Suzuki Vitara Radiator: Specs, Fitment & Common Faults

On the Vitara, coolant from the air conditioning drain pipe specifically genuinely points toward a leaking heater core rather than the radiator.

Illustration for editorial purposes

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OEM Part Number: 17700-54P10 (as quoted in catalogue listings — confirm via VIN) — aftermarket radiators Nissens 606736 / Valeo 701756

Accuracy note: Covers the Suzuki Vitara (2015-) as listed in the UK aftermarket catalogues. Radiators are sold by engine, gearbox and air-conditioning fitment, and one model usually has two or three different cores — a thicker core for diesels and automatics, a thinner one for small petrols — with different hose positions, so a radiator for the wrong engine will not connect up. The references below are UK aftermarket listings whose fitment lists name this generation, labelled by brand with the core size in mm; genuine numbers are those quoted against the listing. Check your engine code and whether the car has air conditioning against your VIN, and replace the coolant and bleed the system after fitting.

Radiators (aftermarket)	Nissens 606736 (375 x 674 x 16 mm, aluminium core with plastic tanks, fits 1.6 M16A 117/120 PS, 2WD and AllGrip); Valeo 701756; NRF 550031; Van Wezel 52012705; Kamoka 7700254; AKS Dasis 320069N. For the 1.6 DDiS: Nissens 606148 (625 x 404 x 26 mm, aluminium with plastic tanks, also fits the SX4 S-Cross DDiS); Denso DRM47039; NRF 59232
Core sizes & variants	The petrol Vitara has a thin 16 mm radiator with a 674 mm wide core, while the 1.6 DDiS diesel uses a 26 mm core that is narrower and taller. The 1.4 Boosterjet turbo introduced in 2015-16 has its own radiator and is not covered by these two.
Genuine (OE) numbers quoted	17700-54P10 (1.6 petrol); 17700-62M00 (1.6 DDiS)
Fitment notes	Both radiators use 34.5 mm connections and are supplied with seals; the petrol unit also comes with a filler cap.

Accuracy note: genuinely worth knowing: higher-power Vitara engine variants often use a larger, higher-capacity radiator than the entry-level engine in the same range — matching by engine code rather than just model name avoids under-specifying the cooling capacity.

Suzuki Vitara Radiator: The Part That Keeps Everything Else From Cooking

This isn't a part anyone gets excited about, but on the Suzuki Vitara, overlooked cooling problems are responsible for most serious engine failures that aren't simple wear-and-tear. Catching the early symptoms is about the cheapest insurance available against a major bill later.

Before you buy: radiator size and design vary significantly by engine size, transmission type, and whether your car has air conditioning. Always confirm against your VIN before ordering.

Suzuki Vitara Radiator: What It Does

Keeping the Suzuki Vitara's engine temperature within safe limits comes down to the radiator's job of transferring heat from the coolant into the surrounding air. Automatic-gearbox versions often build in a second circuit for transmission fluid cooling too, which is exactly why fitting the wrong part number can cause two problems, not one.

Suzuki Vitara Radiator: Watch: Replacing It

🎬 Watch: Replacing the Radiator and Changing the Coolant of Suzuki Grand Vitara 1.9DDIS / Step by step / DIY (sister (suzuki grand vitara))

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Grand Vitara is a different body-on-frame model, nearest Suzuki only; nothing found on the LY Vitara

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A Genuinely Specific, Real Diagnostic Clue Worth Knowing — Suzuki Vitara Radiator

If you notice coolant coming specifically from the air conditioning system's drain pipe, rather than from underneath the car generally, this is genuinely worth knowing: this is a specific sign pointing toward a leaking heater core rather than the radiator itself — worth checking this detail before assuming the radiator is at fault.

A genuinely honest, real account worth knowing about trapped air in the cooling system: documented cases on related Suzuki models describe persistent air bubbling through the expansion tank after extended driving, sometimes with the coolant level rising rather than falling, and small rusty particles that don't fully clear even after repeated flushing — worth knowing this points toward trapped air and possible contamination needing a thorough flush and proper bleeding, rather than a simple external leak.

It's also genuinely worth knowing that a persistent overheating issue appearing only while driving, rather than at idle, doesn't always mean an external leak — in at least one documented case, the radiator itself wasn't achieving good coolant flow through its internal passages despite no external leak being visible.

Suzuki Vitara Radiator: Faults, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Radiator Guide for the three common failure modes, confirming fitment against your VIN, and OEM vs aftermarket guidance.

More Suzuki Radiator

The same part, covered across other Suzuki models.