What does it mean that these rings are 0.040 inch undersize?

This means the rings are manufactured to fit pistons that have been machined to be 0.040 inches larger in diameter than their original size. This is typically done during an engine rebuild when cylinder walls have worn beyond standard specifications.

Are these rings suitable for a performance build?

These Mahle OE rings are designed to meet original equipment specifications, focusing on durability, friction reduction, and oil control for standard engine operation. For high-performance or racing applications, specific performance-oriented ring sets might be considered.

What is the benefit of reducing engine oil consumption?

Minimizing oil consumption helps maintain proper lubrication levels throughout the engine, preventing premature wear on critical components like bearings and cylinder walls. It also reduces exhaust smoke and can help keep combustion chambers cleaner.

Mahle OE Piston Rings 50722.040 - Chrysler/Dodge 440

Name: Mahle Rings Chry 440 Eng 66-78 Chry Ind Engs Dodge 440 Eng 66-78 Dodge Trk Plain Ring Set
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-chry-440-eng-66-78-chry-ind-engs-dodge-440-eng-66-78-dodge--t14-50317
Price: 69.77 USD
Availability: BackOrder

Mahle Rings Chry 440 Eng 66-78 Chry Ind Engs Dodge 440 Eng 66-78 Dodge Trk Plain Ring Set

$69.77

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Mahle OE piston rings for Chrysler/Dodge 440 engines (1966-1978). They help reduce friction and oil consumption for better engine life.

Key Features

Fits 1966-1978 Chrysler and Dodge 440 cubic inch engines.
Piston rings are 0.040 inch undersize.
Designed to reduce engine friction and oil consumption.
Built to meet original equipment manufacturer requirements.
Helps ensure a longer service life for the engine.
Provides a solid seal between the piston and cylinder wall.

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Will this fit your vehicle?

Product Details

These Mahle OE piston rings are 0.040 inches undersize, meaning they are designed to fit pistons that have been machined to a slightly larger diameter. This is common when rebuilding an engine that has seen wear. They are built to meet the demanding requirements of original equipment manufacturers, focusing on reducing internal engine friction and minimizing oil consumption. This attention to detail helps ensure a longer service life for your 440 cubic inch engine.

Mahle has a reputation for advanced piston ring technology, and this set is no exception. They are engineered to provide a solid seal between the piston and cylinder wall, which is crucial for maintaining compression and preventing blow-by. This translates to more efficient combustion and a smoother running engine. When you're rebuilding a classic Mopar big block like the 440, using well-made components like these Mahle rings is key to a successful outcome.

This set is designed for a wide range of Chrysler and Dodge vehicles from the mid-60s to the late 70s, including popular models like the Dodge Charger, Plymouth Barracuda, and Chrysler New Yorker. Make sure to check the full fitment list to confirm compatibility with your specific application.