Mr. Gasket Copper Seal Header Gaskets - 7166MRG
SKU: 88049137162

Mr. Gasket Copper Seal Header Gaskets - 7166MRG

Sale price$65.24 Regular price$72.49
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Description

Mr. Gasket Copper Seal Header Gaskets - 7166MRGOverview: Mr. Gasket CopperSEAL Header Gaskets are a high quality copper gasket that performs extremely well and are reusable. We recommend this in all racing and high performance applications. They are for stock heads unless indicated, and work well in high heat and turbocharged applications. Features: Manufactured from Dead Soft (solid) . 043" thick copper material . 051" embossment around each exhaust port to seal irregular surfaces. Total gasket

Overview:

Mr. Gasket CopperSEAL Header Gaskets are a high quality copper gasket that performs extremely well and are reusable. We recommend this in all racing and high performance applications. They are for stock heads unless indicated, and work well in high heat and turbocharged applications.

Features:

  • Manufactured from “Dead Soft” (solid) .043" thick copper material
  • .051" embossment around each exhaust port to seal irregular surfaces. Total gasket thickness .094"
  • Provides excellent sealing and durability
  • Conforms to and seals minor surface irregularities
  • For high performance street, drag race, oval track and turbocharged (extreme heat) applications

Application:

Year Make Model Submodel Engine Size
1984 - 1988 Dodge D350
1981 - 1989 Dodge D250 360/5.9 V8
1981 - 1989 Dodge D350 360/5.9 V8
1979 - 1981 Dodge D400
1978 Dodge D450 360/5.9 V8
1975 - 1980 Dodge D300 360/5.9 V8
1974 - 1976 Dodge Dart 360/5.9 V8
1978 - 1983 Dodge Diplomat 318/5.2 V8
1978 - 1979 Dodge Diplomat 360/5.9 V8
1977 - 1989 Dodge Diplomat
1978 Dodge D400 360/5.9 V8
1979 - 1981 Dodge D450
1980 Dodge Mirada 360/5.9 V8
1980 - 1983 Dodge Mirada 318/5.2 V8
1968 - 1976 Dodge Dart 318/5.2 V8
1968 - 1978 Dodge Monaco 318/5.2 V8
1971 - 1978 Dodge Monaco 360/5.9 V8
1978 - 1979 Dodge Magnum 318/5.2 V8
1978 - 1979 Dodge Magnum 360/5.9 V8
1974 - 1989 Dodge Ramcharger 360/5.9 V8
1975 - 1977 Dodge Royal Monaco 318/5.2 V8
1979 - 1981 Dodge St. Regis 318/5.2 V8
1975 - 1988 Dodge W100 360/5.9 V8
1977 - 1989 Dodge W150 360/5.9 V8
1975 - 1977 Dodge Royal Monaco 360/5.9 V8
1979 - 1980 Dodge St. Regis 360/5.9 V8
