New BMW M5 Turbo – Ref. 800075-5012S

Diagnosing a failing turbo on a BMW M5 before any replacement

Before ordering a new turbo for your BMW M5, it is essential to confirm that the turbo is actually the cause of the problem. On this high-performance saloon fitted with the V8 bi-turbo engine, tell-tale signs include a loss of power at high revs, blue or black exhaust smoke, an unusual whistling noise on the intake side, or an engine warning light accompanied by a fault code related to boost pressure. Checking the oil pressure, visually inspecting the axial play of the turbo shaft, and verifying that there is no abnormal radial play will help rule out other causes — such as split hoses, a faulty sensor, or an intake leak — before confirming that the turbocharger needs replacing.

Overview of the new turbo for the BMW M5

This turbo fits the S63 TU Left engine, which has a capacity of 4.4 litres. It is a new turbo, compatible with reference 800075-5012S, designed to restore the original performance expected from this V8 petrol bi-turbo engine. This BMW model, renowned for its sporting character, places considerable demands on both turbochargers, making the quality of the replacement part critical to engine reliability.

Engine compatibility and reference verification

This new turbo is compatible with the M5 4.4 V8 Bi-Turbo engine code S63, petrol-fed, with an engine capacity of 4395 cm³. Before placing an order, it is strongly recommended that you verify the reference number stamped on the old turbo or on the vehicle's identification plate, as technical revisions may differentiate several turbo variants depending on the side (left or right) and the version of the S63 engine.

Exchange basis and warranty for this turbo

This new turbo is sold on an exchange basis: return of the old turbo is required, in accordance with our Terms and Conditions, and is only requested after delivery and fitting of the new part, so your BMW M5 is not left off the road. This turbo comes with a 12-month parts warranty, subject to fitting being carried out by a qualified professional. Payment can be spread over multiple instalments, in up to 10 instalments.

Tips for reliable fitting on the S63 engine

Turbo failure on this type of forced-induction engine is most commonly caused by inadequate lubrication, oil that does not meet the manufacturer's specifications, overdue oil changes, or a clogged air filter. Before fitting, check the oil circuit, the condition of the hoses, and the cleanliness of the air intake to prevent any contamination of the new turbo. When starting the engine for the first time, prime the lubrication circuit with oil before initial start-up, and drive gently during the first few kilometres to protect the new part.