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Perfect Circle S41909 Piston Ring Set 8-Cylinder 4.055" Bore Plasma Moly

Manufacturer

Picture for manufacturer Perfect Circle

Part Number

S41909
6 reviews
Sale Price

$80.08

In Stock (5)

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Usually delivered within 2 days

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Product Details

The Perfect Circle S41909 is a premium OE-quality piston ring set designed for 8-cylinder diesel engines with a 4.055-inch bore. Now manufactured under the MAHLE Original brand, this complete set provides the quality and reliability that Perfect Circle has been known for since 1895.

Key Features:

  • Complete 8-cylinder set with top, second, and oil ring assemblies
  • 4.055-inch standard bore diameter (102.997mm)
  • Ring thicknesses: 3.0mm top, 2.0mm second, 3.0mm oil ring
  • Plasma moly-faced ductile iron top compression ring for long service life
  • Chrome-faced cast iron second ring for enhanced sealing
  • 3-piece stainless steel oil ring assembly with CP-20 design featuring exclusive 20-degree ear angle
  • Pre-lapped rings for immediate seating and virtually eliminated break-in time
  • CNC-controlled gap chamfer to optimize compression and reduce blow-by
  • Standard tension design for reliable performance

Advanced Engineering:

MAHLE Original piston rings feature installer-friendly design that prevents incorrect installation. The compression rings utilize barrel-faced contact areas for efficient compression, while the intermediate ring incorporates reverse twist design for superior groove side sealing. Ring materials, coatings, and tension are all optimized for reduced friction and extended engine life.

Perfect Circle was acquired by MAHLE in 2007 and continues to manufacture high-quality engine components trusted by professional engine builders and OE manufacturers worldwide.

So far, ordering process is going good, easy. After placing my order, which as I previously stated, was easy and a fairly good process, I was worried. After about 2 weeks, my order had not arrived. I had attempted a few times to track my order using the provided information on my order confirmation email. However, my attempts fell short, as the tracking number listed was not the right one. To my dismay, I decided to just wait a couple more days. Then, when no package arrived, I decided to contact customer service. As I am a stay at home parent, with a 4 year old boy and a few nieces and nephews that I also help care for, it was at night that I sent my email. First thing in the morning I had received a reply. I was very pleased with the customer service!!!!! =) I explained my situation. The customer service representative responded that they would investigate as to what had happened and to retrieve the proper tracking information. Within a few hours, I received another email, with the right information!!! All in all, there were problems with the local FedEx delivery man...not with Autoplicity!! I had an extremely good experience I should say! Thank you very much for that!

Fast easy ordering awaiting delivery

Processing was extremely fast and convenient through Amazon

Fairly simple parts order. It arrived quickly and was well packaged.

Great Products, Very Cheap, Fast Shipping. Will be a returning Customer. A+++

Very good product, the green caliper paint is great.

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