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Engine piston rings are critical components for maintaining optimal engine performance and longevity. Selecting the correct replacement rings ensures proper sealing, oil control, and efficient combustion. Investing in high-quality piston rings can prevent costly engine damage and improve fuel economy.
Highest quality OE replacement piston ring set available - MAHLE replacement ring sets are designed with OE form, fit, and function
MAHLE piston rings with SAE 9254 high alloy steel base material combine to make the ultimate piston ring base material: higher tensile and yield strength, extended fatigue resistance, and increased material hardness
MAHLE second rings provide superior oil control, improved combustion gas management, top ring stability, and sealing providing the best possible oil control and least amount of power loss
MAHLE CP-20 oil rings provide superior oil control in all applications utilizing the exclusive 20 degree ear angle for the best possible side seal in the piston oil ring groove and simplifies installation
MAHLE continues to lead the industry with SAE 9254 high alloy steel napier second rings providing high quality grey iron/ductile iron BT and RBT second rings
COMPATIBILITY – Fits 2003-2006 Cadillac Escalade ESV; 2002-2006 Cadillac Escalade EXT; 2006-2007 Cadillac CTS; 1999-2000 Cadillac Escalade; 2002-2006 Cadillac Escalade; 2005-2006 Chevrolet SSR; 2007-2007 Chevrolet Silverado 2500 HD Classic...
GET THE RIGHT PART -- Before purchasing, please check the “Amazon Confirmed Fit” bar to ensure this part will fit your vehicle; enter all vehicle information (year, make, model, engine and trim) for compatibility and check qualifier notes. If the...
Face of top rings coated with latest generation Plasma-Moly
Complete Plasma Moly Ring Set – Includes a full set of Hastings 2M4860 piston rings for (8) pistons – designed for stock bore 4.000” 6.0L GM LS engines.
Ideal for High-Performance or OEM Rebuilds – Great for naturally aspirated and mild forced induction builds, offering OEM-level sealing with upgraded durability.
Top Ring: Plasma Moly Coated – Provides excellent wear resistance and superior heat control, making it ideal for street performance and long-term reliability.
Second Ring: Reverse-Twist Cast Iron – Designed for optimal oil scraping and blow-by reduction, improving ring seal efficiency during break-in and high-RPM use.
Fits 1999–2006 GM LQ4 and LQ9 6.0L LS Engines – Direct-fit for factory 6.0L iron block applications found in Silverado, Sierra, Suburban, Escalade, and HD platforms.
Premium OEM-Quality Piston Rings – Set of Hastings Standard Size Moly Replacement rings for 1999-2015 Chevy LC9, LS4 4.8 5.3L Ring set is complete set for one engine.
Fitment for the following engines: 4.8L 1999-2015 VINs A,C,V,O,7,4 5.3L 1999-2013 LC9, LS4 VINs 0,3,4,B,C,J,L,M,P,T,Z
3.779" 96mm Bore- 1.5mm 1.5mm 3.0mm ring configuration. Standard Bore Size Compatibility – Specifically designed for stock bore LS pistons, providing a precise fit without the need for additional machining.
The Hastings 2M4978 engine piston ring is made of the following materials: 1st oil ring: Steel rail and stainless expansion 2nd ring: Grey iron Top ring: Steel
Designed for LS Applications – Engineered for 5.3L and 4.8L LS-based engines, including LM7, L59, LS4, LY5, LMG, LMF, LH6, LC9, and L33. Ideal for Rebuilds and Performance Upgrades – Suitable for daily drivers, work trucks, and performance...
FITS: 12-15 Ford, Lincoln 2.0L L4 DOHC Turbocharged
FITMENT NOTES: Set Services Complete Engine, 1.2x1.2x2.0
DNJ Engine Components is a full line provider of Domestic & Japanese engine parts for cars and trucks.