1975 - 1980 Dodge W200 360/5.9 V8
1981 - 1989 Dodge W250 360/5.9 V8
1975 - 1980 Dodge W300 360/5.9 V8
1981 - 1988 Dodge W350
1982 - 1989 Dodge W350 360/5.9 V8
1979 Dodge W300
1970 - 1976 Plymouth Duster 318/5.2 V8
1974 - 1976 Plymouth Duster 360/5.9 V8
1971 - 1978 Plymouth Fury 360/5.9 V8
1972 - 1983 Plymouth Gran Fury 318/5.2 V8
1966 - 1978 Plymouth Fury 318/5.2 V8
1972 - 1980 Plymouth Gran Fury 360/5.9 V8
1984 - 1989 Plymouth Gran Fury
1976 - 1978 Plymouth PB100 360/5.9 V8
1975 - 1980 Plymouth PB200 360/5.9 V8
1971 - 1974 Dodge D200 Pickup 360/5.9 V8
1967 Dodge D200 Series 318/5.2 V8
1968 - 1974 Dodge D300 Pickup 318/5.2 V8
1971 - 1974 Dodge D300 Pickup 360/5.9 V8
1967 - 1973 Dodge Polara 318/5.2 V8
1967 Dodge D300 Series 318/5.2 V8
1969 Dodge Polara 440/7.2 V8
1971 - 1973 Dodge Polara 360/5.9 V8
1967 - 1969 Dodge Dart 273/4.5 V8
1968 - 1973 Dodge Dart 340/5.6 V8
1968 - 1974 Dodge W100 Pickup 318/5.2 V8
1972 - 1974 Dodge W100 Pickup 360/5.9 V8
1974 Dodge M350 318/5.2 V8
1969 - 1974 Dodge W200 Pickup 318/5.2 V8
1971 - 1974 Dodge W200 Pickup 360/5.9 V8
1967 Dodge W200 Series 318/5.2 V8
1968 - 1974 Dodge W300 Pickup 318/5.2 V8
1971 - 1974 Dodge W300 Pickup 360/5.9 V8
1967 Dodge W300 Series 318/5.2 V8
1974 Dodge Ramcharger 318/5.2 V8
1967 Dodge W100 Series 318/5.2 V8
1967 Plymouth Barracuda 273/4.5 V8
1968 - 1974 Plymouth Barracuda 318/5.2 V8
1968 - 1973 Plymouth Barracuda 340/5.6 V8
1967 - 1968 Plymouth Belvedere 273/4.5 V8
1967 - 1970 Plymouth Belvedere 318/5.2 V8
1970 - 1973 Plymouth Cuda 340/5.6 V8
1974 Plymouth Barracuda 360/5.9 V8
1978 - 1979 Chrysler LeBaron 360/5.9 V8
1978 - 1981 Chrysler LeBaron 318/5.2 V8
1977 - 1980 Chrysler New Yorker 360/5.9 V8
1979 - 1982 Chrysler New Yorker 318/5.2 V8
1970 - 1973 Plymouth Duster 340/5.6 V8
1973 - 1974 Plymouth Cuda 318/5.2 V8
1974 Plymouth Cuda 360/5.9 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 PB100 Van 318/5.2 V8
1974 Plymouth PB100 Van 360/5.9 V8
1974 Plymouth PB200 Van 318/5.2 V8
1974 Plymouth PB200 Van 360/5.9 V8
1971 - 1973 Plymouth Road Runner 340/5.6 V8
1968 - 1975 Plymouth Road Runner 318/5.2 V8
1974 - 1975 Plymouth Road Runner 360/5.9 V8
1974 Plymouth PB300 Van 318/5.2 V8
1974 Plymouth PB300 Van 360/5.9 V8
1967 - 1974 Plymouth Satellite 318/5.2 V8
1968 Plymouth Road Runner 273/4.5 V8
1972 Plymouth Satellite 340/5.6 V8
