Duramax Balancing Big Bore Exhaust Manifold. Makes it easy for your engine to exhale.
Driver`s side full bore exhaust manifold for the Duramax balances your engine power, reduces cylinder load, reduces exhaust temperature, exhaust backpressure and improves fuel economy.
The stock manifold:
• Only flows 80% of the passenger side manifold
• 3 cylinders only operate at 80% capacity & load others down
• No access to measure exhaust temperature
The BD manfilold:
• Flow matches the passenger side manifold and balances the engines exhaust pressure.
• Maintains consistent exhaust pressure and temperature on both sides of the engine. Contains Exhaust temperature probe port.
BD uses a high silicon Ductile iron that prevents cracking from heat expansion and vibrations. Manifold gaskets required.