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Description
Cometic Chevrolet Mark-IV Big Block V8 .080in MLS Cylinder 4.320in Bore Head GasketComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 080". 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 0.080". 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 |
|---|---|---|---|
| 1965-1975 | Chevrolet | Bel Air | Base |
| 1965-1972 | Chevrolet | Biscayne | Base |
| 1973-1974 | Chevrolet | Blazer | Base |
| 1969-1972 | Chevrolet | Brookwood | Base |
| 1978-1980 | Chevrolet | C10 | Big Ten |
| 1975-1980 | Chevrolet | C10 | Cheyenne |
| 1975-1980 | Chevrolet | C10 | Custom Deluxe |
| 1975-1980 | Chevrolet | C10 | Scottsdale |
| 1975-1980 | Chevrolet | C10 | Silverado |
| 1968-1974 | Chevrolet | C10 Pickup | Base |
| 1968-1974 | Chevrolet | C10 Suburban | Base |
| 1975-1980 | Chevrolet | C10 Suburban | Custom Deluxe |
| 1975-1980 | Chevrolet | C10 Suburban | Scottsdale |
| 1975-1980 | Chevrolet | C10 Suburban | Silverado |
| 1990 | Chevrolet | C1500 | 454 SS |
| 1990 | Chevrolet | C1500 | Cheyenne |
| 1990 | Chevrolet | C1500 | Scottsdale |
| 1990 | Chevrolet | C1500 | Silverado |
| 1990 | Chevrolet | C1500 | WT |
| 1975-1981 | Chevrolet | C20 | Cheyenne |
| 1981-1986 | Chevrolet | C20 | Custom |
| 1975-1980 | Chevrolet | C20 | Custom Deluxe |
| 1981 | Chevrolet | C20 | Deluxe |
| 1975-1986 | Chevrolet | C20 | Scottsdale |
| 1975-1986 | Chevrolet | C20 | Silverado |
| 1968-1974 | Chevrolet | C20 Pickup | Base |
| 1968-1974 | Chevrolet | C20 Suburban | Base |
| 1981-1986 | Chevrolet | C20 Suburban | Custom |
| 1975-1980 | Chevrolet | C20 Suburban | Custom Deluxe |
| 1981 | Chevrolet | C20 Suburban | Deluxe |
| 1975-1980,1982,1984-1986 | Chevrolet | C20 Suburban | Scottsdale |
| 1975-1977,1979-1980,1982-1986 | Chevrolet | C20 Suburban | Silverado |
| 1975-1981 | Chevrolet | C30 | Cheyenne |
| 1981-1986 | Chevrolet | C30 | Custom |
| 1975-1980 | Chevrolet | C30 | Custom Deluxe |
| 1981 | Chevrolet | C30 | Deluxe |
| 1975-1986 | Chevrolet | C30 | Scottsdale |
| 1975-1986 | Chevrolet | C30 | Silverado |
| 1968-1974 | Chevrolet | C30 Pickup | Base |
| 1988-1990 | Chevrolet | C3500 | Cheyenne |
| 1988-1990 | Chevrolet | C3500 | Scottsdale |
| 1988-1990 | Chevrolet | C3500 | Silverado |
| 1967,1969,1971-1972 | Chevrolet | Camaro | Base |
| 1967,1969 | Chevrolet | Camaro | RS |
| 1967-1972 | Chevrolet | Camaro | SS |
| 1972 | Chevrolet | Camaro | Z28 |
| 1966-1972 | Chevrolet | Caprice | Base |
| 1973-1976 | Chevrolet | Caprice | Classic |
| 1976 | Chevrolet | Caprice | Classic Estate |
| 1976 | Chevrolet | Caprice | Classic Landau |
| 1975-1976 | Chevrolet | Caprice | Classic Sport |
| 1973-1974 | Chevrolet | Caprice | Estate |
| 1975 | Chevrolet | Caprice | Estate Wagon |
| 1965-1966,1968 | Chevrolet | Chevelle | 300 |
| 1967-1969 | Chevrolet | Chevelle | 300 Deluxe |
| 1970-1972 | Chevrolet | Chevelle | Base |
