UIU Replacement Radiator — F25 X3 / F26 X4

by UIU

F25 F26

$72.99

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Key Features

Direct OEM fitment for F25 X3 (2011–2017) and F26 X4 (2015–2018) manual transmission models
Aluminum core with TIG-welded PA66 GF30 glass-reinforced plastic inlet/outlet tanks
Core dimensions: 23-5/8" height × 15-1/4" width × 1-5/16" thickness; 1-1/2" inlet and outlet
Factory leak-tested before shipping to ensure a seal-tight, ready-to-install unit
Protective coating applied to aluminum core to resist corrosion and extend service life
Two-year unlimited-mileage warranty backed by UIU for long-term peace of mind

Product Details

Brand: UIU
Part #: UIURadiator13370
Category: Radiators
ASIN: B0F4813R2Z

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UIU Replacement Radiator — F25 X3 / F26 X4 — Overview

When your F25 X3 or F26 X4 starts running hotter than it should, a compromised radiator is often the culprit — and the UIU replacement radiator is engineered to restore factory-level cooling performance without the dealer markup. Designed as a direct OEM replacement, it fits both the 2.0L four-cylinder and 3.0L six-cylinder variants across the full F25 X3 production run (2011–2017) and the F26 X4 (2015–2018), exclusively for manual transmission-equipped vehicles. Reference numbers 17117632080, 17117823568, and 17118623350 confirm cross-compatibility with your existing mounting points and hose connections.

UIU built this radiator around an aluminum core bonded to PA66 GF30 glass-fiber-reinforced plastic tanks — the same material specification used in many OEM applications — with TIG-welded joints throughout for a structurally sound, vibration-resistant assembly. A protective coating on the aluminum core guards against the oxidation and road-salt corrosion that quietly degrade cheaper units over time. Core dimensions measure 23-5/8" tall by 15-1/4" wide by 1-5/16" thick, with matched 1-1/2" inlet and outlet diameters that connect directly to your factory upper and lower hoses.

Every unit leaves the factory after passing a dedicated leak test, so you're not gambling on a dry-fit that fails six months down the road. It's worth noting this radiator does not include an integrated transmission oil cooler or engine oil cooler, so verify your existing setup before ordering. Installation follows the same procedure as removing and replacing the OEM unit — no drilling, no adapter fittings, no modifications required.

UIU covers this radiator with a two-year unlimited-mileage guarantee, a meaningful commitment that puts it well ahead of many budget alternatives in this segment. For X3 and X4 owners looking for a properly specified, long-lasting cooling solution at a fraction of dealer cost, this is a straightforward, well-engineered choice.