Parts for Detroit Diesel 6V71 Non-Turbo - Cylinder head Section

Detroit Diesel 6V71 Non-Turbo Cylinder Head & Related Components

The Detroit Diesel 6V71 non-turbo engine has long been recognized as one of the most reliable workhorses in the Series 71 family. Used in marine, industrial, and heavy-duty applications, this two-stroke V6 engine is built for endurance and continuous duty. At the core of its performance is the cylinder head assembly, which houses valves, guides, springs, seals, and combustion components that directly affect engine efficiency and reliability.

At Diesel Pro Power, we provide a complete catalog of rebuilt cylinder heads, related hardware, and support components for the Detroit Diesel 6V71 non-turbo engine. Each product is designed to meet or exceed OEM standards, ensuring that marine and industrial operators worldwide can count on dependable operation.

Rebuilt Cylinder Heads for Detroit Diesel 6V71

Bare Rebuilt Cylinder Heads

A bare rebuilt cylinder head provides the essential foundation for a top-end rebuild. These heads are precision-machined and reconditioned to factory tolerances, ensuring correct fitment and performance. Without valves or springs, they allow technicians the flexibility to install their own choice of valve train components.

Rebuilt Heads with Valves & Springs

For those seeking a more complete solution, rebuilt heads fitted with new valves and springs reduce installation time. These assemblies are tested for compression and sealing integrity, allowing for faster turnaround during maintenance.

Complete Rebuilt Cylinder Heads

The most comprehensive option is the fully rebuilt and assembled cylinder head. These heads include valves, springs, guides, seals, retainers, and related components, ready to install immediately. This reduces downtime and eliminates the need for additional machining or assembly.

Valve Train Components for 6V71 Cylinder Heads

The valve train ensures correct air and exhaust flow, efficient combustion, and protection against premature wear. Diesel Pro Power supplies all major 6V71 valve-related components.

Exhaust Valves

The exhaust valves regulate the release of burned gases from the combustion chamber. High-strength alloys are used to withstand extreme heat cycles and pressures, ensuring long service life.

Valve Seals

Valve seals prevent oil from leaking into the combustion chamber, protecting against smoke, fouling, and loss of efficiency. Each cylinder requires multiple seals, and proper installation is essential to avoid premature oil consumption.

Valve Guides

Valve guides stabilize valve movement within the head. Precision-machined guides prevent wobble, reduce wear, and ensure correct valve seating during operation.

Valve Springs

Springs keep valves tightly closed under compression and snap them open at the right time. For the 6V71, springs are designed to withstand high operating RPMs typical of Detroit two-stroke engines.

Valve Seats

Valve seats provide a hardened surface for valves to close against, ensuring proper sealing of the combustion chamber. Inserts are machined to exact dimensions for proper fit.

Valve Caps & Spring Washers

These small but critical components help distribute spring pressure evenly and maintain stability of the valve assembly under high stress.

Cylinder Head Fasteners & Sealing Components

Head Bolts

Cylinder head bolts secure the head assembly to the block, maintaining clamping pressure across the gasket. Diesel Pro offers high-strength replacement bolts engineered for correct torque retention.

Head Gasket Kits

The 6V71 requires two head gasket kits per engine. These gasket kits include all necessary sealing elements to prevent leaks between the head and block, ensuring compression integrity.

Plug Kits

Head plug kits seal various ports within the cylinder head assembly. These plugs are precision-machined to prevent coolant and oil leaks.

Rocker Covers & Gasket Components

Rocker cover components protect the valve train and provide oil sealing.

• Breather Elements – Ensure proper ventilation of crankcase gases.

• Breather Seals – Prevent oil seepage at breather assemblies.

• Rocker Cover Gaskets (Old and New Styles) – Available for tin and aluminum covers, both old-style black rubber and newer gray rubber designs.

• Rocker Cover Kits – Complete kits including seals, gaskets, and hardware for efficient servicing.

Cooling & Water Manifold Components

Proper cooling is essential to prevent overheating in continuous-duty engines.

• Water Manifold Gaskets – Provide leak-free sealing for the cooling system.

• Water Outlet Plates – Durable replacement plates ensure correct coolant flow and prevent leaks at head junction points.

• Studs for Water Manifolds – Secure the manifold to the head while withstanding continuous temperature cycling.

Fuel System & Injector-Related Head Components

Fuel delivery in the 6V71 is closely tied to the cylinder head, as injectors and fuel lines are mounted directly into it.

Injector Tubes & Connectors

Injector tubes channel fuel into the combustion chamber. High-precision connectors ensure proper flow without leaks.

Fuel Jumper Lines

Both short and long jumper lines connect fuel injectors. New-style seals and O-rings ensure compatibility with modern diesel fuels.

Specialized Fuel Line Tools

Tools such as socket wrenches and flaring dies ensure correct installation and maintenance of fuel lines, preventing damage to injector tubes during service.

Rocker Arms, Shafts & Cam Followers

The motion of the camshaft is transferred through followers and rocker arms, ensuring precise valve and injector timing.

• Rocker Arms (Left & Right Hand) – Control valve actuation.

• Injector Rocker Arms – Special rocker assemblies for fuel injector operation.

• Rocker Arm Shafts – Provide stable pivot points for rocker arms.

• Cam Followers – Transfer camshaft motion to push rods.

• Push Rods & Retainers – Deliver force to valves and injectors.

• Push Rod Springs & Seats – Maintain proper preload and valve operation.

Additional Head-Related Hardware

• Gaskets – Head to Manifold – Ensure exhaust manifold sealing.

• Oil Filler Caps – Durable replacements designed for Detroit Diesel head covers.

• Temperature Switches – Trigger cooling and safety systems at preset temperatures.

• Fasteners, Washers & Retainers – High-quality replacements for small but essential hardware items.

Cylinder Head Tools for Maintenance

Feeler Gauges

Used to calibrate valve lash, ensuring proper clearance for efficient operation and preventing premature wear.

Injector Tube Flaring Tools

Specialized tools for conditioning and installing injector tubes into the head.

Fuel Line Wrenches

Sockets designed to remove and install injector fuel lines without damaging fittings.

Why Choose Diesel Pro Power for Detroit Diesel 6V71 Cylinder Head Parts

• Trusted by Over 40,000 Customers Worldwide – Serving operators in marine and industrial sectors across more than 180 countries.

• Complete Catalog in One Place – From full cylinder heads to the smallest valve washer, Diesel Pro Power offers everything needed for a 6V71 top-end rebuild.

• Global Shipping – Fast, trackable delivery ensures operators minimize downtime and keep vessels or equipment running.

• Exclusive Focus on Marine & Industrial Engines – Unlike automotive suppliers, Diesel Pro Power specializes in continuous-duty engines like the Detroit Diesel 6V71.

• Expert Technical Support – Our team helps identify correct parts for specific configurations, ensuring compatibility with your exact engine model.

• Ready-to-Ship Inventory – All major cylinder head components are kept in stock, avoiding delays common with other suppliers.