Reinforced Head Gasket RENAULT Clio RS Megane RS F4R

Here we offer you several reinforced head gaskets for the F4R engine from ATHENA and COMETIC, the technical specifications of which you will find below.

Below (click on the image) you will find the head studs / head bolts for the RENAULT F4R engine:

Technical specification of the original gasket

• Bore: 82.70mm
• Compressed thickness: 0.70mm

Technical specification

• Bore: up to 83mm
• Compressed thickness(es) available: 0.85mm
• Gasket type: MLS
• Reference: 338245R

Designed and manufactured in Italy, Athena reinforced head gaskets are available in two forms:

• MLS: these gaskets are made up of several layers of stainless steel stacked and riveted together. The stainless steel layers are laser-cut for increased precision and receive an elastomer-based surface treatment (NBR or FKM). To achieve optimal sealing, the contours of the cylinders and the water and oil passages are stamped / embossed. For the most extreme applications, reinforcement is added around the cylinders.
• O-ring: these gaskets consist of a steel sheet covered with asbestos-free aramid fibre and a stainless steel AISI 304 ring (around the cylinders). A bead of silicone applied at the critical points (water and oil passages) ensures maximum sealing of the head gasket. This type of gasket is compulsory for heavily turbocharged engines.

Technical specification

• Bore: up to 83mm or up to 84.5mm
• Gasket type: MLS
• Number of layers: 3, then 5 for gaskets from 1.68mm thickness
• Compressed thickness(es) available: 0.69, 0.76, 0.91, 1.02, 1.14, 1.30, 1.42, 1.52, 1.68, 1.78, 1.91, 2.03, 2.13, 2.18, 2.34, 2.49, 3.05, 3.56mm
• References: C4518, C4518-027, C4518-030, C4518-036, C4518-040, C4518-045, C4518-051, C4518-056, C4518-066, C4518-070, C4518-075, C4518-080, C4518-086, C4518-092, C4518-098, C4518-120, C4518-140, C4519, C4519-027, C4519-030, C4519-036, C4519-040, C4519-045, C4519-051, C4519-056, C4519-066, C4519-070, C4519-075, C4519-080, C4519-086, C4519-092, C4519-098, C4519-120, C4519-140

Founded by Bob Gorman in 1989, the Cometic brand is recognised worldwide as a leader in the design and manufacture of reinforced head gaskets. Like all the brand's products, these are manufactured in the United States. Cometic reinforced head gaskets are made up of several stamped stainless steel layers held together by rivets. There are three types of Cometic head gasket:

MLS: equivalent to the Athena MLS gaskets, these multi-layer gaskets (between 3 and 5 stainless steel layers depending on gasket thickness) feature embossing around the cylinders and fluid passages.

• MLX: this gasket has the same base as the MLS gasket but with reinforcement (folded layer) added around the cylinders and a special high-temperature coating.

• HP: this is an MLX gasket to which an additional layer has been added to reinforce the sealing of the cylinders (see below)