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ARP (900-0400) 4.040" Tapered Ring Compressor

4.8 4.8 out of 5 stars 32 ratings
$66.71
FREE Returns
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Purchase options and add-ons

Brand ARP
Included Components Tools
Item Weight 0.25 Kilograms
Color Black
Material Aluminum

About this item

  • ARP Ring Compressor 4.040 in Bore Billet Aluminum Black Anodized P/N ARP900-0400
  • Fit type: Universal
  • Part number: ARP-900-0400
  • Package Weight: 0.55 pounds
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ARP (900-0400) 4.040" Tapered Ring Compressor
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Product Description

ARP's new ring compressors are CNC machined from 6061-T6 billet tube material and feature a true radius for each different bore diameter. What's more, they are relieved for wire O-rings on bottom. Type 3 anodizing is used for long life, and the bore size is prominently engraved in 3/4 high numbers for easy identification. Standard stocking sizes from 3.552 to 4.750 (SAE) and 75mm to 95.5mm (metric). The true radius design is far superior to conventional tapered devices, and widely acclaimed by professional engine builders This is truly the very best piston ring compressor on the market today. Ring Compressor Size 4.040in

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    Details
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    Price$66.71$69.84$62.01$65.99$66.71$69.84
    Delivery
    Get it as soon as Saturday, May 11
    Get it as soon as Saturday, May 11
    Get it as soon as Saturday, May 11
    Get it as soon as Saturday, May 11
    Get it as soon as Saturday, May 11
    Get it as soon as Saturday, May 11
    Customer Ratings
    4.84.8 out of 5 stars32
    5.05.0 out of 5 stars2
    5.05.0 out of 5 stars10
    5.05.0 out of 5 stars2
    4.54.5 out of 5 stars19
    5.05.0 out of 5 stars4
    Sold By
    Amazon.com
    Amazon.com
    Amazon.com
    Amazon.com
    Amazon.com
    Amazon.com
    model name
    900-0400
    900-6250
    900-0600
    900-4400
    900-0000
    900-3900
    weight
    0.25 kilograms
    0.45 pounds
    0.47 pounds
    —
    0.26 kilograms
    —

    Looking for specific info?

    Customer reviews

    4.8 out of 5 stars
    4.8 out of 5
    32 global ratings

    Top reviews from the United States

    James E.
    5.0 out of 5 stars Fantastic tool
    Reviewed in the United States on January 25, 2024
    Verified Purchase
    Fantastic tool
    Helpful
     Report
    Bennett patrick
    5.0 out of 5 stars 4.040 ARP QUALITY U S A
    Reviewed in the United States on February 8, 2023
    Verified Purchase
    ARP QUALITY PART MADE IN THE USA
    Helpful
     Report
    Chris H
    5.0 out of 5 stars Best piston compressor I've ever used
    Reviewed in the United States on January 8, 2020
    Verified Purchase
    I've always used the sleeve type of ring compressor and have had good luck until the sleeve got a little old or I didn't have it solidly even all the way around.
    This tapered ring compressor solved all my worries. It was the easiest and best compressor I've ever used!
    Used a little oil inside the compressor and the rings and piston went into the cylinder block easily and safely every time.
    This thing doesn't look like it will ever wear out so I probably won't ever have to buy another one.
    Definitely worth the money.
    Helpful
     Report
    C & S Euro Shop
    5.0 out of 5 stars Awesome Product by ARP.
    Reviewed in the United States on December 22, 2021
    Verified Purchase
    Did the job on a chevy 350 bored .040 over. Easy to use, just give it a small tap.
    Helpful
     Report
    Johnboy74
    5.0 out of 5 stars Perfect quality
    Reviewed in the United States on January 15, 2021
    Verified Purchase
    This was exactly what it needed to be. Met every expectation
    Helpful
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    Amazon Customer
    5.0 out of 5 stars Five Stars
    Reviewed in the United States on March 16, 2016
    Verified Purchase
    Absolutely would not use anything else to install pistons ! Makes the job effortless.
    One person found this helpful
    Helpful
     Report
    Amazon Customer
    1.0 out of 5 stars Junk
    Reviewed in the United States on May 14, 2018
    Verified Purchase
    Absolute pile of crap, bottom of this tool has a lip that is spose to sit inside the cylinder bore, and it does not. Making this pistion install a pain in the A$$. Never will shy away from a moroso piston installer tool again
    One person found this helpful
    Helpful
     Report