We carefully selected DNJ Engine Components as the sole provider. DNJ has a 30+ year track record of quality, experience, and trust. It makes sense for us to carry a brand that would help us earn customer loyalty in the long run
Manufacturer Part Number: 25198520. Please check compatibility chart, part photos, part number above carefully to make sure it is what you need
Fitment: Engine piston sets fit for Chevry Cruze 2011-2015; for Chevy Cruze Limited 2016; for Chevy Sonic 2012-2020; for Chevy Trax 2015-2021; for Buick Encore 2013-2020
Quality material: Manufactured with quality metal materials, such as wear-resistant alloys and high-quality steel, it ensures reliability and stability in long-term use
Performance enhancement: The optimized design of pistons, piston pins and piston rings reduces friction and improves engine efficiency, resulting in enhanced power output and fuel economy
Durability: Pistons and piston pins undergo rigorous quality testing and durability assessment to ensure stable performance under various working conditions
DNJ Engine Components is a full line provider of Domestic & Japanese engine parts for cars and trucks.
We carefully selected DNJ Engine Components as the sole provider. DNJ has a 30+ year track record of quality, experience, and trust. It makes sense for us to carry a brand that would help us earn customer loyalty in the long run
Include: 40 x Piston Rings-Standard Size, Replace OEM: 2M4978, a Complete Set for One Engine, are same with OEM standard quality, perfectly matching your original car, and can be installed directly
Fitment: Moly Piston Rings for for Chevy 4.8L 5.3L LC9 LS4 1999-2015, Moly Piston Rings for GMC 4.8L1999-2015, Moly Piston Rings for GMC 5.3L LC9, LS4 1999-2013 Engines, more detailed fitment please see bellow
Standard Specifications: Bore: 96mm/3.779 in. First Ring: 1.5mm/0.0591in. Second Ring: 1.5mm/0.0591in. Oil Ring: 3.0mm/0.118in.
When to replace: Molybdenum Coating-Reduce friction and better absorb fuel, Piston Rings help you solve problems: decreased engine performance, insufficient power, increased fuel consumption, oil burning, or blue smoke from exhaust, cylinder pulling etc.
Why to replace: High quality Stainless steel expansion, surface oxidation, phosphating and nitriding treatment,good sealing performance, low friction force, Seal the gap between the piston and cylinder wall to improve fuel efficiency and engine...
Premium Support: We focus on product quality and customer service, our customer service is top-notch. If you have any difficulties or needs, please contact us at any time
Last update on 2026-07-18 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Automotive Replacement Engine Piston Rings
Material Composition
Cast Iron: A common and cost-effective option, suitable for many standard applications.
Ductile Iron: Offers increased strength and durability over standard cast iron, ideal for performance or heavy-duty use.
Steel Alloys: Provide superior strength, heat resistance, and wear characteristics, often used in high-performance or racing engines.
Ring Type and Design
Compression Rings: The top rings responsible for sealing the combustion chamber. Ensure they match the original equipment manufacturer (OEM) specifications for bore size and profile.
Oil Control Rings: Located below the compression rings, these manage oil flow to prevent excess oil from entering the combustion chamber. Different designs (e.g., two-piece, three-piece) offer varying levels of oil control and tension.
Coatings: Some rings feature coatings like chrome, molybdenum, or plasma spray for enhanced durability and reduced friction.
Engine Specifications
Bore Size: Piston rings must precisely match the cylinder bore diameter for a proper seal. Measure accurately or consult your engine's service manual.
Piston Type: Ensure compatibility with your piston's groove depth and design (e.g., standard, Napier hook).
Engine Application: Consider whether the engine is used for daily driving, towing, or racing, as this influences the required durability and performance characteristics of the rings.
Frequently Asked Questions
What is the primary function of piston rings?
Piston rings serve three main functions: sealing the combustion chamber to prevent gas leakage, regulating the amount of oil reaching the cylinder walls, and transferring heat from the piston to the cylinder wall for dissipation.
How do I know which size piston rings I need?
Accurate measurement of the cylinder bore is essential for selecting the correct piston ring size. Consulting your vehicle's service manual or using a bore gauge will provide the precise diameter required.
Are coated piston rings worth the extra cost?
Coated piston rings, such as those with molybdenum or chrome, generally offer improved wear resistance and reduced friction. This can lead to longer ring life and better engine performance, often justifying the higher price for demanding applications.
Can I reuse my old piston rings?
It is strongly advised not to reuse old piston rings. Used rings are already worn and may not provide an adequate seal, leading to decreased performance, increased oil consumption, and potential engine damage.
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