Used OEM Exhaust Manifolds for Trucks & HGVs

Used truck Exhaust Manifolds

Exhaust Manifolds are heavy-duty engine components that collect exhaust gases from the cylinder head and route them into the turbocharger, exhaust pipework and emissions system. On a modern lorry or HGV, the manifold is not just a simple cast outlet. It has to cope with high exhaust gas temperatures, thermal expansion, vibration, turbo loading, EGR routing and the demands of Euro emissions equipment. A cracked, warped or incorrect manifold can cause exhaust leaks, loss of boost, excessive noise, fumes, poor engine performance and difficult fault-finding around the turbo and emissions system.

VRA Truckparts lists used OEM Exhaust Manifolds and related exhaust connection pieces removed from dismantled commercial vehicles. Current examples in this category include genuine MAN TGX and MAN TGS Euro 6 exhaust manifold parts with references such as OE 51081023379, visible casting number 51.08102-3379 and alternative reference 51081020645, as well as a MAN TGM/TGX exhaust EGR elbow connector with OEM number 51081513087 and reference 1061496. Stock changes as donor trucks are dismantled, so the exact Exhaust Manifolds and related elbows available will vary. Always read the individual listing, compare the part numbers and check the photographs before ordering.

What you will find in the Exhaust Manifolds category

This category is for used genuine truck Exhaust Manifolds and closely related cast exhaust connection components within the exhaust and emissions system. Availability depends on the vehicles currently being broken, but listings may include complete manifold castings, EGR elbow connectors, turbo-side exhaust outlets and manifold fittings shown in the product photos.

• Complete used OEM Exhaust Manifolds for HGV engines, including MAN TGX and TGS applications when available.
• Cast iron manifold sections with visible casting numbers, OE references and mounting faces shown in the listing photos.
• Euro 6 exhaust manifold parts used around turbocharger, EGR and aftertreatment layouts on modern commercial vehicles.
• Exhaust EGR elbow connectors such as MAN part number 51081513087 where listed as a related manifold connection piece.
• Manifold gaskets, studs or fittings only where they are included and pictured with the used item.
• Parts identified by OEM references such as 51081023379, 51.08102-3379, 51081020645, 1061496 and other numbers visible on the component.
• Donor vehicle details where available, helping workshops match by model range, engine type and emission standard.

Truck brands & typical applications

The currently shown examples are MAN truck parts, particularly for MAN TGX, MAN TGS and MAN TGM Euro 6 vehicles. These applications can vary by engine code, chassis configuration, turbocharger arrangement and emissions equipment, so a MAN badge alone is not enough to confirm fitment. Exhaust Manifolds for other European truck brands may appear in this category as stock changes, but buyers should treat every listing as part-number specific rather than model-name specific.

• MAN TGX exhaust manifold components, including Euro 6 applications with OE number 51081023379 where matched.
• MAN TGS Exhaust Manifolds and related turbo or exhaust outlet castings depending on donor vehicle specification.
• MAN TGM exhaust and EGR connector elbows where the same style of emissions routing is used.
• Euro 6 commercial vehicles where manifold and EGR layouts are often more complex than older exhaust systems.
• Other HGV applications may be listed in future depending on incoming dismantled trucks and available OEM references.

Why Exhaust Manifolds matters

The exhaust manifold sits at one of the hottest and most stressed points on the engine. It must seal correctly against the cylinder head, carry exhaust gas evenly into the turbocharger or outlet section, and maintain pressure for correct turbo response. On a Euro 6 truck, poor sealing or incorrect routing can also affect EGR flow, temperature readings, emissions performance and fault codes. Even a small crack can create a ticking noise, soot marks, smell in the cab area, loss of boost pressure or repeated gasket failure.

Correctly matched used OEM Exhaust Manifolds are often preferred by workshops because the casting, mounting points, ports, bolt pattern and pipe connections match the original engine design. Aftermarket or incorrect pattern parts can create alignment problems with the turbo, EGR pipework, heat shields, brackets and downpipe assemblies. For fleet operators, fitting the right manifold first time helps reduce workshop delay and keeps the vehicle closer to its original specification.

