Parts for Detroit Diesel 6V71 Turbo - Exhaust Section

Parts for Detroit Diesel 6V71 Turbo – Exhaust Section

The Detroit Diesel 6V71 Turbo engine is one of the most iconic powerplants ever built by Detroit Diesel, offering a strong balance of torque, responsiveness, and durability. Its turbocharged version, found in marine, industrial, and on-highway applications, relies heavily on a well-maintained exhaust system to regulate back pressure, optimize airflow, and prevent overheating. Diesel Pro Power’s complete catalog of exhaust components for the Detroit Diesel 6V71 Turbo ensures that owners, operators, and rebuilders have direct access to premium-quality parts that match OEM standards and specifications.

Turbo Exhaust Inlet Connection Gasket

The turbo exhaust inlet gasket is a crucial sealing component located between the turbocharger and exhaust manifold. Designed for high-temperature operation, it ensures that exhaust gases are properly directed into the turbo without leaks that could reduce turbine efficiency or cause heat damage to nearby components. For the Detroit Diesel 6V71 Turbo, this gasket’s 5.37” outer diameter and 2.74” inner diameter match perfectly to the turbo housing and manifold joint, maintaining optimal pressure and preventing exhaust leaks that would otherwise compromise boost performance.

Diesel Pro Power supplies this gasket made with reinforced high-heat composite materials to resist warping and cracking under continuous heat cycles—ideal for engines that operate in marine engine rooms or industrial enclosures with minimal ventilation.

Marine Exhaust Manifold

The marine exhaust manifold for the Detroit Diesel 6V71 Turbo is precision-engineered to channel exhaust gases from each cylinder bank into the turbocharger efficiently. Built from high-grade cast iron and designed for corrosion resistance, the manifold withstands the intense thermal cycling and vibration common in marine environments. The water-cooled jacket integrated into the manifold helps maintain safe surface temperatures, protecting surrounding components and ensuring a long operational life.

At Diesel Pro Power, all manifolds are either new or remanufactured to exacting Detroit Diesel specifications. Each unit undergoes inspection for internal cracks, water passage integrity, and flatness. Properly functioning manifolds ensure that your 6V71 Turbo maintains consistent boost pressure and engine balance, which translates to better throttle response and fuel economy.

Head to Manifold Gasket

The head-to-manifold gasket serves as the thermal and gas-tight seal between the cylinder head exhaust ports and the manifold inlet. In a turbocharged setup like the 6V71T, this gasket must handle extreme combustion temperatures and pressures. Diesel Pro Power’s version uses reinforced materials capable of withstanding heat spikes that occur during rapid acceleration or heavy load conditions, ensuring no exhaust gas leaks that could lead to power loss or manifold pitting.

Replacing these gaskets during routine service prevents exhaust leaks that can cause uneven turbo boost, cylinder imbalance, and potentially cracked manifolds.

Marine Riser Connector

The riser connector bridges the exhaust manifold to the riser assembly, allowing gases to transition smoothly from the manifold to the overboard discharge or muffler system. Diesel Pro Power’s marine riser connectors for Detroit Diesel 6V71 Turbo engines are built to resist saltwater corrosion and internal scaling. These connectors can be installed on either side of the engine, ensuring flexibility in engine room configurations.

In marine applications, the riser connector also plays a critical role in preventing water backflow into the engine’s turbocharger or exhaust valves. Each connector supplied by Diesel Pro Power is designed with precision-machined surfaces to maintain an exact fit and consistent sealing pressure.

Turbo Riser Adaptor

The turbo riser adaptor connects the turbo outlet to the exhaust riser, managing the flow of hot gases away from the turbo and into the wet exhaust system. Diesel Pro Power’s adaptor for the Detroit Diesel 6V71 Turbo features a robust 3.125” inner diameter and 6.25” outer diameter, ensuring an exact match to OEM configurations. The heavy-duty construction helps minimize vibration stress on the turbo outlet, a common cause of cracking in lower-quality parts.

Its 1.25” height provides the ideal clearance to accommodate thermal expansion and alignment with surrounding fittings. Each adaptor is inspected for precise tolerances to prevent leaks and maintain efficient exhaust gas flow.

Exhaust Insulation Tape

Exhaust insulation tape is vital for maintaining heat within the manifold and preventing heat transfer to nearby components. Diesel Pro Power supplies 3” and 4” wide insulation tapes made from high-temperature fiberglass material, each 100 feet long and 1/8” thick. This insulation enhances engine compartment safety, protects wiring and hoses from heat damage, and contributes to slightly improved turbo efficiency by maintaining higher exhaust gas temperatures before entering the turbine.

These tapes are ideal for marine applications where compact engine compartments demand effective heat management. Properly wrapped manifolds and risers also reduce the risk of burns during maintenance.

Manifold Studs, Crabs, Washers, and Nuts

Fasteners play an often-overlooked yet crucial role in maintaining manifold integrity. The Detroit Diesel 6V71 Turbo manifold assembly uses a combination of studs, crabs, washers, and nuts to ensure even torque distribution and resistance to vibration.

• Manifold Studs: At 7/16"-14/20 x 2.10", these heavy-duty studs provide a secure anchor for the manifold to the cylinder head.
  
