If you’re looking to upgrade the exhaust side of your Paccar MX13 (2010–2013), the PDI Big Boss Chrome Exhaust Manifold delivers improved airflow, lower exhaust temperatures, and serious durability.
This performance exhaust manifold is engineered to maximize exhaust flow and reduce turbo lag. Each port in the manifold is carefully designed and tested to maintain balanced airflow into the turbocharger, allowing the turbo to spool more efficiently while reducing exhaust restriction.
Compared to a factory manifold, the PDI Big Boss design increases airflow by an average of 20%, helping lower exhaust gas temperatures by 75–100°F under load. Better airflow and improved pressure ratios can also help support improved fuel efficiency and stronger overall engine performance.
PDI manufactures these manifolds using High Silicon with Molybdenum Ductile Iron (HSMD), a premium material designed to withstand extreme heat cycles. This material helps eliminate common manifold failures such as warping, cracking, and center divider erosion that can occur with standard cast manifolds.
The mounting surfaces have also been redesigned to improve durability and prevent failures caused by heat fatigue.
Available For
Paccar MX13 — Model Years 2010–2013
Key Benefits
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20% average airflow increase over stock manifolds
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Up to 100°F cooler exhaust gas temperatures
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Helps reduce turbo lag
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Supports improved boost efficiency and potential fuel economy gains
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Made in the USA
Premium Construction
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Built from High Silicon Molybdenum Ductile Iron (HSMD)
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Designed to resist warping, cracking, and heat erosion
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Redesigned mounting surfaces for improved durability
Warranty
3 Year Unlimited Mileage Warranty
⚠️ ON SALE – Limited Availability
Parts on sale are final and will not be restocked once sold out.
At Redneck Diesel Performance, we carry performance parts that help your truck run cooler, pull harder, and stay reliable on the road.
For more information or help with your build, call us at 972-921-4316.
