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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.
- 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 29 reviews
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Product Reviews
★★★★★ 5
Secrets, Seduction, and Rockstars!
Format: Kindle
Rockstars, secrets, and off-the-charts chemistry? Sign me up!
Cinder Blaze takes us on a rollercoaster of passion and peril with Knot Their Omega. Blair Vesper, a secret Omega masquerading as an Alpha, strikes a risky deal to tour with Blooming Salvation, a band teetering on the edge of chaos. Enter Icarus Morrigan, the enigmatic manager, and his three complicated and irresistibly sexy rockstars: wild Kenji, icy Kaiser, and fiery Nathaniel.
This book delivers steamy Omegaverse drama, sizzling slow-burn romance, and just the right dash of angst. The tension between Blair and the band crackles like electricity onstage, while the societal stakes add depth to the spicy dynamics.
Short, sharp, and oh-so-sinful Knot Their Omega will have you hooked from the first note!
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Reviewed in the United States on December 9, 2024
★★★★★ 5
Wow.
Format: Kindle
Okay I’m usually not one for stand-alone’s I’m an avid series reader but my goodness am I so happy I read this! This story was brilliant & so absolutely mesmerizing. I loved reading about each character and their struggles as well as what helped them to move forward. The ending definitely brought tears to my eyes so hard. I truly wasn’t expecting some of what happened in this story. There is about to be a spoiler I am going to reveal so please stop reading if you don’t want the spoiler !!!! ⚠️ ⛔️ ‼️
I loved that the author didn’t do what most authors do with irredeemable male characters. I truly was hoping that Nate Jr. would be apart of the pack after the way he treated Astrea bc he truly didn’t deserve it. Though I must say you did a wonderful job or redeeming him as a person. I cried my eyes out when he walked into the story. I was truly terrified he was going to be a bad guy to the end. However you truly did him such a justice by having him realize his faults & having him redeem himself in the most wonderful way. I’m so sad that he didn’t get to hear how much his brother loved him & forgave him before dying. But again you wrote that ending so beautifully & I just can’t express how much I loved this story & how you took a different route than most authors I have read have. You are a remarkable author Cinder Blaze & I thank you generously for creating such a masterpiece.
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Reviewed in the United States on April 28, 2025
★★★★★ 4
Omegaverse
Format: Kindle
I was pleasantly surprised by this omega verse book. This 1 definitely had a few new twists And I really enjoyed reading it. The main female character was a badass and awesome. She had 1 best friend I wish we could have seen a little bit more of their friendship in this book. Her relationship with the male characters was good not to contrived or super instantaneous. And we had some fun plot twists that I didn't expect. I wish we had more of a follow up on the situation with her family her background and her mother who was a wench. I would definitely recommend this book.
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Reviewed in the United States on April 9, 2025
★★★★★ 5
Wow. Just wow. An amazing read
Format: Kindle
This book was eloquently written, or should I say the authors writing style is very eloquent? I loved the characters, and the story was quite compelling. I absolutely loved the FMC, she's a BA who doesn't take any crap & gives as good as she gets. A certain person certainly got his just desserts & then some, the earlier scenes of which were quite satisfying, had me punching the air & everything haha. All in all 20/10, great read
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Reviewed in the United States on November 29, 2024
★★★★★ 3
My opinion
Format: Kindle
Let me preface this by saying I really liked the story and the characters however, this book is in desperate need of some sort of editing. It's not misspelled words or formatting, but continuous run on sentences. Redundancies within the sentences. There were a couple of paragraphs that I had to go back and reread 3 or 4 times. Overall, I'd say it was worth the read.
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Reviewed in the United States on May 29, 2025