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ARP 231-4701 Head Stud Kit for GM 2.2L Ecotec L61

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

231-4701
07/11/2036 2:54 AM
Sale Price

$169.15

In Stock (5)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The ARP 231-4701 head stud kit is engineered for 1995-2005 Chevrolet Cavalier and other GM vehicles equipped with the 2.2L Ecotec L61 engine. These precision-manufactured studs provide superior cylinder head-to-block sealing, making them essential for high-compression builds and engines running forced induction or nitrous oxide.

Premium Materials and Manufacturing:

  • Constructed from premium grade 8740 chromoly alloy steel, far superior to standard aircraft-quality fasteners
  • Heat-treated to 200,000 psi tensile strength for maximum clamping force and reliability
  • Centerless ground through ten precision passes to ensure near-perfect concentricity and straightness
  • Thread rolled after heat-treat for approximately 1000% better fatigue strength compared to pre-heat-treat threading
  • Specially undercut shorter studs equalize stretch between upper and lower fasteners for consistent clamping force

Performance Benefits:

  • Superior head gasket sealing prevents blown gaskets under extreme cylinder pressures
  • Precision tolerances allow cylinder heads and gaskets to align perfectly during installation
  • Consistent clamping force compensates for head gasket compression
  • Ideal for turbocharged, supercharged, and nitrous-equipped engines
  • Direct replacement for OEM head bolts with significantly improved strength

ARP head studs are the preferred choice of professional Sport Compact racers who demand reliable head gasket sealing under extreme operating conditions. The precision manufacturing process ensures proper alignment and even torque distribution across all fasteners.

Products specifications

Cut to Fit

No

Fastener Finish

Black oxide

Fastener Material

8740 chromemoly

Fastener Style

Stud

Head Style

12-point

Notes

Ecotec 2.2

Quantity

Sold as a kit.

Washers Included

Yes

Product was as described, well priced and delivered as expected.

Very simple and easy.

Item is correct

Easy and enjoyable

Great

Correct item, fast shipping, would do it again, five stars!

Thanks

Good fast shipping. Easy ordering.

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It was good.

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