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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.
Genuine Replacement: This exhaust manifold nut is a replacement for OEM number #A1201420072. It fully conforms to original factory dimensions and specifications, is precision-made to ensure a tight fit with the exhaust system after installation, and is...
Premium Metal: Our exhaust flange nuts are made of high-strength copper-plated alloy, which is durable and has excellent corrosion resistance and high-temperature resistance. It is high in hardness and not easily deformed; it maintains a stable structure...
Effective Sealing: The copper plating and precise threads of the hexagonal nuts ensure a tight fit with the exhaust manifold, guaranteeing a tight seal in the exhaust system, preventing exhaust gas leaks and noise generation, improving exhaust efficiency...
Easy Installation The exhaust manifold nut kit is designed to conform to the standard M8×1.25 thread specification, and the hexagonal interface allows for quick installation or removal using a common wrench or socket. Plug and play, simple to operate, no...
Product Specifications: Each pack contains 10 M8×1.25 hexagonal exhaust manifold nuts. These nuts are suitable for various automotive and truck exhaust systems, are standard size, easy to install, and are compact, lightweight, and easy to store and carry
【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...
【Two Pack】 Our car bolt contains a total of springs*2, screw*2, nut*2, washer*2, this kit comes with complete accessories, when you receive our car bolt, you can easily complete the installation. Whether you are replacing your old system parts or...
Compatible Fitment - Manufacturer Part Number:N811313S431, W707747S431, W701706-S2
Premium Quality - Exhaust manifold studs and nuts kit is made of high standard 304 stainless steel,heat-treated for enhancing its stable performance and durability.Wear resistance, anti-rust and corruption resistance.
Suitable Size - Compatible With Ford 4.6 5.4 exhaust manifold studs thread Size: is M8*50,thread pitch 1.25.All parts are engineered and tested to meet or exceed original standards and performance.
Easy Install and Replacement - All Exhaust manifold studs compatible with Ford 1996-2017, compatible with Lincoln 1998-2014, compatible with Mercury 2001-2011 on 4.6 / 5.4/ 6.8 engines,great for install replacement.
Package Included - Including 16 pcs stainless steel aftermarket studs and serrated flange nuts kit. If you just want one manifolds (8pcs) exhaust stud kit please find B0752BTW6J
Upgraded hardware - this set of six M10-1.5 exhaust manifold mounting studs and nuts are 100 percent stainless steel for superior heat and corrosion resistance
Convenient solution - kit contains all the application-specific hardware necessary to join one exhaust manifold to one manifold flange
Matches fit - this hardware matches the fit and function of the factory fasteners, while offering superior durability
Trustworthy quality - backed by team of product experts in the United States and more than a century of automotive experience
Ensure fit - to make sure this part fits your exact vehicle, input your make, model and trim level into the garage tool
Last update on 2026-07-19 / 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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