  

• Manifold Crabs: These brackets distribute clamping pressure evenly across the manifold flange, preventing warping and maintaining a tight seal.
  
  

• Washers and Nuts: Heat-treated and corrosion-resistant, these components complete the fastening system, ensuring consistent torque retention even under prolonged heat exposure.
  
  

By sourcing these from Diesel Pro Power, customers benefit from hardware that matches OEM tensile strength and thread specifications, eliminating the risk of improper torque or premature loosening.

Marine Manifold Water Outlet Plates & Gaskets

The manifold water outlet plate and its accompanying gasket are designed to regulate the flow of cooling water through the exhaust manifold’s jacket. This helps prevent overheating and prolongs manifold life. Diesel Pro Power’s precision-engineered outlet plates are machined to prevent warping and guarantee a perfect seal with the water jacket.

Gaskets made from marine-grade composite materials ensure long-term reliability even with continuous exposure to saltwater or coolant mixtures. Together, these components maintain the proper temperature balance within the manifold and reduce the risk of localized hotspots.

Threaded Plates and Elbows

The threaded plate with a 3/4” thread opening allows connection to water lines or temperature fittings on the manifold. Diesel Pro Power supplies these plates along with compatible 5/16”-18 bolts for easy installation.

The 90° and 45° elbows—available in 3/4” and 1” threads—are used for routing coolant lines or exhaust discharge fittings efficiently. These brass or stainless steel elbows are corrosion-resistant and tested for marine-grade performance. They provide reliable sealing under vibration and thermal expansion, ensuring consistent coolant circulation or exhaust redirection.

Muffler Caps

Protecting exhaust outlets is essential for marine and stationary Detroit Diesel 6V71 Turbo engines. Muffler caps prevent rainwater, spray, or debris from entering the exhaust pipe when the engine is not running. Diesel Pro Power offers these in 3”, 3.5”, 4.5”, and 5” diameters to match a wide range of configurations. Constructed from durable galvanized or stainless steel, they provide long-lasting protection and rust resistance even in harsh saltwater environments.

For marine vessels, these caps are a small but critical safeguard against hydro-lock, a condition where water enters the cylinders through the exhaust and causes catastrophic damage on startup.

Flexible Metal Exhaust Hose

The flexible metal exhaust hose allows for vibration absorption and alignment between rigid exhaust components. Diesel Pro Power’s 4” x 18” stainless steel hose provides both flexibility and strength, ideal for connecting between the riser and muffler or for accommodating engine movement.

These hoses are essential for reducing stress on welded joints and preventing cracking in the exhaust system. Their corrugated construction and high-temperature tolerance make them perfect for confined marine spaces where rigid piping would be impractical.

Temperature Switch

The temperature switch for Detroit Diesel engines is a vital safety component, closing at 205°F to activate alarms or engine protection systems. This switch fits Detroit Diesel, Cummins, and Caterpillar applications and uses a standard 1/2” NPT thread. Proper monitoring of exhaust and cooling temperatures ensures safe engine operation and early warning of overheating conditions.

Detroit Diesel Green Engine Paint

To maintain authenticity and corrosion resistance, Diesel Pro Power offers Detroit Green paint for all Detroit Diesel engines, including the 6V71 Turbo. This high-heat enamel resists oil, fuel, and salt exposure, restoring the classic look of Detroit Diesel machinery. Only available for ground shipping in the U.S. and Canada, it’s the preferred finish for professional rebuilders and restorers.

Mechanical and Electric Gauges

Monitoring engine performance is key to maintaining reliability. Diesel Pro Power supplies a wide range of gauges compatible with Detroit Diesel 6V71 Turbo engines:

• Mechanical gauges for direct readings of oil pressure, temperature, and boost.
  
  

• Mechanical gauges with alarms that provide an added layer of safety.
  
  

• Electrical gauges in both 12V and 24V configurations for modernized control panels.
  
  

Each gauge is precision-calibrated for marine use, ensuring accuracy even under vibration and temperature fluctuations.

Why Buy Detroit Diesel 6V71 Turbo Exhaust Parts from Diesel Pro Power

Global Trust and Experience
Diesel Pro Power has proudly served over 40,000 satisfied customers worldwide, providing parts for every major Detroit Diesel model. From marine operators to fleet managers, customers rely on Diesel Pro for consistent quality and knowledgeable support.

Unmatched Product Quality
Every exhaust component—whether a new manifold, gasket, or flexible hose—is sourced from trusted manufacturers or remanufactured to exceed OEM specifications. Each product undergoes thorough inspection for structural integrity, fitment accuracy, and corrosion resistance.

Fast, Reliable Shipping
With a fully stocked inventory, Diesel Pro Power offers same-day shipping for most orders. Whether you’re dockside or inland, your parts are packed securely and delivered promptly.

Expert Support
Our experienced technicians understand Detroit Diesel engines inside and out. From identifying the correct gasket to advising on manifold installation torque, Diesel Pro provides real technical guidance—not just sales.

Dedicated to Legacy Engines
As Detroit Diesel’s legacy engines become rarer, Diesel Pro Power ensures continued support for owners who rely on the timeless performance of engines like the 6V71 Turbo. We maintain extensive inventories for both turbocharged and naturally aspirated configurations, preserving the legacy of Detroit Diesel reliability.