Ford Transit Oil Cooler - Engine Oil Cooler

The Ford Transit oil cooler is a critical component of the lubrication system, responsible for maintaining the correct temperature of the engine oil, which directly affects the engine’s durability. In commercial vehicles such as the Ford Transit (MK5–MK9), various types of oil coolers have been used depending on the engine version, production year and the design of the oil filter housing.

Types of Ford Transit Oil Coolers

In older Transit models equipped with TDDI and TDCI engines (MK6, MK7 – years 2000–2013), the oil cooler is most commonly integrated with the oil filter housing. These oil coolers are mounted directly onto the engine block and use coolant flowing through internal heat exchanger channels. In newer generations, MK8 and MK9 (2014–present), the Ford Transit oil cooler is available in different versions: standard and reinforced variants designed for larger EcoBlue engines. In the Ford Transit Custom and Transit Connect models, dedicated oil coolers are also used, differing in size and the way coolant hoses are connected.

Most Common Oil Cooler Failures in the Ford Transit

A faulty oil cooler can lead to serious engine problems. The most common issue is a heat exchanger leak, which can cause coolant to mix with engine oil or vice versa. Symptoms include a rising oil level, the presence of a milky emulsion (“mayonnaise”) under the oil filler cap and reduced cooling efficiency. In MK6 and MK7 Transit models with TDDI/TDCI engines, internal channel corrosion of the oil cooler is a typical fault, while in newer EcoBlue engines (MK8, MK9), seal failures within the oil filter module are more common.

When Should the Oil Cooler in a Ford Transit Be Replaced?

If contaminants, unusual deposits or rapid oil overheating are observed in the cooling or lubrication system, the condition of the oil cooler should be checked immediately. Ignoring these symptoms may result in engine seizure. The Ford Transit oil cooler should also be replaced during major engine repairs or whenever leaks are detected around the oil filter housing. In our online shop, you will find Ford Transit oil coolers for all generations – from MK6 to the latest MK9 – as well as for the Transit Custom and Transit Connect models. We offer oil coolers dedicated to TDDI and TDCI engines as well as modern EcoBlue units, available in both genuine OEM versions and high-quality aftermarket replacements that guarantee reliable performance in all conditions.