901-8500 ARP Tapered Ring Compressor

Review ARP 85mm Tapered Ring Compressor

The ARP 901-8500 85mm Tapered Ring Compressor is a high-performance, precision engine component designed for automotive and racing applications. This compressor is part of ARP's extensive line of engine fasteners and is engineered to provide superior clamping force and durability.

The ARP 901-8500 compressor features an 85mm outside diameter and a tapered design that allows for easy installation and adjustment. Its 12-point, 90-degree design offers increased clamping force and even distribution of load across the fastener, reducing the risk of failure and ensuring optimal engine performance.

This compressor is made of premium materials, including forged 4130 chromoly steel rings and ARP's proprietary thread form, the ARP2000. The ARP2000 thread form provides superior strength and resistance to galling and seizing, ensuring a secure and reliable connection between engine components.

The ARP 901-8500 compressor also includes ARP's exclusive J-bolt design, which provides an additional clamping force and eliminates the need for additional hardware. The J-bolt design also allows for easy access to engine components, making it an ideal choice for hard-to-reach areas.

The ARP 901-8500 85mm Tapered Ring Compressor is designed to meet or exceed OEM specifications and is backed by ARP's industry-leading warranty. It is suitable for use in high-performance, race, and competition applications and is recommended for engines that require maximum clamping force and durability.

In summary, the ARP 901-8500 85mm Tapered Ring Compressor is a high-quality, precision engine component designed for superior clamping force and durability. Its tapered design, 12-point, 90-degree configuration, and ARP2000 thread form provide increased strength and load distribution, ensuring optimal engine performance and reliability. The J-bolt design offers additional clamping force and easy access to engine components, making it an ideal choice for hard-to-reach areas in high-performance and racing applications.

ARP 901-8500 is a tapered ring compressor designed for use in high-performance applications. This compressor is known for its precision engineering and durability. Here are some pros and cons of buying this ARP compressor:

1. High-quality construction: ARP compressors are known for their superior quality and durability. The 901-8500 model is no exception, as it is made from high-strength materials and precision-machined to ensure a perfect fit.

2. Improved performance: This compressor is designed to provide improved clamping force and better sealing than OEM compressors. This can lead to increased engine performance and increased power output.

3. Wide applicability: The ARP 901-8500 is suitable for a wide range of applications, including racing, high-performance street vehicles, and marine engines. It can be used in both gasoline and diesel engines.

4. Easy installation: The tapered design of this compressor makes it easier to install than traditional compressors. It also eliminates the need for shims, which can save time and effort during installation.

1. Cost: The ARP 901-8500 is a premium compressor, and it comes with a premium price tag. It may be more expensive than OEM or aftermarket compressors.

2. May not be necessary for all applications: While this compressor offers improved performance and durability, it may not be necessary for all applications. If you are not planning on pushing your engine to the limit, an OEM or aftermarket compressor may be sufficient.

3. May require additional parts: Depending on the specific application, you may need additional parts to complete the installation of this compressor. For example, you may need new bolts or gaskets to ensure a proper seal.

The ARP 901-8500 is a high-quality tapered ring compressor that offers improved performance and durability compared to OEM and aftermarket compressors. However, it comes with a premium price tag and may not be necessary for all applications. If you are planning on pushing your engine to the limit and want the best possible performance, this compressor is a worthwhile investment. If you are on a budget or do not need the extra performance, an OEM or aftermarket compressor may be sufficient.

If you are in the market for a high-performance tapered ring compressor and are willing to pay the premium price, the ARP 901-8500 is an excellent choice. Its precision engineering, durability, and easy installation make it a top pick for racers and high-performance enthusiasts. However, if you are on a budget or do not need the extra performance, consider an OEM or aftermarket compressor to save some money.

Details:

Piston ring compressor - 85.00mm bore tapered aluminum black anodized each.

specifications compressorshow:

• brand: Arp
• mpn: 901-8500
• part type: Ring Compressor
• upc: 672036029128

returns compressorshow:

• policy: no returns

general compressorshow:

• category: Business & Industrial > Hydraulics, Pneumatics, Pumps Plumbing > Blowers > Air Compressors

payments compressorshow:

• credit card: visa
• other
• wallet: google-pay

seller compressorshow:

• city: charlestown, massachusetts
• # reviews: 84
• rating: 100.0%

shipping compressorshow:

• class: economy
• service: usps media mail
• transit: 8-14 days
• carrier: usps
• type: fixed

offer compressorshow:

• availability: in stock
• options: ship-to-home
• prices: $64.94–$86.09
• item condition: New
• in stock #: 5
• sold #: 19
• started: may 28, 2025