PDI Big Boss CAT C13 Acert Exhaust Manifold

Available for: 2004.5 - 2010 Caterpillar C13 Acert Engines  CAT manifold CARB EO# D773-2 Key Benefits 20% increase in airflow over stock 75-100 degree cooling of EGTs Made in the USA Warranty: 2 Year Unlimited Mile Warranty ** Our CAT C13 Acert Big Boss Exhaust Manifold replaces CAT OEM Part Number 250-4409 We have designed our exhaust manifolds to maximize the exhaust air flow to reduce turbo lag time and cool exhaust temperatures. In the design of the manifold each port is analyzed and tested to provide a balanced flow to the turbocharger. Big Boss Exhaust Manifolds produce, on average, a 20% air flow increase over a stock manifold, cooling exhaust temperatures by 75-100 degrees. PDI manifolds are a big part in maintaining the best exhaust pressure to boost pressure ratios which will provide potential for increased fuel economy. At PDI, we use only the best material for our products. We use a superior grade of High Silicon with Molybdenum Ductile Iron (HSMD) that eliminates weak po