Exhaust Manifolds - quality and affordable price page 1 of 4

Heavy-Duty Diesel Engine Exhaust Manifolds & Components

Exhaust manifolds are essential components in diesel engines, responsible for collecting exhaust gases from multiple cylinders and directing them into the turbocharger or exhaust pipe. Our catalog offers a wide selection of exhaust manifold assemblies, turbo manifold housings, multi-piece exhaust sections, EGR-equipped manifolds, manifold gaskets, exhaust elbows, and related hardware for popular engines including Cummins ISX15, ISL, ISB, QSB, QSC; Detroit Diesel DD13, DD15, Series 60; Paccar MX13; Volvo D13; Mercedes OM460LA; Caterpillar C13/C15; International/Navistar and many other commercial diesel platforms.

Why exhaust manifolds are critical to engine efficiency

A properly functioning diesel engine exhaust manifold ensures that exhaust gases flow efficiently to the turbocharger, helping maintain boost pressure, reducing backpressure, and preventing heat damage. Cracked or warped manifolds can cause exhaust leaks, increased EGTs (exhaust gas temperatures), lost turbo efficiency, reduced power, soot buildup, and excessive fuel consumption. These problems are especially dangerous for heavy-duty trucks, off-road equipment, agricultural machines, and high-load industrial engines operating under continuous stress.

When choosing a replacement exhaust manifold, consider:

• correct engine compatibility and OEM part number
• whether your engine uses a single-piece or multi-section manifold
• presence of EGR ports, temperature sensor ports, or integrated heat shielding
• material type (cast iron, high-alloy cast steel) and resistance to thermal fatigue

Engineered for durability, optimal flow, and long service life

Our manifolds are built to withstand extreme temperatures, thermal cycles, vibration, and constant high-pressure exhaust flow. Many assemblies feature reinforced runners, precision-machined mounting surfaces, corrosion-resistant alloys, and optimized internal passages for enhanced airflow. Whether you are replacing a Cummins ISX15 multi-piece manifold, installing a Detroit Diesel DD15 EGR manifold, upgrading a Volvo D13 turbo manifold section, or restoring a Caterpillar C13 exhaust elbow, every component is engineered to provide stable performance and extend the operational lifespan of downstream components.