See all Engine products
Product thumb
Weistec M157 Head Studs Mercedes-Benz CL550|E550|GL450|GL550|GLE550|ML550|S550|S63 AMG|SL550|SL63 AMG 2011-2020
$1769.00

Weistec & ARP: A Perfect Partnership

Weistec has teamed up with ARP, the leading name in performance engine hardware, to bring you an exceptional product that enhances your engine's reliability and performance. Our head studs replace the factory head bolts, providing a stronger and more dependable connection between the cylinder heads and the engine block.

The Importance of Head Studs

The connection between the cylinder heads and the block is a vital part of your engine. Coolant and oil flow between these components, and it’s crucial to keep them separated. This is where the head gasket comes into play, ensuring that coolant, oil, and air charge stay where they belong, thanks to the pressure generated by the head bolts. Unlike the factory head bolts, which are “torque to yield” and stretch permanently when installed, our head studs offer a different solution.

Why Choose Weistec's ARP 625+ Head Studs?

With an impressive tensile strength of over 260,000 PSI, Weistec's ARP 625+ head studs hold the heads down with significantly greater pressure than factory bolts, without the risk of permanent stretching. This means you can expect a more reliable performance from your engine. Quality head studs are essential for any engine aiming to reach high power levels consistently.

Key Features

  • 260,000 PSI tensile strength
  • 255,000 PSI yield strength
  • Complete replacement for factory head bolts
  • Improved connection between head and block, preventing leaks
  • Reusable design, unlike factory bolts which are one-time use
  • Compatible with Engine: M157

Fitment

These head studs are designed to fit a variety of Mercedes-Benz models:

  • Mercedes-Benz W216 CL550 (2011-2014)
  • Mercedes-Benz W212 E550 (2012-2013)
  • Mercedes-Benz X166 GL450 (2013-2014)
  • Mercedes-Benz X166 GL550 (2013-2015)
  • Mercedes-Benz W166 GLE550 (2016-2020)
  • Mercedes-Benz C292 GLE550 Coupe (2016-2020)
  • Mercedes-Benz W166 ML550 (2012-2015)
  • Mercedes-Benz W221 S550 (2011-2017)
  • Mercedes-Benz C217 S550 Coupe (2014-2017)
  • Mercedes-Benz W221 S63 AMG (2012-2017)
  • Mercedes-Benz C217 S63 AMG (2014-2017)
  • Mercedes-Benz R231 SL550 (2013-2020)
  • Mercedes-Benz R231 SL63 AMG (2012-2020)
Proposition 65

WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Weistec Logo

What Is Weistec Engineering?

Based out of Orange County, California, Weistec Engineering is an industry leader in research, development, and design. While the company was only established in late 2010, founder Michael Weiss and his partner Steve Atneyel both have an impressive track record of working with some of the fastest and most powerful vehicles in the world. The duo were both engineers for major American OEM and aftermarket performance companies; Michael was involved with advanced engineering, while Steve specialized in computer calibration.

Michael Weiss and Steve Atneyel decided to branch out on their own and combine their expertise and experience. The pair were, and still remain, avid Mercedes enthusiast and realized that there was a huge gap in the market for a company dedicated to engineering state-of-the-art performance systems for cars powered by motors like the M156 and M159 AMG. Since its inception over a decade ago, Weistec has grown to provide customers with the highest level of satisfaction and value through unyielding tests and continuous improvements in Mercedes products and performance. 

What Does Weistec Offer?

Engineering and design are the two core services of Weistec Engineering. The Weistec team offers an array of services and capabilities thanks to the team’s combined experience from multiple fields. Whether you have a new idea or are looking to improve an existing design, Weistec can bring your concept to reality while protecting your vehicle’s design form and engineering function. Services include CAD, CAM, rapid prototyping, CNC machining, laser cutting and etching, casting, plastic injection molding, 3D laser scanning, and much more.

Weistec Engineering also offers a comprehensive line of products to the import and exotic market, covering vehicles such as Mercedes-Benz, Audi, Pagani, Alfa Romeo, BMW, McLaren, Ford, Aston Martin, and Maserati. No matter what type of upgrade you are looking for, Weistec has something for everyone when it comes to performance products, suspension parts, electrical components, interior/exterior accessories, and wheels/tires.

Weistec Engineering keeps nearly every aspect of its production process in house to guarantee only the highest quality. From conceptual 3D designs to in-house manufacturing and, ultimately, road and track testing, Weistec boasts relentless attention to detail on everything it offers. Specializing in computer-aided design and vehicle calibration, Weistec has the ability to manufacture quality products that are capable of withstanding even the most rigorous testing conditions. From OEM vehicle manufacturers to the aftermarket performance enthusiast, Weistec aims to deliver innovative solutions that address a wide range of client needs and desires. 

Find Weistec Parts at Vivid Racing

Vivid Racing carries an extensive lineup of Weistec products to suit all your needs and preferences. Our inventory is virtually endless with everything you could possibly need to upgrade your vehicle in terms of performance, power, handling, suspension, aesthetics, and accessories. If you cannot find what you are looking for above or need help choosing a product for your needs, please give us a call at (480) 966-3040. We will advise you on the possible options and walk you through the entire purchase process to ensure a hassle-free experience.

Weistec Limited Warranty

1. Warranty on Weistec Turbocharger Systems, Supercharger Systems, Exhaust Systems and Engine Accessories

12 month Weistec Limited Warranty. Valid 12 months from sales date with valid registration.The following exclusions apply to all Weistec Limited Warranties.

Weistec's limited warranties do not cover any of the following damages or items:
  • Damages to and/or failure of any non-Weistec component or equipment on a vehicle including, but not limited to, the engine, electrical system, transmission and differentials.
  • Damage caused by "Acts of God", normal wear and tear, or damage to a vehicle or engine caused by, tuning by others, collision and/or engine failure.
  • Any costs incurred for towing or downtime of the vehicle.
  • Any rental vehicle costs
  • Any labor costs to diagnose problems or to remove or replace the Weistec products; or any damage caused by the use of another company's product.
  • Any shipping costs.
You're seeing this because you're logged into an employee account or you're accessing the site through an internal IP address. This information is not normally visible.
Things
Sale price None
Wholesale price $1,669.94
Shipping Weight: 6.25
Length: ?
Width: ?
Height: ?
Product Added At Friday 08 November, 2019
Product Modified At Monday 16 December, 2024
Imported By ETLOverride
Last Edited By Rob@vividracing.com
View In Admin

Emissions Info
Carb Approved No
Carb Number -
Epa Status -
Prop65 -
Carb Required -
Vendors
Some placeholder content for the collapse component. This panel is hidden by default but revealed when the user activates the relevant trigger.
Vendor Inv Cost Retail Jobber MAP Core Updated
Weistec Engineering $1,415.20 $1,769.00 ? ? ? 2024-12-16 17:13:26


Check out these other great products