My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

MAHLE 3021194B Steel Napier Piston Ring Set Bore - THM-13 4.625

Manufacturer

Picture for manufacturer MAHLE

Part Number

3021194B
11 reviews
Sale Price

$11.72

Estimated ship date Saturday, November 21

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The MAHLE 3021194B is a precision-engineered steel piston ring set designed for demanding industrial and marine engine applications. This premium ring set features MAHLE's Napier THM-13 configuration, optimized for superior sealing performance and extended service life in high-performance engines.

Technical Specifications:

  • Bore Size: 4.625 inches
  • Ring Width: 1.0mm
  • Ring Depth: .136 inches (rectangular wire profile)
  • Material: High-grade steel construction
  • Profile: Plain ring design
  • Configuration: Napier THM-13 compression ring style

MAHLE ring sets are manufactured to exacting OEM tolerances using advanced metallurgy and precision machining. The steel construction provides excellent wear resistance and thermal stability, while the plain profile ensures reliable sealing across the piston stroke. The Napier THM-13 design is specifically engineered for applications requiring enhanced oil control and reduced blowby in heavy-duty engines.

Each ring set is quality-tested to ensure proper fit, dimension accuracy, and performance characteristics. This ring set is ideal for engine rebuilds, overhauls, and performance applications where dependable sealing and durability are critical.

Great price

Smooth

quick and easy

Easy to place my order and find the right parts that fit my vehicle.

price and discount always welcome to me!

Thanks for ease of purchase.

Easy search with part number.

Good parts selection!!

Searching for parts and ordering was quick and easy. All parts were in stock.

Ordered a couple of items. The first was a air intake kit. I had put in all my info for my truck and chose one from the list to order. Won't fit. Called to tell them and they asked if I had called manufacturer...ummm no. Said I needed to contact them to verify wrong part. They were closed, so went to website. The part they sent me was a universal fit- for cars, not trucks, but did find right model- $90 more. Called back autoplicity and was told I need to go through email to get an RA# to return wrong part- site says I can call. Been on hold for over 20 mins and still waiting. Hope the Nerf bars I ordered fit! Update- they called me back, got my RA#. Very pleased with how Nick handled things- it was what I expected the first time. He verified the NERF bars will fit and will be changing the website so the universal intake does not show on list for vehicles with larger air outlets. Changing my rating to show my satisfaction with how it was eventually handled.

Very good website. Easy to use. found the parts i needed and the order process was very easy since i could just login using my amazon account. Very convenient. Received my parts in a week.

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy