Subaru Crosstrek Radiator: Specs, Fitment & Common Faults

A genuinely useful piece of context worth knowing about Subaru's head gasket history: older EJ25-engined models had a well-documented issue with an extended warranty, plus a useful diagnostic technique for catching a leak a standard test might miss.

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OEM Part Number: 45119GA010 (as quoted in catalogue listings — confirm via VIN) — aftermarket radiators Nissens 67723 / Valeo 701204

Accuracy note: Covers the Subaru Crosstrek (XV 2012-2017) 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 67723 (340 x 683 x 16 mm, aluminium soldered core with plastic tanks, 39.5 mm inlet and outlet; fits the XV 1.6i AWD 114 PS and 2.0i AWD 150 PS, and the GP Impreza, Forester SH and Legacy IV); Denso DRM36007; NRF 59116; Valeo 701204; Van Wezel 51002065; Mahle CR 1573 000S; Ridex 470R0591
Core sizes & variants	The XV uses a single 340 x 683 x 16 mm radiator for both the 1.6 and 2.0 petrol engines. The sister part Nissens 67741 (340 x 688 x 16 mm, 40 mm pipes) adds a built-in oil cooler for the Lineartronic CVT and is listed for the GP Impreza, so an automatic XV may carry that version instead.
Genuine (OE) numbers quoted	X4511AG011; 45119GA010; 45111AG010; 45111AG011; 45119SC010; 45119FG050; 45119AG010
Fitment notes	Check whether the old radiator has transmission oil-cooler pipes in the side tank before ordering

Accuracy note: genuinely worth knowing: radiator core size and construction can differ between petrol and diesel Crosstrek engines, and again between manual and automatic gearboxes where the automatic needs an integrated oil cooler circuit — confirm your exact engine code and transmission before ordering.

Subaru Crosstrek Radiator: The Part That Keeps Everything Else From Cooking

This isn't a part anyone gets excited about, but on the Subaru Crosstrek, 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.

Subaru Crosstrek Radiator: What It Does

Keeping the Subaru Crosstrek'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.

Subaru Crosstrek Radiator: Watch: Replacing It

🎬 Watch: How to Replace Radiator 2013-2015 Subaru XV Crosstrek

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Subaru Crosstrek Radiator reference plate

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A Genuinely Useful Piece of Context Worth Knowing About Subaru's Head Gasket History — Subaru Crosstrek Radiator

If you're comparing against an older, EJ25-engined Subaru such as an older Forester or Outback, this is genuinely worth knowing: this older engine family has a well-documented history of head gasket seepage, with Subaru extending the warranty specifically covering this known issue on certain production dates, and documented cases seeing the gasket replaced completely free of charge. This doesn't directly affect this specific model, but is worth knowing as context on Subaru's broader engine history.

Worth knowing generally about diagnosing a suspected head gasket leak: a standard hydrocarbon or block test can sometimes give a false negative even when a genuine leak is present — using a no-spill coolant funnel fitted to the radiator cap opening while revving the engine and watching for bubbles has been documented catching leaks that a standard test missed.

It's also worth knowing that the complete absence of visible exhaust smoke or a coolant smell doesn't reliably rule out a head gasket leak on Subaru engines generally, since seepage can occur gradually without those more obvious symptoms being present.

Subaru Crosstrek 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 Subaru Radiator

The same part, covered across other Subaru models.