What does the '.040' in the part number mean?

The '.040' indicates that these piston rings are 0.040 inches larger than the standard size. This is used when the engine cylinders have been bored out to a larger diameter during a rebuild to ensure a proper seal.

Are these rings compatible with all Ford 240 and 300 engines?

This set is designed for Ford 240 and 300 engines manufactured between 1965 and 1994. It's important to confirm your specific engine's year range and condition to ensure the 0.040 oversize is appropriate.

What is the benefit of reduced friction and oil consumption?

Reducing friction helps your engine run more efficiently, potentially improving fuel economy and power delivery. Minimizing oil consumption means less oil is burned during operation, leading to cleaner emissions and less frequent oil top-offs.

Mahle OE Piston Rings 50664CP.040 - Ford 240/300 Engines

Name: Mahle Rings Ford 240 Eng 65-72 Ford Ind Ford Trk 240300 Engs 65-94 Plain Ring Set
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-ford-240-eng-65-72-ford-ind-ford-trk-240300-engs-65-94-plai-t14-49818
Price: 40.64 USD
Availability: BackOrder

Mahle Rings Ford 240 Eng 65-72 Ford Ind Ford Trk 240300 Engs 65-94 Plain Ring Set

$40.64

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 Ford 240 and 300 engines, size .040. Reduces friction and oil consumption for longer engine life.

Key Features

Fits Ford 240 and 300 engines from 1965-1994, and many other vehicle applications.
Piston rings are 0.040 inches oversize.
Designed to reduce engine friction for improved performance and efficiency.
Helps minimize engine oil consumption for cleaner operation.
Built for a longer service life, ensuring reliability in your engine rebuild.
Mahle OE rings are technically advanced and driven by original equipment requirements.

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Will this fit your vehicle?

Product Details

If you're rebuilding the engine in your classic Ford truck or Bronco, or even a variety of GM vehicles from the 80s and 90s, a fresh set of piston rings is crucial for proper sealing and performance. These Mahle OE Piston Rings are designed to fit Ford 240 and 300 cubic inch engines from 1965-1994, as well as a wide range of other applications including Chevrolet Astro vans and C/K series trucks. They play a key role in ensuring your engine runs smoothly and efficiently.

Mahle engineers these rings with a focus on reducing internal friction, which helps improve fuel economy and engine responsiveness. They also work to minimize oil consumption, a common concern in older or rebuilt engines, helping to keep your exhaust cleaner and your oil levels stable. This attention to detail means you get rings that are built for a long service life, giving you confidence in your engine rebuild.

This set is specifically sized at 0.040 inches oversize, which is important to match with the bore of your cylinders. Always ensure your cylinder bores are properly measured and prepared to accept this size for a correct installation.