Gasket Cylinder head reinforced BMW 325i 330i E46 525i 530i E39 E60 Z3 Z4 M54B30

We offer you here several reinforced Cylinder head Gaskets for M54B25/B30 engine from BrandATHENA and COMETICthe technical characteristics of which you will find below.

Technical characteristics of the Original Gasket

• Motor bore: 84mm
• Thickness: 0.70mm

Technical characteristics

• Motor bore: up to 84.5 or 86 or 87.6mm
• Thickness(es) to choose from: 1.50, 2.00mm
• Gasket Type: O-Ring
• References: 330022R, 330023R, 330141R

Designed and manufactured in Italy, the reinforced Cylinder head Gaskets from the Brand Athena are available in two forms:

• MLS:these Gasketsare MADE UP of several sheets of stainless steel superposed and riveted together. The stainless steel sheets are laser cut for increased precision and receive an elastomer-based surface treatment (NBR or FKM). In order to obtain optimal sealing, the contours of the cylinders and water and oil passages are stamped/embossed. Forthe most extreme Applications, reinforcement at the level of the cylinders is added.
• O-Ring:these Gasketsconsist of a steel sheet covered with asbestos-free aramid fiber and an AISI 304 stainless steel ring(at the cylinder level). A bead of silicone applied to critical points (water and oil passages) ensures maximum sealing of the Head Gasket. This type of Gasket is mandatory for heavily supercharged engines.

Features techniques

• Motor bore: up to 85mm
• Gasket Type: MLS
• Number of sheets: 3 then 5 for Gaskets from 1.52mm thick
• Thickness(es) to choose from: 0.69, 0.76, 0.91, 1.02, 1.14, 1.30, 1.52, 1.68, 1.78, 1.91, 2.03, 2.13, 2.18, 2.26, 2.34, 2.49, 3.05, 3.56mm
• References: C4352, C4352-027,C4352-030, C4352-036, C4352-040, C4352-045, C4352-051, C4352-060, C4352-066, C4352-070, C4352-075, C4352-080, C4352-084, C4352-086, C4352-089, C4352-092, C4352-098, C4352-120, C4352-140

Founded by Bob Gorman in 1989, Brand Cometic is recognized worldwide as a leader in the design and manufacturing of reinforced cylinder head gaskets. These latter, like all of the Brand's Products, are made in the United States. The Cometic reinforced Cylinder head Gaskets consist of several stamped stainless steel sheets held together by rivets. There are three types of Cometic Cylinder head Gaskets:

This technology requires less tightening of the cylinder head screws, thus reducing bore distortion and obtaining better load distribution across the entire gasket.

• MLS:Equivalent to MLS Athena Gaskets, these multi-layer Gaskets (between 3 and 5 stainless steel sheets depending on the thickness of the Gasket) have stampings around the cylinders and fluid passages.

• MLX:This Gasket has an identical base to the MLS Gasket but a reinforcement (folded sheet) at the level of the cylinders and a special high temperature Coating are added.

• HP:This is a Gasket MLX on whichan extra layer was addedwhose aim is to reinforce the sealing of the cylinders (see below)