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Description
Header Gaskets-Alum-Layered-262-400 Chevrolet SmallBlock GenI 1955-91 99150AFLTOverview: FLOWTECH REAL SEAL header and collector gaskets are a revolutionary break through in exhaust sealing technology. Constructed of separate layers of "Dead Soft" aluminum, REAL SEALS provide a do it once solution that will not burn or blow out. REAL SEAL gaskets will work when an o ringed gasket will not because the "Dead Soft" aluminum conforms to create a leak proof seal. REAL SEALS can also be easily trimmed for port matching and you can use
Overview:
FLOWTECH REAL-SEAL header and collector gaskets are a revolutionary break-through in exhaust sealing technology. Constructed of separate layers
of "Dead Soft" aluminum, REAL SEALS provide a do-it-once solution that will not burn or blow out. REAL-SEAL gaskets will work when an o-ringed gasket will not because the "Dead Soft" aluminum conforms to create a leak-proof seal. REAL-SEALS can also be easily trimmed for port-matching and
you can use them over and over again.
Features:
- Suitable For Port-Matching
- Will Not Burn Or Blow Out
- Re-Useable
- Water/Weather Resistant
- Multi-Layer "Dead Soft" aluminum conforms to create a leak-proof seal
- Made In USA
Application:
- 1955-1986 Chevrolet Corvette
- 1959-1986 Chevrolet El Camino
- 1959-1986 Pontiac Parisienne
- 1958-1985 Chevrolet Impala
- 1955-1981 Pontiac Laurentian
- 1966-1986 Chevrolet Caprice
- 1955-1975 Chevrolet Bel Air
- 1967-1986 Chevrolet Camaro
- 1964-1983 Chevrolet Malibu
- 1967-1986 Chevrolet C10 Suburban
- 1967-1986 Chevrolet C20 Suburban
- 1967-1986 Chevrolet K10 Suburban
- 1967-1986 Chevrolet K20 Suburban
- 1968-1986 Pontiac Firebird
- 1970-1986 GMC Jimmy
- 1970-1986 Chevrolet Monte Carlo
- 1971-1986 Pontiac Bonneville
- 1960-1974 Chevrolet C10 Pickup
- 1960-1974 Chevrolet C20 Pickup
- 1960-1974 Chevrolet C30 Pickup
- 1960-1974 Chevrolet K10 Pickup
- 1960-1974 Chevrolet K20 Pickup
- 1958-1972 Chevrolet Brookwood
- 1958-1972 Chevrolet Biscayne
- 1968-1981 Pontiac LeMans
- 1959-1972 Chevrolet Kingswood
- 1958-1970 Pontiac Strato-Chief
- 1975-1986 Chevrolet C10
- 1975-1986 Chevrolet C20
- 1975-1986 Chevrolet G10
- 1975-1986 Chevrolet C30
- 1975-1986 Chevrolet G20
- 1975-1986 Chevrolet G30
- 1970-1981 Pontiac Catalina
- 1975-1986 Pontiac Grand Prix
- 1975-1986 Chevrolet K5 Blazer
- 1975-1986 Chevrolet K10
- 1975-1986 Chevrolet K20
- 1969-1979 Chevrolet Nova
- 1964-1973 Chevrolet Chevelle
- 1977-1986 Buick Regal
- 1977-1986 Chevrolet K30
- 1978-1986 Oldsmobile Cutlass
- 1978-1986 Oldsmobile Cutlass Supreme
- 1975-1983 Pontiac Grand LeMans
- 1978-1986 GMC Caballero
- 1967-1974 GMC K15/K1500 Pickup
- 1967-1974 GMC K15/K1500 Suburban
- 1967-1974 GMC K25/K2500 Pickup
- 1967-1974 GMC K25/K2500 Suburban
- 1979-1986 GMC C1500
- 1979-1986 GMC C1500 Suburban
- 1979-1986 GMC K1500
- 1979-1986 GMC K1500 Suburban
- 1979-1986 GMC K2500
- 1979-1986 GMC K2500 Suburban
- 1979-1986 GMC K3500
- 1975-1982 Oldsmobile Delta 88
- 1973-1980 Pontiac Grand Am
- 1967-1974 Chevrolet G20 Van
- 1967-1974 GMC C15/C1500 Pickup
