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When replacing or upgrading your vehicle's exhaust system, the right fasteners are crucial for a secure and leak-free seal. Exhaust studs and nuts are small but vital components that experience extreme heat and vibration. Selecting high-quality, durable parts ensures longevity and prevents common exhaust leaks that can affect performance and emissions.
Fits N/A of vehicles in image gallery fitment chart
Exceptional Quality and Performance: This OE replacement exhaust manifold stud and nut is designed to meet, if not exceed, the performance and quality standards of the original equipment installed on your vehicle. Experience the same high-level...
Direct Replacement, No Fuss: This OE replacement exhaust manifold stud and nut is meticulously designed for your specific vehicle's make and model, promising a direct fit. Installation is as straightforward as it gets - no fuss, no complications...
Ideal replacement - the manifold bolt and spring match the fit and function of the original equipment hardware, including bolt diameter, thread pitch and head type
Complete installation - this kit includes hardware required for securely attaching the manifold to the exhaust system
Trustworthy construction - the kit's bolt and spring are made of hardened steel for durable, long-lasting service life
Quality tested - kit components have undergone extensive testing to ensure proper function and long service life
Specialized Design: Automotive hexagonal nuts are specifically engineered for securing connections in automotive manifolds, piping systems, muffler interfaces, and flanges. They deliver reliable clamping force under the sustained extreme temperatures and...
Precision Dimensions: Hex nuts are manufactured strictly to the M8×1.25 thread standard with precise dimensions (hex width 0.5 inches, height 0.25 inches, inner diameter 0.34 inches). Please verify the thread specifications of your vehicle's original...
Hexagonal Design: The hexagonal nut features a standard hexagonal shape for easy tightening with open-end wrenches or sockets. The flange design at the nut's base increases the contact area with the connecting component, facilitating more even...
10 Pieces: Each package contains 10 premium hexagonal nuts (OEM reference part number A1201420072). This ample quantity not only suffices for a complete manifold or pipe repair but also provides spares for future maintenance or replacement of lost nuts
【Note】Please check the size of the product before purchasing! Compatible with Toyota (some models); Compatible with Nissan (some models); Compatible with Honda (some models).
【Shock Absorbing Spring】 This car bolt is different from similar products in the market, we also specially equipped with springs, the springs can absorb some of the vibration, reduce the impact of vibration on the fixed parts, prolong the life of the...
【Fixed Exhaust Gasket】 Car bolts are one of the key components to keep the exhaust system working properly, when being tightened, it will exert enough pressure on the gasket to enable the gasket to form an effective seal to keep a tight contact...
【High Temperature Resistant Steel】 Since the working environment of the system is very rough, including high temperature and vibration, our car bolts are produced by manganese steel and 45 gauge steel which are high temperature resistant materials...
【Bolt Size】 The overall length of the car bolt is 2.9 inch, the diameter of the studs is 9.7 mm, the pitch of the threads is 1.5 mm, the length of the threads is 1.35 inch, and the length of the studs is 2.55 inch, you can refer to these data before...
【Function】The Exhaust Manifold Bolt Set is Made of High-Quality Materials,Which is Sturdy,Durable,and Has a Long Service Life. This Kit Includes 8 × Hex Flange Lock Nut (6505316AA),4 × Stud (6505257AA),4 × Stud (6504331),8 × Hex Screw (6504340).
【Replaces#】6505257AA, 6504331, 6504340, 6508219AA, 6508220AA, 6507746AA, 6505316AA.Please Check the OEM Part Number and Make Sure Your Part Number Matches this Part Number Before Buying!
【Compatible】Fit for Dodge Vehicles:2000-2007 Dakota; 2000-2009 Durango; 2002-2008 Ram 1500.Fit for Jeep Vehicles:2006-2009 Commander; 1999-2009 Grand Cherokee.Fit for 2007-2009 Chrysler Aspen.Fit for 2006-2007 Mitsubishi Raider.
【Premium Quality】Tested & Certified to Meet or Exceed OEM Quality Standards.All Products are 100% Tested Before Leaving the Factory.Made of High Quality Material.
Last update on 2026-10-19 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Automotive Replacement Exhaust Studs & Nuts
Understanding Exhaust Fastener Materials
Stainless Steel: Offers excellent corrosion resistance and can withstand high temperatures. It's a popular choice for its durability and longevity, especially in humid or coastal environments.
Steel Alloys: Often treated or coated for enhanced strength and heat resistance. These can be a more budget-friendly option while still providing good performance for most applications.
Titanium: The premium choice, offering superior strength-to-weight ratio and exceptional heat resistance. While more expensive, it's ideal for high-performance or racing applications where weight and extreme conditions are factors.
Key Features to Consider
Thread Pitch and Size: Ensure the studs and nuts match the existing manifold and pipe threads precisely. Incorrect sizing will prevent proper installation and sealing.
Corrosion Resistance: Look for coatings or materials that resist rust and corrosion, especially if your vehicle is exposed to road salt or moisture.
Heat Tolerance: Exhaust components operate under extreme heat. Choose fasteners rated for the temperatures your exhaust system will reach to prevent failure.
Strength and Durability: Select fasteners made from robust materials that can withstand the constant vibration and stress of an automotive exhaust system.
Installation Tips
Always clean the mating surfaces of the exhaust manifold and pipe thoroughly before installation.
Use anti-seize compound on the threads of the studs and nuts to prevent seizing due to heat and corrosion.
Tighten nuts gradually and evenly in a star pattern to ensure a uniform seal and prevent warping of the manifold or pipe.
Torque specifications, if available, should be followed to prevent over-tightening or under-tightening.
Frequently Asked Questions
What is the difference between exhaust studs and bolts?
Exhaust studs are threaded rods that screw into the manifold or head, with nuts then tightened onto the exposed threads. Bolts have a head and are threaded all the way down, being tightened directly against the surface.
Why do exhaust studs and nuts fail?
Failure is often due to extreme heat cycles causing material fatigue, corrosion from moisture and road salt, and constant vibration leading to loosening or breakage.
Do I need special nuts for exhaust studs?
Yes, exhaust nuts are typically designed to withstand higher temperatures and vibrations than standard hardware. Flange nuts or locking nuts are often recommended for a secure fit.
How often should exhaust studs and nuts be replaced?
Replacement is usually necessary when performing other exhaust work, if leaks are detected, or if the existing fasteners show signs of rust, damage, or stretching.
Can I reuse old exhaust studs and nuts?
It's generally not recommended to reuse old fasteners. Heat cycles can weaken them, and corrosion can make them difficult to remove or reuse effectively, potentially leading to leaks.
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