JT1198 Aftermarket Detroit Diesel 6-71TI Dry-Turbo Exhaust Mixing Elbow | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Detroit Diesel 6-71TI Dry-Turbo Exhaust Mixing Elbow - Part Number: JT1198

A long dry-turbo stainless exhaust mixing elbow for Detroit Diesel 6-71TI 425HP and 450HP marine engines. The HDI DET5-90 arrangement uses a circular V-band turbo connection and a 90-degree cooling-water inlet.

⚙️ Key Features

• Cast AISI 316 stainless construction

• Dry-turbo circular V-band connection

• Approximately 38-degree exhaust bend

• 2-inch cooling-water inlet

• Approximately 8-inch wet-exhaust outlet

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• HDI DET5-90 is the direct long dry-turbo replacement configuration

• HDI DET4-90 and DET4-180 are related wet-turbo configurations

OEM / Related Numbers:

• JT1198

• HDI DET5-90

• HDI DET4-90

• HDI DET4-180

• HDI DET35C

• HDI DET45C

Aftermarket / Verified Equivalents:

• HDI Marine: DET5-90

Included Components:

• Dry-turbo mixing elbow - Part Number: HDI DET5-90

• V-band clamp - Part Number: HDI DET35C

• 90-degree bronze water hose-barb kit - supplied with DET5-90

• Blanking plate - Part Number: HDI DET45C

🚤 Compatibility

Commonly used on:

• Detroit Diesel 6-71TI dry-turbo wet-exhaust systems

Typically suits:

• Engine models:

• Detroit Diesel 6-71TI 425HP dry-turbo marine

• Detroit Diesel 6-71TI 450HP dry-turbo marine

• Exhaust Bend: approximately 38°

• Cooling-Water Inlet: 2 in

• Exhaust Outlet: approximately 8 in / 197-203mm

• Material: cast AISI 316 stainless steel

🔌 Function

The elbow connects to the dry turbocharger outlet, raises and turns the exhaust path, then injects seawater downstream of the turbo.

Common signs of failure:

• External corrosion, cracking or pin-hole leakage

• Internal carbon, rust or salt restriction

• Cooling water entering the manifold, turbocharger or cylinders

• Steam, reduced cooling-water discharge or an abnormally hot exhaust hose

• Loss of power caused by excessive exhaust back-pressure

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective packaging