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MAHLE 4070ML-043 Piston Ring Set Bore File Fit - 4.065

Part of: MAHLE Piston Ring Set Bore File Fit

Other options in this family: MAHLE 4005MS-15 MAHLE 4035MS-15 MAHLE 4065MS MAHLE 3910MS-15 MAHLE 4505MS

Manufacturer

Picture for manufacturer MAHLE

Part Number

4070ML-043
9 reviews
Sale Price

$155.87

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The MAHLE 4070ML-043 is a premium piston ring set designed for high-performance engine builds requiring a 4.065" bore diameter with +.005" oversize capability. This file-fit ring set is engineered for professional engine builders who demand precise ring end gap control for optimal compression sealing and oil control.

Key Specifications:

  • Bore Size: 4.065" (+.005" oversize tolerance)
  • Top Ring Thickness: .043"
  • Second Ring Thickness: .043"
  • Oil Ring: 3.0mm (3-piece design)
  • File-Fit Design: Requires manual end gap filing for precise fitment

MAHLE piston rings feature advanced materials and coatings for superior wear resistance, reduced friction, and improved heat dissipation. The file-fit design allows engine builders to custom-fit ring end gaps to exact specifications for the intended application, whether street performance, racing, or high-boost forced induction. Each ring is manufactured to strict tolerances ensuring consistent quality and performance.

Application: This ring set is suitable for small block V8 engines and other applications requiring this specific bore size. Professional installation and proper ring gap filing is required.

Products specifications

Bore (in)

4.065 in.

Bore (mm)

103.251mm

File Fit

Yes

Gapless

No

Oil Ring Included

Yes

Oil Ring Material

Stainless steel

Oil Ring Tension

Low

Oil Ring Thickness

3.0mm

Quantity

Sold as a set.

Second Ring Facing Material

Cast iron

Second Ring Included

Yes

Second Ring Material

Cast iron

Second Ring Thickness

0.043 in.

Top Ring Facing Material

Plasma-moly

Top Ring Included

Yes

Top Ring Material

Ductile iron

Top Ring Thickness

0.043 in.

Prop 65

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

I had a great experience shopping at autoplicity

Best prices, fast ship. Ordered Friday night, shipped Monday morning (i don't work weekends either) well done. Will definately look for more from your site. Thank you!

Great price found for my product. excellent customer service and my item was in stock.

This is our second order from Autoplicity. The first one didn't go so well due to a mix up with the Sparco seat pricing. Though I was starting to question our decision to order from them after several emails and phone calls and online chats, they came through in the end. These guys earned our second order by honoring the price they had listed and then calling to follow up when our race seat was shipped. Since this group was able turn our bad experience into a positive one we made our second order and, so far, it looks like they are again getting us what we want at the best price we can find. We are happy to recommend Autoplicty and plan on using them for future orders. There is one specific thing we would recommend, change the quality and volume of the hold music on the 800 #. It sounded like we were calling a 1970's van with a blown Jensen stereo turned all the way up,...

Shipped very quickly and had the best price I could find!

Great prices on most things. Ordered on a sunday and they processed and shipped the order the next day.

first order fast shipping and great fit

The whole process was some and quick. They also had the lowest prices available. Will be using them more often for sure!!

This was my first order with Autoplicity and I am very happy. They had the lowest price on-line that I found. Communication was great and shipping was very fast. I ordered late on Thursday and it was at my house the following Tuesday, and I didn't pay for rush shipping. I got exactly what I expected. Will do business with these guys again.

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