1968 - 1974 Dodge D100 Pickup 318/5.2 V8
1971 - 1974 Dodge D100 Pickup 360/5.9 V8
1968 - 1974 Dodge D200 Pickup 318/5.2 V8
1974 Dodge M300 318/5.2 V8
1966 - 1978 Dodge Charger 318/5.2 V8
1981 - 1989 Dodge B350 360/5.9 V8
1974 Plymouth Satellite 360/5.9 V8
1971 - 1976 Plymouth Scamp 318/5.2 V8
1975 - 1983 Chrysler Cordoba 318/5.2 V8
1975 - 1980 Chrysler Cordoba 360/5.9 V8
1983 Chrysler Fifth Avenue 318/5.2 V8
1984 - 1989 Chrysler Fifth Avenue
1981 - 1983 Chrysler Imperial
1977 Chrysler LeBaron
1967 - 1968 Plymouth Satellite 273/4.5 V8
1974 Plymouth Trailduster 318/5.2 V8
1974 - 1981 Plymouth Trailduster 360/5.9 V8
1968 - 1976 Plymouth Valiant 318/5.2 V8
1967 Plymouth VIP 318/5.2 V8
1967 - 1969 Plymouth Valiant 273/4.5 V8
1967 Plymouth Belvedere II 318/5.2 V8
1967 Plymouth Belvedere II 273/4.5 V8
1970 Dodge A100
1975 - 1988 Dodge D100 360/5.9 V8
1971 - 1974 Dodge B200 Van 360/5.9 V8
1971 - 1974 Dodge B300 Van 318/5.2 V8
1971 - 1974 Dodge B300 Van 360/5.9 V8
1967 - 1976 Dodge Coronet 318/5.2 V8
1974 - 1980 Dodge CB300 318/5.2 V8
1974 - 1980 Dodge CB300 360/5.9 V8
1970 - 1974 Dodge Challenger 318/5.2 V8
1970 - 1973 Dodge Challenger 340/5.6 V8
1972 - 1973 Dodge Coronet 340/5.6 V8
1973 - 1976 Dodge Coronet 360/5.9 V8
1971 - 1973 Dodge Charger 340/5.6 V8
1967 Dodge D100 Series 318/5.2 V8
1967 - 1968 Dodge Coronet 273/4.5 V8
1981 Chrysler New Yorker
1971 - 1980 Chrysler Newport 360/5.9 V8
1979 - 1981 Chrysler Newport 318/5.2 V8
1978 - 1979 Chrysler Town & Country 360/5.9 V8
1976 - 1978 Dodge B100 360/5.9 V8
1978 - 1981 Chrysler Town & Country 318/5.2 V8
1976 - 1980 Dodge Aspen 318/5.2 V8
1976 - 1980 Dodge Aspen 360/5.9 V8
1975 - 1980 Dodge B200 360/5.9 V8
1980 Dodge RD200 360/5.9 V8
1981 - 1989 Dodge B250 360/5.9 V8
1975 - 1980 Dodge B300 360/5.9 V8
1974 Dodge Challenger 360/5.9 V8
1967 Dodge A100 Truck 273/4.5 V8
1967 - 1970 Dodge A100 Truck 318/5.2 V8
1974 - 1978 Dodge Charger 360/5.9 V8
1971 - 1974 Dodge B100 Van 318/5.2 V8
1971 - 1974 Dodge B100 Van 360/5.9 V8
1971 - 1974 Dodge B200 Van 318/5.2 V8
1975 - 1980 Plymouth PB300 360/5.9 V8
1981 Plymouth PB250 360/5.9 V8
1981 - 1983 Plymouth PB350 360/5.9 V8
1976 Plymouth Valiant 360/5.9 V8
1976 - 1980 Plymouth Volare 360/5.9 V8
1976 - 1980 Plymouth Volare 318/5.2 V8
1977 - 1989 Dodge D150 360/5.9 V8
1975 - 1980 Dodge D200 360/5.9 V8

