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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.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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- To process your return/exchange, please contact us at [email protected]
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4.8 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 5
A Great Batman Story. Should be in the top Five.
Scott Snyder is an amazing writer and his grasp of the Batman lore and mythos is pretty cool. I am a Batman fan. He is without question my favorite superhero. I especially like to read Batman when he is written well and the mythos of the character are seen as assets to the narrative as opposed to a liability. Given the long history of the character and his supporting cast, there are only a handful of writers who have been able to develop the core of who the character is. Snyder does no compromise that in his work. The Batman in Black Mirror is his adopted son and protege Richard 'Dick' Grayson who was the first Robin the Boy Wonder and later Nightwing.
Grayson replaced the original Batman Bruce Wayne when he "died"
and this story takes place after Bruce makes his return from the "dead".
This story should be on the top five lists of Batman tales. It is just that good. I think Scott Snyder will go down as one of the best Batman writers ever. The story is awesome and stunning. I highly recommend you pick this up especially if you are fan of Batman. You can read this as stand alone tale but if you want some background on Dick Grayson's tenure as Batman check out
Those were written by Grant Morrison. I can't say enough about Scott Snyder. If you are a current comic book fan I highly recommend his current run on Batman. (With Bruce Wayne back as Batman). That is proving to be an awesome run.
Often in the pantheon of Batman writers we tout Frank Miller as the pinnacle because of Batman Year One. I think Scott Snyder is going to be a threat to that crown when it is all said and done. This was a great book and its worth your money. It's not typical and predictable. I appreciate a writer who honors the mythos and creates something fresh and different. 5 stars for this book. Pick up this hardcover before it is sold out. Trust me it will be.I am sure it will be issued in paperback but his hardcover will be a great collectible.
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Reviewed in the United States on November 30, 2011
★★★★★ 5
Scott Snyder and Co. knock it out of the park
Going into this book, I was pretty apprehensive. I knew that it was a story that came as a direct of result of Grant Morrison's trainwreck of an arch that included Batman RIP and I knew that it had Dick Grayson as Batman instead of actual Batman Bruce Wayne. So the build up was awful, but man, if this isn't one of the finest Batman stories ever penned.
Fair warning: this thing is BLEAK. Possibly the darkest Batman story I've ever read. The oppressive atmosphere is captured beautifully in the artwork (alternately Jock and Francavilla). It contains easily the most disturbing panel ever in a Batman comic and I'm honestly hard pressed to think of another one, period. In short, the artwork is spectacular and is the worth the price of admission alone.
However, it's the writing that will have you hooked from page one. When I first received this in the mail, I casually picked it up, expecting to flip through and read it later. As soon as I started the first page, though, I couldn't put it down until it was done. The whole thing is just so spectacular. My misgivings about Dick Grayson as Batman completely evaporated when I got further in. Dick Grayson makes an excellent Batman, and what's more, it feels like Dick Grayson being Batman is actually essential to the story. This isn't an instance where it could have just as easily been Bruce Wayne in the cowl, it HAS to be Dick Grayson.
Not only does Dick Grayson get a chance to out-Batman even Bruce Wayne, it could very well be the best James Gordon story ever written. Him struggling with his son's problems (I don't want to delve too much into the plot for fear of spoilers) can at times be genuinely heartbreaking, and adds a lot of depth to a character that's more often that not portrayed as Batman's errand boy (even more so than Robin, sometimes).
So basically I was going into this expecting a good, not great, story to tide me over until the new Scott Snyder Batman New 52 trade comes out, and instead got what is easily one of the finest Batman stories ever written. I will never doubt Scott Snyder (or Dick Grayson) ever again.
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Reviewed in the United States on February 5, 2013
★★★★★ 5
Good read / Great artwork
Format: Hardcover
Good read, cool twists. Gorgeous artwork, hardcover a great choice.
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Reviewed in the United States on January 18, 2026
★★★★★ 5
Awesome
Format: Paperback
Great addition to my collection!
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Reviewed in the United States on March 26, 2026
★★★★★ 5
great
Format: Paperback
perfect shape
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Reviewed in the United States on April 17, 2025