Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 7 - Jul 12
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Mr. Gasket Ultra-Seal Header Gaskets - 5938Overview: 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 |
|---|---|---|---|---|
| 1974 - 1980 | Dodge | CB300 | 360/5.9 V8 | |
| 1974 - 1980 | Dodge | CB300 | 318/5.2 V8 | |
| 1974 - 1978 | Dodge | Charger | 360/5.9 V8 | |
| 1967 - 1976 | Dodge | Coronet | 318/5.2 V8 | |
| 1966 - 1978 | Dodge | Charger | 318/5.2 V8 | |
| 1973 - 1976 | Dodge | Coronet | 360/5.9 V8 | |
| 1968 - 1976 | Dodge | Dart | 318/5.2 V8 | |
| 1974 - 1976 | Dodge | Dart | 360/5.9 V8 | |
| 1978 - 1983 | Dodge | Diplomat | 318/5.2 V8 | |
| 1977 - 1989 | Dodge | Diplomat | ||
| 1978 - 1979 | Dodge | Magnum | 360/5.9 V8 | |
| 1980 - 1983 | Dodge | Mirada | 318/5.2 V8 | |
| 1980 | Dodge | Mirada | 360/5.9 V8 | |
| 1968 - 1978 | Dodge | Monaco | 318/5.2 V8 | |
| 1978 - 1979 | Dodge | Diplomat | 360/5.9 V8 | |
| 1971 - 1978 | Dodge | Monaco | 360/5.9 V8 | |
| 1978 - 1979 | Dodge | Magnum | 318/5.2 V8 | |
| 1970 - 1974 | Dodge | Challenger | 318/5.2 V8 | |
| 1972 - 1973 | Dodge | Coronet | 340/5.6 V8 | |
| 1974 | Dodge | Challenger | 360/5.9 V8 | |
| 1968 - 1974 | Dodge | D100 Pickup | 318/5.2 V8 | |
| 1966 | Dodge | Charger | 361/5.9 V8 | |
| 1971 - 1973 | Dodge | Charger | 340/5.6 V8 | |
| 1968 - 1974 | Dodge | D200 Pickup | 318/5.2 V8 | |
| 1967 - 1968 | Dodge | Coronet | 273/4.5 V8 | |
| 1968 - 1974 | Dodge | D300 Pickup | 318/5.2 V8 | |
| 1974 | Dodge | D300 Pickup | 360/5.9 V8 | |
| 1967 | Dodge | D300 Series | 318/5.2 V8 | |
| 1968 - 1973 | Dodge | Dart | 340/5.6 V8 | |
| 1967 - 1969 | Dodge | Dart | 273/4.5 V8 | |
| 1967 | Dodge | D100 Series | 318/5.2 V8 | |
| 1974 | Dodge | M350 | 318/5.2 V8 | |
| 1967 | Dodge | D200 Series | 318/5.2 V8 | |
| 1967 - 1973 | Dodge | Polara | 318/5.2 V8 | |
| 1971 - 1973 | Dodge | Polara | 360/5.9 V8 | |
| 1968 - 1974 | Dodge | W100 Pickup | 318/5.2 V8 | |
| 1974 | Dodge | M300 | 318/5.2 V8 | |
| 1967 | Dodge | W100 Series | 318/5.2 V8 | |
| 1969 - 1974 | Dodge | W200 Pickup | 318/5.2 V8 | |
| 1967 | Dodge | W200 Series | 318/5.2 V8 | |
| 1968 - 1974 | Dodge | W300 Pickup | 318/5.2 V8 | |
| 1969 | Dodge | Polara | 440/7.2 V8 | |
| 1974 | Dodge | Ramcharger | 318/5.2 V8 | |
| 1967 | Dodge | W300 Series | 318/5.2 V8 | |
| 1967 | Plymouth | Barracuda | 273/4.5 V8 | |
| 1968 - 1973 | Plymouth | Barracuda | 340/5.6 V8 | |
| 1968 - 1974 | Plymouth | Barracuda | 318/5.2 V8 | |
| 1974 | Plymouth | Barracuda | 360/5.9 V8 | |
| 1975 - 1977 | Dodge | Royal Monaco | 360/5.9 V8 | |
| 1979 - 1981 | Dodge | St. Regis | 318/5.2 V8 | |
| 1975 - 1977 | Dodge | Royal Monaco | 318/5.2 V8 | |
| 1979 - 1980 | Dodge | St. Regis | 360/5.9 V8 | |
| 1970 - 1976 | Plymouth | Duster | 318/5.2 V8 | |
| 1966 - 1978 | Plymouth | Fury | 318/5.2 V8 | |
| 1971 - 1978 | Plymouth | Fury | 360/5.9 V8 | |
| 1974 - 1976 | Plymouth | Duster | 360/5.9 V8 | |
| 1972 - 1983 | Plymouth | Gran Fury | 318/5.2 V8 | |
| 1984 - 1989 | Plymouth | Gran Fury | ||
| 1972 - 1980 | Plymouth | Gran Fury | 360/5.9 V8 | |
| 1968 - 1975 | Plymouth | Road Runner | 318/5.2 V8 | |
| 1971 - 1976 | Plymouth | Scamp | 318/5.2 V8 | |
| 1974 - 1975 | Plymouth | Road Runner | 360/5.9 V8 | |
| 1968 - 1976 | Plymouth | Valiant | 318/5.2 V8 | |