Specs:

Brand Mr. Gasket
Collector Gaskets Included No
Emission Code 5
Engine Chrysler Small Block LA
Gasket Line Copper-Seal
Material Copper
Port Shape Rectangle
Port Size 1.00" x 1.64"
Product Type Header Gaskets
Thickness .094"
Warning California Proposition 65
Warranty Limited 90 Day Warranty
Weight 0.88
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 88049137162

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4.8 ★★★★★
Based on 1705 reviews
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Product Reviews
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Verified Purchase
DP
Massapequa, US
★★★★★ 5
Perfect “Command Center” Monitor for Mac Studio – Worth the Money
Title: Perfect “Command Center” Monitor for Mac Studio – Worth the Money I’m using this Dell U4025QW with a Mac Studio M2 Max, and it’s exactly what I wanted: a huge, sharp, curved workspace that also handles games really well. The 40” 5K2K screen lets me keep Docs, email, browser, and gradebook all open at once without feeling cramped, and the curve makes it comfortable to use for long stretches. Text is clear, colors look great out of the box, and bumping it up to 120 Hz makes macOS feel noticeably smoother. The Thunderbolt/USB-C hub is a big bonus – one cable to the Mac, and everything else (keyboard, mouse, etc.) can live on the back of the monitor, so the desk stays clean. It’s not cheap, but if you live in documents all day and also want your games to look and run smoothly, this is a fantastic “do it all” monitor and I have zero regrets about the purchase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 29, 2025
T
Verified Purchase
Tim Boggs
Louisville, US
★★★★★ 5
The best business monitor
I have used many of the monitors in the Dell UltraSharp line and thought that my previous monitor, the U4021QW was the apex of Business monitors. The U4025QW improves on it in small but meaningful ways. Looking at the monitor, you can't visually tell the difference at first glance. To me the ultra-wide curved monitor format is preferrable to dual monitors. The 5120 x 2160 / 21:9 screen ratio gives the business user more vertical space while not sacrificing the horizontal space. Many ultrawide monitors give you the width of 5120 but stick you with 1440 vertically. That resolution always felt cramped to me. This connectivity on this monitor far exceeds its predecessor. It is upgraded from Thunderbolt 3 to Thunderbolt 4, adds 2 usb-c ports and one USB-A, giving a total of 5 USB-A and 5 USB-C. This allowed me to replace my old desktop dock and go with a direct connection to the monitor for everything. When reading about the monitor, I thought the drop-down ports were a bit gimmicky, but it is a big improvement over the location on the previous model. This is very accessible and helps with wireless devices whose signal degrades by being placed behind the monitor. The monitor is pricey, but I think it is worth it if you are on your computer all day every day. As on co-worker once said, the monitor is the part of the computer that we use 100% of the time we interact with it.
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Reviewed in the United States on December 13, 2025
L
Verified Purchase
Lacey Groff
Lake Worth, US
★★★★★ 5
Extremely sturdy
Color: Black-Mount
I purchased this heavy-duty dual gaming monitor arm holder as a birthday gift for my husband to mount his curved gaming screens, and it completely transformed his setup. It feels extremely sturdy and well-built, easily supporting both monitors without any wobble or instability. The adjustability is excellent. He can tilt, swivel, and reposition each screen with ease, which makes it perfect for both gaming and everyday computer use. It also helps clear up a lot of desk space, giving his setup a much cleaner and more organized look. Installation was straightforward, and the mounting hardware felt solid and secure. Once everything was set up, the arms moved smoothly but stayed firmly in place when adjusted. He absolutely loved it and immediately noticed how much more comfortable and immersive his gaming experience became. Overall, this is a high-quality, durable monitor mount that made a perfect upgrade for his gaming station and a great birthday gift.
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Reviewed in the United States on April 23, 2026
J
Verified Purchase
Joel R Fisk
Cuba, US
★★★★★ 5
The Product is Great - The Customer Service is Even Better
Color: Black-Mount
I want to preface by saying I have never written a review for a product on Amazon. Having said that I felt compelled to review this particular product after an incredibly positive interaction I had with AVLT. I purchased this set of monitor arms due to the fact that my desk is relatively small, as is the space I have to work with while at my computer. I currently have two monitors, a 34" Samsung 2K monitor for gaming, and a 32" Samsung 1080p monitor. After purchasing this product and assembling it, I realized my 2nd monitor (32") was a few years too old and the bracket adapter for the monitor arm didn't fit. That was fine, as at least I had some extra space to work with until I got myself a new monitor to use with the other monitor arm. Fast forward several months and I finally had the monitor I needed - only to find out that I had lost or misplaced the additional bracket. So now I had 3 monitors and even less space to work with. After a lengthy search for a sufficient replacement part, I finally reached out to AVLT in desperation regarding this missing