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ARP 901-8150 Billet Aluminum Piston Ring Compressor Tool

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

901-8150
09/17/2036 12:08 AM
Sale Price

$73.22

4 left at this price

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Usually delivered within 2 days

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Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The ARP 901-8150 is a precision-engineered piston ring compressor designed for professional engine builders and serious enthusiasts. CNC-machined from 6061-T6 billet aluminum tube material, this tool features a true radius bore that perfectly matches the cylinder diameter, ensuring smooth piston installation without risk of ring damage.

Key Features:

  • CNC-machined from 6061-T6 billet aluminum for exceptional strength and precision
  • True radius bore design provides superior performance over conventional tapered compressors
  • Relieved bottom edge accommodates wire O-rings without interference
  • Type 3 hard anodized finish for maximum durability and wear resistance
  • Bore size prominently engraved in 3/4-inch high numbers for quick identification
  • Professional-grade tool trusted by engine builders worldwide

Unlike traditional tapered ring compressors that can twist or damage rings during installation, ARP's true radius design ensures even compression around the entire circumference. The relief cut on the bottom edge prevents interference with wire-type O-rings commonly found on modern engine blocks. The durable Type 3 anodizing provides a hard, corrosion-resistant surface that will last through countless engine builds.

Products specifications

Maximum Diameter (mm)

81.5mm

Minimum Diameter (mm)

81.5mm

Piston Ring Compressor Finish

Black anodized

Piston Ring Compressor Material

Aluminum

Quantity

Sold individually.

Size

81.50 mm

N/a

Lowest price and quick checkout

Very pleased with the exceptional service. The replacement rear window gas struts for my '02 Jeep TJ Sahara are extremely high quality and identical to the original ones replaced. Outstanding distributor!

The parts was exactly what I ordered and fast delivery time I will order from them again

There were no measurements of size of what I was looking at they are slightly large but I believe I can make them work I have a retrofit small block Chevy to Toyota Land Cruiser

I got good service but order the wrong thing still waiting for a answer

Very pleased with my purchase and Autoplicity. Got the best price on the internet and received it very quickly. Product arrived just as discribed. I highly recommend Autoplicity for your on-line shopping needs.

Quality site with great prices!

I was pleasantly surprised to received my order the following day.With ground shipping I was hoping to get it in 4 days to 6 days but this is amazing.You guys are great, thank you.

Awsome service and prices,Thanks alot

Great to deal with both online and over the phone. Buy with confidence.

So far so good!

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