Athena MLS Head Gasket for Nissan SR20DET 1mm 87.5mm 338152R

ATHENA Multi-Layer Steel (MLS) Head Gasket

Material
ATHENA MLS head gaskets feature a combination of 3 to 5 layers made from different types of raw materials.

The combination of outer and inner layers is designed to provide superior performance compared to standard compression, and the type of steel used can vary depending on engine requirements.
Athena MLS gaskets provide uniform torque load across the entire sealing surface to compensate for any cylinder deformation.

The Athena MLS gasket is the ideal solution for both aluminum cylinder heads with cast iron blocks and aluminum cylinder heads with aluminum blocks.

Manufacturing process
The newly designed Athena MLS head gaskets are made of high-quality, high-hardness 301 stainless steel.
Each layer is individually formed by state-of-the-art laser cutting and embossed with an optimized forming process.
Two layers of the head gasket undergo a stress-relief process to significantly reduce the stress induced by embossing.
After the stress-relief process, a patented two-component polymeric coating is applied, which ensures uniform coverage of the outer layers, without interruptions in the coating. This process ensures the micro-sealing of engine coolant and oil fluids.

Athena MLS gaskets are tested and analyzed on engine test benches and in endurance tests.

Gas Stopper Technology

Gas Stopper technology is a key factor in the design of competition MLS head gaskets. The stainless steel stopper layer incorporates an innovative active folding system that provides a high-pressure seal around the cylinder bore when the cylinder head is tightened. The gas stopper is located around the combustion chamber, allowing for a tighter fit between the cylinder head and the engine block, preventing gas leaks.

This also prevents component deformation due to faster equalization of their temperature. Benefits

Superior sealing properties under high-pressure conditions

Greater elasticity and resistance to constant load

Optimized load balance

Improved engine performance

Increased durability

Patented coating technology

Our two-component polymer coating is applied after the stress-relief process and ensures uniform coverage of the outer layers, without interruptions in the coating. This process ensures the micro-sealing of engine coolant/oil fluids and meets the demands of various harsh environments.

The first layer is a high-temperature compound that adapts to irregularities in the engine block and cylinder head surface. (Typical MLS head gaskets require a surface finish of 30 Ra, while Athena's seal surface finishes up to 60 Ra).

The second layer is easily removed and does not adhere to the contact surfaces when the engine is disassembled.

Compatible with:

NISSAN SR20DET 1998 cc 147 kW