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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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Description
Mr. Gasket 5877 - Ultra-Seal Valve Cover Gaskets - Fits 59-80 Chrysler 361,383,400,413,426,440 B/RB Big Block except 426 HemiOverview: Ultra Seal is Mr. Gasket premium valve cover gasket material. It's manufactured from a high density cork and rubber blend with a black latex coat applied to the outside to help seal minor flange irregularites and eliminate oil leakage. It creates a positive seal by controlled swelling of the gasket material when exposed to hot oil. For original equipment replacement, high performance street, drag race and oval track use. Sold as a pair,
Overview:
Ultra-Seal is Mr. Gasket premium valve cover gasket material. It's manufactured from a high density cork and rubber blend with a black latex coat applied to the outside to help seal minor flange irregularites and eliminate oil leakage. It creates a positive seal by controlled swelling of the gasket material when exposed to hot oil. For original equipment replacement, high performance street, drag race and oval track use. Sold as a pair, these gaskets are .187 inch thick.
Features:
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| 1960 - 1970 | Plymouth | Belvedere | 383/6.3 V8 | |
| 1960 - 1964 | Plymouth | Fury | 361/5.9 V8 | |
| 1963 - 1967 | Plymouth | Belvedere | 426/7 V8 | |
| 1966 - 1967 | Plymouth | Belvedere | 440/7.2 V8 | |
| 1963 - 1966 | Plymouth | Fury | 426/7 V8 | |
| 1960 - 1971 | Plymouth | Fury | 383/6.3 V8 | |
| 1970 - 1971 | Plymouth | Cuda | 383/6.3 V8 | |
| 1970 - 1971 | Plymouth | Cuda | 440/7.2 V8 | |
| 1968 - 1978 | Plymouth | Fury | 440/7.2 V8 | |
| 1960 - 1963 | Plymouth | Fleet Special | 383/6.3 V8 | |
| 1972 - 1978 | Plymouth | Fury | 400/6.6 V8 | |
| 1960 - 1963 | Plymouth | Fleet Special | 361/5.9 V8 | |
| 1968 - 1971 | Plymouth | Fury I | 383/6.3 V8 | |
| 1968 - 1973 | Plymouth | Fury I | 440/7.2 V8 | |
| 1972 - 1974 | Plymouth | Fury I | 400/6.6 V8 | |
| 1963 - 1964 | Dodge | 330 | 426/7 V8 | |
| 1963 - 1964 | Dodge | 440 | 426/7 V8 | |
| 1968 - 1974 | Dodge | Charger | 440/7.2 V8 | |
| 1964 | Dodge | 440 | 383/6.3 V8 | |
| 1963 - 1964 | Dodge | 880 | 361/5.9 V8 | |
| 1972 - 1978 | Dodge | Charger | 400/6.6 V8 | |
| 1959 | Dodge | Coronet | 361/5.9 V8 | |
| 1974 | Dodge | B100 Van | 440/7.2 V8 | |
| 1965 - 1967 | Dodge | Coronet | 426/7 V8 | |
| 1971 - 1974 | Dodge | B200 Van | 400/6.6 V8 | |
| 1959 - 1971 | Dodge | Coronet | 383/6.3 V8 | |
| 1968 - 1976 | Dodge | Coronet | 440/7.2 V8 | |
| 1970 - 1971 | Dodge | Challenger | 440/7.2 V8 | |
| 1972 - 1976 | Dodge | Coronet | 400/6.6 V8 | |
| 1971 - 1974 | Dodge | D100 Pickup | 400/6.6 V8 | |
| 1968 - 1971 | Dodge | D100 Pickup | 383/6.3 V8 | |
| 1973 - 1974 | Dodge | D100 Pickup | 440/7.2 V8 | |
| 1967 | Dodge | D100 Series | 383/6.3 V8 | |
| 1968 - 1971 | Dodge | D200 Pickup | 383/6.3 V8 | |
| 1971 - 1974 | Dodge | D200 Pickup | 400/6.6 V8 | |
| 1967 | Dodge | D200 Series | 383/6.3 V8 | |
| 1968 - 1971 | Dodge | D300 Pickup | 383/6.3 V8 | |
| 1971 - 1974 | Dodge | D300 Pickup | 400/6.6 V8 | |
| 1975 - 1978 | Dodge | D300 | 440/7.2 V8 | |
| 1976 - 1978 | Dodge | D300 | 400/6.6 V8 | |
| 1978 | Dodge | D450 | 440/7.2 V8 | |
| 1972 - 1978 | Dodge | Monaco | 400/6.6 V8 | |
| 1966 - 1978 | Dodge | Monaco | 440/7.2 V8 | |
| 1978 | Dodge | Magnum | 400/6.6 V8 | |
| 1977 - 1978 | Dodge | Ramcharger | 400/6.6 V8 | |
