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- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Sep 30 - Oct 5
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Mr. Gasket Ultra-Seal Head Gasket - 5780GOverview: Mr. Gasket Ultra Seal Head Gaskets are a five layer (graphite core perforated steel outer layers) composite construction. The graphite core has excellent thermoconductivity (transfers heat) away from hot spots in head preventing gasket burn out. They provide excellent stability, compressibility and high temperature endurance. A high temperature silicone coating ensures sealing of engine fluids. Compatible with cast iron or aluminum heads,
Overview:
Mr. Gasket Ultra-Seal Head Gaskets are a five layer (graphite core/perforated steel outer layers) composite construction. The graphite core has excellent thermoconductivity (transfers heat) away from hot spots in head preventing gasket burn-out. They provide excellent stability, compressibility and high temperature endurance. A high temperature silicone coating ensures sealing of engine fluids. Compatible with cast iron or aluminum heads, they will not brinell (indent) aluminum cylinder heads. Suitable for high performance street, drag race and oval track use. Sold individually.
Gasket Bore 3.870 inch, Compressed thickness 0.028 inch
Features:
- Five layer (graphite core/perforated steel outer layers) composite construction
- Graphite core has excellent thermo-conductivity-transfers heat away from hot spots in head preventing gasket burn-out
- Provides excellent stability, compressibility and high temperature endurance
- Coated with high temperature silicone to ensure sealing of engine fluids
- Will not brinell (indent) aluminum cylinder heads
- For high performance street, drag race and oval track use
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| 1976 - 1983 | Chevrolet | Malibu | 305/5 V8 | |
| 1976 - 1988 | Chevrolet | Monte Carlo | 305/5 V8 | |
| 1983 - 1986 | Pontiac | Bonneville | 305/5 V8 | |
| 1977 - 1992 | Pontiac | Firebird | 305/5 V8 | |
| 1976 - 1992 | Chevrolet | Camaro | 305/5 V8 | |
| 1977 - 1993 | Chevrolet | Caprice | 305/5 V8 | |
| 1980 | Chevrolet | Corvette | 305/5 V8 | |
| 1977 - 1978 | GMC | K25 | 305/5 V8 | |
| 1977 - 1978 | GMC | K25 Suburban | 305/5 V8 | |
| 1988 - 1995 | GMC | K2500 | 305/5 V8 | |
| 1987 | GMC | R1500 | 305/5 V8 | |
| 1987 | GMC | R1500 Suburban | 305/5 V8 | |
| 1987 | GMC | R2500 | 305/5 V8 | |
| 1976 - 1977 | GMC | Sprint | 305/5 V8 | |
| 1987 | GMC | V1500 | 305/5 V8 | |
| 1978 - 1980 | Oldsmobile | Cutlass | 305/5 V8 | |
| 1978 - 1980 | Oldsmobile | Cutlass Salon | 305/5 V8 | |
| 1978 - 1980 | Oldsmobile | Cutlass Calais | 305/5 V8 | |
| 1980 - 1982 | Oldsmobile | Cutlass Cruiser | 305/5 V8 | |
| 1978 - 1980 | Oldsmobile | Cutlass Supreme | 305/5 V8 | |
| 1977 - 1979 | Oldsmobile | Omega | 305/5 V8 | |
| 1977 - 1979 | Oldsmobile | Starfire | 305/5 V8 | |
| 1979 - 1995 | GMC | G1500 | 305/5 V8 | |
| 1981 - 1995 | GMC | G2500 | 305/5 V8 | |
| 1977 - 1987 | GMC | Jimmy | 305/5 V8 | |
| 1977 - 1978 | GMC | K15 | 305/5 V8 | |
| 1981 - 1995 | GMC | K1500 | 305/5 V8 | |
| 1977 - 1978 | GMC | K15 Suburban | 305/5 V8 | |
| 1979 - 1982 | GMC | K1500 Suburban | 305/5 V8 | |
| 1976 - 1979 | Chevrolet | Monza | 305/5 V8 | |
| 1980 - 1995 | GMC | C2500 | 305/5 V8 | |
| 1978 | GMC | C35 | 305/5 V8 | |
| 1986 | GMC | C3500 | 305/5 V8 | |
| 1978 - 1987 | GMC | Caballero | 305/5 V8 | |
| 1977 - 1978 | GMC | G15 | 305/5 V8 | |
| 1977 - 1995 | Chevrolet | G10 | 305/5 V8 | |
| 1976 - 1979 | Chevrolet | Nova | 305/5 V8 | |
| 1987 | Chevrolet | R10 | 305/5 V8 | |
| 1987 | Chevrolet | R10 Suburban | 305/5 V8 | |
| 1987 - 1988 | Chevrolet | R20 | 305/5 V8 | |
| 1987 | Chevrolet | V10 | 305/5 V8 | |
| 1977 - 1978 | GMC | C15 | 305/5 V8 | |
| 1979 - 1995 | GMC | C1500 | 305/5 V8 | |
| 1977 - 1978 | GMC | C15 Suburban | 305/5 V8 | |
| 1979 - 1986 | GMC | C1500 Suburban | 305/5 V8 | |
| 1977 - 1978 | GMC | C25 | 305/5 V8 | |
| 1976 - 1987 | Chevrolet | El Camino | 305/5 V8 | |
| 1978 - 1980 | Pontiac | Grand Am | 305/5 V8 | |
| 1977 - 1980 | Pontiac | Grand LeMans | 305/5 V8 | |
| 1978 - 1987 | Pontiac | Grand Prix | 305/5 V8 | |
| 1977 - 1980 | Pontiac | LeMans | 305/5 V8 | |
| 1983 - 1986 | Pontiac | Parisienne | 305/5 V8 | |
| 1977 - 1979 | Pontiac | Phoenix | 305/5 V8 | |
| 1977 | Pontiac | Ventura | 305/5 V8 | |
| 1991 | Oldsmobile | Custom Cruiser | ||
| 1992 | Oldsmobile | Custom Cruiser | 305/5 V8 | |
| 1978 - 1979 | Pontiac | Sunbird | 305/5 V8 | |
| 1977 - 1981 | Checker | Marathon | 305/5 V8 | |
| 1980 - 1995 | Chevrolet | G20 | 305/5 V8 | |
