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ARP 201-4302 Head Stud Kit for BMW M3 2.5L M50 3.0L S50 3.2L S52

Manufacturer

ARP

<h3>The Gold Standard in Performance Fasteners</h3> <p>When racing enthusiast Gary Holzapfel recognized that fastener failure was causing many engine breakdowns in 1968, he founded Automotive Racing Products (ARP) to solve a critical problem in motorsports. Drawing on his aerospace fastener manufacturing experience, Holzapfel created a company that would revolutionize the performance fastener industry. Today, ARP stands as the world's premier manufacturer of high-strength bolts, studs, nuts, and specialized hardware for racing and high-performance applications.</p> <p>ARP controls all aspects of the manufacturing process in-house, with all operations closely monitored, enabling the company to maintain its reputation for zero-defect quality. Every fastener undergoes forging, heat treatment, thread rolling, and precision finishing at ARP's Southern California facilities, which span over 115,000 square feet. This vertically integrated approach ensures that each component meets exacting standards for strength, fatigue resistance, and reliability under extreme conditions.</p> <h3>Engineered for Championship Performance</h3> <p>ARP's customer roster reads like a who's who of professional motorsports. The product line ranges from quality high-performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, NASCAR and NHRA drag racing and marine applications. The company's fasteners have secured victories in virtually every major racing championship worldwide, from Top Fuel dragsters to Formula One cars, proving their worth under the most demanding conditions imaginable.</p> <p>The brand's <a href="/48-arp-engine-cylinder-head-bolt-set-10306">engine cylinder head bolt sets</a> represent the cornerstone of ARP's catalog, offering engine builders the clamping force and reliability needed to prevent head gasket failure in high-boost and high-compression applications. These precision-engineered fasteners utilize proprietary materials and heat treatments that deliver up to ten times the fatigue strength of conventional bolts, making them essential for any serious performance build.</p> <p>For engine internals, ARP manufactures <a href="/48-arp-engine-connecting-rod-5276">connecting rods</a> designed to withstand extreme cylinder pressures and high RPM loads. Each rod is manufactured to aerospace standards with tight tolerances and superior material properties. Whether you're building a street performance engine or a full competition powerplant, ARP connecting rods provide the strength and consistency that professional engine builders demand.</p> <h3>Complete Fastener Solutions</h3> <p>Beyond engine components, ARP's product range extends throughout the entire vehicle. The company's <a href="/48-arp-wheel-lug-stud-7680">wheel lug studs</a> offer critical safety and performance benefits for racing and high-performance street applications, providing greater clamping force and durability than factory studs. ARP's product line contains thousands of part numbers and has expanded to include virtually every fastener found in an engine and driveline.</p> <p>Individual <a href="/48-arp-engine-cylinder-head-bolt-5308">engine cylinder head bolts</a> are also available for custom applications or specific replacement needs, manufactured to the same exacting standards as complete sets. This flexibility allows builders to source exactly what they need for specialized builds or repairs without compromising on quality.</p> <p>What sets ARP apart is not just the breadth of their catalog, but their willingness to develop custom solutions for unique applications. The company maintains complete R&D capabilities, including metallurgical research, product design, prototype machining, and extensive laboratory testing. This engineering expertise ensures that whether you're installing a simple head stud kit or building a record-setting race engine, ARP fasteners deliver the reliability and performance that professionals trust.</p>

Part Number

201-4302
05/31/2036 7:59 PM
Sale Price

$209.97

In Stock (10+)

delivery box

Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The ARP 201-4302 head stud kit is engineered specifically for BMW M3 engines with 2.5L (M50), 3.0L (S50US), and 3.2L (S52US) configurations. This precision-manufactured head stud set provides superior cylinder head-to-block clamping force, making it essential for high-compression builds and applications using turbochargers, superchargers, or nitrous oxide systems.

Premium Materials and Manufacturing:

  • Constructed from premium grade 8740 chromoly steel alloy, rated far superior to standard aircraft-quality materials
  • Heat-treated to 200,000 psi tensile strength for maximum durability and reliability
  • Centerless ground through approximately ten precision cuts to ensure near-perfect concentricity and straightness
  • Thread rolled after heat treatment for approximately 1000% better fatigue strength compared to pre-heat-treat threading

Engineering Advantages:

  • Precision tolerances allow gaskets and cylinder heads to align perfectly during installation
  • Specially undercut shorter studs equalize stretch between all studs for consistent clamping force
  • Compensates for head gasket compression to prevent blown gaskets and ensure optimal sealing
  • Superior to thread-rolled bar stock studs that are machined before heat treatment

ARP head studs are the choice of leading Sport Compact and Import racers who demand maximum reliability from their high-performance BMW engines. The meticulous manufacturing process and premium materials ensure your engine's head gasket sealing remains intact even under extreme boost pressures and high compression ratios.

Products specifications

Cut to Fit

No

Fastener Finish

Black oxide

Fastener Material

ARP 2000

Fastener Style

Stud

Head Style

12-point

Quantity

Sold as a kit.

Washers Included

Yes

payment via Paypal

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When ordering the product, it would be nice to be given an expected date of arrival. I received an email stating that they were using 3rd party to send out my product so they wouldn't have any information until after the 3rd party had processed my order.

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I bought this item for my fiance and he loves it! He was completely happy with the price we paid...

Best prices I found online.. processed same day and recieved same week..packaged great and works great.

Wow I love the race ramps I bought for my 2009 dodge challenger srt8 I used Thelm to change the oil 2 days after I got Thelm and they worked great I have extra clearance I wouldnt think of any other place for my parts gas shipping great prices and great shipping prices I'm a very happy customer

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