| 1974 - 1978 | Dodge | Ramcharger | 440/7.2 V8 | |
| 1975 - 1977 | Dodge | Royal Monaco | 400/6.6 V8 | |
| 1975 - 1977 | Dodge | Royal Monaco | 440/7.2 V8 | |
| 1975 - 1977 | Dodge | W100 | 400/6.6 V8 | |
| 1977 - 1978 | Dodge | W150 | 400/6.6 V8 | |
| 1975 - 1977 | Dodge | W100 | 440/7.2 V8 | |
| 1976 - 1978 | Dodge | W200 | 400/6.6 V8 | |
| 1978 | Dodge | W150 | 440/7.2 V8 | |
| 1975 - 1978 | Dodge | W200 | 440/7.2 V8 | |
| 1975 - 1978 | Dodge | W300 | 440/7.2 V8 | |
| 1976 - 1978 | Dodge | W300 | 400/6.6 V8 | |
| 1972 - 1977 | Plymouth | Gran Fury | 400/6.6 V8 | |
| 1972 - 1977 | Plymouth | Gran Fury | 440/7.2 V8 | |
| 1976 - 1978 | Plymouth | PB200 | 400/6.6 V8 | |
| 1976 - 1978 | Plymouth | PB200 | 440/7.2 V8 | |
| 1976 - 1978 | Plymouth | PB300 | 400/6.6 V8 | |
| 1976 - 1978 | Plymouth | PB300 | 440/7.2 V8 | |
| 1972 - 1975 | Plymouth | Road Runner | 400/6.6 V8 | |
| 1962 - 1966 | Chrysler | 300 | 383/6.3 V8 | |
| 1959 - 1965 | Chrysler | 300 | 413/6.8 V8 | |
| 1963 | Chrysler | 300 | 426/7 V8 | |
| 1964 - 1965 | Dodge | 880 | 426/7 V8 | |
| 1966 | Chrysler | 300 | 440/7.2 V8 | |
| 1963 - 1965 | Dodge | 880 | 383/6.3 V8 | |
| 1967 - 1971 | Chrysler | 300 | ||
| 1968 - 1971 | Plymouth | Barracuda | 383/6.3 V8 | |
| 1960 - 1966 | Plymouth | Belvedere | 361/5.9 V8 | |
| 1961 - 1962 | Plymouth | Belvedere | 413/6.7 V8 | |
| 1963 | Plymouth | Fleet Special | 426/7 V8 | |
| 1965 - 1971 | Plymouth | Fury II | 383/6.3 V8 | |
| 1965 | Plymouth | Fury II | 426/7 V8 | |
| 1965 - 1971 | Plymouth | Fury III | 383/6.3 V8 | |
| 1959 - 1960 | Chrysler | Saratoga | ||
| 1959 - 1961 | Dodge | Custom | 361/5.9 V8 | |
| 1960 - 1961 | Plymouth | Custom | 361/5.9 V8 | |
| 1960 - 1961 | Plymouth | Custom | 383/6.3 V8 | |
| 1962 | Dodge | 880 | ||
| 1977 - 1978 | Plymouth | Trailduster | 400/6.6 V8 | |
| 1974 - 1978 | Plymouth | Trailduster | 440/7.2 V8 | |
| 1959 - 1975 | Chrysler | Imperial | ||
| 1959 - 1974 | Chrysler | New Yorker | ||
| 1968 - 1978 | Chrysler | New Yorker | 440/7.2 V8 | |
| 1959 - 1964 | Chrysler | Newport | ||
| 1965 - 1971 | Chrysler | Newport | 383/6.3 V8 | |
| 1966 - 1978 | Chrysler | Newport | 440/7.2 V8 | |
| 1972 - 1978 | Chrysler | Newport | 400/6.6 V8 | |
| 1959 - 1965 | Chrysler | Town & Country | ||
| 1963 | Chrysler | Town & Country | 361/5.9 V8 | |
| 1963 - 1971 | Chrysler | Town & Country | 383/6.3 V8 | |
| 1968 - 1977 | Chrysler | Town & Country | 440/7.2 V8 | |
| 1963 | Chrysler | New Yorker | 413/6.7 V8 | |
| 1963 | Chrysler | New Yorker | 426/7 V8 | |
| 1972 - 1977 | Chrysler | Town & Country | 400/6.6 V8 | |
| 1972 - 1978 | Chrysler | New Yorker | 400/6.6 V8 | |
| 1961 - 1963 | Chrysler | Newport | 361/5.9 V8 | |
| 1963 | Chrysler | Newport | 413/6.7 V8 | |
| 1963 | Chrysler | Newport | 426/7 V8 | |
| 1974 | Dodge | B200 Van | 440/7.2 V8 | |
| 1970 - 1971 | Dodge | Challenger | 383/6.3 V8 | |
| 1963 | Chrysler | Town & Country | 413/6.7 V8 | |
| 1963 | Chrysler | Town & Country | 426/7 V8 | |
| 1968 - 1971 | Dodge | Charger | 383/6.3 V8 | |
| 1960 - 1971 | Dodge | Polara | 383/6.3 V8 | |
| 1968 - 1971 | Dodge | W300 Pickup | 383/6.3 V8 | |
| 1963 - 1965 | Dodge | Polara | 426/7 V8 | |
| 1966 - 1973 | Dodge | Polara | 440/7.2 V8 | |
| 1972 - 1973 | Dodge | Polara | 400/6.6 V8 | |
| 1968 - 1971 | Dodge | W100 Pickup | 383/6.3 V8 | |
| 1971 - 1974 | Dodge | W100 Pickup | 400/6.6 V8 | |
| 1974 | Dodge | W100 Pickup | 440/7.2 V8 | |
| 1967 | Dodge | W100 Series | 383/6.3 V8 | |
| 1971 - 1974 | Dodge | W200 Pickup | 400/6.6 V8 | |
