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Parts for Detroit Diesel 471 Turbo for Canada - Exhaust Section

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Parts for Detroit Diesel 471 Turbo – Exhaust Section

The Detroit Diesel 4-71 Turbo engine, part of the legendary Series 71 family, is renowned for its rugged reliability and versatility across marine, industrial, and generator applications. Its exhaust system plays a critical role in regulating engine temperature, optimizing turbo performance, and ensuring smooth operation under continuous load. At Diesel Pro Power, we provide a comprehensive selection of exhaust components specifically designed to maintain or restore your 471 Turbo’s performance to factory standards. Each part is engineered for durability, corrosion resistance, and compatibility with Detroit Diesel’s original design—making Diesel Pro the trusted source for professional rebuilders and marine operators worldwide.


Marine Exhaust Manifold Assembly

The Detroit Diesel Marine Manifold is a key part of the exhaust section, ensuring efficient heat dissipation while directing exhaust gases safely out of the engine. Designed for turbocharged configurations, this marine water-cooled manifold supports multiple Series 71 applications, including the 4-71, 8V71, and 16V71. The precision-cast housing withstands extreme exhaust temperatures while preventing thermal expansion and cracking, a common issue in older cast-iron manifolds.

Marine manifolds in the 471 Turbo application include threaded connections for water jackets, ensuring cooling water flows around the exhaust chamber. This design prevents overheating and helps maintain optimal exhaust gas velocity for efficient turbo operation.

When replacing or servicing the manifold, it’s crucial to also inspect mounting hardware, gaskets, and elbows. Diesel Pro Power offers every component required to perform a complete marine exhaust system rebuild — from the manifold body itself to the smallest retaining nut.


Gaskets for Head-to-Manifold and Turbo Connections

Proper sealing is essential to maintain exhaust system integrity. The Detroit Diesel Head-to-Manifold Gasket ensures that exhaust gases do not leak between the cylinder head and manifold flange. For turbocharged 471 engines, these gaskets must withstand not only heat but also the added pressure from forced induction. Made of high-quality composite or metal-reinforced materials, these gaskets provide a tight, durable seal even in continuous high-load operation.

The Turbo Riser Gasket plays an equally vital role. It sits between the turbo riser and exhaust outlet, preventing hot gas leaks that can lead to efficiency loss or turbo damage. The gasket dimensions — inner width 2”, inner length 3.75” — are carefully matched to Detroit Diesel’s specifications, ensuring perfect alignment. A fresh gasket should always be installed when removing or reattaching the turbocharger to prevent exhaust blow-by and maintain consistent boost pressure.

For the manifold outlet, the Marine Exhaust Manifold Flange Gasket and Industrial Flange Gaskets (available in both 3” and 4” diameters) provide reliable sealing for exhaust piping connections. Whether used in marine wet exhaust systems or dry industrial setups, these gaskets resist both thermal stress and vibration.


Mounting Hardware – Studs, Nuts, Washers, and Crabs

A strong exhaust assembly depends on proper mounting hardware. Diesel Pro Power supplies Manifold Studs, Washers, Nuts, and Crabs specifically designed for the Detroit Diesel 471 Turbo.

  • Manifold Studs (7/16"-14/20 x 2.10") are manufactured from hardened steel to withstand repeated thermal cycles without warping or stripping.

  • Manifold Washers and Nuts maintain tension and alignment under constant heat expansion. The washers distribute torque evenly, while the nuts are plated for corrosion protection.

  • The Manifold Crab (a curved bracket-like fastener) provides secure clamping between manifold sections and is essential for maintaining exhaust tightness in multi-section manifolds.

Replacing aged hardware during manifold installation is recommended, as corrosion and fatigue can compromise the exhaust system’s stability and alignment.


Marine Manifold Plates, Gaskets, and Threaded Outlets

The Marine Manifold Outlet Plate and Threaded Plates are critical in sealing and controlling coolant flow in water-cooled exhaust manifolds. These plates are installed at the manifold ends, allowing cooling water to circulate evenly. The Manifold Outlet Plate includes compatible gaskets (like the Series 71 & 92 water outlet gasket) for watertight sealing.

The Threaded Plate (3/4" thread) allows integration of marine fittings such as elbows, temperature sensors, or coolant drains. Diesel Pro Power provides both 3/4" and 1" threaded options to fit various Detroit Diesel manifold configurations.


Elbows and Fittings – 90° and 45° Connections

Exhaust elbows direct the flow of exhaust gases or cooling water through tight engine compartments. Diesel Pro offers multiple elbow options:

  • 90° Marine Manifold Elbow – 1" Thread: Ideal for standard marine manifold water outlet routing.

  • 90° Elbow – 3/4" Thread: Compact and durable, commonly used in auxiliary cooling circuits.