| 1978 - 1985 | Chevrolet | G30 | 305/5 V8 | |
| 1977 - 1985 | Chevrolet | Impala | 305/5 V8 | |
| 1977 - 1986 | Chevrolet | K10 | 305/5 V8 | |
| 1981 | Chevrolet | K10 | 350/5.7 V8 | |
| 1977 - 1986 | Chevrolet | K10 Suburban | 305/5 V8 | |
| 1977 - 1986 | Chevrolet | K5 Blazer | 305/5 V8 | |
| 1977 - 1986 | Chevrolet | C10 | 305/5 V8 | |
| 1977 - 1986 | Chevrolet | C10 Suburban | 305/5 V8 | |
| 1988 - 1995 | Chevrolet | K1500 | 305/5 V8 | |
| 1977 - 1985 | Chevrolet | K20 | 305/5 V8 | |
| 1977 - 1986 | Chevrolet | K20 Suburban | 305/5 V8 | |
| 1988 - 1995 | Chevrolet | K2500 | 305/5 V8 | |
| 1976 | Chevrolet | Laguna | 305/5 V8 | |
| 1977 - 1978 | GMC | C25 Suburban | 305/5 V8 | |
| 1982 - 1986 | GMC | C2500 Suburban | 305/5 V8 | |
| 1988 - 1995 | Chevrolet | C1500 | 305/5 V8 | |
| 1977 - 1986 | Chevrolet | C20 | 305/5 V8 | |
| 1977 - 1986 | Chevrolet | C20 Suburban | 305/5 V8 | |
| 1988 - 1995 | Chevrolet | C2500 | 305/5 V8 | |
| 1978 | Chevrolet | C30 | 305/5 V8 | |
| 1977 - 1980 | Buick | Century | 305/5 V8 | |
| 1978 | Buick | LeSabre | 305/5 V8 | |
| 1977 - 1980 | Buick | Regal | 305/5 V8 | |
| 1991 | Buick | Roadmaster | ||
| 1991 | Buick | Commercial Chassis | ||
| 1977 - 1979 | Buick | Skylark | 305/5 V8 | |
| 1991 - 1992 | Cadillac | Brougham | 305/5 V8 | |
| 1987 | Chevrolet | Blazer | 305/5 V8 |
Specs:
| Application | Small Block Chevy |
|---|---|
| Brand | Mr. Gasket |
| Compressed Thickness | .028 inch |
| Compression Ratio | Up to 14:1 |
| Emission Code | 5 |
| Engine | Chevrolet Small Block Gen I |
| Gasket Bore | 3.870 inch |
| Gasket Line | Ultra-Seal |
| Material | Graphite Steel |
| Packaging | Retail |
| Product Type | Head Gasket |
| Quantity Per Pkg. | 1 |
| Warranty | Limited 90 Day |
| Weight | 0.5 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
Genial
Color: White, Size: Queen(Pack of 1)
Cumplen su objetivo
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 10, 2026
★★★★★ 2
Only comes with ONE pillowcase.
Color: White, Size: Queen(Pack of 1)
Pillowcase seems nice. I didn’t read the description closely enough to see it only comes with ONE pillowcase. The photo clearly shows two, which is misleading and the item name states “pillow cases” plural, as if there are two. Then wayyyy down in the description it says pillow cases are sold individually.
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Reviewed in the United States on May 24, 2026
★★★★★ 3
Good but slides off pillow
Color: Gray, Size: Standard(Pack of 2)
Ok these are actually cooling and a decent material but they keep sleeping off my pillows and it’s so frustrating. I don’t know if it’s because my pillows and gel memory foam but I cannot keep them on for anything. Because of the price I’m going to keep them just wish they would stay on.
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Reviewed in the United States on May 25, 2026
★★★★★ 4
Soft material and feels cool for a few minutes
Color: Gray, Size: Queen(Pack of 2), Color: Gray, Size: Queen(Pack of 2)
These pillow cases are extremely soft and smooth to the touch, which feels amazing, but at the same time they do feel slippery especially when the pillows are stacked on top of one another. I noticed that when I used these pillow cases along with another set of pillows with a different material, that they would easily slide around as well. The quality of the pillowcases feel durable even though it may feel soft. I like the light grey color that I chose and since it's a queen sized pillowcase, the memory foam pillows that I have were able to fit easily.
The cooling feature on the material of these pillow cases feels really nice and makes a noticeable difference especially when the weather is starting to get warmer. Although the material will start to feel warm on contact on one side after a few minutes, it will still feel cool once I flip my pillow to the other side. Overall, I like the quality of the material since it feels soft, but for $15 it might seem overpriced.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Comfortable and stays cool
Color: White-cooling Basic, Size: Queen(Pack of 1)
Great pillow. When i opened it, i noticed a strange smell, i assumed its the smell of whatever they use to make the pillow stay cool. You have to fluff it for a good amount of time to make sure the cooling agent spreads well in the foam. Is what i assumed atleast. Its a perfect amount of softness for me. Pair it with some bamboo pillow cases and you got a good night of sleep
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Reviewed in the United States on May 9, 2026