Description
Product Overview
The Perfect Circle MAHLE 40141CP.030 piston ring is engineered for high‑performance engines. Featuring a machined exterior, the ring provides a tight seal and exact fit on the cylinder wall, minimizing blow‑by and maintaining compression. Weighing just 1.2 pounds, its lightweight design reduces reciprocating mass, which helps lower friction and improve overall engine response. Manufactured by Perfect Circle and branded by MAHLE, this component meets OEM specifications and is built to endure the rigors of both street and track use.
Usage
Designed for a wide range of gasoline and diesel engines, this piston ring is suitable for rebuilds, upgrades, and routine maintenance. Whether you are restoring a classic vehicle, enhancing a performance build, or simply replacing a worn ring, the 40141CP.030 delivers consistent sealing and durability. It fits engines that require the specific model number, ensuring compatibility without the need for custom modifications. 
Why Choose Us
Choosing the Perfect Circle MAHLE piston ring means trusting a legacy of precision engineering and quality control. Each ring undergoes rigorous testing for dimensional accuracy, material integrity, and heat resistance. The partnership between Perfect Circle and MAHLE combines decades of expertise in automotive components, guaranteeing a product that meets strict performance standards. Our commitment to authentic parts ensures you receive a component that matches the original equipment specifications, providing peace of mind and long‑term reliability.
Key Features
- Machined exterior for exact cylinder fit and superior sealing
- Lightweight construction reduces friction and improves engine response
- Durable material composition resists wear and heat deformation
- OEM‑compatible model 40141CP.030 for seamless installation
- Backed by Perfect Circle and MAHLE quality assurance programs
FAQ
Is this piston ring compatible with my engine?
Yes, the 40141CP.030 is designed to match the OEM specifications for engines that list this part number. Verify your engine’s service manual to confirm compatibility.
What material is the ring made from?
The ring is crafted from high‑strength steel alloy with a machined surface finish, providing excellent wear resistance and heat tolerance.
Can I install this ring myself?
Installation requires standard piston ring tools and basic mechanical knowledge. If you are unfamiliar with engine assembly, professional installation is recommended.
How does the machined exterior improve performance?
The precise machining ensures a tighter seal, reducing blow‑by and maintaining optimal compression, which translates to smoother power delivery and better fuel efficiency.
What warranty does this product have?
Perfect Circle and MAHLE offer a limited warranty against manufacturing defects, typically covering a period of one year from the date of purchase.




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