- 1967-1974 GMC C35/C3500 Pickup
- 1967-1974 GMC G15/G1500 Van
- 1967-1974 GMC G25/G2500 Van
- 1964-1971 Pontiac Acadian
- 1979-1986 GMC G2500
- 1979-1986 GMC G3500
- 1979-1986 GMC G1500
- 1979-1986 GMC C2500
- 1979-1986 GMC C2500 Suburban
- 1979-1986 GMC C3500
- 1967-1974 GMC C15/C1500 Suburban
- 1967-1974 GMC C25/C2500 Pickup
- 1967-1974 GMC C25/C2500 Suburban
- 1960-1966 Chevrolet Suburban
- 1971-1977 GMC Sprint
- 1978-1984 Oldsmobile Cutlass Calais
- 1968-1974 Chevrolet G10 Van
- 1955-1961 Chevrolet Nomad
- 1971-1977 Pontiac Ventura
- 1960-1966 GMC 3000
- 1960-1966 GMC 3500
- 1968-1974 GMC K35/K3500 Pickup
- 1968-1974 Chevrolet K30 Pickup
- 1963-1968 Chevrolet Chevy II
- 1955-1960 GMC Truck
- 1955-1960 Chevrolet Truck
- 1960-1965 GMC Suburban
- 1964-1969 Pontiac Beaumont
- 1969-1974 Chevrolet Blazer
- 1977-1981 Buick Century
- 1955-1959 GMC 150
- 1955-1959 GMC 250
- 1955-1959 GMC 300
- 1955-1959 GMC 350-8
- 1955-1959 GMC 370
- 1955-1959 GMC F350
- 1955-1959 GMC F370
- 1955-1959 GMC FM340
- 1955-1959 GMC FM350
- 1955-1959 GMC M300
- 1955-1959 GMC PM150
- 1955-1959 GMC PM250
- 1955-1959 GMC 100
- 1955-1959 GMC S300
- 1955-1959 GMC S370
- 1970-1974 GMC G35/G3500 Van
- 1970-1974 Chevrolet G30 Van
- 1978-1982 Buick LeSabre
- 1975-1979 Chevrolet Monza
- 1975-1978 GMC C15 Suburban
- 1975-1978 GMC C25
- 1973-1976 Chevrolet Laguna
- 1969-1972 Chevrolet Townsman
- 1960-1963 GMC 1000 Series
- 1960-1963 GMC 1500 Series
- 1960-1963 GMC 2500 Series
- 1980-1983 Oldsmobile Cutlass Cruiser
- 1975-1978 GMC K15 Suburban
- 1975-1978 GMC K25
- 1975-1978 GMC K25 Suburban
- 1972-1975 Pontiac Grandville
- 1956-1959 GMC PM151
- 1956-1959 GMC PM251
- 1955-1958 Chevrolet Sedan Delivery
- 1975-1978 GMC G25
- 1975-1978 GMC G35
- 1975-1978 GMC G15
- 1975-1978 GMC C25 Suburban
- 1975-1978 GMC C35
- 1975-1978 GMC K15
- 1955-1958 Pontiac Pathfinder
- 1975-1978 GMC C15
- 1971-1974 Pontiac Grand Safari
- 1955-1957 Chevrolet One-Fifty Series
- 1955-1957 Chevrolet Two-Ten Series
- 1975-1977 Oldsmobile Custom Cruiser
- 1978-1980 Oldsmobile Cutlass Salon
- 1977-1979 Oldsmobile Omega
- 1977-1979 Oldsmobile Starfire
- 1959-1961 Chevrolet Parkwood
- 1957-1959 GMC PM152
- 1957-1959 GMC PM153
- 1977-1979 Buick Skylark
- 1968-1970 Pontiac Tempest
- 1977-1979 Pontiac Phoenix
- 1955-1956 GMC M340
- 1977-1978 GMC K35
- 1957-1958 Chevrolet Del Ray
- 1969-1970 Chevrolet Estate
- 1978-1979 Pontiac Sunbird
- 1955 GMC 150-22
- 1955 GMC 250-22
- 1955 GMC 280-22
- 1959 Chevrolet 3C
- 1959 Chevrolet 3D
- 1959 Chevrolet 3E
- 1959 Chevrolet 3F
- 1959 Chevrolet 3G
- 1958 GMC PM252
- 1958 GMC PM253
- 1967 Chevrolet K20 Panel
- 1955 GMC 100-22
- 1959 Chevrolet 3B
- 1958 Chevrolet Yeoman
Specs:
| Brand | Flowtech |
|---|---|
| Collector Gaskets Included | No |
| Emission Code | 5 |
| Engine | Chevrolet Small Block Gen I |
| Gasket Line | MLS |
| Material | Aluminum |
| Port Shape | Square |
| Port Size | 1.45" x 1.48" |
| Product Type | Header Gaskets |
| Thickness | .125" |
| Type of Component | Exhaust Gaskets |
| Warning | California Proposition 65 |
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
4.5 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 5
