New Loaded Cylinder Head for Detroit DD15 Engine

If you’re looking for a new loaded cylinder head for a Detroit DD15 engine, this complete assembly is built to deliver OEM-level performance, durability, and reliability. It is brand new (not remanufactured) and comes fully assembled, making it ready for installation with minimal downtime.

This Detroit DD15 cylinder head is precision-machined and pressure-tested to ensure proper sealing, efficient combustion, and long service life in high-load diesel applications. It is designed for DD15 engines commonly found in Freightliner Cascadia and other on-highway trucks.

What Comes With This DD15 Cylinder Head?

This is a loaded cylinder head, meaning it comes pre-assembled with:

• Intake and exhaust valves installed

• Valve springs, retainers, and seals

• OEM-spec castings and valve geometry

• Machined sealing surfaces for head gasket reliability

This reduces installation time and eliminates the need to transfer old components from a damaged head.

OEM Cross Reference Numbers

This DD15 cylinder head directly replaces the following part numbers:

• A4730101420

• A4730101620

• A4730102620

• A4730103120

• A4730103520

• A4730105020

• EA4730105020

• RA4730102620

If your engine currently uses any of these numbers, this cylinder head is a direct-fit replacement.

Why Replace a Detroit DD15 Cylinder Head?

A failing or cracked cylinder head can cause coolant loss, low compression, white smoke, and repeated head gasket failures. Replacing it with a new loaded DD15 cylinder head restores:

• Proper compression and combustion

• Correct coolant and oil separation

• Reliable valve operation under high EGTs

• Long-term engine durability

This is especially important for high-mileage trucks and engines exposed to heavy loads or overheating.

Applications

• Detroit DD15 diesel engines

• Freightliner Cascadia and other DD15-equipped trucks

• On-highway and vocational heavy-duty use

• EGR-equipped DD15 engine configurations