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Detroit DD15 turbo B3G A4720901480 front view

B3G A4720901480 Turbocharger for Detroit DD15 14.8L

DD15

The B3G (A4720901480) is a BorgWarner turbocharger for the Detroit DD15 14.8L engine, used in Freightliner Cascadia and Western Star trucks from 2015-2018. The DD15 is the flagship Detroit engine for the Class 8 highway truck market, rated at 455-560 HP. The DD15 is based on Mercedes-Benz OM472 architecture, so Mercedes A472 series part numbers also apply. This is a VGT turbo with integrated wastegate. Built new with billet compressor wheel, dynamically balanced, ships with gaskets. We supply shops, fleets, and distributors.

Turbo Model

B3G (BorgWarner, VGT with wastegate)

OEM / Interchange Numbers

4720901480, A4720901480, EA4720901480, R4720901480, RA4720901480

Application

2015-2018 Detroit DD15 14.8L (Freightliner Cascadia, Western Star)

Service & Support

  • 1-Year Unlimited-Mileage Warranty
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FAQ

The B3G (A4720901480) fits the Detroit DD15 14.8L engine in Freightliner Cascadia and Western Star trucks, 2015-2018.

No. The DD13 uses different B3G configurations with A471 Mercedes numbers. The DD15 uses A472 numbers. Not interchangeable.

Yes. The A4720901880 covers 2018+ DD15 applications. Match by part number on the turbo nameplate.

Brand new, billet compressor wheel, dynamically balanced. No core charge. One-year unlimited-mileage warranty.

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

B3G for Detroit DD15: The Flagship Class 8 Turbo

The DD15 powers the majority of Freightliner Cascadia trucks on American highways. At 14.8 liters and up to 560 HP, it is one of the most powerful engines in the Class 8 segment. The B3G turbocharger is the VGT unit manufactured by BorgWarner for this engine.

DD15 vs DD13 — different turbos

The DD15 (14.8L, A472 Mercedes numbers) and the DD13 (12.8L, A471 Mercedes numbers) use different B3G configurations. Do not cross-reference between DD13 and DD15 turbos.

DD15 turbo variants by year

YearsKey part #
2015-2018 (this page)A4720901480
2018+A4720901880

Match by the Mercedes A-number or BorgWarner number on your old turbo.

Installation

  • 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 and wastegate operation through ECM.

See our quality process for details.

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