Great for heavy duty chewers
Flavor Name: Steak, Size: Medium
Our two dogs love these bones. They’re very durable for heavy duty chewers and it takes them a fairly good time to get through them. They must love the taste because it’s the bone they first pick up. I’ve gotten two flavors so far, beef and the peanut butter. Our dogs love them and because of that so do we.
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Reviewed in the United States on April 23, 2026
★★★★★ 4
Seems great, but not for my lab
Flavor Name: Bacon, Size: Medium, Flavor Name: Bacon, Size: Medium
I am rating this, to some degree, from a hypothetical standpoint. It SEEMS like a great bone. It SEEMS like it will last quite a while and withstand some avid chewers. However, I can't say for certain because it just wasn't well-loved by my Black Lab.
She has a penchant for chewing animal bones. She loves to find wildlife bones in our yard and munch on them, so we do our best to provide healthy chewing options in the house. She will go to town on a cow's joint and even enjoys a peanut butter filled Kong from time to time, but this bone just didn't meet her expectations.
It's not a bad bone. It has a very rugged feel and seems like it would be safe if bits and pieces were to begin coming off, like they're safely edible. I guess (and I can't say for sure..) it just doesn't have as much of a meaty flavor as many dog's like. If your pup is a Nylabone chewer- or likes to chow down on your loafers- this bone may be a perfect new addition to his/her toy bin.
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Reviewed in the United States on July 10, 2020
★★★★★ 5
Bone for destroyers
Flavor Name: Bacon, Size: Small
4 months ago I Bought this bone for my 90lb lab who destroys all his bones, but not this one! It barely has any teeth/chew marks on it and it’s one of his favorites. It was a great find and I’ll be sure to buy again. If you have a dog that destroys bones I’d give this one a try.
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Reviewed in the United States on April 16, 2026
★★★★★ 5
Immediate Doggy Happiness!
Flavor Name: Bacon, Size: Medium
Great dog bones! These are a nice size for my 55-pound Aussie, as well as our 96-pound Alaskan Shepherd. They are big enough to last for a while, and big enough to see so that I don't step on them with my bare feet; part of this is that they stick up off the floor a bit, instead of being a flat bone, all in one plane.
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Reviewed in the United States on May 17, 2026
★★★★★ 3
Nice size, the quality is changing. It is softer I believe than it used to be.
Flavor Name: Peanut Butter, Size: Large, Flavor Name: Peanut Butter, Size: Large
Not sure if something has changed in the way this product "Barkbone" is made. I bought this many times before and it lasted. Today, on my dogs first day of use, he had chipped through the material, and already destroying it. he has had it for less than 3 hours.
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Reviewed in the United States on September 29, 2025