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Detroit DD15 turbo B3G A4720901880 front view

B3G 4720901880 Turbocharger for Detroit DD15 GHG17 2017-2020

The B3G (A4720901880) is a BorgWarner turbocharger for the Detroit DD15 14.8L engine, covering 2017-2020 (GHG17) model years in Freightliner Cascadia and Western Star trucks. This is the updated DD15 turbo configuration compared to the A4720901480 used on 2015-2018 models. Different part numbers, different internal calibration. Match by the Mercedes A-number or BorgWarner number on your old turbo nameplate. Built new, dynamically balanced, ships with gaskets. We supply shops, fleets, and distributors.

Turbo Model

B3G (BorgWarner, VGT)

OEM / Interchange Numbers

4720901880, 4720902880, A4720901880, A4720902880, EA4720901880, EA4720902880

Application

2017-2020 (GHG17) Detroit DD15 14.8L (Freightliner Cascadia, Western Star)

Service & Support

  • 1-Year Unlimited-Mileage Warranty
  • US Stock, Fast Dispatch
  • Bulk Orders Welcome
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FAQ

The A4720901480 covers 2015-2018 DD15 applications. The A4720901880 (this page) covers 2018+ DD15 applications. Different internal calibrations, not interchangeable. Match by part number.

Detroit DD15 14.8L in 2018+ Freightliner Cascadia and Western Star trucks.

Brand new, 100% new components, dynamically balanced. No core charge. One-year unlimited-mileage warranty.

Yes. US stock, volume pricing for shops, fleets, and distributors.

B3G A4720901880: Updated DD15 Turbo for 2017-2020 (GHG17)

The 2017-2020 (GHG17) DD15 uses an updated B3G turbo configuration. If you are replacing a turbo on a 2018 or newer Freightliner Cascadia with the DD15, make sure you order the A4720901880 and not the earlier A4720901480.

DD15 turbo by year

YearsKey part #
2015-2018A4720901480
2017-2020 (GHG17) (this page)A4720901880 / A4720902880

Match by the exact part number on your old turbo.

Cross Reference Numbers

This turbocharger replaces the following OE and interchange numbers:

  • 4720901880 / 4720902880
  • A4720901880 / A4720902880
  • EA4720901880 / EA4720902880

Related numbers: 4720901480 (GHG14) and 4720902780 (GHG21).

Installation and Care

  • Find out why the old turbo failed before installing the new one. Oil starvation or contaminated oil will destroy the replacement the same way.
  • Change the engine oil and filter. Flush or replace the oil feed line.
  • Direct bolt-on replacement for the DD15 B3G.
  • Replace exhaust manifold and oil drain gaskets (included).
  • Flush oil feed line. Prime turbo before startup.
  • Verify VGT operation through ECM.

See our quality process for details.

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