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ARP 251-2802 Pro Series Flywheel Bolt Kit

Manufacturer

ARP

<h3>About ARP – Automotive Racing Products</h3><p>Few names carry as much weight in the performance fastener world as <strong>ARP</strong> — short for Automotive Racing Products. Back in 1968, racing enthusiast Gary Holzapfel noticed that many of his friends' broken engines were caused by fastener failure, and at the time no commercially available studs or bolts were up to the challenge — so he drew on his years of experience as a leading aerospace subcontractor and founded ARP. That problem-solving spirit has driven the company ever since.</p><p>From a backyard garage workshop, ARP has grown into a highly diversified manufacturer with 18 buildings across Southern California, totaling more than 275,000 square feet of forging, heat-treating, machining, quality control, finishing, and packaging facilities in Santa Paula and Ventura, California.</p><h3>Engineering That Goes Beyond &quot;Aerospace Quality&quot;</h3><p>ARP uses only top-quality materials — far above the usual &quot;aerospace quality&quot; others settle for — in a highly exacting manufacturing process to create fasteners with the strength and durability to last race after race. Fastener materials are available in 8740 Chrome Moly, ARP2000, and Custom Age 625+, each engineered for specific performance thresholds. In order to ensure optimum quality control, ARP controls all aspects of the manufacturing process entirely in-house — a discipline that has allowed it to build a reputation for &quot;zero defects&quot; quality throughout the industry.</p><p>Automotive Racing Products has achieved ISO 9001:2008 and AS9100 registration, certifications the company has maintained as a testament to its unwavering dedication to producing the highest quality fasteners available. ARP also operates an Aerospace Division and is one of the very few companies in the world fully licensed by the United States Government to manufacture MS-21250 fatigue-rated fasteners.</p><h3>Trusted by the World&apos;s Top Racing Programs</h3><p>ARP enjoys working relationships with professional engine builders and race teams across Formula 1, IndyCar, IMSA, NASCAR, NHRA, IHRA, Lucas Oil Late Model Dirt, and World of Outlaws — constant interaction that keeps ARP on the cutting edge of fastener technology. Whether you&apos;re building a weekend bracket racer or a full-time professional race engine, ARP has a solution engineered to hold things together under the most extreme conditions.</p><h3>ARP&apos;s Engine Fastener Lineup</h3><p>Today, ARP&apos;s product line contains thousands of part numbers and has expanded to include virtually every fastener found in an engine and driveline and throughout the suspension and frame. Among the most popular are <a href="/48-arp-engine-cylinder-head-bolt-set-10306">Engine Cylinder Head Bolt Sets</a>, <a href="/48-arp-engine-connecting-rod-bolt-5280">Engine Connecting Rod Bolts</a>, and complete <a href="/48-arp-engine-connecting-rod-5276">Engine Connecting Rods</a> — three categories that represent the critical fastening points where engine integrity is made or lost. ARP&apos;s High Performance series head bolt kits are rated at 170,000 psi — 15 percent stronger than Grade 8 fasteners — and are available with hex heads or reduced-wrenching 12-point heads that eliminate the need for valvetrain removal when re-torquing.</p><p>ARP stands behind its products indefinitely with respect to materials and workmanship, making every fastener a long-term investment in engine reliability rather than a consumable component.</p>

Part Number

251-2802
09/12/2036 6:06 AM
Sale Price

$40.57

In Stock (9)

delivery box

Usually delivered within 2 days

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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 251-2802 Pro Series Flywheel Bolt Kit delivers professional-grade fastening performance for demanding race and street applications. Originally developed for NASCAR Winston Cup competition, these premium flywheel bolts are engineered to exceed OEM hardware in both strength and reliability.

Key Features:

  • Pro Series design with 200,000 psi tensile strength rating
  • Forged from aerospace-grade alloy for maximum durability
  • Heat-treated prior to thread rolling and precision machining
  • Exclusive flat 12-point head design for positive engagement
  • Larger than stock shank diameter for increased clamping force
  • Improved flywheel register fit for better alignment
  • Complete kit includes washers and hardware where applicable

ARP's Pro Series flywheel bolts provide critical safety and performance advantages over factory hardware. The aerospace alloy construction and advanced heat treatment process ensure consistent torque retention and resistance to loosening under extreme racing conditions. The 12-point head design allows for precise torque application and easier installation in tight spaces.

Products specifications

Fastener Finish

Black oxide

Fastener Material

Chromemoly

Head Style

12-point

Quantity

Sold as a set of 6.

Rear Main Seal Style

1-piece

Thread

M12 x 1.0

Thread Size

12mm x 1.00 RH

UHL

0.985

Underhead Length (in)

0.990 in.

Washer Included

Yes

It was just fine.

It was better service than I expected A receive my things quickly and is better not thought Thanks very much

Easy to order!!

Great price. Fast shipping

Easy order and fast delivery.

Great experience with autoplicity. Fast shipping. Ordered on 5/31 got bed cover on 6/2. Fit truck perfect.

First time user and was great and ease

Amazing. Ordered Thursday night and received item Saturday morning! Just as described.

Great seller, great price and item was in stop. Shipped out products within 2 days with tracking number. Will buy again!

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