Typical reasons to replace Exhaust Manifolds

Exhaust Manifolds are built to handle heat, but high mileage, thermal cycling and vibration can still cause failure. A used genuine OEM replacement may be a practical option when the original part is damaged, cracked or missing from an engine rebuild.

• Cracks in the manifold casting causing exhaust leaks, noise, soot marks or fumes.
• Warped sealing faces leading to repeated gasket failure or poor cylinder head sealing.
• Broken studs, damaged threads or corroded mounting points preventing secure installation.
• Heat-related fatigue around turbo mounting areas, EGR take-offs or connector elbows.
• Impact damage from engine removal, accident repair or previous dismantling work.
• Blocked, heavily carboned or damaged EGR connection sections affecting exhaust gas routing.
• Incorrect manifold already fitted, causing poor alignment with turbocharger, pipework or brackets.

How to choose the correct Exhaust Manifolds

Choosing used Exhaust Manifolds for an HGV is mainly about exact identification. Manifold castings can look similar across model ranges, but small differences in port shape, bolt pattern, EGR outlet, turbo flange position or Euro standard can make them unsuitable. Before ordering, compare the old part against the listing in detail.

• Check the truck make, model and generation, such as MAN TGX, TGS or TGM where relevant.
• Confirm the engine type, engine code and whether the vehicle is Euro 5, Euro 6 or another emission standard.
• Match the OEM number, casting number and any alternative references shown on the part.
• Compare turbo mounting flange, EGR connection, outlet angle and pipework layout.
• Look carefully at bolt holes, studs, gasket faces and bracket mounting points.
• Check whether the listing is for a complete manifold, a section, or a related EGR elbow connector.
• Study the photos for included fittings, surface rust, soot marks and visible condition.
• Use donor vehicle information, registration, VIN or chassis details where available to support the match.

If you are unsure which Exhaust Manifolds fit your vehicle, use our guide on how to find the right truck part and our page on compatibility and VIN checks. Sending the OEM number, casting reference, registration or VIN and clear photos of your existing part can help avoid ordering the wrong manifold. Compatibility is not guaranteed by model name alone, especially on Euro 6 trucks with different emissions and turbocharger layouts.

Used OEM parts from dismantled trucks

VRA Truckparts supplies used genuine OEM truck parts removed from donor vehicles. Exhaust Manifolds and related exhaust components are photographed so buyers can assess the casting, ports, flanges, mounting points, part numbers and included items. Where references are available, they are added to the listing title or description to help workshops search by OE number, casting number or alternative manufacturer reference.

Used exhaust parts will normally show signs of service such as surface rust, heat staining, soot deposits and external discoloration. These marks are typical for cast iron manifold components and exhaust elbows, but each listing should be checked individually for condition notes and photos. More information about how parts are removed, handled and prepared for resale can be found on our dismantling and quality process.

Related exhaust and emissions checks

When replacing Exhaust Manifolds, it is sensible to inspect the surrounding exhaust and emissions parts at the same time. A leaking manifold may have affected gaskets, turbocharger hardware, EGR connectors, heat shields or exhaust pipe alignment. Similarly, a failed EGR elbow or connector can be mistaken for a manifold fault if the leak is hidden behind heat shields or pipework.

Before fitting a replacement manifold, check the mating face on the cylinder head, the condition of the manifold gasket, the turbo flange, studs, nuts and any supporting brackets. If the vehicle has stored fault codes relating to boost pressure, exhaust gas recirculation, temperature sensors or aftertreatment efficiency, investigate the full system rather than assuming the manifold is the only fault.

Delivery, payment & returns

Each Exhaust Manifolds listing contains the available photos, part references and condition information for that specific used item. Please review these details carefully before ordering, especially where several MAN references or Euro 6 variants look similar. For practical buying information, see delivery and shipping, payment and VAT information and warranty and part condition. If a return is needed, the process is explained on returns and refunds.