Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Mr. Gasket Ultra-Seal Header Gaskets - 5912Overview: Manufactured from high temperature steel core graphite faced exhaust material. Expanded steel core provides stability and maximum torque retention to eliminate gasket failure. Graphite facing provides excellent heat resistance and thermal conductivity to transfer heat away from the cylinder head. Conforms to and seals minor surface irregularities. High recovery material allows header or manifold flange to stay sealed if flange loses clamp
Overview:
Manufactured from high-temperature steel core/graphite faced exhaust material. Expanded steel core provides stability and maximum torque retention to eliminate gasket failure. Graphite facing provides excellent heat resistance and thermal conductivity to transfer heat away from the cylinder head. Conforms to and seals minor surface irregularities. High recovery material allows header or manifold flange to stay sealed if flange loses clamp-load. Can be trimmed if necessary for modified port applications. For original equipment replacement, high performance street, drag race and oval track use.
Features:
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| 1971 - 1975 | GMC | Sprint | 454/7.4 V8 | |
| 1973 - 1974 | GMC | K35/K3500 Pickup | 454/7.4 V8 | |
| 1971 - 1975 | GMC | Sprint | 402/6.6 V8 | |
| 1969 - 1970 | Chevrolet | Nova | 396/6.5 V8 | |
| 1968 - 1969 | GMC | K15/K1500 Pickup | 396/6.5 V8 | |
| 1973 - 1976 | GMC | Jimmy | 454/7.4 V8 | |
| 1968 | GMC | K15/K1500 Suburban | 396/6.5 V8 | |
| 1974 | GMC | K15/K1500 Suburban | 454/7.4 V8 | |
| 1968 - 1969 | GMC | K25/K2500 Pickup | 396/6.5 V8 | |
| 1970 - 1972 | GMC | K15/K1500 Suburban | 402/6.6 V8 | |
| 1973 - 1974 | GMC | K25/K2500 Pickup | 454/7.4 V8 | |
| 1968 | GMC | K25/K2500 Suburban | 396/6.5 V8 | |
| 1974 | GMC | K25/K2500 Suburban | 454/7.4 V8 | |
| 1968 - 1969 | GMC | K35/K3500 Pickup | 396/6.5 V8 | |
| 1970 - 1971 | GMC | K35/K3500 Pickup | 402/6.6 V8 | |
| 1968 - 1969 | Chevrolet | Bel Air | 396/6.5 V8 | |
| 1963 - 1969 | Chevrolet | Bel Air | 427/7 V8 | |
| 1970 - 1975 | Chevrolet | Bel Air | 454/7.4 V8 | |
| 1971 - 1972 | Chevrolet | Bel Air | 402/6.6 V8 | |
| 1968 - 1969 | GMC | C35/C3500 Pickup | 396/6.5 V8 | |
| 1970 - 1972 | GMC | C35/C3500 Pickup | 402/6.6 V8 | |
| 1974 | GMC | C25/C2500 Suburban | 454/7.4 V8 | |
| 1973 - 1974 | GMC | C35/C3500 Pickup | 454/7.4 V8 | |
| 1963 - 1969 | Chevrolet | Biscayne | 427/7 V8 | |
| 1968 - 1969 | Chevrolet | Biscayne | 396/6.5 V8 | |
| 1971 - 1972 | Chevrolet | Biscayne | 402/6.6 V8 | |
| 1971 - 1972 | Chevrolet | Biscayne | 454/7.4 V8 | |
| 1973 | Chevrolet | Blazer | 454/7.4 V8 | |
| 1972 | Chevrolet | Brookwood | 402/6.6 V8 | |
| 1968 - 1969 | Chevrolet | C10 Pickup | 396/6.5 V8 | |
| 1973 - 1974 | Chevrolet | C10 Pickup | 454/7.4 V8 | |
| 1968 - 1969 | Chevrolet | C10 Suburban | 396/6.5 V8 | |
| 1973 - 1980 | Chevrolet | C10 Suburban | 454/7.4 V8 | |
