New BMW 4 Series 418d/420d Turbo – Ref. 54409880046
- 100% secure online payment
- Delivery to your garage or home, anywhere in Europe
- 12-month parts warranty
- Reconditioned and checked turbo
- Part
- Turbo
- Part type
- New turbo
- Make
- BMW
- Model
- 4 Series
- Engine
- 418d, 420d
- Fuel
- Diesel
- Equivalent references
- 54409880046, 11658513640, 11658513641, 54409880032, 8513640, 851364002, 851364003, 851364004, 851364005, 851364006, 851364007, 8513641, 851364102, 851364103, 851364104, 851364105, 851364106, 851364107
- Warranty
- 12 months
An expert is here to help
Not sure you've found the right part?
Why the turbo fails on a BMW 4 Series 418d and 420d
On the 2.0 Diesel engines of the 4 Series fitted with engine codes N47D20C and B47D20A, the turbocharger is put under particular strain during prolonged over-revving and repeated short journeys that prevent the oil from reaching its optimal operating temperature. A blocked diesel particulate filter, degraded engine oil, or irregular maintenance of the boost circuit hoses all contribute to premature wear of the turbine and bearing system. Aggressive acceleration without a proper warm-up period can also accelerate fatigue of the internal components.
Compatibility of the new turbo for your 4 Series
This new turbo is compatible with reference 54409880046, covering the 418d and 420d engines (2.0 Diesel, 1995 cm³) fitted with engine codes N47D20C and B47D20A. Before placing an order, it is strongly recommended that you check the reference marked on your old turbo or on the engine identification plate, as certain power variants may share similar but non-interchangeable components.
Warranty and delivery of the BMW 4 Series turbo
This new turbo is sold as a straightforward purchase: it is a brand-new part, delivered directly, with no return or collection of the old turbo required. It comes with a 12-month parts warranty, subject to fitting by a qualified professional. Payment can be spread over up to 10 instalments to make your purchase easier.
Fitting advice for the turbo on your 418d or 420d
Before installation, check the condition of the oil circuit, the cleanliness of the lubrication hoses, and that there is no excessive play at the air intake, in order to avoid any further premature failure. Remember also to check the air filter and the condition of the intercooler — components that are often overlooked but have a direct impact on turbo service life. When starting up for the first time, prime the new turbo with oil before the initial engine start, to ensure immediate lubrication of the bearings as soon as the circuit comes under pressure.
This same turbo also fits
Why the turbo fails on a BMW 4 Series 418d and 420d
On the 2.0 Diesel engines of the 4 Series fitted with engine codes N47D20C and B47D20A, the turbocharger is put under particular strain during prolonged over-revving and repeated short journeys that prevent the oil from reaching its optimal operating temperature. A blocked diesel particulate filter, degraded engine oil, or irregular maintenance of the boost circuit hoses all contribute to premature wear of the turbine and bearing system. Aggressive acceleration without a proper warm-up period can also accelerate fatigue of the internal components.
Compatibility of the new turbo for your 4 Series
This new turbo is compatible with reference 54409880046, covering the 418d and 420d engines (2.0 Diesel, 1995 cm³) fitted with engine codes N47D20C and B47D20A. Before placing an order, it is strongly recommended that you check the reference marked on your old turbo or on the engine identification plate, as certain power variants may share similar but non-interchangeable components.
Warranty and delivery of the BMW 4 Series turbo
This new turbo is sold as a straightforward purchase: it is a brand-new part, delivered directly, with no return or collection of the old turbo required. It comes with a 12-month parts warranty, subject to fitting by a qualified professional. Payment can be spread over up to 10 instalments to make your purchase easier.
Fitting advice for the turbo on your 418d or 420d
Before installation, check the condition of the oil circuit, the cleanliness of the lubrication hoses, and that there is no excessive play at the air intake, in order to avoid any further premature failure. Remember also to check the air filter and the condition of the intercooler — components that are often overlooked but have a direct impact on turbo service life. When starting up for the first time, prime the new turbo with oil before the initial engine start, to ensure immediate lubrication of the bearings as soon as the circuit comes under pressure.
This same turbo also fits
Frequently asked questions
Everything you need to know before ordering your part.
