48 of 54 Items
48 of 54 Items
When your exhaust manifold fails, your truck loses power and uptime. In a commercial diesel engine, the manifold collects exhaust gases from each cylinder and routes them to the turbocharger. It operates under extreme heat and constant vibration. Cracks, leaks, or warped surfaces can quickly turn into lost revenue.
At Fitzgerald Truck Parts, we stock diesel exhaust manifolds built specifically for heavy truck applications from top brands including Caterpillar, Cummins, Detroit Diesel, and Paccar – names trusted by working fleets and owner-operator trucks across the country.
Our inventory includes direct replacements, OEM-fit options, and upgraded castings built for durability. Fitment depends on engine model, emissions configuration, and mounting style, so we make it easy to filter by application.
Our semi truck exhaust manifolds are built for real work and real miles. If you're looking for exhaust manifolds for sale that meet commercial standards, this is the right place.
Every engine platform requires the correct casting and configuration. Turbo location, bolt pattern, and emissions systems all affect which manifold fits your truck.
We carry options for Caterpillar engines such as C13 and C15, Cummins platforms including ISX and N14, Detroit Diesel Series 60 models, and Paccar applications. You will find EGR and non-EGR versions, as well as high mount, low mount, and center section designs.
Use our filters and product descriptions to match your engine series and setup. Choosing the right heavy duty exhaust manifold starts with accurate engine information, and our catalog is organized to help you get it right the first time.
If your truck runs hard and logs serious miles, upgrading may be worth considering. A coated exhaust manifold is designed to better handle heat and reduce the risk of cracking in demanding conditions.
For fleets that have dealt with repeated failures or high-mileage wear, coated and premium options can offer added durability. We offer both standard and upgraded diesel exhaust manifolds so you can choose what fits your application and budget.
When replacing a manifold, do not overlook hardware. An exhaust manifold gasket kit helps seal the connection between the manifold and cylinder head. Reusing worn gaskets or stretched studs can lead to leaks and repeat repairs.
An exhaust manifold install kit may include bolts, studs, and related hardware specific to certain engine platforms. Engine-specific kits are available for Caterpillar, Cummins, and Detroit Diesel applications. Replacing hardware during installation helps reduce the risk of future failures and keeps your semi truck engine exhaust parts performing as intended.
Start by confirming your engine model, series, and emissions configuration. Verify whether you need an EGR or non-EGR design and check the mounting style. Then, review part numbers and compatibility notes carefully.
If you are replacing a failed unit on a high-mileage truck, a coated or premium option may offer longer service life. For standard repairs, a direct-fit replacement will get you back on the road quickly.
We supply truck parts that meet the demands of heavy-duty diesel applications. Browse our selection above, filter by your engine, and order the right part today to keep your truck moving and earning.