| 1967-1972 | Chevrolet | Chevelle | Concours |
| 1969-1972 | Chevrolet | Chevelle | Concours Estate |
| 1973 | Chevrolet | Chevelle | Deluxe |
| 1969-1972 | Chevrolet | Chevelle | Greenbrier |
| 1973 | Chevrolet | Chevelle | Laguna |
| 1973 | Chevrolet | Chevelle | Laguna Estate |
| 1974-1975 | Chevrolet | Chevelle | Laguna Type S-3 |
| 1965-1974 | Chevrolet | Chevelle | Malibu |
| 1974-1975 | Chevrolet | Chevelle | Malibu Classic |
| 1974 | Chevrolet | Chevelle | Malibu Classic Estate |
| 1973 | Chevrolet | Chevelle | Malibu Estate |
| 1965 | Chevrolet | Chevelle | Malibu Super Sport |
| 1968-1972 | Chevrolet | Chevelle | Nomad |
| 1971-1972 | Chevrolet | Chevelle | SS |
| 1967-1970 | Chevrolet | Chevelle | SS 396 |
| 1966 | Chevrolet | Chevelle | Super Sport 396 |
| 1968 | Chevrolet | Chevy II | Nova |
| 1965-1974 | Chevrolet | Corvette | Base |
| 1966-1975 | Chevrolet | El Camino | Base |
| 1975 | Chevrolet | El Camino | Classic |
| 1968-1974 | Chevrolet | El Camino | Custom |
| 1968-1975 | Chevrolet | El Camino | SS |
| 1969-1970 | Chevrolet | Estate | Base |
| 1973-1974 | Chevrolet | G10 Van | Base |
| 1976 | Chevrolet | G20 | Beauville |
| 1976 | Chevrolet | G20 | Chevy Van |
| 1976 | Chevrolet | G20 | Sportvan |
| 1973-1974 | Chevrolet | G20 Van | Base |
| 1973-1974 | Chevrolet | G20 Van | Sportvan |
| 1975-1976,1988-1990 | Chevrolet | G30 | Beauville |
| 1975-1976,1988-1990 | Chevrolet | G30 | Chevy Van |
| 1975-1976,1988-1990 | Chevrolet | G30 | Hi-Cube |
| 1975-1976,1988-1990 | Chevrolet | G30 | Sportvan |
| 1973-1974 | Chevrolet | G30 Van | Base |
| 1965-1976 | Chevrolet | Impala | Base |
| 1975-1976 | Chevrolet | Impala | Custom |
| 1976 | Chevrolet | Impala | Custom Landau |
| 1976 | Chevrolet | Impala | S |
| 1975-1976 | Chevrolet | Impala | Sport |
| 1965-1967 | Chevrolet | Impala | SS |
| 1976,1979-1980 | Chevrolet | K10 | Cheyenne |
| 1976,1979-1980 | Chevrolet | K10 | Custom Deluxe |
| 1976,1979-1980 | Chevrolet | K10 | Scottsdale |
| 1976,1979-1980 | Chevrolet | K10 | Silverado |
| 1968-1974 | Chevrolet | K10 Pickup | Base |
| 1968-1974 | Chevrolet | K10 Suburban | Base |
| 1976-1978,1980 | Chevrolet | K20 | Cheyenne |
| 1976-1978,1980 | Chevrolet | K20 | Custom Deluxe |
| 1976-1978,1980 | Chevrolet | K20 | Scottsdale |
| 1976-1978,1980 | Chevrolet | K20 | Silverado |
| 1968-1974 | Chevrolet | K20 Pickup | Base |
| 1968-1974 | Chevrolet | K20 Suburban | Base |
| 1985 | Chevrolet | K20 Suburban | Custom |
| 1985 | Chevrolet | K20 Suburban | Scottsdale |
| 1985 | Chevrolet | K20 Suburban | Silverado |
| 1977,1980-1981 | Chevrolet | K30 | Cheyenne |
| 1981-1986 | Chevrolet | K30 | Custom |
| 1977,1980 | Chevrolet | K30 | Custom Deluxe |
| 1981 | Chevrolet | K30 | Deluxe |
| 1977,1980-1986 | Chevrolet | K30 | Scottsdale |
| 1977,1980-1986 | Chevrolet | K30 | Silverado |
| 1968-1974 | Chevrolet | K30 Pickup | Base |
| 1988-1990 | Chevrolet | K3500 | Cheyenne |