| 1967 | Dodge | W200 Series | 383/6.3 V8 | |
| 1964 | Plymouth | Barracuda | 361/5.9 V8 | |
| 1965 - 1971 | Plymouth | Satellite | 383/6.3 V8 | |
| 1965 - 1967 | Plymouth | Satellite | 426/7 V8 | |
| 1960 - 1961 | Plymouth | Sport Wagon | 361/5.9 V8 | |
| 1966 - 1974 | Plymouth | Satellite | 440/7.2 V8 | |
| 1960 - 1961 | Plymouth | Suburban | 383/6.3 V8 | |
| 1960 - 1961 | Plymouth | Suburban | 361/5.9 V8 | |
| 1970 | Plymouth | Superbird | 440/7.2 V8 | |
| 1972 - 1974 | Plymouth | Satellite | 400/6.6 V8 | |
| 1960 - 1964 | Plymouth | Savoy | 383/6.3 V8 | |
| 1967 | Plymouth | VIP | 440/7.2 V8 | |
| 1960 - 1964 | Plymouth | Savoy | 361/5.9 V8 | |
| 1960 - 1961 | Plymouth | Sport Wagon | 383/6.3 V8 | |
| 1967 | Plymouth | VIP | 383/6.3 V8 | |
| 1965 - 1967 | Plymouth | Belvedere II | 426/7 V8 | |
| 1966 | Plymouth | Belvedere II | 361/5.9 V8 | |
| 1965 | Plymouth | Fury III | 426/7 V8 | |
| 1965 - 1967 | Plymouth | Belvedere II | 383/6.3 V8 | |
| 1967 | Plymouth | Belvedere II | 440/7.2 V8 | |
| 1975 - 1978 | Chrysler | Cordoba | 400/6.6 V8 | |
| 1967 - 1971 | Plymouth | GTX | 440/7.2 V8 | |
| 1968 - 1974 | Plymouth | Fury III | 440/7.2 V8 | |
| 1972 - 1974 | Plymouth | Fury III | 400/6.6 V8 | |
| 1969 - 1974 | Plymouth | Road Runner | 440/7.2 V8 | |
| 1968 - 1971 | Plymouth | Road Runner | 383/6.3 V8 | |
| 1968 | Plymouth | GTX | 383/6.3 V8 | |
| 1961 | Plymouth | Savoy | 413/6.8 V8 | |
| 1963 - 1964 | Plymouth | Savoy | 426/7 V8 | |
| 1964 | Dodge | 330 | 383/6.3 V8 | |
| 1960 | Dodge | Matador | 383/6.3 V8 | |
| 1968 - 1971 | Dodge | Monaco | 383/6.3 V8 | |
| 1973 - 1974 | Dodge | D200 Pickup | 440/7.2 V8 | |
| 1960 - 1968 | Dodge | Dart | 383/6.3 V8 | |
| 1960 - 1962 | Dodge | Dart | 361/5.9 V8 | |
| 1968 - 1974 | Plymouth | Fury II | 440/7.2 V8 | |
| 1972 - 1974 | Plymouth | Fury II | 400/6.6 V8 | |
| 1967 | Plymouth | GTX | 426/7 V8 | |
| 1960 - 1962 | Dodge | Polara | 361/5.9 V8 | |
| 1973 - 1974 | Dodge | D300 Pickup | 440/7.2 V8 | |
| 1967 | Dodge | D300 Series | 383/6.3 V8 | |
| 1974 | Dodge | M300 | 440/7.2 V8 | |
| 1974 | Dodge | M350 | 440/7.2 V8 | |
| 1960 | Dodge | Matador | 361/5.9 V8 | |
| 1965 | Dodge | Monaco | 426/7 V8 | |
| 1969 - 1971 | Dodge | W200 Pickup | 383/6.3 V8 | |
| 1974 | Dodge | W200 Pickup | 440/7.2 V8 | |
| 1975 - 1978 | Dodge | B200 | 440/7.2 V8 | |
| 1976 - 1978 | Dodge | B200 | 400/6.6 V8 | |
| 1975 - 1978 | Dodge | B300 | 440/7.2 V8 | |
| 1976 - 1978 | Dodge | B300 | 400/6.6 V8 | |
| 1976 - 1978 | Dodge | CB300 | 400/6.6 V8 | |
| 1977 - 1978 | Dodge | CB300 | 440/7.2 V8 | |
| 1975 - 1978 | Dodge | D100 | 440/7.2 V8 | |
| 1976 - 1978 | Dodge | D100 | 400/6.6 V8 | |
| 1977 - 1978 | Dodge | D150 | 400/6.6 V8 | |
| 1978 | Dodge | D150 | 440/7.2 V8 | |
| 1975 - 1978 | Dodge | D200 | 400/6.6 V8 | |
| 1975 - 1978 | Dodge | D200 | 440/7.2 V8 | |
| 1978 | Dodge | D400 | 440/7.2 V8 |
Specs:
| Application | Big Block Chrysler |
|---|---|
| Brand | Mr. Gasket |
| Emission Code | 5 |
| Engine | Chrysler Big Block B/RB |
| Packaging | Retail - Skin Pack |
| Product Type | Valve Cover Gaskets |
| Valve Cover Gasket Material | Ultra Seal |
| Valve Cover Gasket Thickness | .187" |
| Warranty | Limited 90 Day |
| Weight | 0.45 |
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
4.8 ★★★★★
Based on 202 reviews
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Product Reviews
★★★★★ 5
oh wow
Format: Kindle
