Recmar REC3801173 is an aftermarket marine turbocharger intended as a replacement for the turbo fitted to Volvo Penta D4-300 diesel engines (3.67L / 300 HP, application dependent). It cross-references key Volvo Penta OEM numbers used on this D4-300 turbo application and the corresponding BorgWarner K26 turbo family.

Before ordering: confirm your exact engine variant (e.g. D4-300A/D/I) and match the part number on the turbo currently fitted.

• Part: Turbocharger
• Fits engines: Volvo Penta D4-300 marine diesel (D4 series 3.67L applications)
• OEM cross-references: Volvo Penta 3801173, 3887963 (also referenced as 3829638, 3835914)
• Turbo cross-reference: BorgWarner K26 (P/N 53269987105; alt. 53269707105)
• Aftermarket brand: Recmar (Recambios Marinos), REC3801173
• Recommended gasket kit (sold separately): Volvo Penta 3588435 (Recmar REC3588435)
• Notes: Fitment can vary by engine serial number and installation—always confirm compatibility before purchase.