| 1988-1990 | Chevrolet | K3500 | Scottsdale |
| 1988-1990 | Chevrolet | K3500 | Silverado |
| 1976 | Chevrolet | K5 Blazer | Base |
| 1976-1978 | Chevrolet | K5 Blazer | Cheyenne |
| 1977-1978 | Chevrolet | K5 Blazer | Custom Deluxe |
| 1978 | Chevrolet | K5 Blazer | Silverado |
| 1969-1972 | Chevrolet | Kingswood | Base |
| 1969-1972 | Chevrolet | Kingswood | Estate |
| 1970-1974 | Chevrolet | Monte Carlo | Base |
| 1973-1974 | Chevrolet | Monte Carlo | Landau |
| 1973,1975 | Chevrolet | Monte Carlo | S |
| 1969-1972 | Chevrolet | Nova | Base |
| 1973 | Chevrolet | P10 Van | Base |
| 1976,1979 | Chevrolet | P20 | Base |
| 1976,1979 | Chevrolet | P20 | Step-Van |
| 1970-1971,1973 | Chevrolet | P20 Van | Base |
| 1975-1989 | Chevrolet | P30 | Base |
| 1975-1985,1987-1989 | Chevrolet | P30 | Step-Van |
| 1970-1974 | Chevrolet | P30 Van | Base |
| 1988 | Chevrolet | R20 | Cheyenne |
| 1987-1988 | Chevrolet | R20 | Custom Deluxe |
| 1987-1988 | Chevrolet | R20 | Scottsdale |
| 1987-1988 | Chevrolet | R20 | Silverado |
| 1987 | Chevrolet | R20 Suburban | Custom Deluxe |
| 1987-1988 | Chevrolet | R20 Suburban | Scottsdale |
| 1987-1988 | Chevrolet | R20 Suburban | Silverado |
| 1989 | Chevrolet | R2500 | Cheyenne |
| 1989 | Chevrolet | R2500 | Scottsdale |
| 1989 | Chevrolet | R2500 | Silverado |
| 1989-1990 | Chevrolet | R2500 Suburban | Scottsdale |
| 1989-1990 | Chevrolet | R2500 Suburban | Silverado |
| 1988 | Chevrolet | R30 | Cheyenne |
| 1987-1988 | Chevrolet | R30 | Custom Deluxe |
| 1987-1988 | Chevrolet | R30 | Scottsdale |
| 1987-1988 | Chevrolet | R30 | Silverado |
| 1989-1990 | Chevrolet | R3500 | Cheyenne |
| 1989-1990 | Chevrolet | R3500 | Scottsdale |
| 1989-1990 | Chevrolet | R3500 | Silverado |
| 1969-1972 | Chevrolet | Townsman | Base |
| 1987 | Chevrolet | V20 Suburban | Custom Deluxe |
| 1987-1988 | Chevrolet | V20 Suburban | Scottsdale |
| 1987-1988 | Chevrolet | V20 Suburban | Silverado |
| 1990 | Chevrolet | V2500 Suburban | Scottsdale |
| 1990 | Chevrolet | V2500 Suburban | Silverado |
| 1988 | Chevrolet | V30 | Cheyenne |
| 1987-1988 | Chevrolet | V30 | Custom Deluxe |
| 1987-1988 | Chevrolet | V30 | Scottsdale |
| 1987-1988 | Chevrolet | V30 | Silverado |
| 1989-1990 | Chevrolet | V3500 | Cheyenne |
| 1989-1990 | Chevrolet | V3500 | Scottsdale |
| 1989-1990 | Chevrolet | V3500 | Silverado |
| 1975-1978 | GMC | C15 | Base |
| 1977-1978 | GMC | C15 | Heavy Half |
| 1975-1978 | GMC | C15 | High Sierra |
| 1977 | GMC | C15 | Indy Hauler |
| 1975-1978 | GMC | C15 | Sierra Classic |
| 1975-1978 | GMC | C15 | Sierra Grande |
| 1978 | GMC | C15 | Street Coupe |
| 1975-1978 | GMC | C15 Suburban | Base |
| 1975-1978 | GMC | C15 Suburban | High Sierra |
| 1975-1978 | GMC | C15 Suburban | Sierra Classic |
| 1975-1978 | GMC | C15 Suburban | Sierra Grande |
| 1968-1974 | GMC | C15/C1500 Pickup | Base |
| 1968-1974 | GMC | C15/C1500 Suburban | Base |
| 1979-1980 | GMC | C1500 | Base |
