Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Mr. Gasket Rear Main Seal - 1968Overview: This Mr. Gasket Rear Main Seal is made from silicone to allow the seal to handle extreme engine oil temperature. It also provides for an upgrade for that leaky rope style seal and is a direct replacement for a rubber main seal. It's also injection molded for a precise fit. Features: Application: Year Make Model Submodel Engine Size 1968 1974 Plymouth Fury II 440 7. 2 V8 1972 1978 Plymouth Fury 400 6. 6 V8 1968 1978 Plymouth Fury 440 7. 2 V8
Overview:
This Mr. Gasket Rear Main Seal is made from silicone to allow the seal to handle extreme engine oil temperature. It also provides for an upgrade for that leaky rope style seal and is a direct replacement for a rubber main seal. It's also injection molded for a precise fit.
Features:
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| 1968 - 1974 | Plymouth | Fury II | 440/7.2 V8 | |
| 1972 - 1978 | Plymouth | Fury | 400/6.6 V8 | |
| 1968 - 1978 | Plymouth | Fury | 440/7.2 V8 | |
| 1972 - 1974 | Plymouth | Fury II | 400/6.6 V8 | |
| 1968 - 1973 | Plymouth | Fury I | 440/7.2 V8 | |
| 1972 - 1974 | Dodge | D100 Pickup | 400/6.6 V8 | |
| 1968 - 1971 | Dodge | Charger | 426/7 V8 | |
| 1968 - 1974 | Dodge | Charger | 440/7.2 V8 | |
| 1972 - 1978 | Dodge | Charger | 400/6.6 V8 | |
| 1972 - 1974 | Dodge | D200 Pickup | 400/6.6 V8 | |
| 1965 - 1971 | Dodge | Coronet | 426/7 V8 | |
| 1973 - 1974 | Dodge | D200 Pickup | 440/7.2 V8 | |
| 1968 - 1976 | Dodge | Coronet | 440/7.2 V8 | |
| 1972 - 1976 | Dodge | Coronet | 400/6.6 V8 | |
| 1972 - 1974 | Dodge | D300 Pickup | 400/6.6 V8 | |
| 1973 - 1974 | Dodge | D300 Pickup | 440/7.2 V8 | |
| 1973 - 1974 | Dodge | D100 Pickup | 440/7.2 V8 | |
| 1974 | Dodge | M300 | 440/7.2 V8 | |
| 1974 | Dodge | M350 | 440/7.2 V8 | |
| 1966 - 1978 | Dodge | Monaco | 440/7.2 V8 | |
| 1972 - 1978 | Dodge | Monaco | 400/6.6 V8 | |
| 1966 - 1973 | Dodge | Polara | 440/7.2 V8 | |
| 1972 - 1973 | Dodge | Polara | 400/6.6 V8 | |
| 1974 - 1978 | Dodge | Ramcharger | 440/7.2 V8 | |
| 1974 | Dodge | W100 Pickup | 400/6.6 V8 | |
| 1974 | Dodge | W100 Pickup | 440/7.2 V8 | |
| 1965 | Dodge | Monaco | 426/7 V8 | |
| 1963 - 1965 | Dodge | Polara | 426/7 V8 | |
| 1974 | Dodge | W200 Pickup | 400/6.6 V8 | |
| 1974 | Dodge | W200 Pickup | 440/7.2 V8 | |
| 1963 - 1967 | Plymouth | Belvedere | 426/7 V8 | |
| 1966 - 1967 | Plymouth | Belvedere | 440/7.2 V8 | |
| 1970 - 1971 | Plymouth | Cuda | 426/7 V8 | |
| 1970 - 1971 | Plymouth | Cuda | 440/7.2 V8 | |
| 1963 - 1966 | Plymouth | Fury | 426/7 V8 | |
| 1963 | Plymouth | Fleet Special | 426/7 V8 | |
| 1972 - 1974 | Plymouth | Fury I | 400/6.6 V8 | |
| 1975 - 1978 | Chrysler | Cordoba | 400/6.6 V8 | |
| 1959 - 1975 | Chrysler | Imperial | ||
| 1959 - 1976 | Chrysler | New Yorker | ||
| 1966 - 1978 | Chrysler | Newport | 440/7.2 V8 | |
| 1972 - 1978 | Chrysler | Newport | 400/6.6 V8 | |
| 1972 - 1978 | Chrysler | New Yorker | 400/6.6 V8 | |
| 1972 - 1978 | Chrysler | New Yorker | 440/7.2 V8 | |
| 1972 - 1977 | Chrysler | Town & Country | ||
| 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 | |
| 1968 - 1974 | Plymouth | Fury III | 440/7.2 V8 | |
| 1972 - 1974 | Plymouth | Fury III | 400/6.6 V8 | |
