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Parts for Detroit Diesel 671 Turbo - Exhaust Section
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Parts for Detroit Diesel 6-71 Turbo – Exhaust Section
The Detroit Diesel 6-71 Turbo engine is one of the most iconic powerplants in marine, industrial, and generator applications. Known for its inline-six, two-stroke design and unmatched reliability, the 6-71 Turbo delivers efficient power and long-term durability when properly maintained. A key component of that performance lies in the exhaust system—responsible for directing exhaust gases safely away from the engine, maintaining turbocharger efficiency, and ensuring optimal combustion temperatures.
This catalog provides a complete breakdown of exhaust components for the Detroit Diesel 6-71 Turbo engine, including manifolds, gaskets, studs, insulation, elbows, caps, flexible hoses, and supporting accessories. Each component listed here is engineered to meet or exceed OEM specifications and is backed by Diesel Pro Power’s proven track record of serving over 40,000 satisfied customers worldwide. Whether you’re restoring a marine vessel, maintaining an industrial generator, or operating heavy machinery, these exhaust parts ensure your 6-71 Turbo runs efficiently and safely for years to come.
Detroit Diesel Marine Water-Cooled Manifold for 6-71 Turbo Engines
The Detroit Diesel Marine Water-Cooled Manifold is designed to manage exhaust heat in marine environments, where compact engine rooms demand efficient temperature control. This manifold, compatible with both the 6-71 and 12V71 models, features robust water passages that circulate coolant around the exhaust flow, preventing overheating and protecting surrounding components.
Built from corrosion-resistant materials, it withstands prolonged exposure to seawater and exhaust heat without cracking or warping. The manifold requires 1-inch threaded fittings, ensuring a tight and leak-free connection to the cooling system.
For marine operators, this component is essential not only for performance but also for safety. Proper exhaust temperature control reduces the risk of engine room fires and extends the lifespan of gaskets, hoses, and other peripheral parts.
Head-to-Manifold Gaskets
Gaskets are crucial for sealing high-pressure exhaust connections between the cylinder head and manifold. Diesel Pro Power offers two configurations compatible with the 6-71 Turbo engine:
Detroit Diesel Head to Manifold Gasket (6-71 / 12V71)
This gasket ensures a tight seal between the head and manifold, preventing leaks that could reduce turbocharger efficiency or introduce backpressure. Manufactured from high-temperature composite materials, it maintains sealing integrity under extreme thermal cycling.
Detroit Diesel Head to Manifold Gasket (Series 71 & 92)
A multi-series gasket compatible with 4-71, 6-71, 8V71, 12V71, 16V71, and Series 92 engines, providing flexibility for fleets or shops maintaining multiple Detroit Diesel models. The advanced material composition provides consistent compression and prevents exhaust blow-by—crucial for maintaining boost pressure in turbocharged systems.
Each engine requires multiple gaskets, and Diesel Pro Power offers them individually to simplify partial repairs or full manifold replacements.
Marine Exhaust Manifold Flange Gasket
The Marine Manifold Flange Gasket creates a durable seal between the manifold and exhaust flange. Measuring 6.25" outside diameter and 4.25" inside diameter, it’s designed for precise fitment and longevity under fluctuating exhaust pressures.
This gasket’s role extends beyond sealing—it helps maintain optimal exhaust gas flow, reducing the risk of leaks that could affect oxygen balance and turbo spool times. Its reinforced composite material resists heat degradation, corrosion, and vibration damage.
Turbo Riser Gasket
Turbo riser gaskets must withstand the most extreme temperatures in the exhaust system, as they sit between the turbocharger and riser assembly. This gasket features an inner width of 2 inches and length of 3.75 inches, with an outer width of 3.75 inches and length of 5.5 inches.
Precision-cut to ensure perfect alignment, it supports a uniform seal that keeps exhaust gases directed through the turbocharger without loss of pressure or heat. When replaced periodically, it preserves turbine efficiency and prevents soot leakage, which can degrade nearby components.
Manifold Insulation Tapes
Thermal management is vital for turbocharged Detroit Diesel engines. Diesel Pro Power offers insulation tapes in two sizes:
These insulation tapes wrap around manifolds, pipes, and elbows, minimizing radiant heat in the engine compartment. By lowering ambient temperatures, they protect nearby electrical and fuel components from heat damage. In marine settings, insulation also improves crew safety and reduces the chance of heat-related fatigue on adjacent materials.
Each roll is made from high-performance fiberglass with a heat-resistant adhesive backing for secure installation even in high-vibration environments.
Exhaust Mounting Hardware
To maintain the integrity of your exhaust assembly, Diesel Pro Power offers all the necessary mounting hardware for Detroit Diesel 6-71 Turbo engines.
Durable 7/16" – 14/20 x 2.10" studs ensure secure fastening of exhaust manifolds to the cylinder head. Their high-tensile strength design withstands repeated thermal cycles without loosening, warping, or fracturing.
The manifold crab serves as a structural bracket that evenly distributes clamping pressure across manifold joints. Precision-machined and corrosion-resistant, it prevents localized stress fractures common in older manifolds.
Each washer and nut is designed to fit perfectly with Detroit Diesel’s exhaust manifold studs, ensuring balanced torque application. Manufactured from heat-treated steel, these components maintain clamping force under extreme vibration and temperature swings.
Marine Manifold Water Outlet Plate and Gasket
Proper water circulation through the manifold is crucial in marine configurations. The marine manifold water outlet plate serves as the termination point for coolant exiting the exhaust manifold. Constructed from corrosion-resistant alloy, it ensures a leak-free connection to the water discharge system.