| 1979-1980 | GMC | C1500 | Heavy Half |
| 1979-1980 | GMC | C1500 | High Sierra |
| 1979-1980 | GMC | C1500 | Sierra Classic |
| 1979-1980 | GMC | C1500 | Sierra Grande |
| 1979-1980 | GMC | C1500 | Street Coupe |
| 1979-1980 | GMC | C1500 Suburban | Base |
| 1979-1980 | GMC | C1500 Suburban | High Sierra |
| 1979-1980 | GMC | C1500 Suburban | Sierra Classic |
| 1979-1980 | GMC | C1500 Suburban | Sierra Grande |
| 1975-1978 | GMC | C25 | Base |
| 1975-1978 | GMC | C25 | High Sierra |
| 1975-1978 | GMC | C25 | Sierra Classic |
| 1975-1978 | GMC | C25 | Sierra Grande |
| 1975-1978 | GMC | C25 Suburban | Base |
| 1975-1978 | GMC | C25 Suburban | High Sierra |
| 1975-1978 | GMC | C25 Suburban | Sierra Classic |
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4.4 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
Quality materials, great mouse
Color: Graphite, Pattern Name: Mouse
I have gone through many mice looking for one that feels 'just right'. This is it. The shape is perfect for my hand, the haptic feedback is nice, if not very useful to me, and the smoothness with which it moves across my pad is well worth the price alone. Nicely configurable in the Logi app.
One note - It's fine for me, but this is a very large mouse.
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Reviewed in the United States on June 4, 2026
★★★★★ 5
One Mouse to Bind Them, in the Long Hours of the Desk
Color: Graphite, Pattern Name: Mouse
It was the winter of the endless scroll, when the days in River Grove stretched thin and pale as old parchment and the light from the monitor became the only sun we knew, that my old mouse—poor, faithful thing—began its slow betrayal. Clicks faltered like the last breath of a dying Rohirrim steed; the wheel spun loose and reckless, sending spreadsheets cascading into chaos as though the very order of Middle-earth had unraveled; the cursor wandered with the aimless grief of a man who has lost his king. I sat there in the dim room above the garage, wrist aching like the shoulder that once bore the weight of Andúril, staring at the screen while deadlines crept closer, silent and inexorable as the shadow over Mordor.
Then the Logitech MX Master 4 arrived, graphite-dark as the armor of Isildur’s line, shaped not for haste but for endurance, its curves rising like the hills of the Shire remade for the hand of a weary scribe. I took it up and felt the weight settle—not heavy, but certain, as though the mouse itself understood the gravity of long labor. The MagSpeed wheel turned under my thumb with the smooth inevitability of the Anduin in flood, ultra-fast when the document must race to its end, precise when a single pixel demanded mercy. The haptic feedback thrummed beneath my fingers like the deep pulse of the earth when the Ents march—subtle, insistent, alive. Every scroll, every gesture carried the quiet authority of a thing forged to outlast lesser tools.
