SKU: 69472759463

Cometic GM L18 Vortec 8100 Gen-VII Big Block V8 .089in MLS Cylinder Head Gasket - 4.280in Bore - RHS

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Description

Cometic GM L18 Vortec 8100 Gen-VII Big Block V8 .089in MLS Cylinder Head Gasket - 4.280in Bore - RHSComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 098". Cometic MLS (Multi Layer Steel) Head Gaskets provide maximum sealing performance for todays high output engines and require no sealants. MLS gaskets are ideal for both aluminum heads to aluminum blocks and aluminum heads to cast iron blocks. They can withstand the shearing force created by the two

Comprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0.098". Cometic MLS (Multi-Layer Steel) Head Gaskets provide maximum sealing performance for todays high output engines and require no sealants. MLS gaskets are ideal for both aluminum heads to aluminum blocks and aluminum heads to cast iron blocks. They can withstand the shearing force created by the two materials. MLS gaskets have increased strength because they are comprised of multiple layers of stainless steel; which also creates the ability to rebound and resist corrosion. The outer layers are embossed and coated on both sides with Viton (a flour elastomer rubber based material that is heat resistant to 250 C/ 482 F). Viton is designed to meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes. The center or shim layer is uncoated stainless steel, which can be varied to accommodate multiple thickness requirements.

This Part Fits:

Year Make Model Submodel
2002-2004 Chevrolet Avalanche 2500 Base
2005-2006 Chevrolet Avalanche 2500 LS
2005-2006 Chevrolet Avalanche 2500 LT
2001-2002 Chevrolet Express 3500 Base
2001-2002 Chevrolet Express 3500 LS
2001-2005 Chevrolet Silverado 2500 HD Base
2001-2006 Chevrolet Silverado 2500 HD LS
2001-2006 Chevrolet Silverado 2500 HD LT
2004-2006 Chevrolet Silverado 2500 HD WT
2007 Chevrolet Silverado 2500 HD Classic LS
2007 Chevrolet Silverado 2500 HD Classic LT
2007 Chevrolet Silverado 2500 HD Classic WT
2001-2005 Chevrolet Silverado 3500 Base
2001-2006 Chevrolet Silverado 3500 LS
2001-2006 Chevrolet Silverado 3500 LT
2004,2006 Chevrolet Silverado 3500 WT
2007 Chevrolet Silverado 3500 Classic LS
2007 Chevrolet Silverado 3500 Classic LT
2007 Chevrolet Silverado 3500 Classic WT
2001 Chevrolet Suburban 2500 Base
2001-2006 Chevrolet Suburban 2500 LS
2001-2006 Chevrolet Suburban 2500 LT
2001-2002 GMC Savana 3500 Base
2001-2002 GMC Savana 3500 SLT
2002-2005 GMC Sierra 2500 HD Base
2001-2002,2006 GMC Sierra 2500 HD SL
2001-2006 GMC Sierra 2500 HD SLE
2001-2006 GMC Sierra 2500 HD SLT
2003-2006 GMC Sierra 2500 HD WT
2007 GMC Sierra 2500 HD Classic SL
2007 GMC Sierra 2500 HD Classic SLE
2007 GMC Sierra 2500 HD Classic SLT
2007 GMC Sierra 2500 HD Classic WT
2002-2005 GMC Sierra 3500 Base
2001-2002,2006 GMC Sierra 3500 SL
2001-2006 GMC Sierra 3500 SLE
2001-2006 GMC Sierra 3500 SLT
2004-2006 GMC Sierra 3500 WT
2007 GMC Sierra 3500 Classic SL
2007 GMC Sierra 3500 Classic SLE
2007 GMC Sierra 3500 Classic SLT
2007 GMC Sierra 3500 Classic WT
2001-2006 GMC Yukon XL 2500 SLE
2001-2006 GMC Yukon XL 2500 SLT
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Exchange/Return Notes
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SKU: 69472759463

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4.2 ★★★★★
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Product Reviews
A
Verified Purchase
Al N.
Alexandria, US
★★★★★ 5
Brighter than my headlights on bright!
Color: 26Inch Light White
This Nilight 26 inch 540 watt 50,000 lumen Triple Row Driving light is the brightest light I've ever had on my truck. I bought a kit to mount the light to my Grill Guard, just above the bumper. I can see deer just like daytime, at least two blocks before I get to them. I've never seen a light bar as bright. There are no cons if you ignore the fact that it comes without a wiring harness. I definitely recommend this light bar!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 9, 2026
Z
Verified Purchase
Zachary Russell
Natrona Heights, US
★★★★★ 5
Satisfied customer!
Color: 26Inch Light Amber&White w/Wiring Harness, Color: 26Inch Light Amber&White w/Wiring Harness
First, the picture isn't great, but I didn't intend it for the review. I'm really impressed with the quality and brightness of this light for the price! Installation was easy and straightforward. If you can do some basic work with hand tools, you can install this light in about 30 minutes, including wiring. I like the functionality of having the different light modes, although I typically just use the bright white setting. Some people complained about water getting into their light, but I haven't had any problem with water resistance after several months (including rain, snow, off-roading, and spraying it down with high pressure at the car wash. It fit perfect, just make sure you pay attention to the measurements before you order.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 14, 2025
A
Verified Purchase
Amazon Customer
Cuba, US
★★★★★ 4
Great performance but low grade material.
Color: 26Inch light White +Wiring Harness, Color: 26Inch light White +Wiring Harness
I want to give it 5 stars but I can't because: The light bar is extremely bright and they go a great distance. I am very satisfied with how much it puts out. 5 out of 5 stars for its performance. HOWEVER nilight seems like they're starting to go cheap with their build material. 2 out of 5 stars for that. I have added photos of the older material vs new material for reference. Their old material is 3.3mm thickness compared to their new material at 2.7mm thickness. And that's for the mounting brackets and the light bar housing. It doesn't seem like .6mm would be a big deal but it's noticeably less rigid. Hand tight started bending the metal. Great product for sure but build material is low grade. Not trying to knock them, I love nilight products and will keep using them but it seems like they trying to save money by cutting weight which makes it less rigid. Dings and scratches come easily now. It worries me a little bit if it can take the abuse of vibrations over time from driving around now.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 19, 2026
R
Verified Purchase
Richard M
Waukegan, US
★★★★★ 5
It will light up your life
Color: 26Inch Light White w/Wiring Harness
I only got to use them once before my jeep was totaled. They’re super bright. Great build quality. It survived taking a header down a mountain side and rolling 4 times. When the jeep was recovered, the light bar still worked!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 16, 2025
A
Verified Purchase
Adam
Fort Morgan, US
★★★★★ 5
Great light - very bright.
Color: 26Inch Light White
Installed on a Bronco. It wasn't designed for a Bronco, but I was able to mount it after a trip to hardware store and some minor modifications. The quality of the light itself seems good. Time will tell how long it lasts. It definitely lights up the road and is worth the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2025

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