Mopar Performance Exhaust Nut

Mopar Performance Exhaust Nuts: OEM Precision Where It Counts

When it comes to securing the exhaust system on a Chrysler, Dodge, Jeep, or Ram vehicle, few details matter more than the hardware holding it all together. Mopar Performance brings the same engineering standards it applies to complete exhaust systems down to the smallest components — including the exhaust nuts that keep manifolds, flanges, and heat shields locked in place under extreme heat and vibration.

Why Exhaust Nuts Matter

An exhaust nut may seem like a minor part, but it bears significant responsibility. Exhaust nuts anchor manifolds to cylinder heads, secure Y-pipe flange connections, and fasten heat shields — all in an environment of intense thermal cycling and constant engine vibration. A fastener that doesn't meet OEM tolerances can back out over time, leading to exhaust leaks, lost power, and costly repairs. That's why using the correct, manufacturer-specified hardware is so important.

What Sets Mopar Performance Exhaust Nuts Apart

Genuine OEM fitment. Mopar Performance exhaust nuts are manufactured to meet exact specifications for fit, form, and function on the specific vehicles they're designed for. Unlike generic aftermarket fasteners, these nuts are engineered to the same tolerances as the original parts that came on your vehicle from the factory.

The Mopar Performance lineup in this category includes several distinct fastener types tailored to different exhaust connection points:

• Exhaust Manifold Nuts — such as part 6506546AA, featuring Unified National Coarse (UNC) threading and a black finish, designed for a precise, rattle-free fit at the manifold-to-head connection.
• Hex Flange Nuts — including M8x1.25 hex flange nuts (e.g., 6510726AA) used at exhaust manifold-to-cylinder-head and EGR tube-to-manifold junctions, with specific fitment for 6.4L V8 HEMI engines.
• U-Nuts (Mounting Nuts) — self-retaining clip-style fasteners like 6036684AA, designed to secure exhaust manifold corners and gasket interfaces on 5.7L and 6.4L V8 HEMI platforms. These snap into panel mounting holes without special tools, making installation and service straightforward.
• Spring Nuts — such as 68057855AA, used in exhaust pipe and flange assemblies where controlled clamping tension is critical.

Material and durability. Mopar Performance fasteners are cut from premium materials and finished to resist the corrosion, shock, and vibration that are inherent to the exhaust environment. Because exhaust hardware lives through constant heat expansion and contraction, material quality is not a place to cut corners.

Broad vehicle coverage. The Mopar Performance exhaust nut assortment covers a wide range of Stellantis platforms — from Ram 1500 and Dodge Durango SRT to Jeep Grand Cherokee and Chrysler passenger cars — ensuring you can find the right fastener for your specific application.

The Mopar Performance Difference

Mopar's name is a combination of "motor" and "parts," and the brand has been synonymous with Chrysler-family performance since 1937. Today, under Stellantis, the Mopar division manufactures over 500,000 parts across more than 150 markets worldwide. That scale means rigorous quality control and access to the exact specifications used on the original factory assembly line — a standard that extends even to individual exhaust fasteners.

Whether you're doing a full exhaust manifold swap, replacing heat shield hardware, or tracking down a single stripped nut after a repair, Mopar Performance exhaust nuts from our exhaust nut category give you the assurance of factory-correct hardware built to last.