| 1972 - 1977 | Plymouth | Gran Fury | 400/6.6 V8 | |
| 1972 - 1977 | Plymouth | Gran Fury | 440/7.2 V8 | |
| 1968 - 1971 | Plymouth | GTX | 426/7 V8 | |
| 1967 - 1970 | Plymouth | GTX | ||
| 1968 - 1971 | Plymouth | Road Runner | 426/7 V8 | |
| 1969 - 1974 | Plymouth | Road Runner | 440/7.2 V8 | |
| 1968 - 1971 | Plymouth | GTX | 440/7.2 V8 | |
| 1965 - 1967 | Plymouth | Satellite | 426/7 V8 | |
| 1966 - 1974 | Plymouth | Satellite | 440/7.2 V8 | |
| 1972 - 1974 | Plymouth | Satellite | 400/6.6 V8 | |
| 1972 - 1975 | Plymouth | Road Runner | 400/6.6 V8 | |
| 1963 - 1964 | Plymouth | Savoy | 426/7 V8 | |
| 1970 | Plymouth | Superbird | 440/7.2 V8 | |
| 1974 - 1978 | Plymouth | Trailduster | 440/7.2 V8 | |
| 1967 | Plymouth | VIP | 440/7.2 V8 | |
| 1965 - 1967 | Plymouth | Belvedere II | 426/7 V8 | |
| 1967 | Plymouth | Belvedere II | 440/7.2 V8 | |
| 1965 | Plymouth | Fury III | 426/7 V8 | |
| 1965 | Plymouth | Fury II | 426/7 V8 | |
| 1959 - 1965 | Chrysler | 300 | 413/6.8 V8 | |
| 1963 | Chrysler | 300 | 426/7 V8 | |
| 1964 - 1965 | Dodge | 880 | 426/7 V8 | |
| 1967 - 1971 | Chrysler | 300 | ||
| 1966 | Chrysler | 300 | 440/7.2 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 | 440/7.2 V8 | |
| 1975 - 1978 | Dodge | D200 | 400/6.6 V8 | |
| 1976 - 1978 | Dodge | D300 | 400/6.6 V8 | |
| 1975 - 1978 | Dodge | D300 | 440/7.2 V8 | |
| 1978 | Dodge | D450 | 440/7.2 V8 | |
| 1978 | Dodge | D400 | 440/7.2 V8 | |
| 1978 | Dodge | Magnum | 400/6.6 V8 | |
| 1977 - 1978 | Dodge | Ramcharger | 400/6.6 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 | |
| 1975 - 1977 | Dodge | W100 | 440/7.2 V8 | |
| 1977 - 1978 | Dodge | W150 | 400/6.6 V8 | |
| 1978 | Dodge | W150 | 440/7.2 V8 | |
| 1975 - 1978 | Dodge | W200 | 440/7.2 V8 | |
| 1976 - 1978 | Dodge | W200 | 400/6.6 V8 | |
| 1976 - 1978 | Dodge | W300 | 400/6.6 V8 | |
| 1975 - 1978 | Dodge | W300 | 440/7.2 V8 | |
| 1976 - 1978 | Plymouth | PB200 | 440/7.2 V8 | |
| 1976 - 1978 | Plymouth | PB200 | 400/6.6 V8 | |
| 1976 - 1978 | Plymouth | PB300 | 440/7.2 V8 | |
| 1976 - 1978 | Plymouth | PB300 | 400/6.6 V8 | |
| 1977 - 1978 | Plymouth | Trailduster | 400/6.6 V8 | |
| 1963 | Chrysler | New Yorker | 413/6.7 V8 | |
| 1963 | Chrysler | New Yorker | 426/7 V8 | |
| 1959 - 1960 | Chrysler | Newport | ||
| 1962 - 1964 | Chrysler | Newport | 413/6.7 V8 | |
| 1963 | Chrysler | Newport | 426/7 V8 | |
| 1959 - 1965 | Chrysler | Town & Country | 413/6.7 V8 | |
| 1963 | Chrysler | Town & Country | 426/7 V8 | |
| 1968 - 1974 | Chrysler | Town & Country | 440/7.2 V8 | |
| 1963 - 1964 | Dodge | 330 | 426/7 V8 | |
| 1974 | Dodge | B100 Van | 440/7.2 V8 | |
| 1970 - 1971 | Dodge | Challenger | 440/7.2 V8 | |
| 1970 - 1971 | Dodge | Challenger | 426/7 V8 | |
| 1963 - 1964 | Dodge | 440 | 426/7 V8 | |
| 1974 | Dodge | B200 Van | 400/6.6 V8 | |
| 1974 | Dodge | B200 Van | 440/7.2 V8 |
Specs:
| Brand | Mr. Gasket |
|---|---|
| Emission Code | 5 |
| Engine | Chrysler Big Block B/RB |
| Engine | Chrysler Hemi (Gen II) |
| Material | Silicone |
| Product Type | Rear Main Seal |
| Rear Main Seal Style | Two Piece |
| Warranty | Limited 90 Day |
| Weight | 0.1 |
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
4.7 ★★★★★
Based on 164 reviews
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Product Reviews