| 1968 - 1969 | Chevrolet | C20 Pickup | 396/6.5 V8 | |
| 1973 - 1974 | Chevrolet | C20 Pickup | 454/7.4 V8 | |
| 1968 - 1969 | Chevrolet | C20 Suburban | 396/6.5 V8 | |
| 1973 - 1986 | Chevrolet | C20 Suburban | 454/7.4 V8 | |
| 1968 - 1969 | Chevrolet | C30 Pickup | 396/6.5 V8 | |
| 1973 - 1974 | Chevrolet | C30 Pickup | 454/7.4 V8 | |
| 1968 - 1969 | Chevrolet | Camaro | 396/6.5 V8 | |
| 1970 - 1972 | Chevrolet | Camaro | 402/6.6 V8 | |
| 1966 - 1969 | Chevrolet | Caprice | 427/7 V8 | |
| 1968 - 1969 | Chevrolet | Caprice | 396/6.5 V8 | |
| 1970 - 1976 | Chevrolet | Caprice | 454/7.4 V8 | |
| 1971 - 1972 | Chevrolet | Caprice | 402/6.6 V8 | |
| 1968 - 1970 | Chevrolet | Chevelle | 396/6.5 V8 | |
| 1970 - 1973 | Chevrolet | Chevelle | 454/7.4 V8 | |
| 1968 | Chevrolet | Chevy II | 396/6.5 V8 | |
| 1966 - 1969 | Chevrolet | Corvette | 427/7 V8 | |
| 1970 - 1974 | Chevrolet | Corvette | 454/7.4 V8 | |
| 1969 | Chevrolet | El Camino | 396/6.5 V8 | |
| 1970 - 1972 | Chevrolet | El Camino | 402/6.6 V8 | |
| 1970 - 1975 | Chevrolet | El Camino | 454/7.4 V8 | |
| 1973 - 1974 | Chevrolet | G20 Van | 454/7.4 V8 | |
| 1973 - 1974 | Chevrolet | G30 Van | 454/7.4 V8 | |
| 1963 - 1969 | Chevrolet | Impala | 427/7 V8 | |
| 1968 - 1969 | Chevrolet | Impala | 396/6.5 V8 | |
| 1970 - 1976 | Chevrolet | Impala | 454/7.4 V8 | |
| 1971 - 1972 | Chevrolet | Impala | 402/6.6 V8 | |
| 1968 - 1969 | Chevrolet | K10 Pickup | 396/6.5 V8 | |
| 1968 - 1969 | Chevrolet | K10 Suburban | 396/6.5 V8 | |
| 1974 | Chevrolet | K10 Pickup | 454/7.4 V8 | |
| 1968 - 1969 | Chevrolet | K20 Pickup | 396/6.5 V8 | |
| 1973 - 1974 | Chevrolet | K20 Pickup | 454/7.4 V8 | |
| 1975 - 1986 | Chevrolet | C30 | 454/7.4 V8 | |
| 1988 - 1990 | Chevrolet | C3500 | 454/7.4 V8 | |
| 1976 | Chevrolet | G20 | 454/7.4 V8 | |
| 1975 - 1990 | Chevrolet | G30 | 454/7.4 V8 | |
| 1976 - 1980 | Chevrolet | K10 | 454/7.4 V8 | |
| 1976 - 1978 | Chevrolet | K20 | 454/7.4 V8 | |
| 1977 - 1986 | Chevrolet | K30 | 454/7.4 V8 | |
| 1988 - 1990 | Chevrolet | K3500 | 454/7.4 V8 | |
| 1973 - 1975 | Chevrolet | Laguna | 454/7.4 V8 | |
| 1973 - 1975 | Chevrolet | Malibu | 454/7.4 V8 | |
| 1970 - 1975 | Chevrolet | Monte Carlo | 454/7.4 V8 | |
| 1987 - 1988 | Chevrolet | R20 | 454/7.4 V8 | |
| 1987 - 1988 | Chevrolet | R20 Suburban | 454/7.4 V8 | |
| 1989 | Chevrolet | R2500 | 454/7.4 V8 | |
| 1968 - 1969 | Chevrolet | K30 Pickup | 396/6.5 V8 | |
| 1973 - 1974 | Chevrolet | K30 Pickup | 454/7.4 V8 | |
| 1970 - 1972 | Chevrolet | Kingswood | 454/7.4 V8 | |
| 1971 - 1972 | Chevrolet | Kingswood | 402/6.6 V8 | |
| 1970 - 1972 | Chevrolet | Monte Carlo | 402/6.6 V8 | |
| 1970 | Chevrolet | Nova | 402/6.6 V8 | |
| 1970 - 1972 | Chevrolet | Townsman | 454/7.4 V8 | |
| 1972 | Chevrolet | Townsman | 402/6.6 V8 | |
| 1968 - 1969 | GMC | C15/C1500 Pickup | 396/6.5 V8 | |
| 1970 - 1972 | GMC | C15/C1500 Pickup | 402/6.6 V8 | |
