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Description
Mr. Gasket Ultra-Seal Header Gaskets - 5921Overview: 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 |
|---|---|---|---|---|
| 1967 - 1978 | Pontiac | Bonneville | 400/6.6 V8 | |
| 1967 | Pontiac | Catalina | 428/7 V8 | |
| 1965 - 1969 | Pontiac | Catalina | ||
| 1970 - 1978 | Pontiac | Catalina | 400/6.6 V8 | |
| 1970 - 1976 | Pontiac | Catalina | 455/7.5 V8 | |
| 1965 - 1970 | Pontiac | Bonneville | ||
| 1966 | Pontiac | Bonneville | 421/6.9 V8 | |
| 1971 - 1976 | Pontiac | Bonneville | 455/7.5 V8 | |
| 1967 | Pontiac | Firebird | 326/5.3 V8 | |
| 1968 - 1977 | Pontiac | Firebird | 350/5.7 V8 | |
| 1971 - 1976 | Pontiac | Firebird | 455/7.5 V8 | |
| 1970 - 1977 | Pontiac | Catalina | 350/5.7 V8 | |
| 1968 - 1979 | Pontiac | Firebird | 400/6.6 V8 | |
| 1977 | Pontiac | Bonneville | 350/5.7 V8 | |
| 1973 - 1975 | Pontiac | Grand Am | 400/6.6 V8 | |
| 1965 - 1970 | Pontiac | Grand Prix | ||
| 1966 | Pontiac | Grand Prix | 389/6.4 V8 | |
| 1967 - 1977 | Pontiac | Grand Prix | 400/6.6 V8 | |
| 1967 | Pontiac | Grand Prix | 428/7 V8 | |
| 1971 - 1976 | Pontiac | Grand Prix | 455/7.5 V8 | |
| 1971 - 1978 | Pontiac | Grand Safari | 400/6.6 V8 | |
| 1971 - 1976 | Pontiac | Grand Safari | 455/7.5 V8 | |
| 1973 - 1975 | Pontiac | Grand Am | 455/7.5 V8 | |
| 1973 - 1975 | Pontiac | Grand Am | 350/5.7 V8 | |
| 1972 - 1975 | Pontiac | Grandville | 455/7.5 V8 | |
| 1973 - 1975 | Pontiac | Grandville | 400/6.6 V8 | |
| 1965 - 1970 | Pontiac | GTO | ||
| 1966 | Pontiac | Grand Prix | 421/6.9 V8 | |
| 1971 - 1973 | Pontiac | GTO | 400/6.6 V8 | |
| 1971 - 1973 | Pontiac | GTO | 455/7.5 V8 | |
| 1965 - 1967 | Pontiac | LeMans | 326/5.3 V8 | |
| 1968 - 1977 | Pontiac | LeMans | 350/5.7 V8 | |
| 1968 - 1977 | Pontiac | LeMans | 400/6.6 V8 | |
| 1970 - 1976 | Pontiac | LeMans | 455/7.5 V8 | |
| 1971 | Pontiac | Grandville | ||
| 1966 | Pontiac | Star Chief | 389/6.4 V8 | |
| 1965 | Pontiac | Star Chief | ||
| 1966 | Pontiac | Star Chief | 421/6.9 V8 | |
| 1972 - 1976 | Pontiac | Ventura | 350/5.7 V8 | |
| 1965 - 1967 | Pontiac | Tempest | 326/5.3 V8 | |
| 1967 | Pontiac | Executive | ||
| 1968 - 1970 | Pontiac | Executive | 400/6.6 V8 | |
| 1968 - 1970 | Pontiac | Tempest | 350/5.7 V8 | |
| 1968 - 1969 | Pontiac | Executive | 428/7 V8 | |
| 1968 - 1970 | Pontiac | Tempest | 400/6.6 V8 | |
| 1970 | Pontiac | Executive | 455/7.5 V8 | |
| 1975 - 1977 | Pontiac | Grand LeMans | 350/5.7 V8 | |
| 1975 - 1976 | Pontiac | Grand LeMans | 455/7.5 V8 | |
| 1975 - 1977 | Pontiac | Grand LeMans | 400/6.6 V8 | |
| 1976 - 1977 | Pontiac | Grand Prix | 350/5.7 V8 | |
| 1966 | Pontiac | Bonneville | 389/6.4 V8 | |
| 1967 | Pontiac | Bonneville | 428/7 V8 |
Specs:
| Brand | Mr. Gasket |
|---|---|
| Collector Gaskets Included | No |
| Emission Code | 5 |
| Engine | Pontiac V8 |
| Gasket Line | Ultra-Seal |
| Material | Ultra-seal |
| Port Shape | Oval / D |
| Port Size | 1.46" x 1.93" |
| Product Type | Header Gaskets |
| Thickness | .062" |
| Warning | California Proposition 65 |
| 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:
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- 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
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★★★★★ 5
Easy storage, good holding power
This industrial pipe shelving system is a very nice way to add DIY storage to any room. The parts come well protected and are easy to assemble. They come with all the hardware one needs to install, though I used my own wall anchors because I like the ones I use and I know they work very well. I also decided in the end not to use the support legs because they would have had the shelves too low when mounted from the ceiling. Instead, I took those off and flipped the frames over so nothing would get in there, and I'll probably get nipples and caps from the hardware store to finish off the bottoms.
The frames are finished in black, and resemble old galvanized gas pipes. As previously mentioned, assembly is easy enough and they accommodate whatever width of shelf you want to put up, within a reasonable limit. I used 36" shelves because that's the space I had to work with. The fact that each flange has three screws, assuming this is installed correctly, it should be rock-solid. I know mine is. I installed this in our laundry room / craft room in order to get more storage space, because it is so very busy in there.
Given one could purchase the parts needed to build one of these for less, it's still a good value for the money because then after you buy those parts you have to clean and paint them, as well as prepare the boards. All I had to do was assemble these, and then prepare the boards, which made my life easier and the time saved was well worth the little extra. They also look fantastic with natural-colored oiled pine. I recommend these racks for their aesthetic, ascetic appearance, and their ability to hold a good amount of weight and storage, and not to mention if they're installed like mine, they will hold rolled leather hides like nobody's business.
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Reviewed in the United States on January 12, 2026
★★★★★ 5
Impressive
Format: Paperback
I’m really impressed with this book. It’s the perfect complement to the review course. It's been incredibly helpful in tying together complex concepts that are often difficult to master. I’ve already noticed a major improvement in my understanding and confidence. Highly recommend it for anyone preparing for advanced certification exams.
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Reviewed in the United States on October 21, 2025
★★★★★ 5
Good book
Format: Paperback
Helps understand the material more
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Reviewed in the United States on April 16, 2025
★★★★★ 5
Helpful
Format: Paperback
This study guide has been helpful along with the book. It’s another useful study tool for tests. Recommend for nursing students
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Reviewed in the United States on December 29, 2023
★★★★★ 5
Great
Format: Paperback
Great
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Reviewed in the United States on October 26, 2024