bracket. My query was answered by an employee named "George" the very same day, and within 48 hours I was able to secure the replacement bracket which is currently en route to my house from Taiwan. Alongside the headache of not being able to properly mount the monitors I had on hand, I start working from home this coming week, and my wife is currently 33 weeks pregnant. Needless to say, the ease with which I was able to negotiate this minor, yet irritating problem I was dealing with has helped me more than any Amazon review can ever repay. The help I received from George was simply outstanding, and I hope he receives the recognition he deserves from the company he works for. Sometimes even little things like a quick response can help people more than you realize. Thank you, George and AVLT! Oh, and the monitor arms are great. They're sturdy (metal not plastic), firmly clamp to my desk, and are easily adjustable. As stated in some previous reviews, there is a bit of clearance needed behind your desk in order for these monitor arms to move about, but that's a minor inconvenience at worst. I recommend them, and the fact that the company is there to help should anything go awry is extremely helpful in a world where the emphasis on this seems to be fading away. If I ever need a product similar to this one, or know anyone who does, I will recommend AVLT products specifically based on the customer service I received (the product is awesome too). Thanks again, George! - Joel
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Reviewed in the United States on July 30, 2023
G
Verified Purchase
Grong 1969
Fort Morgan, US
★★★★★ 5
Sturdy and super strong
Color: Black-Mount
This product is very well made heavy duty no plastic parts basically all metal less than 1 % plastic. Pro's holds monitors easily and one of mine weights 19.8 pounds according to the manufacture and the other one without stand that came with it weights 25 pounds don't know what they were thinking when they built that one hard to find arms to support that. But this arm system takes it like a pro yes you have to pay attention to which way you turn the adjustment screws but they are clearly marked. Had no problem assembling it or putting it together two installs one for a clamp on the edge one for a hole. I used the edge clamp and that beast is not coming off. I did tighten one side and then the other went back and forth between the two main screws until I got them equally tight to insure the monitors would not fall. They cost way more than this arm system. Cons: There are 4 screws that hold the plate that holds the clamp screws plate. They are preinstalled and slip into a hole and slot configuration. Remove them completely and throw them out go to your local hardware store and get hardened screws they cost me about sixty cents apiece. I also got some washers and put them on the replacement bolts and affixed them so that the slot holes are basically just regular holes. I pushed the new screws down on the slot position and tightened. Now anyone that reads this I know is asking why? I'm 60 plus years old not a he-man or body builder never been actually been on the lighter side of strength. Not that I'm weak but in my day I have busted and broke things by overtightening those days are sadly gone. I did not use any extention or more commonly called a cheater bar on the allen wrench but 2 of the 4 screw heads stripped out and had to be removed with pliers. I also tried my set of allen wrenches on the screws thinking maybe cheap allen wrench no it was the screws that head that was I suspect too soft and it rounded out. Just pliers not vise grips so they were not terribly tight. I did not have to retap the holes so they were not cross threaded. 1 out of four that failed could be called a bad screw 2 out of four are cheap and not worth using and for that reason since they are a critical part of the clamp locking system I decided to get hardened screws which will probably not strip out or break the threads in the plate would probably tear out first and that would take some real doing. Outside of those screws and the expected failure of the cable holding plastic part that sits on the back of the clamp to hold cables and makes a nice place to store the allen keys to adjust the arm if needed that was a nice touch this thing is rock solid. Solution for the plastic cable holding part is simple a cable tie holds that in place yes it maybe a touch tacky but oh well hang me for wanting it to stay in place. Yes, I would recommend this to someone and have Yes, I think it is a good value Yes, I think it is going to last a long time and the gas shocks seem to be strong Yes, I would buy this again. No, I do not think the problem I had should deter anyone from buying this just be aware that these screws might be soft and probably should be upgraded before assembling this thing the first time. I would if the manufacture reads this recommend that they take a real good look at those screws and maybe see about getting a better grade. No I do not blame them they buy stuff and maybe not even be aware that the screws have a fair possibility of stripping out. But when someone puts $800.00 plus dollars on this it would really be stupid to have the problem I had and trust the other 2 screws to hold since I could not get 2 of them to tighten enough to take the wiggle out of the assembly.
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Reviewed in the United States on May 7, 2020

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