It paired without ceremony—Bluetooth to the laptop, Logi Bolt to the desktop—crossing between machines as swiftly as the Eagles bore Gandalf from the tower, no fumbling, no oaths sworn in frustration. The side buttons waited like loyal vassals: one to summon the hidden application switcher, another to gesture across screens as though drawing maps of realms unseen. The gesture button itself became my quiet command—thumb pressed, fingers sweeping, and windows arranged themselves in obedient array, the way the hosts of the West might have arrayed themselves upon the Pelennor Fields. And when the battery whispered low, the USB-C cord drank from the wall like a pilgrim at the fountains of Imladris, three hours of life from a single minute’s charge.
I have worked with it now through the gray mornings when the snow muffled every sound outside, through the late nights when the house slept and only the cursor moved, through the sudden urgent revisions that once would have left me cursing the heavens. It does not slip. It does not tire. It endures, as the light of Eärendil endures above the storm, a small fierce companion against the gathering hours.
If your days are measured in documents and deadlines, in the slow turning of wheels both literal and metaphorical, take this MX Master 4. It is not mere plastic and circuit; it is covenant between hand and machine, a shield against the tedium of the long watch, the fellowship your desk has hungered for in its quiet exile.
Ten stars out of five, though the heavens ration light to fewer. I would carry it into the Cracks of Doom itself and fear no misclick.
🖱️🧙♂️📜🌑
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Reviewed in the United States on February 15, 2026
★★★★★ 4
Almost Perfect
Color: Graphite, Pattern Name: Mouse
If you are looking for a quiet mouse, this is it. I was skeptical about the "ergonomics" but find that it is much more comfortable for me than the more traditional design for left and right clicking. Simple moving seems fine but its weight is a bit excessive for lifting for repositioning in tight spaces. It is difficult to lift without activating the button on the haptic pad, even set to require firm pressure. A bit more contour on the right would solve this nicely to allow lifting the mouse without repositioning your hand.
The forward and back buttons may be a bit awkward for some people. I'm slowly adjusting. Actually, each mouse I've owned needed a bit of getting used to. Side scrolling doesn't always work as it seems it would. Frequently, it scrolls vertically like the "normal" scroll wheel depending on the program.
Haptic feedback is not a commonly used feature yet, however, Windows will be slowly adding haptic features to later updates from what I've read. I keep the setting on the lowest haptic feedback level and for what it functions on so far seems natural and not intrusive.
There are many adjustments and customizations, too many to go into since I haven't played around with most. So far, even with what may seem like a lot of negative thoughts, I love this mouse. It would be five stars if lifting to repositioning in tight spaces was easier.
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Dependable, Reliable
Size: 1 Pack, Style: USB Receiver, Color: Swift Grey, Size: 1 Pack, Style: USB Receiver, Color: Swift Grey
As advertised. Logitech, best mouse for your hard-earned cheddar!
It’s not that the (years) old Logitech mouse failed in any operational way, it just got that gummy, sticky surface texture that’s impossible to remove. While shopping for a replacement I noticed an off-brand mouse/keyboard combo and thought, “hey, 2 for 1”…mistake. All was well for about three weeks, long enough that when the gremlins arrived I didn’t immediately associate the new hardware. For the purposes of this discussion, gentle reader, know that I run legacy (what I affectionately refer to as, “Lazarus”) builds. Rigs that started life running Windows Vista/7, died, and that now, resurrected, run 10 and 11, and all that that implies. So, when a mouse started stuttering, of course I thought it was a gremlin in the machine, right? I spent more days than I am comfortable sharing with you pouring over processes and background apps, and registry trims…before Accam’s Razor suggested I eliminate the mouse as a variable. Changing the battery was ineffective, but when I swapped in the ooold Logitech…Yahtzee/Bingo/Booyah…smooth and precise…butter! All I needed was a new Logitech mouse.
So, if you’re here you likely are having mouse issues of your own, or you just need one that works…this is it!
😉
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Reviewed in the United States on May 13, 2026
★★★★★ 5
Nice and a great value.
Size: 1 Pack, Style: USB Receiver, Color: Swift Grey
Hey, it works well. Just plug it in and you are ready to go. Only issue, minor, no light or color coding on back to indicate on or off.
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Reviewed in the United States on May 14, 2026