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Description
Mr. Gasket Push-On Breather - Flat Black - 9810BPOverview: This chrome plated breather, or oil filler cap, is internally baffled with filter. Very similar to the original equipment breather used on 1965 1967 Chevrolet 396 427 Big Blocks. GM (General Motors) #6421868. Fits valve cover openings with 1. 22 inch diameter. Its overall dimensions are 2 1 8 inch tall and 2 1 2 inch in diameter. Features: Application: Year Make Model Submodel Engine Size 1964 Buick Electra 425 7 V8 1965 1967 Buick Electra
Overview:
This chrome plated breather, or oil filler cap, is internally baffled with filter. Very similar to the original equipment breather used on 1965-1967 Chevrolet 396-427 Big Blocks. GM (General Motors) #6421868. Fits valve cover openings with 1.22 inch diameter. Its overall dimensions are 2-1/8 inch tall and 2-1/2 inch in diameter.
Features:
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| 1964 | Buick | Electra | 425/7 V8 | |
| 1965 - 1967 | Buick | Electra | ||
| 1965 - 1966 | Buick | Gran Sport | ||
| 1967 | Buick | Gran Sport | 400/6.6 V8 | |
| 1965 - 1967 | Buick | Riviera | ||
| 1965 - 1966 | Buick | Skylark | 401/6.6 V8 | |
| 1967 | Buick | Skylark | 400/6.6 V8 | |
| 1965 - 1967 | Buick | Wildcat | ||
| 1965 | Chevrolet | Biscayne | 409/6.7 V8 | |
| 1963 - 1967 | Chevrolet | Biscayne | 427/7 V8 | |
| 1966 - 1967 | Chevrolet | Caprice | 427/7 V8 | |
| 1966 - 1967 | Chevrolet | Corvette | 427/7 V8 | |
| 1965 | Chevrolet | Impala | 409/6.7 V8 | |
| 1963 - 1967 | Chevrolet | Impala | 427/7 V8 | |
| 1965 | Pontiac | Bonneville | 421/6.9 V8 | |
| 1965 - 1966 | Pontiac | Catalina | 421/6.9 V8 | |
| 1967 | Pontiac | Bonneville | 428/7 V8 | |
| 1967 | Pontiac | Catalina | 428/7 V8 | |
| 1967 | Pontiac | Grand Prix | 428/7 V8 | |
| 1965 | Pontiac | Grand Prix | 421/6.9 V8 | |
| 1965 | Pontiac | Star Chief | 421/6.9 V8 | |
| 1967 | Pontiac | Executive | 428/7 V8 | |
| 1965 - 1967 | Cadillac | DeVille | ||
| 1965 - 1967 | Cadillac | Calais | ||
| 1965 - 1967 | Cadillac | Eldorado | ||
| 1965 - 1967 | Cadillac | Fleetwood | ||
| 1963 - 1967 | Chevrolet | Bel Air | 427/7 V8 | |
| 1965 | Chevrolet | Bel Air | 409/6.7 V8 |
Specs:
| Brand | Mr. Gasket |
|---|---|
| Emission Code | 3 |
| Finish | Black |
| Product Type | Valve Cover Breather |
| Warranty | Limited 90 Day |
| Weight | 0.13 |
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Exchange/Return Notes
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4.6 ★★★★★
Based on 647 reviews
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Product Reviews
★★★★★ 5
Good Teething Chew Toys
Built-in squeaker, attractive for pets. Durable, easy to clean, fit most dogs.
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Favorite Toy
Green and brown dog toys, sturdy and safe. Dogs love chewing them, good for teeth cleaning.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Durable chew toy that keeps my puppy engaged
Size: X-Small, Color: Tangerine, Size: X-Small, Color: Tangerine
My dog went crazy for this toy the second I gave it to him.
He is an 8-month-old 7.5 pound Yorkie puppy, an aggressive chewer on the tail end of teething. He has shown no mercy to this toy and yet there’s not a dent in it. That’s why I got it because the material holds up to aggressive chewing. My puppy has confirmed that!
It keeps him entertained for a long time. It’s small enough to fit in his mouth for chewing but not so small that he would choke.
He loves to sit on the couch but is too young to jump off. This toy keeps him entertained on the couch for a long time so he stays put. He is totally focused on the toy. It is the perfect toy for a bored chewer. Works really well. And it’s super easy to clean.
Because it’s such a small toy, I’m only letting him use it when I’m nearby to supervise. But it has really held up to those busy teeth and Yorkie jaw.
It’s hard to find a durable toy that also holds his interest. This seems to check all the boxes. I didn’t even have to coat it with a treat taste to draw his interest.
I think the bone shape is very functional and attractive for him. He can go a solid 30 minutes chewing on it without getting bored or distracted, and that’s a long time for a Yorkie puppy.
I got this toy because I noticed he wanted to chew, but I was tired of other toys that came apart. This one seems like the right durable choice.
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Reviewed in the United States on January 17, 2026
★★★★★ 5
Best it for dogs that destroy all other toys
Size: Large, Color: Granny Smith
We bought his it for our dog in 2020 when we rescued her. She has literally destroyed every single toy she has within minutes of giving them to her, but not this toy. It has lasted almost 6 years. It finally started to tear in the center so we bought her another one. Honestly it probably broke from my kids playing tug of war with her and they toy and that’s not really what it’s designed for. I’d rate this a 10/10. It’s quality but no so hard she’ll hurt her teeth.
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Reviewed in the United States on April 17, 2026
★★★★★ 5
Finally an all-purpose toy that doesn’t fall apart!
I thought there wasn’t a toy in the world that could withstand the craziness of our 95 lb German Shepherd, until I found this! It’s great for rolling, tugging, fetching, and chewing, soft enough rubber for his teeth yet so far solid enough to not fall apart. He’s had it for almost a month and I don’t see any rips, holes, or missing pieces. I don’t know if it floats since we use it in the house. And a HUGE bonus: IT DOESN’T SQUEAK. 🥳🥳🥳 We ordered a size Large and it’s a perfect fit. He loves to grab and carry it around when he’s excited, so it’s solid but not too heavy. Will definitely be checking out more toys from this brand. Thank you West Paw!
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Reviewed in the United States on April 15, 2026