HX55 2836376 Turbocharger for Detroit DD15 14.8L

HX55, DD15

The HX55 (2836376) is a Holset turbocharger for the Detroit DD15 14.8L engine in Freightliner Cascadia trucks. While most DD15 engines run BorgWarner B3G turbos, certain DD15 configurations were fitted with this Holset HX55 — the Mercedes A4720960799 number on the nameplate identifies it. Fixed-geometry design, simpler than the VGT B3G units. Holset 2836376/2836378, with cross-references 4049886 and 4049887. Built new, dynamically balanced, ships with gaskets. We supply shops, fleets, and distributors.

Turbo Model

HX55 (Holset, fixed geometry)

OEM / Interchange Numbers

2836376, 2836378, A4720960799, 4049886, 4049887

Application

Detroit DD15 14.8L (Freightliner Cascadia)

Service & Support

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

The HX55 (2836376 / 2836378 / A4720960799) fits specific Detroit DD15 14.8L configurations in Freightliner Cascadia trucks.

Check the nameplate on your old turbo. Holset 2836376/2836378 or Mercedes A4720960799 = this HX55. Other A472 numbers = one of the B3G configurations.

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

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

HX55 for the DD15: The Holset Configuration

The DD15 turbo family is mostly BorgWarner B3G, but this Holset HX55 covers specific DD15 builds. If your old turbo nameplate reads Holset 2836376/2836378 or Mercedes A4720960799, this is your unit. If it reads a different A472 number, see our B3G listings instead.

DD15 turbo reference

TurboKey numberYears
HX55 Holset (this page)2836376 / A4720960799Specific configs
B3GA47209014802015-2018
B3GA47209018802018+
B3G47209027802018+

Installation

  • Direct bolt-on replacement. Ships with gaskets.
  • Flush oil feed line. Replace oil drain gasket.
  • Prime with clean oil, idle 3-5 minutes before loading.

See our quality process for details.