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MAHLE 3021210B Performance Piston Ring Set Bore Napier Steel - 4.000

Manufacturer

Picture for manufacturer MAHLE

Part Number

3021210B
10 reviews
Sale Price

$5.61

Estimated ship date Saturday, November 21

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Product Details

The MAHLE 3021210B is a high-performance piston ring set engineered for precision engine building applications requiring a 4.000-inch bore diameter. This bulk plain ring set features advanced Napier-style steel construction on the second ring for enhanced oil control and durability in demanding performance environments.

Key Specifications:

  • Bore Size: 4.000 inches
  • Ring Width: 1.0mm
  • Radial Wall Thickness: 0.136 inches
  • Performance Napier steel second ring design
  • Bulk plain ring configuration

MAHLE piston rings are manufactured to OE specifications and deliver superior sealing, reduced friction, and excellent wear characteristics. The Napier-style second ring provides optimized oil control while maintaining consistent cylinder wall contact. This ring set is ideal for performance rebuilds, racing applications, and high-output engine builds where precision fitment and reliability are critical.

Simple, good selection, nice Amazon link feature

It was awesome

it was ok

Clean concise

So far so good.

Wow!! I came across Autoplicity while searching for a fuel pump for my Trans-Am. Not only did they have the cheapest price for the part, but they also had extremely reasonable shipping cost. Most websites claim to have free shipping but it seemed the cost of shipping was added to the cost of their part. Then I find out my order was processed and shipped within one business day!! I'll definately be bookmarking Autoplicity's home page!! Thanks!!

man what a great price could'nt resiste

Wow that was fast. I ordered a Pertronix Ignitor conversion kit. Not only were they by far the lowest price I could find, they shipped within hours of submitting the order. I got the shipment in less than 24 hrs, even though I ordered ground shipping. I was a little bummed that they did not offer free shipping, as I am used to with other online places, but with their fast turnaround, I am not begrudging it. Sure it might have been because they have a warehouse nearby, but it was still unexpectedly impressive. The part arrived and looks like it all there and should be good to go. <br><br>I can't vouch for their customer service, but so far I am pleasantly surprised.

Best price I have found yet.

Best price on the net! Haven't got my order yet, it just shipped so we will see from there.

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