BMW 3 Series Exhaust Manifold Replacement Parts

The E90 saloon and E92 coupe share the same engine families across the E90-generation (2005–2013, facelift 2008), so fitment is driven by engine code rather than body style — an N46, N52, or N47 manifold from an E90 should correspond directly to the same unit on an E92 with the same engine code. Always cross-reference the exact engine code (found on your V5C or stamped on the block) with the breaker before buying, as subtle casting differences can exist within the same engine family. Never assume body style alone confirms compatibility.

The F30 3 Series ran from 2012 to 2019, with a facelift in 2015, but the manifold is determined by the engine code rather than the facelift date — if the engine code is unchanged across the facelift (as it typically is for units like the B47 diesel or B48 petrol), the manifold should be the same part. However, the 2015 facelift period also coincided with the shift from Euro 5 to Euro 6 emissions standards, and engines were updated accordingly, so a pre-facelift Euro 5 engine and a post-facelift Euro 6 engine of nominally the same displacement may use different manifold castings. Confirm the engine code and emissions standard with the breaker against your registration before purchasing.

Trim level makes no difference to exhaust manifold fitment on the BMW 3 Series — whether your 318d is an SE, Sport, M Sport, or Luxury, the manifold is determined entirely by the engine code (in this case the N47 on pre-2015 cars or B47 on later ones) and the emissions era. You may find that donor cars from different trims come with slightly different surrounding heat shielding, but the manifold itself will be the same unit if the engine codes match. Always verify the engine code with the breaker regardless of trim.

No — the E46 (1998–2006) and E90 (2005–2013) generations used entirely different diesel engine families; the E46 320d used the M47 engine while the E90 320d moved to the N47, and these engines have different manifold designs and mounting configurations that are not interchangeable. Generation boundaries here are a genuine hard fitment break, not just a caution. Source a manifold that matches your specific engine code from a breaker who can confirm it against your registration.

Yes, absolutely — petrol and diesel exhaust manifolds are completely different parts with different port layouts, bolt patterns, and thermal characteristics, and they will not interchange. On the 3 Series, petrol engines such as the N52 or B48 and diesel engines such as the N47 or B47 each have manifolds designed specifically for that engine family. Always tell the breaker both your fuel type and your engine code to ensure the correct part is supplied.

On F30-generation cars (2012–2019) the 320i uses the B48 engine in a lower state of tune, while the 328i (sold in certain markets including early UK examples) also used a version of the N20 or later B48 family — the manifold may or may not be shared depending on the exact engine variant and year, and fitting a manifold from a different power output variant carries risk if there are any casting differences. Engine codes are the only reliable guide here, so provide both your registration and the donor car's engine code to the breaker and ask them to confirm the part numbers correspond before you commit to a purchase.