| 1973 - 1974 | GMC | C15/C1500 Pickup | 454/7.4 V8 | |
| 1968 - 1969 | GMC | C15/C1500 Suburban | 396/6.5 V8 | |
| 1970 - 1972 | GMC | C15/C1500 Suburban | 402/6.6 V8 | |
| 1973 - 1974 | GMC | C15/C1500 Suburban | 454/7.4 V8 | |
| 1968 - 1969 | GMC | C25/C2500 Pickup | 396/6.5 V8 | |
| 1970 - 1972 | GMC | C25/C2500 Pickup | 402/6.6 V8 | |
| 1973 - 1974 | GMC | C25/C2500 Pickup | 454/7.4 V8 | |
| 1968 - 1969 | GMC | C25/C2500 Suburban | 396/6.5 V8 | |
| 1970 - 1972 | GMC | C25/C2500 Suburban | 402/6.6 V8 | |
| 1970 - 1972 | Chevrolet | Chevelle | 402/6.6 V8 | |
| 1976 - 1978 | Chevrolet | K5 Blazer | 454/7.4 V8 | |
| 1975 - 1980 | Chevrolet | C10 | 454/7.4 V8 | |
| 1987 - 1990 | GMC | V3500 | 454/7.4 V8 | |
| 1990 | Chevrolet | C1500 | 454/7.4 V8 | |
| 1975 - 1986 | Chevrolet | C20 | 454/7.4 V8 | |
| 1989 - 1990 | Chevrolet | V3500 | 454/7.4 V8 | |
| 1975 - 1978 | GMC | C15 | 454/7.4 V8 | |
| 1979 - 1980 | GMC | C1500 | 454/7.4 V8 | |
| 1975 - 1978 | GMC | C15 Suburban | 454/7.4 V8 | |
| 1979 - 1980 | GMC | C1500 Suburban | 454/7.4 V8 | |
| 1975 - 1978 | GMC | C25 | 454/7.4 V8 | |
| 1979 - 1986 | GMC | C2500 | 454/7.4 V8 | |
| 1975 - 1978 | GMC | C25 Suburban | 454/7.4 V8 | |
| 1979 - 1986 | GMC | C2500 Suburban | 454/7.4 V8 | |
| 1975 - 1978 | GMC | C35 | 454/7.4 V8 | |
| 1979 - 1990 | GMC | C3500 | 454/7.4 V8 | |
| 1975 - 1976 | GMC | G25 | 454/7.4 V8 | |
| 1976 | GMC | G35 | 454/7.4 V8 | |
| 1988 - 1990 | GMC | G3500 | 454/7.4 V8 | |
| 1976 | GMC | K15 | 454/7.4 V8 | |
| 1980 | GMC | K1500 | 454/7.4 V8 | |
| 1976 - 1978 | GMC | K25 | 454/7.4 V8 | |
| 1976 - 1977 | GMC | K25 Suburban | 454/7.4 V8 | |
| 1979 - 1990 | GMC | K3500 | 454/7.4 V8 | |
| 1987 - 1989 | GMC | R2500 | 454/7.4 V8 | |
| 1987 - 1990 | GMC | R2500 Suburban | 454/7.4 V8 | |
| 1987 - 1990 | GMC | R3500 | 454/7.4 V8 | |
| 1989 - 1990 | Chevrolet | R2500 Suburban | 454/7.4 V8 | |
| 1987 - 1988 | Chevrolet | R30 | 454/7.4 V8 | |
| 1989 - 1990 | Chevrolet | R3500 | 454/7.4 V8 | |
| 1987 - 1988 | Chevrolet | V30 | 454/7.4 V8 |
Specs:
| Brand | Mr. Gasket |
|---|---|
| Collector Gaskets Included | No |
| Emission Code | 5 |
| Engine | Chevrolet Big Block Mark IV |
| Gasket Line | Ultra-Seal |
| Material | Ultra-seal |
| Port Shape | Round |
| Port Size | 2.15" |
| Product Type | Header Gaskets |
| Thickness | .062" |
| Warranty | Limited 90 Day Warranty |
| Weight | 0.38 |
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
4.4 ★★★★★
Based on 2218 reviews
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Product Reviews
★★★★★ 5
Excellent pillows that are worth the cost
Size: Queen / Standard, Color: White
These are wonderful. Completely relieved my back pain the first night I slept on them -– I put one underneath my back as I slept, and a weeklong terrible pain vanished overnight. Felt like sleeping on a cloud. As others have noted, they are neither too soft nor too firm…they’re really just right, and I think would make great guest room pillows since everyone would like them. These were definitely worth the money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2026
