For the BMW 340i GT (F34) in 340i 326 hp (240 kW petrol), the autoKUR catalogue holds 1 exchange-standard reference(s). At equal displacement, two outputs do not call for the same part.
Engine specification: 2998 cm³, petrol, built since 06/2016. Matching part number: 11658637041 (MAHLE). Compare with the code stamped on your part.
This is the only listed engine of the BMW 340i GT (F34). The code stamped on your part confirms the match: search by reference. 24-month warranty.
Frequently asked questions
A remanufactured turbocharger for the BMW Série 3 340i 326 CV starts at €1003.00. This engine takes a single reference, 11658637041: the price shown is the one part that fits your vehicle, with no variant to compare.
The reference is 11658637041. It is what settles the match on a BMW 340i GT (F34) with the 340i 326 CV engine — not the vehicle's trade name, nor its year.
Because this engine was built with a single turbocharger. Other Série 3 engines carry several references depending on the production period; here the choice is unique, which rules out any risk of error.
It is on the riveted plate of the centre housing, on the compressor side. The plate holds the marking even on a part coated with oil and soot. It is the only reading that confirms the match with 11658637041.
Part 11658637041 is sold as an exchange unit: it has already been remanufactured and balanced, and the turbocharger you remove goes back into the reconditioning circuit. Return terms are stated at checkout.
An exchange turbocharger is an original part restored to working order: wear parts are replaced and the rotating assembly is rebalanced. It carries the same reference, 11658637041, and fits in place of the part removed.
No: it matches 340i GT (F34) models fitted with the 340i 326 CV engine. A 340i GT (F34) running on diesel, or at a different petrol power output, takes another reference.
No. Two Série 3 of the same year can take different turbochargers depending on their engine. It is the engine-and-power pairing — here 340i 326 CV — that determines the reference, and the code on the removed part that confirms it.
On this petrol engine, a turbocharger nearing the end of its life shows up as a loss of power under acceleration, smoke at the exhaust, a whistle rising with engine speed and a drop into limp mode. These signs overlap with other intake faults: diagnosis is a job for a qualified technician.
On this 340i 326 CV, the ECU limits the engine when it no longer finds the boost pressure expected for the 326 CV rated output. A turbocharger that no longer regulates pressure correctly is one possible cause, alongside an air leak or a faulty pressure sensor.
On this 340i 326 CV petrol engine, blue smoke means oil is passing, as on a diesel — turbocharger sealing is one candidate among other parts; white smoke points instead to an ignition fault, specific to petrol engines. Colour guides the diagnosis, it does not replace it.
No. The whistle can come from the turbocharger itself, but equally from a leak on an intake hose, the intercooler or the wastegate. Noise alone is not enough to condemn the part.
That depends on the reference fitted from the factory: a twin-scroll turbocharger separates the exhaust flows to limit interference between cylinders, an architecture more common on sporting petrol engines. The listing for reference 11658637041 states the architecture used on this 340i 326 CV.
By a fault code read and a boost pressure check, carried out by a qualified technician, before any order of reference 11658637041. That check separates a failed turbocharger from an air leak or a faulty sensor — three faults with similar symptoms but different remedies.
Yes: reference 11658637041 is the original fitment for a BMW 340i GT (F34) with the 340i 326 CV engine. It keeps the dimensions, the mounting and the connections of the part removed. Fitting is a job for a qualified automotive technician.
