CAT C15 ACERT CHROME EXHAUST MANIFOLD

If you’re looking to improve airflow and reduce exhaust temperatures on your Caterpillar C15 Acert (2004.5–2010), the PDI Big Boss Exhaust Manifold is designed to deliver stronger performance, quicker turbo response, and long-term durability.

PDI engineered this manifold to maximize exhaust airflow, helping the turbocharger spool faster while lowering exhaust restriction. During the design process, each runner was carefully analyzed and tested to create balanced exhaust flow into the turbo, improving overall engine efficiency.

Compared to a factory manifold, the PDI Big Boss design increases airflow by an average of 20%, while lowering exhaust gas temperatures by 75–100°F. Improved airflow and optimized exhaust pressure-to-boost pressure ratios can help support better fuel efficiency, stronger throttle response, and improved pulling power.

PDI manufactures these manifolds using High Silicon with Molybdenum Ductile Iron (HSMD), a premium material designed to withstand extreme heat cycles. This construction helps eliminate common failures such as warping, cracking, and center divider erosion that can occur with stock manifolds over time. The redesigned mounting surfaces also improve durability and reduce the chances of failures caused by heat fatigue.

Available For

2004.5–2010 Caterpillar C15 Acert Engines

Key Benefits

• 20% increase in airflow over stock manifolds

• 75–100°F cooler exhaust gas temperatures

• Helps reduce turbo lag and improve turbo response

• Supports improved engine performance and potential fuel economy gains

• Made in the USA

Premium Construction

• Built from High Silicon Molybdenum Ductile Iron (HSMD)

• Designed to resist warping, cracking, and heat erosion

• Reinforced mounting surfaces for improved durability

Compliance

CARB EO# D-773-2

Warranty

3 Year Unlimited Mileage Warranty

At Redneck Diesel Performance, we carry parts that help your truck run cooler, pull harder, and stay reliable mile after mile. And if you'd rather have it handled professionally, we can install the manifold for you at our shop as well.