aFe 46-40154 BladeRunner Ported Exhaust Manifolds for 2019-2024 RAM 1500 V8-5.7L

Vehicle Fitment

• 2019-2024 RAM 1500 (DT Platform, All Trims), V8-5.7L HEMI, RWD/4WD

Fitment Notes

• This manifold set is designed for the 5th Generation RAM 1500 DT platform only. It does not fit the RAM 1500 Classic (DS platform, 2019-2024).
• Manifolds bolt directly to the factory y-pipe for a straightforward installation with no cutting or modification required.
• Inlet and outlet ports are machined to match factory gasket openings - OEM gaskets can be reused or replaced with new OEM-spec units.

Features

• Outflows the factory exhaust manifolds by 15%, delivering improved exhaust scavenging, throttle response, and overall engine performance.
• Inlet and outlet ports are precision-machined to match factory gasket openings, maximizing exhaust flow without compromising sealing integrity.
• 25% thicker walls compared to the factory manifolds provide superior rigidity and dramatically improved resistance to cracking and warping under heat cycling.
• Cast ductile iron construction offers excellent high-temperature strength and durability, outlasting the crack-prone OEM cast iron manifolds.
• Direct bolt-on to the factory y-pipe - no cutting, welding, or modification required for installation.
• All manifold mounting hardware is included, enabling a complete installation without sourcing additional fasteners.
• Sold as a complete set (driver side and passenger side) for a full exhaust manifold upgrade in a single purchase.
• Compatible with stock and mildly modified 5.7L HEMI engines, making them ideal for both OEM replacement and performance upgrades.
• Improved exhaust flow reduces back-pressure and increases exhaust gas velocity, supporting better combustion efficiency and throttle response.

Specifications

• Part Number: 46-40154
• Product Line: BladeRunner
• Material: Cast Ductile Iron
• Wall Thickness: 25% thicker than OEM
• Exhaust Flow Improvement: +15% over factory manifolds
• Port Matching: Inlet and outlet ports machined to factory gasket dimensions
• Y-Pipe Compatibility: Bolts directly to factory y-pipe (no modification required)
• Position: Driver Side and Passenger Side (complete pair)
• Hardware Included: Yes (manifold mounting hardware)
• Engine: V8-5.7L HEMI
• Platform: RAM 1500 DT (5th Generation, 2019-2024)

Included Components

• 1x Driver Side BladeRunner Ported Ductile Iron Exhaust Manifold
• 1x Passenger Side BladeRunner Ported Ductile Iron Exhaust Manifold
• 1x Manifold Mounting Hardware Kit

Product Description

The aFe POWER 46-40154 BladeRunner Ported Ductile Iron Exhaust Manifolds are a direct bolt-on performance upgrade engineered specifically for the 2019-2024 RAM 1500 DT equipped with the 5.7L HEMI V8. These manifolds address one of the most commonly reported weaknesses of the factory exhaust system - the thin-walled, crack-prone OEM manifolds that restrict flow and degrade over time under the thermal stress of the HEMI's heat cycles. By replacing both manifolds with a stronger, higher-flowing ductile iron design, this upgrade delivers measurable gains in exhaust scavenging efficiency and throttle response right out of the box.

The key engineering improvements are immediately apparent. Both the inlet and outlet ports are precision-machined to match the exact dimensions of the factory gaskets, eliminating any flow restriction at the port face while maintaining a leak-free seal. The manifold walls are 25% thicker than the OEM units, dramatically increasing rigidity and resistance to cracking - a particularly important advantage for truck owners who regularly tow or haul under load. The overall exhaust flow improvement of 15% over factory reduces back-pressure throughout the system, allowing the 5.7L HEMI to expel exhaust gases more efficiently with each cycle.

Installation is designed to be straightforward for experienced DIY mechanics and professional shops alike. The manifolds bolt directly to the factory y-pipe using all factory mounting locations, and the included hardware kit contains everything needed to complete the swap. No cutting, welding, or custom fabrication is required. These manifolds are ideal for RAM 1500 owners looking for a durable, long-term OEM replacement that also delivers a genuine performance benefit - whether the truck is running a stock tune or has additional intake and exhaust upgrades in place.