| 1976 | Plymouth | Valiant | 360/5.9 V8 | |
| 1976 - 1980 | Plymouth | Volare | 318/5.2 V8 | |
| 1976 - 1980 | Plymouth | Volare | 360/5.9 V8 | |
| 1971 - 1980 | Chrysler | Newport | 360/5.9 V8 | |
| 1967 - 1970 | Dodge | A100 Truck | 318/5.2 V8 | |
| 1967 | Dodge | A100 Truck | 273/4.5 V8 | |
| 1971 - 1974 | Dodge | B100 Van | 318/5.2 V8 | |
| 1971 - 1974 | Dodge | B300 Van | 318/5.2 V8 | |
| 1970 - 1973 | Dodge | Challenger | 340/5.6 V8 | |
| 1971 - 1974 | Dodge | B200 Van | 318/5.2 V8 | |
| 1973 - 1974 | Plymouth | Cuda | 318/5.2 V8 | |
| 1970 - 1973 | Plymouth | Cuda | 340/5.6 V8 | |
| 1974 | Plymouth | Cuda | 360/5.9 V8 | |
| 1970 - 1973 | Plymouth | Duster | 340/5.6 V8 | |
| 1968 - 1973 | Plymouth | Fury I | 318/5.2 V8 | |
| 1971 - 1974 | Plymouth | Fury I | 360/5.9 V8 | |
| 1967 - 1973 | Plymouth | Fury II | 318/5.2 V8 | |
| 1971 - 1974 | Plymouth | Fury II | 360/5.9 V8 | |
| 1967 - 1973 | Plymouth | Fury III | 318/5.2 V8 | |
| 1971 - 1974 | Plymouth | Fury III | 360/5.9 V8 | |
| 1968 | Plymouth | GTX | 318/5.2 V8 | |
| 1974 | Plymouth | PB200 Van | 318/5.2 V8 | |
| 1975 - 1980 | Chrysler | Cordoba | 360/5.9 V8 | |
| 1975 - 1983 | Chrysler | Cordoba | 318/5.2 V8 | |
| 1983 | Chrysler | Fifth Avenue | 318/5.2 V8 | |
| 1984 - 1989 | Chrysler | Fifth Avenue | ||
| 1977 | Chrysler | LeBaron | ||
| 1978 - 1981 | Chrysler | LeBaron | 318/5.2 V8 | |
| 1978 - 1979 | Chrysler | LeBaron | 360/5.9 V8 | |
| 1977 - 1980 | Chrysler | New Yorker | 360/5.9 V8 | |
| 1979 - 1982 | Chrysler | New Yorker | 318/5.2 V8 | |
| 1981 | Chrysler | New Yorker | ||
| 1978 - 1981 | Chrysler | Town & Country | 318/5.2 V8 | |
| 1978 - 1979 | Chrysler | Town & Country | 360/5.9 V8 | |
| 1979 - 1981 | Chrysler | Newport | 318/5.2 V8 | |
| 1976 - 1980 | Dodge | Aspen | 318/5.2 V8 | |
| 1976 - 1980 | Dodge | Aspen | 360/5.9 V8 | |
| 1967 - 1970 | Plymouth | Belvedere | 318/5.2 V8 | |
| 1967 - 1968 | Plymouth | Belvedere | 273/4.5 V8 | |
| 1972 | Plymouth | Satellite | 340/5.6 V8 | |
| 1967 - 1974 | Plymouth | Satellite | 318/5.2 V8 | |
| 1971 - 1973 | Plymouth | Road Runner | 340/5.6 V8 | |
| 1974 | Plymouth | Satellite | 360/5.9 V8 | |
| 1967 - 1968 | Plymouth | Satellite | 273/4.5 V8 | |
| 1974 | Plymouth | Trailduster | 318/5.2 V8 | |
| 1967 - 1969 | Plymouth | Valiant | 273/4.5 V8 | |
| 1967 | Plymouth | VIP | 318/5.2 V8 | |
| 1967 | Plymouth | Belvedere II | 318/5.2 V8 | |
| 1967 | Plymouth | Belvedere II | 273/4.5 V8 | |
| 1970 | Dodge | A100 | ||
| 1974 | Plymouth | PB300 Van | 318/5.2 V8 | |
| 1968 | Plymouth | Road Runner | 273/4.5 V8 | |
| 1974 | Plymouth | PB100 Van | 318/5.2 V8 |
Specs:
| Brand | Mr. Gasket |
|---|---|
| Collector Gaskets Included | No |
| Emission Code | 5 |
| Engine | Chrysler Small Block LA |
| Gasket Line | Ultra-Seal |
| Material | Ultra-seal |
| Port Shape | Rectangle |
| Port Size | 1.00" x 1.64" |
| Product Type | Header Gaskets |
| Thickness | .062" |
| Warning | California Proposition 65 |
| Warranty | Limited 90 Day Warranty |
| Weight | 0.44 |
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
4.6 ★★★★★
Based on 874 reviews
Sort
Product Reviews
★★★★★ 5
Great daily chair
Color: Black, Color: Black