★★★★★ 5
Great , fluffy pillows
Size: Queen / Standard, Color: White
They came compressed into a small roll so I was wondering how they would do. BUT they fluffed up to incredible size and comfy feel. I am impressed so far!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
★★★★★ 5
Pillow comfort and quality
Size: Queen / Standard, Color: White
Bought this for my husband. He is very happy with it. It is well constructed. He doesn’t like too firm or too soft. It meets those requirements. Very reasonably priced. I have bought very expensive pillows that aren’t even comfortable!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
★★★★★ 4
Pretty good.
Size: Queen / Standard, Color: White
Me and my fiancé have been going through a lot of pillows, trying to find the right ones. We go to this local hotel to unwind and use the whirlpool sometimes. Their pillows are immaculate. So I starting looking at “Hotel Pillows”. These are not the same as the hotel pillows, not even close tbh, but they are the best ones I’ve bought so far. They are comfy from day one. I was worried when opening the box and seeing that they had the same cover on them as others I bought before, but they were not the same. Pretty comfortable, and less neck pain than any of the other ones. My house is like the house of pillows and I am finally going to start getting rid of the old ones. Maybe we’ll find some down pillows to put on our registry, but until then, these are staying on my bed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
★★★★★ 5
Just perfect. Well made, No Issues Just one perfect sleep zzzzzzzzzzz😴
Color: White, Size: Queen (Pack of 2)
I had down pillows, and foam pillows, and other synthetic pillows etc and some were ok and others were not. I cannot get a great nights sleep if I am constantly having to adjust my pillow during the night. I ordered these pillows as I sleep on my side mostly but sometimes on my back. When they arrived I followed the directions (as they are in a vacuum pack) and only takes a few minutes for them to acclimate. Then put pillow cases on them and off to bed. I had the BEST sleep I have had in YEARS !!!!! The pillows are great. They keep your head comfortable and cool (No Sweating) and super comfortable. The only issue is after a perfect nights sleep, I find I really do not want to get out of bed in the morning..One great thing, is I am retired so I really do not have to get up out of bed until I want to 😴😳. The pillows are well made and feel like expensive down filled pillows but softer. I am VERY satisfied with the pillows. I just wish I would have found these pillows years ago. But now I have them and the perfect sleep that they provide. Dr Dave
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 4, 2026
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