Paccar MX13 Exhaust Manifold | 2013.5-2016 X15 Exhaust You use the edge of

You use the edge of the buffing wheel to polish

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Paccar MX13 Exhaust Manifold | 2013.5-2016 X15 Exhaust You use the edge ofAvailable for: Paccar MX13 Model Year 2013. 5 2016 Key Benefits 20% average airflow increase in key areas Up to 100 degree cooler EGTs Made in the USA Warranty: 3 Year Unlimited Mile Warranty 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