Fel-Pro head gasket design addresses common sealing issue in 6.0L diesel engines

Aug. 20, 2014
The Fel-Pro Gaskets brand has introduced two innovative Fel-Pro PermaTorque MLS multi-layer-steel head gaskets that address a common combustion sealing issue encountered in 6.0L diesel engines.

The Fel-Pro® Gaskets brand has introduced two innovative Fel-Pro PermaTorque® MLS multi-layer-steel head gaskets that address a common combustion sealing issue encountered in 6.0L diesel engines used in more than 700,000 trucks manufactured between 2003 and 2010. The patent-pending PermaTorque MLS head gaskets (No. 26374PT – 18mm dowel applications; 26375PT – 20mm dowel applications) are now available through Fel-Pro distributors.

Fel-Pro Gaskets, “The Gaskets Professionals Trust™,” are manufactured by Federal-Mogul Motorparts, a division of Federal-Mogul Holdings Corporation.

Many owners of trucks equipped with Powerstroke® 6.0L diesel engines have encountered premature head gasket failures and resulting engine damage caused by leakage of combustion gasses into the cooling system. The engines, originally equipped with multi-layer-steel head gaskets, have been known to experience combustion leakage at as early as 50,000 miles of service under heavy loads.

“These engines generate a great deal of power, heat and combustion pressure and are being run in vehicles seeing heavy use, which can exceed the sealing capabilities of conventional, OE-style MLS head gaskets,” said Jim Daigle, product manager, sealing, Federal-Mogul Motorparts. “Our engineering team invested thousands of hours in designing and testing these new gaskets to ensure that they meet Fel-Pro standards.”

The new Fel-Pro PermaTorque MLS head gaskets feature several unique design enhancements that address combustion leakage and other issues encountered in these existing engines. The gaskets include a highly advanced new embossment design that creates increased spring force – and significantly more robust sealing contact – than conventional gasket designs under extreme loads.

The new PermaTorque MLS gaskets also feature a highly controlled thickness of proprietary FKM rubber in all critical sealing areas. Each gasket is engineered to easily accommodate engine overbore.

The new Fel-Pro gaskets provided leak-free performance in dynamometer tests used for 6.0L engines in 2003 to 2010 diesel trucks. Whereas some gaskets failed at approximately 300 engine hours, the Fel-Pro gaskets continued to provide an uncompromised seal. In addition, the Fel-Pro PermaTorque MLS gaskets withstood more than 1,000 extreme “thermal shock” cycles during which engine coolant temperatures were rapidly and repeatedly cycled between 240° F and -30° F.

The new gaskets also help customers address premature push rod wear and resulting oil contamination caused by undersized push rod guide holes in the OE gaskets. Federal-Mogul Motorparts engineers developed patent-pending oversize guide holes surrounded by a non-abrasive material in potential contact areas.

For more information regarding the new Fel-Pro PermaTorque MLS head gaskets for 6.0L diesel engines, please contact your Fel-Pro distributor or Federal-Mogul Motorparts representative.

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