  • 45° Marine Manifold Elbow – 3/4" Thread: Provides angled routing where space constraints prevent full 90° bends.

Each elbow is precision-machined with NPT threading for secure fitment and manufactured from corrosion-resistant materials suited to marine environments.


Industrial Exhaust Components – Flanges, Mufflers, and Caps

For land-based Detroit Diesel 471 Turbo engines, Diesel Pro Power provides complete industrial exhaust solutions:

  • Flanges available in 3” and 4” inner diameters to adapt manifold outlets to piping systems.

  • Gaskets for Flanges engineered to handle vibration and thermal expansion.

  • Industrial Mufflers — offered in 3” and 4” diameters — effectively reduce engine noise while maintaining optimal backpressure for turbo operation. The mufflers’ internal baffles and reinforced seams ensure long-term reliability in generators and stationary equipment.

To prevent contamination and water intrusion when the engine is off, Muffler Caps are available in multiple diameters (3”, 3.5”, and larger). These caps are essential in outdoor or marine environments to protect the exhaust outlet.


Flexible Metal Exhaust Hose

The Flexible Metal Exhaust Hose (4” x 18”) allows vibration isolation and ease of installation between rigid exhaust components. Its corrugated metal design absorbs movement and thermal expansion, preventing cracking in manifolds or turbo joints. It’s particularly useful for marine engines mounted on soft isolators or industrial units exposed to constant vibration.

This component provides a tight seal, resists corrosion, and can withstand extreme exhaust temperatures without collapsing or leaking.


Insulation and Thermal Protection

Managing heat is crucial for both performance and safety. Diesel Pro Power offers Insulation Tape in 3” and 4” widths (100 feet per roll, 1/8” thick) designed for wrapping manifolds and exhaust piping. This fiberglass-based tape minimizes radiant heat in engine compartments, protecting nearby wiring and hoses.

Applying manifold insulation also helps maintain exhaust gas velocity, which improves turbocharger spool-up and efficiency. For marine applications, it further reduces cabin heat and the risk of burns during maintenance.


Auxiliary Components – Thermostat Gasket & Temperature Switch

The Detroit Diesel Thermostat Gasket provides a reliable seal for the thermostat housing, ensuring coolant remains contained during circulation. A proper gasket prevents coolant leaks, which can affect exhaust cooling and overall engine temperature balance.

The Temperature Switch closes at 205°F and features a 1/2” NPT thread, making it suitable for Detroit Diesel, Cummins, and Caterpillar engines. This component is often used to trigger alarms or shutdowns in marine panels, preventing overheating that could damage exhaust components.


Paint and Finishing

To complete an overhaul or repair, Diesel Pro Power offers Detroit Green Engine Paint, the classic finish recognized across the marine and industrial sectors. This heat-resistant coating provides not only the original appearance but also corrosion protection for manifolds, valve covers, and engine blocks. It’s suitable for touch-ups or full restorations and can be shipped via ground within the U.S. and Canada.


Gauges for Exhaust and Temperature Monitoring

Accurate monitoring is essential for turbo engines. Diesel Pro Power carries:

  • Mechanical Gauges (Standard and with Alarms) – Ideal for direct reading of exhaust or coolant temperature.

  • Electrical Gauges (12V and 24V) – Used in modern control panels for remote monitoring and automated shutdowns.

Integrating these gauges ensures early detection of heat buildup, helping operators maintain ideal exhaust temperatures and extend turbocharger life.


Why Buy Detroit Diesel 471 Turbo Exhaust Parts from Diesel Pro Power

Diesel Pro Power stands apart as the world’s most trusted online source for Detroit Diesel parts, serving over 40,000 satisfied customers globally. Every component listed is either brand-new or expertly remanufactured to meet OEM performance standards. Our inventory is curated exclusively for Detroit Diesel engines, ensuring compatibility, reliability, and longevity.

Key benefits include:

  • Same-Day Shipping Worldwide: Orders placed before 3 PM EST ship out the same day.

  • Detailed Online Catalogs: Each part listing includes specifications, dimensions, and clear visuals to eliminate guesswork.

  • Dedicated Support: Our experienced team understands Series 71 engines inside and out, guiding customers through installation and compatibility questions.

  • Guaranteed Quality: All parts undergo strict quality assurance testing before shipping, ensuring superior durability in both marine and industrial environments.

  • Secure Global Delivery: Fast, insured shipping options with real-time tracking and multi-language customer service.

Whether maintaining a classic Detroit Diesel 471 Turbo in a fishing vessel, a tugboat, or a power generator, Diesel Pro Power provides every essential exhaust component in one place. From the smallest manifold nut to complete marine manifolds, each product reflects our commitment to keeping legacy Detroit Diesel engines performing for decades to come.

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