Cheap Alfa Romeo 159 Exhaust Manifold

The Alfa Romeo 159 was produced from 2005 to 2011 with no significant mid-life generation split, so the key fitment question is whether the engine codes match rather than the model year alone. The 159 was offered with a range of petrol and diesel engines — including the 1.9 JTDm, 2.4 JTDm, 1.8 petrol, 2.2 petrol and 3.2 V6 — and each has its own manifold design, so you must match on engine code first. Year alone is not a reliable guide; confirm the engine code from your V5C or registration plate with the breaker before agreeing a sale.

Yes, it matters enormously — a diesel manifold and a petrol manifold are completely different components and will not interchange. On the 159, diesel variants such as the 1.9 JTDm and 2.4 JTDm run turbocharged engines where the manifold also feeds the turbocharger, so the geometry and flange pattern differ significantly from the naturally aspirated petrol units like the 2.2. Always confirm fuel type and the full engine code with the breaker to avoid an expensive mistake.

No, trim level does not affect exhaust manifold fitment on the Alfa Romeo 159 — the Lusso, Ti, and other trim designations relate to interior and equipment differences rather than the engine or exhaust system. What matters is the engine code, which can be the same across multiple trim levels. Focus on matching engine code and fuel type with the breaker, and ignore trim badges when searching.

No, the 1.9 JTDm and 2.4 JTDm are different engines with different exhaust manifold designs, flange patterns and turbo connections, so these will not interchange even though both are diesel units wearing the JTDm name. Always confirm the exact engine code — for example 939A2 for the 1.9 JTDm — with your breaker against your registration to ensure you're getting the correctly matched manifold. Never assume that shared nomenclature means shared parts.

The exhaust manifold itself is unlikely to cause an MOT failure directly, but it sits at the heart of the emissions system and a manifold from a mismatched engine or one that creates exhaust leaks can affect how the catalyst and any downstream components perform. On later diesel 159s the DPF is part of the wider exhaust system, and fitting a manifold from a different engine variant could affect how gases flow through it — confirm with the breaker that the manifold matches your exact engine code and emissions specification against your registration. We'd also strongly recommend confirming any catalytic converter or DPF interaction specifics directly with the breaker, as those interchange details are complex and outside what we can advise on.

All Alfa Romeo 159 variants have an exhaust manifold — it is a fundamental part of any internal combustion engine, directing exhaust gases from the cylinder head towards the rest of the exhaust system. On the turbocharged diesel variants such as the 1.9 JTDm and 2.4 JTDm the manifold also connects to the turbocharger, making it a more complex component than on the naturally aspirated petrol engines. So yes, you are looking for a real part that exists across the entire 159 range, but you must match it to your specific engine code.