A-Premium Right Exhaust Manifold Kit for Ram V8 5.7/6.4L — Cast Iron, Includes Gasket & Heat Shield

A-Premium's right-side cast iron exhaust manifold kit replaces the factory manifold on compatible Ram V8 5.7L and 6.4L engines and ships complete with inlet gasket, bolts, nuts and a heat shield for direct-fit installation.

If your Ram 1500, 2500 or 3500 with a 5.7L or 6.4L V8 needs a dependable right-side manifold, this A-Premium kit offers a heavy-duty, OEM-style replacement built to match factory dimensions. The manifold comes prepped for direct replacement, includes the required small hardware and a heat shield, and is finished in natural cast iron to withstand high exhaust temperatures and everyday duty.

Will this manifold fit my Ram truck?

This kit is designed for a wide range of Ram trucks and model years with specific V8 engines. Verify your engine designation and model year against the included fitment list before purchasing to ensure compatibility.

• Fits Ram 1500 (2013–2018) with V8 5.7L engines
• Fits Ram 2500/3500 (various years 2013–2021) with V8 5.7L and 6.4L as noted
• Includes cross-reference numbers 674-685, 674685, 5045486AA for parts lookup

How is the A-Premium manifold built and what materials are used?

The manifold is cast from durable iron and manufactured to match OEM geometry for a straightforward replacement. The natural cast-iron construction provides strength and heat tolerance for exhaust service, while the included heat shield helps manage under-hood temperatures.

• Material: cast iron for high-temperature durability
• Includes inlet gasket, 2 bolts and 2 nuts for secure mounting
• Heat shield included to protect surrounding components

What performance or reliability benefits can I expect?

Replacing a cracked or warped manifold restores proper exhaust routing and sealing, reducing the chance of leaks and noise while maintaining correct backpressure for engine operation. Built to OEM dimensions, the unit helps ensure consistent fit and steady performance after installation.

• Direct-replacement design for straightforward installation
• Rigid cast-iron construction reduces risk of cracking under heat stress
• Manufactured to OEM specifications for stable fitment and operation

What comes in the box and how is it packaged?

The kit ships with the right exhaust manifold plus the small parts you need to install it, and it's packed in a reinforced box for safe transport. The packaging and included hardware are intended to streamline the replacement process and minimize additional purchases.

• Package contains 1 manifold, 1 inlet gasket, 2 bolts, 2 nuts and a heat shield
• Shipped in a stronger protective box to prevent shipping damage
• Port shape is irregular to match factory exhaust ports precisely

Who is this for: This A-Premium right-side exhaust manifold kit is aimed at Ram truck owners, DIY mechanics and repair shops replacing a damaged or worn manifold on V8 5.7L or 6.4L engines who want an OEM-style cast-iron replacement with the needed gasket and basic hardware included. Confirm your truck’s year and engine designation against the fitment list before ordering to ensure a correct match.