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ARP 2442902 Pro Series Flexplate Bolt Kit for GM LS Engines with Adapter Plate

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

2442902
07/13/2036 12:06 PM
Sale Price

$25.53

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Usually delivered within 2 days

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Fitment guaranteed

Fitment guaranteed

Product Details

The ARP 244-2902 Pro Series Flexplate Bolt Kit provides superior strength and reliability for GM LS Series engine flexplate installations when using a crankshaft spacer adapter plate. These premium bolts are engineered specifically for Gen III/IV LS engines paired with early GM transmissions including TH350, TH400, 700R4, and 4L80E conversions that require an adapter plate.

Key Features:

  • Forged from 8740 chromoly steel aerospace alloy with 200,000 PSI tensile strength
  • Heat-treated prior to precision thread rolling for maximum fatigue resistance
  • Exclusive flat 12-point head design for positive engagement
  • Centerless ground bearing surface ensures perpendicular thread alignment and equal load distribution
  • Larger-than-stock underhead radius for increased strength
  • Black oxide finish for corrosion resistance
  • 11mm x 1.5 thread size with 1.075 inch under-head length

What's Included:

  • Six (6) Pro Series flexplate bolts
  • 1/2 oz. pack of ARP Ultra-Torque fastener assembly lubricant

This kit is designed to replace GM Performance part number 19257940 and should be used with GM Performance crankshaft spacer kit 12021399. Torque specification is 85 ft-lbs using supplied lubricant. Note: Do not use washers with these bolts—they are engineered to be installed without washers.

As described

No issues print delivery

Fast and great service

Product was great quality and fit perfect on my 2005 Ford f150.

Nice and fast, clear and easy to read if this is the part I want, and if it will fit my car or NOT.

Great price

very good

Great

I ordered from Autoplicity because they had the Rancho shocks I wanted cheaper then anyone else I could find. They even beat all of the prices from my local stores. Great communication as they sent emails at every stage of the order and shipping process. I will be ordering from them again when I get to my next project.

easy site to navigate

Web site easily navigated

easy shopping

Simple and fast

So far so good

Great prices. Easy website. EXCELLENT customer service

This is a great place to get automotive accessories because their prices can't be beat. My packages did come in three different shipments even though I only received one tracking number, but I'm sure I could have got the others if I called. Overall great experience. Thanks.

I found great prices and they shipped immediately. Best deal online.

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