MLS Head Gasket Set - 3VZ(Head Gaskets Only)
MLS Head Gasket Set - 3VZ(Head Gaskets Only)
Our Price: $99.95

Part Number: 1024040

Details Fitment

MLS Head Gasket Set

(Up to +.040" Overbore)

The cylinder head gasket is arguably the most crucial seal in an automotive engine. Since the release of the internal combustion engine, gasket designers have specified many materials to meet this critical sealing challenge. Traditional copper and brass gaskets gave way to metal and asbestos in the 1950s, which in turn were superseded by composite metal and impregnated fiber/graphite composites by the 1980s. However, those systems were largely overtaken by the development of the Multi-Layer Steel (MLS) gasket in Japan during the early 1990s.

MLS gaskets remain the automotive industry's preferred method of sealing between the cylinder head and engine block, as yet unmatched by any other sealing system. Today an estimated 80 percent of new engines are designed with MLS gaskets as standard equipment, and further growth is projected. In the MLS system, multiple thin layers of cold-rolled spring grade stainless steel are coated with 7-25 microns of elastomeric material. The resilient elastomer is essential to the structure by providing micro-sealing of metal surface imperfections while resisting aggressive combustion gases, oils, and coolants at temperatures up to 250°C. The surfacing needs of today's engines are as complex as the engines themselves. Multi-valve aluminum cylinder heads on cast iron blocks are a tough combination to seal because of the difference in expansion rates between the two metals. If the surface finishes on the head and block are too rough, lateral shearing forces that occur as the engine heats up and cools down can scrub a head gasket to death.

To handle such forces, a growing number of late model engines now use multi-layer steel (MLS) head gaskets. MLS gaskets typically have 3 to 5 layers of steel and are extremely tough. But they have little conformability and require a very smooth finish on both the block and cylinder head to seal correctly. OEM specifications vary, but surface finish requirements for MLS head gaskets are 8 microinches Ra or less.

The ability to duplicate OEM surface finishes is a must on these applications, especially if OEM style MLS gaskets are being installed in the engine. Some aftermarket replacement gaskets for these engines have a thicker surface coating that can accommodate a more "traditional" surface finish of up to 60 microinches Ra. But most MLS replacement gaskets require the same surface finish as the original; which means engine builders must have surfacing equipment that can duplicate a finish that meets OEM specifications. MLS gaskets have also become very popular in racing. Most NASCAR engines today are running MLS gaskets, and the people who are putting these engines together typically want finishes in the low teens or even single digits! That level of smoothness can only be obtained with equipment that has the rigidity, accuracy and control flexibility to produce an ultra-smooth finish. LC Engineering can produce a finish on both the head and block in house.

NOTE: Parts are for the single overhead cam engines only. Will not work on Camry Engines 3VZ-FE.

This product should not be used in a manner that violates Federal EPA Laws.

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Average Customer Review: Average Customer Review: 5 of 5 5 of 5 Total Reviews: 5 Write a review.

  0 of 0 people found the following review helpful:
5 of 5 Head gaskets April 27, 2022
Reviewer: Jonathan Rossell from Tacoma , WA United States  
Hell of a lot better then stock gaskets, multi layers even

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  0 of 0 people found the following review helpful:
5 of 5 great service December 30, 2020
Reviewer: Matthew Whieldon from Abbotsford, BC Canada  
live in bc ordered a head gasket and received in two days. very quick and nice to see a company that packages products properly so they don't get damaged during transport! very happy

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  0 of 0 people found the following review helpful:
5 of 5 Excellent July 1, 2019
Reviewer: Ryan O'Dell from Tacoma, WA United States  
Packaged nice look good can't wait to get my engine back together

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  0 of 0 people found the following review helpful:
5 of 5 High Performance Head Gaskets February 28, 2019
Reviewer: Jeffrey Maier from Phoenix, AZ United States  
Just rebuilding the engine, this engine has a history for blowing the head gaskets finally great a have a high quality steel layered gasket.

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  0 of 0 people found the following review helpful:
5 of 5 . June 18, 2018
Reviewer: Victoria Ball from Rancho Cucamonga, CA United States  
Very quick service and great products!! Definitely will be ordering from them again.

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