This is a great chair and very comfortable. I'm hard on fabrics and the material is excellent for me. I didn't think I would like the headrest (because I've never had one), however, I enjoy it's use at times. The wheels roll very easily and the seat height is perfect. The seat is easy to keep clean. I've had this chair for 3 months with daily use and it looks brand new. I would buy this chair again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
★★★★★ 3
Cheaply made but functional
Color: Black
Pros:
The headrest is highly adjustable. Even if you're tall you'll likely be able to tilt it so that you can rest your head on it while reclining.
The instructions for putting it together are easy to follow.
It's perfectly serviceable as a desk chair with no glaring defects.
The mesh material keeps your body cool and dry even when sitting in it all day.
Cons
It's obviously very lightweight and cheaply made. This does make the chair easier to move, but this doesn't really feel like a $180 chair at all. More like a $120 or even $100 chair.
The chair back is attached to the chair seat by a plastic bracket. Nearly every desk chair I've had in the past has had their back attached to the bottom with a metal bracket, and even those start to bend out of shape after a year or so. While reclining a good portion of your weight will be resting on this plastic bracket, and I simply cannot see this cheap plastic lasting for very long supporting anyone's body weight over a long period of time. If you buy this chair, make sure to get the warranty.
The armrests are closer together than on most chairs, which creates a claustrophobic feeling of being squeezed by them. You get used to it eventually, and you can just put the armrests up if you want to, but a way to adjust the armrest width would have been nice.
The lumbar support doesn't really do anything at all. It only presses against my back at the most intense setting, and even then not very much.
There is no incremental recline setting. Either you are fully reclined, or sitting fully upright. Luckily the full recline setting is about perfect for me, but for a $180 chair you'd expect a bit more settings here.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
★★★★★ 5
Great Chair
Color: Black
Very comfortable chair! I’m a big guy - 6’ 2”, 285 lbs. and it fits me perfectly. The head rest is a nice touch and I appreciate it more than I thought I would. Lumbar support is in just the right position and is adjustable (more support vs. less support). It does adjust up and down but not very much. Was also super simple to put together although I did have to crank on the screws that attach the back of the arm rest to the back of the chair. If you’re looking for a place to plant your butt for 8 hours, this is your chair.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
★★★★★ 5
Great product
Color: Dark Black
Easy to assemble and very good quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
★★★★★ 1
DO NOT BUY! DO NOT BUY! DO NOT BUY!
Color: Black, Color: Black
Absolute garbage chair. Only had for six month and the mesh on the seat has already come apart after using it for my home office. Chair was squaking after only three months and now I can't even sit in it cause it sags.
Can't even get my money back for this cheap garbage.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2026