I just knew there was something about Cooper! I’m wondering if he’s about to be included but damn I’m glad he’s at least not a rapist and creepy guy, he just got called on assignment and had to go! This should be interesting! She’s gonna run and then what’s his face is gonna grab her. I’m worried! Wow that was a great book and cliffhanger! Loving this!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 27, 2025
★★★★★ 5
ABSOLUTELY A MUST for Omegaverse Girls!!!
I ABSOLUTELY LOVE Jillian West and her books!!! I’m so happy I already bought book two and now I have to buy the others for the Assurance Security series!!
Not gonna lie Val kind of annoyed me at the beginning but she grew on me!! Her men are chef’s kisses!!! Holt annoys me some but I can let it slide. I already bought part two so I’m going to be reading that in between work phone calls!!!! DON’T TELL MY BOSS 😂😂😂😂
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 30, 2025
★★★★★ 4
Baby bumps and bodyguards
Format: Kindle
Dark, emotional, and unexpectedly tender, Not Ready is an omegaverse romance that delivers found family feels, fierce protectiveness, and a very pregnant heroine who refuses to break. Vale’s on the run from a stalker, but lands in the arms of three private security alphas, cue the swoony tension, fake marriage twist, and slow-burn heat.
It’s a little gritty, a little soft, and a whole lot addictive. If you love protective alphas, high stakes, and heroines with quiet strength, this one’s a must-read.
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Reviewed in the United States on December 18, 2025
★★★★★ 5
Strong Omegaverse Comfort and a Attention Grabbing Plot
Format: Kindle
Jillian West never misses when it comes to Omegaverse, and Not Ready is no exception. This story was the perfect blend of cozy comfort and emotional depth while still delivering a strong plot.
Vale is such a powerful heroine, she is strong, capable, and determined but I love that she still allows her pack to love and take care of her. It’s that balance of independence and vulnerability that makes her so relatable.
The relationship dynamics were amazing: Bishop is steadfast and completely head over heels, Mercy is skeptical but protective in his own way, and Holt is the hesitant one whose slow fall is so satisfying to watch unfold.
The romance hits that sweet spot between insta-love and cautious build, keeping me hooked the entire way through. And that ending. Oh my god, the cliffhanger! I need the next book in this duet immediately.
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Reviewed in the United States on August 28, 2025
★★★★★ 5
Interesting
Format: Kindle
So I will say I enjoyed the story, for sure had its moments where it dragged but it was a great story. I really liked that omegas picked their alphas/make the pack. Normally the Alphas make it and the omega fits in with them which is great but I enjoyed this new version where all the power basically went to the omega. It was a nice change of pace. I can admit some of the weird bedroom stuff with her being pregnant was odd, it’s really not hard to do stuff when pregnant (I know I’ve had two and it’s normal and even encouraged at the end especially if you want the baby out). But I like the story as a whole and will read the second, I do hope the next one isn’t dragged bc it stopped being action or tense after she met her alphas and I don’t think it was brought up or properly done when they tried to do it. More sweet after she left.
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Reviewed in the United States on November 11, 2024