are the symptoms of a bad Hyundai radiator cap?
Rising temperature gauge, hissing from the coolant tank, steam from the bonnet and coolant drops with no visible hose leak are the usual signs. Always replace the cap before stripping hoses or the radiator itself.
Can a faulty radiator cap cause a Hyundai to overheat?
Yes. A cap that cannot hold full system pressure drops the coolant boiling point, so fluid steams away at the expansion tank in traffic. The needle climbs fast and the engine risks head-gasket damage within minutes.
How often should I replace my Hyundai radiator cap?
Fit a new cap with every major coolant change, or every four years. At around R150, it is cheap insurance against an overheating bill that can reach R30,000 on a Hyundai 1.6 CRDi or T-GDi engine with head damage.
Why is coolant leaking from my Hyundai radiator cap?
The rubber seal inside the cap has hardened and lost grip, or the spring has weakened. A cracked expansion tank neck does the same. Always replace the cap first, because it is the cheapest part to rule out.
Learn More About Hyundai i20 Radiator Caps
Get your i20 radiator caps matched properly
A part number from the old unit, or simply your VIN, is enough for us to identify the right radiator caps for your i20.