★★★★★ 5
Great buy
Size: Large (Pack of 1), Product Packaging: Standard Packaging
Definitely recommend. My new rescue has chewed though I can’t even tell you how many “indestructible” toys in under 10 minutes. Not this! We’ve had it a few days and she loves it. Hasn’t chewed through it at all and it literally keeps her busy for an hour at the minimum. Would buy again. Great quality for the price and made to last. Perfect for aggressive chewers.
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Reviewed in the United States on April 8, 2026
★★★★★ 5
My Rottweiler tries to get the extra large broke in half treat out for hours.
Size: Large (Pack of 1), Product Packaging: Standard Packaging
This is super tough and super great.
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Reviewed in the United States on June 4, 2026
★★★★★ 5
Great for Slowing Down Snack Time
Size: Large (Pack of 1), Product Packaging: Standard Packaging
My dog, an English Lab, is a voracious chewer, and destroys most toys in a matter of seconds. He also swallows most snacks without even chewing, and finishes meals in record time. It takes him about 20 minutes to get everything out of the Kong, and since I hide it somewhere on our property, he also takes several minutes to find it. He seems to really love the challenge, and it’s nice to have him take more time with a snack. I tried the Kong Easy Treat to seal the toy, but I find peanut butter works just as well (especially when frozen after being filled and sealed), and it’s cheaper and easier to use.
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Reviewed in the United States on May 12, 2026
★★★★★ 5
This product actually lives up to the title of indestructible.
Size: Large (Pack of 1), Product Packaging: Standard Packaging, Size: Large (Pack of 1), Product Packaging: Standard Packaging
This is the only toy I've had which my dog hasn't destroyed in minutes. I have had a few others that will at least last a few months, but Kong extreme has held up over the years. I like the fact that I can stuff it with treats, bits of other "indestructible" toys and seal it up with peanut butter, then pop it in the freezer to give her an extra 15 minute challenge. I have a couple so I can clean one while she's busy with the other. This size seems to be the best for a ~90lb. dog, the large end being roughly the same size as a tennis ball, which she loves as well.
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Reviewed in the United States on June 9, 2026
★★★★★ 4
Great product but choose a size or two up
Size: Large (Pack of 1), Product Packaging: Standard Packaging
Nice quality toy for long lasting and engaging play! One star docked for the sizing—I don't usually expect to need an xl anything for my 45lb border collie but he cant even fit his canine teeth into the large size to ease the jerky reward out in "hard" position but "easy" position he doesn't even tough the toy just grabs the jerky. Got an XL and it has been great for the jerky both easy and hard positioning. The larges I keep around for liquidy and frozen treats to keep the mess contained and they work very well for that.
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Reviewed in the United States on July 12, 2025