RHC7W 119575-18020 Turbocharger for Yanmar Marine 6LYA-STP

The RHC7W (119575-18020) is an IHI water-cooled turbocharger for the Yanmar Marine 6LYA-STP engine — the higher-output variant of the 6LYA marine diesel family. This is a different RHC7W configuration from the 119574-18010 (6LYA-STE); the two are not interchangeable. Match by the Yanmar number on your old turbo nameplate. Built new, dynamically balanced, ships with gaskets. We supply marine service yards, boat dealers, and distributors.

Turbo Model

RHC7W (IHI, water-cooled marine)

OEM / Interchange Numbers

11957518020, 119575-18020, 12307P22NWBRB6235SUCZ, C72CADS0055B

Application

Yanmar Marine 6LYA-STP

Service & Support

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FAQ

The Yanmar Marine 6LYA-STP diesel engine — the higher-output variant of the 6LYA family.

No. The STE uses the 119574-18010 series. Match by the Yanmar number on your old turbo nameplate.

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

Yes. US stock, volume pricing for marine service yards and distributors.

RHC7W 119575-18020 for Yanmar 6LYA-STP

The 6LYA-STP is the higher-output variant of the Yanmar 6LYA marine diesel family. Its RHC7W turbo carries the 119575-18020 number — do not interchange with the STE unit.

6LYA turbo selection

EngineKey Yanmar #
6LYA-STE119574-18010 series
6LYA-STP (this page)119575-18020

Marine service notes

  • Water-cooled housing — verify raw-water flow at every service.
  • Idle down after hard running to prevent bearing-housing coking.
  • Inspect for salt corrosion at each haul-out.

Installation

  • Direct bolt-on. Ships with gaskets.
  • Connect water-cooling lines and verify flow before sea trial.
  • Flush oil feed line. Prime before first start.

See our quality process for details.