Accompanying it is the gasket for Series 71 and 92 engines, which forms a durable seal between the plate and manifold, preventing coolant seepage that could cause corrosion or reduce cooling efficiency.
Threaded Plates and Marine Elbows
Marine manifolds rely on multiple threaded fittings for coolant lines, pressure sensors, and auxiliary outlets.
This threaded plate integrates directly into the manifold’s water jacket. It allows for connection to external cooling circuits, temperature senders, or auxiliary discharge lines. Each plate requires two 5/16"-18 x 1 1/8" bolts for secure installation.
Available in 1-inch and 3/4-inch thread configurations, these elbows are ideal for connecting water or exhaust hoses in confined engine spaces. Their 90-degree design reduces strain on hoses while maintaining steady flow rates.
45-Degree Marine Elbow (3/4" Thread)
Where space constraints or system design require angular fittings, the 45-degree elbow offers a smoother transition for exhaust or coolant routing, reducing turbulence and improving efficiency.
All elbows are constructed from corrosion-resistant brass or bronze alloys—materials that resist seawater exposure and maintain long service life under high temperatures.
Muffler Caps for Industrial and Marine Engines
Protecting your exhaust outlet is essential for preventing water and debris intrusion, particularly when engines are inactive. Diesel Pro Power offers a range of muffler caps sized from 3" to 5" diameters.
Each cap automatically opens during exhaust flow and closes when the engine is off, safeguarding internal components from rain, spray, or dust. The stainless-steel construction ensures smooth operation and long-term rust resistance, even in humid or saline environments.
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3” Cap: Ideal for compact auxiliary engines.
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3.5” Cap: Suited for standard marine generator sets.
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4.5” Cap: Designed for mid-size propulsion systems.
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5” Cap: Recommended for high-output industrial or full-size marine engines.
These caps are an inexpensive yet critical investment in maintaining exhaust system integrity.
Flexible Metal Exhaust Hoses
Vibration and movement in marine engines require flexibility in the exhaust line. Diesel Pro Power’s flexible metal exhaust pipe (4" diameter x 18" length) absorbs vibration, prevents stress fractures in rigid sections, and facilitates custom routing in tight engine compartments.
Made from reinforced stainless steel with threaded ends, these hoses resist both thermal fatigue and corrosion. They also simplify installation by allowing minor adjustments without cutting or welding. This flexibility ensures consistent exhaust flow and prevents gas leaks at connection points—crucial for maintaining turbocharger backpressure and efficiency.
Temperature Switch
The temperature switch is a small but vital safety device used across Detroit Diesel, Cummins, and Caterpillar engines. Calibrated to close at 205°F, it signals high-temperature conditions and can activate alarms or shutdown mechanisms to protect the engine.
Its 1/2" NPT thread size allows for universal fitment in manifold or cooling system ports. By maintaining awareness of temperature fluctuations, operators can prevent overheating damage to critical components like the turbocharger and manifold.
Detroit Green Paint for Engine Restoration
After servicing the exhaust system, refinishing your Detroit Diesel engine with Detroit Green Paint restores its factory appearance and provides corrosion protection. This high-heat, chemical-resistant enamel withstands engine compartment temperatures and resists oil and fuel stains.
Available for ground shipping in the USA and Canada, it’s a popular finishing touch for restorations and professional rebuilds, giving your 6-71 Turbo engine a clean, authentic look that matches OEM color standards.
Gauges and Monitoring Accessories
Maintaining visibility into your engine’s performance is as important as maintaining its hardware. Diesel Pro Power supplies a wide range of mechanical and electrical gauges compatible with Detroit Diesel 6-71 Turbo engines:
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Mechanical Gauges (Standard) – Reliable readings without electrical dependence.
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Mechanical Gauges with Alarm – Adds audible alerts for high temperature or pressure deviations.
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Electrical Gauges (12V / 24V) – For modern control panels and monitoring systems.
These instruments help monitor exhaust temperature, coolant flow, and oil pressure, ensuring optimal operation and longevity.
Why Buy Detroit Diesel 6-71 Turbo Exhaust Parts from Diesel Pro Power
Unmatched Expertise and Global Reach
Diesel Pro Power has become the leading supplier of Detroit Diesel engine parts worldwide, with over 40,000 satisfied customers. Our team specializes in supporting legacy Detroit Diesel engines like the 6-71 Turbo—offering both hard-to-find and newly manufactured components.
Premium Aftermarket Parts
Each component listed on this page is engineered to meet or exceed Detroit Diesel factory specifications. From manifolds to gaskets, every part is precision-tested for fit, performance, and thermal durability. This ensures that once installed, your 6-71 Turbo engine delivers the same dependable performance it was known for when new.
Fast Global Shipping and Reliable Inventory
All items shown here are in stock and ready to ship. Diesel Pro Power maintains a global logistics network to deliver parts quickly to customers across North America, the Caribbean, South America, Europe, and beyond. Every order includes real-time tracking and transparent updates from checkout to delivery.
Dedicated Customer Support
Our expert support team provides one-on-one assistance with installation questions, part identification, and compatibility verification. With decades of combined experience working exclusively on Detroit Diesel engines, we’re more than a parts supplier—we’re your technical partner in keeping these engines running at peak efficiency.
Proven Marine and Industrial Performance
From commercial tugboats and trawlers to stationary generators and pump stations, Diesel Pro Power parts are trusted by professionals in industries where reliability is non-negotiable. Our exhaust system components are built for performance under extreme marine and industrial conditions—offering longevity, safety, and consistent output.
