Custom Cast Exhaust Manifolds

For OEM and repeat production, send us your drawing or existing part. YTD handles casting, machining, finishing, and inspection, then delivers the manifold to your specification.

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Exhaust Manifold Applications

YTD has already produced exhaust manifolds by investment casting. Each new part begins with the route from the cylinder head to the outlet and the space available around the engine.

Automotive & OEM Manifolds

Cylinder-head port spacing and outlet position establish the basic fit. For an OEM program, we carry those interfaces from the approved drawing into repeat production.

Turbo Exhaust Manifolds

A cast turbo manifold brings the exhaust paths and turbo connection into a compact part. Investment casting gives the design freedom to form curved passages without building the manifold from a series of welded tubes.

Heavy-Duty & Industrial Manifolds

Diesel and industrial manifolds face repeated heating over long operating hours. Tell us the operating temperature and expected life so we can review the material and wall design together.

Marine Exhaust Manifolds

A marine exhaust manifold has to work with the engine’s cooling arrangement as well as the space around it. Your drawing or sample gives us the starting point for a replacement or new production part.

Exhaust Manifold Materials

Exhaust temperature and service life drive the material choice. Cast iron remains practical for many established engine programs. Heat-resistant steel and stainless steel suit more demanding temperature or corrosion conditions, while high-temperature alloys extend the range further.

If the grade is already on your drawing, we quote to it. If the material is still open, tell us how the engine will be used. We review the alloy together with the casting route and inspection requirements before quoting.

YTD manufactures exhaust manifolds in carbon and alloy steel, stainless steel, heat-resistant steel, and high-temperature alloys, with cast iron options for programs that call for them. The quotation records the final grade, material condition, and verification.

From Casting to Finished Manifold

Choose where the manifold should enter your supply chain. YTD can provide the casting alone or continue to the specified delivery condition.

Raw Manifold Castings

Already have machining capacity in place? We can supply cleaned castings with the required stock left on the areas your team will finish.

Machined Manifolds

YTD can finish the cylinder-head face, outlet or turbo connection, and other drawing-defined interfaces before delivery.

Finished Manifolds

Receive the manifold with the specified treatment, inspection, marking, and packing complete. We check it against the agreed requirements before shipment.

Have a Manifold Project?

You can start with the information available today. Send your drawing, model, or existing part details, and we will identify what is still needed for an accurate quote.

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How We Make Exhaust Manifolds

We start with the manifold you need, then choose a manufacturing route that suits the part.

YTD has made exhaust manifolds by investment casting, a strong route for integrated passages and heat-resistant alloys. Sand casting can serve projects whose size, material, or production volume points to a different solution. You do not need to choose between them before contacting us.

Once the route is set, tooling and casting are planned around the finished part. Machining and inspection then follow the delivery condition on your order.

Fit, Material and Inspection

Before sampling, we agree what will be checked and how the manifold will be accepted. The same standard then carries into production.

Material Identity

For iron- and nickel-based alloys, YTD’s in-house spectrometer checks the chemistry against the specified grade. Your quotation states which material records will be supplied.

Flange Fit

When you order a machined manifold, the cylinder-head and outlet interfaces are finished to the drawing and checked against its dimensional requirements.

Casting Integrity

Internal soundness is checked to the level your application requires. When non-destructive or leak testing is specified, its method and acceptance criteria are defined before production.

Inspection Records

The drawing, approved sample, and inspection records set the production standard. They give your team a clear basis for accepting the first order and future batches.

From RFQ to Production

Start with the part information available today. We close the gaps that affect manufacturing before the production order begins.

Share the Part

A drawing or 3D model gives us the clearest start. An existing manifold can also open the discussion, with engine or OE information providing useful context.

Review the Quote

After the technical review, you receive a manufacturing proposal and quotation that make the work and acceptance requirements clear.

Approve the First Parts

First parts give your engineering and quality teams a physical manifold to inspect and check with the assembly before the production batch begins.

Start Production

Once the sample is accepted, the approved drawing, part, and inspection plan keep production and repeat orders aligned.

Inside YTD’s Foundry

See the people and equipment behind each order. YTD has manufactured custom castings since 2008, with in-house tooling, investment casting, CNC machining, and core inspection in a 10,000+ square meter facility.

Integrated Production Facility

CNC Machining Center

Slurry Coating

Investment Casting Foundry - YTD Foundry

Casting Workshop

Mold Machining

Casted Mold

Steel Mold

Aluminum Mold

CNC Machined Mold

Wax Injection

Slurry Coating

Shell Drying

Dewaxing

Melting & Pouring

Triming

Post Processing

CMM/Hardness/Spectrometer Test

Wax Pattern Check

Wax Pattern Trimming

Request an Exhaust Manifold Quote

Send what you have and tell us what the completed manifold needs to do. We will follow up on the details needed to prepare your quote.

Part Reference

A current drawing or 3D model gives us the clearest start. An existing manifold can also begin a replacement order, with engine or OE information helping us understand the context.

Operating Conditions

Tell us where the manifold fits and the conditions it will see. Include the engine type and any heat, corrosion, cooling, or turbo requirements that affect the design.

Order & Delivery

Your expected quantity and target date help us plan production. Tell us how far YTD should take the manifold before shipment and which acceptance records your team needs.

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Exhaust Manifold FAQs

Practical answers for starting a custom cast exhaust manifold order with YTD.

Can YTD make an exhaust manifold from an existing sample?

Yes. An existing manifold can start the project when the original drawing is unavailable. Engine or OE information provides context, and we will identify the remaining details needed for quotation and tooling.

Do I need to choose the casting process before requesting a quote?

No. Send the manifold and expected quantity. YTD will review the complete part and propose a suitable manufacturing route.

Which materials are available for cast exhaust manifolds?

YTD supplies cast iron, carbon and alloy steel, stainless steel, heat-resistant steel, and high-temperature alloy manifolds. The engine environment and drawing determine the final grade.

Can YTD supply exhaust manifolds fully machined?

Yes. Critical interfaces can be CNC machined before the specified treatment, inspection, and packing are completed.

What inspections can be included with an exhaust manifold order?

The inspection scope follows the drawing and application. It can include material and dimensional records, non-destructive inspection, or leak testing when specified. The method and acceptance criteria are defined before production.