®
Audi 4 Cyl.
Audi 6 Cyl.
BMW 4 Cyl.
BMW 6 Cyl.
BMW 8 Cyl.
Cadillac Northstar
Chevy/GM 4 Cyl.
Chevy/GM 6 Cyl.
Chevy/GM 8 Cyl.
Chrysler 4 Cyl.
Chrysler 6 Cyl.
Dodge 4 Cyl.
Dodge 6 Cyl.
Dodge 8 Cyl.
Ford/Mazda 4 Cyl.
Ford/Mazda 6 Cyl.
Ford 8 Cyl.
Turbo Diesel Truck v8 Kit
Honda/Acura 4 Cyl.
Honda/Acura 6 Cyl.
Hyundai/Kia 4 Cyl.
Hyundai/Kia 6 Cyl.
Jaguar 4 Cyl.
Jaguar 6 Cyl.
Jaguar 8 Cyl.
Jeep 4 Cyl.
Jeep 6 Cyl.
Jeep 8 Cyl.
Land / Range Rover
Toyota / Lexus 4 Cyl.
Toyota / Lexus 6 Cyl.
Toyota / Lexus 8 Cyl.
Mitsubishi 4 Cyl.
Mitsubishi 6 Cyl.
Mercedes 4 Cyl.
Mercedes 6 Cyl.
Mercedes 8 Cyl.
Nissan/Infinity 4 Cyl.
Nissan/Infinity 6 Cyl.
Porsche 4 & 6 Cyl.
Subaru 6 Cyl.
Volvo 4 Cyl.
Volvo 6 Cyl.
V.W. 4 Cyl.
Semi-Truck Diesel Kit
Tractor / Loader
Universal Kits
Extreme Sealer Additive... Stays flexible when cured and lasts up to 5 years! No-clog formula... Repairs internal & external leaks... No side-effects!
ON SALE: $139.99 +2-3 Day S/H
ON SALE: $119.99 +2-3 Day S/H
ON SALE: $129.99 + 2/3 Day S/H
No need to flush after use! Hi-Strength Transmission Stop-Leak is 45% stronger than store-brands! No-clog,
easy pour-n-go formula...
8oz. Bottle for use in transmissions with any type of severe leaks.
codes! Turn-off trouble lights... This a great tool to own. Every toolbox should have one! Simple to use. Just plug-in and read your engine codes.
ON SALE: $69.99 (ships FREE)
OBDII & CAN ready,
works with all 1996
and newer vehicles.
Read & erase any

One application lasts for years! Easy to use, just pour-n-go. Starts working ASAP and totally quiets things down in about 125 miles of normal driving...
ON SALE: $59.99 + 2-3 Day S/H
Quiet's noisy lifters fast & easy! Stops noise other brands can't touch.

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On Sale: $52.99 + 2-3 Day S/H
If oil in the water or water glass sealer in system. Be sure to use this first!!!
ON SALE: $19.99 + 2-3 Day S/H
Concentrated 16oz. bottle...
ON SALE NOW: $109.99 +S/H
Leaking coolant from your radiator, heater-core or engine block?
This is a non-clogging, leave-in sealer that works fast, lasts up to 4 years (32oz.).
Just pour-n-go, leave-in formula!
Not for head gasket leaks due to
curing temperature difference...
ON SALE NOW: $59.99 +S/H
dura seal head gasket reapir
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Sales & Tech Dept: 706-400-0897
Customer Service: 706-400-0067
Available: Mon- Fri. 9am to 5pm EST.
Order online 24/7
Shopping cart
Dura-Seal® Head Gasket Repair Sealers are specially formulated for
your individual engine! We do not use "water-glass" in our sealers, so we can
customize our sealers to your specific engine's temperature at the cylinder head!
This means our sealer only cures in your engine's head gasket area not the radiator 
or heatercore. With Dura-Seal® there's no chance of clogging or curing in other areas. 
Our Dura-Seal® works with aluminum & steel and stays flexible! So if you have
a Cadillac, Subaru, Volvo, BMW, or any other engine with aluminum components
Dura-Seal® is your best choice. << Simply pick your vehicle from our list!
Dura-Seal® is the only non-silicate sealer available and doesn't turn to glass when cured! It stays flexible to expand and contract with your engine. Advanced chemistry & inherent flexibility offers our customers success rates over 98% on the first application, and average repair-life of up to 5 years...
If you don't get a "full-seal" on your first application, call us and we'll send you another free bottle to get you to the finish line,
(shipping, handling, other may apply, see terms for more).
Idle engine for 20 minutes then turn off and let cool for 20 minutes, repeat this run-cycle three times. Next, drive vehicle for 20 minutes with sealer in system. Then, drain Dura-Seal® out, (it's not required to flush Dura-Seal out, just drain), later refill with coolant and Dura-Seal® Liquid-Ice. First-time applications have a 98% success rate. Only 2% require a second *free application, (*which is covered under warranty). Typical repair-life is 5 years.
Drain coolant system and run clean water through entire system. This will remove most contaminates. If you've used a water glass/silicate based sealer prior to using Dura-Seal®, you will need to purchase our "Water-glass Flush Agent" before using our sealer.

It's not required to remove the thermostat as our sealer cannot cure or clog that area, but, if left-in, it will slow the process by restricting flow. Next, pour the Dura-Seal, and Extreme Powder Pack into the radiator, (no radiator cap?) disconnect upper radiator hose from engine and pour sealers into hose (they will flow to radiator). Top-off with water.
Extreme Sealer Additive... Stays flexible when cured and lasts up to 5 years! No-clog formula... Repairs internal & external leaks... No side-effects!
Extreme Sealer Additive... Stays flexible when cured and lasts up to 5 years! Repairs internal & external leaks. No-clogging.
Aluminum & Steel
For all
4 Cylinder
Works with all synthetic oil, conventional and diesel oils! This Hi-Strength Oil Stop Leak stops leaks other sealers can't even slow down...
On Sale: $62.99 + 2-3 Day S/H
Works with all synthetic oil, conventional and diesel oils! This Hi-Strength Oil Stop Leak stops leaks other sealers can't even slow down...
On Sale: $72.99 + 2-3 Day S/H
Works with all synthetic oil, conventional and diesel oils! This Hi-Strength Oil Stop Leak stops leaks other sealers can't even slow down...
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8oz. Bottle may vary from picture.
8oz. Bottle may vary from picture.
8oz. Bottle may vary from picture.
On Sale: $39.99 + 2-3 Day S/H
If your transmission causes your car to jerk forward and back during take-off of slow down, our Shutter-Stop is the fast & easy answer...
8oz. Bottle! Stops gear jump or kick and shuttering...
Just add and go...
On Sale: $39.99 + 2-3 Day S/H
Will also repair any slow gear shifts or gear-fade during take off or slow down. Lasts up to 2 years. No-clogging formula.
Easy pour-n-go...
8oz. Bottle! Will restore lost "reverse", "first", "overdrive".

On Sale: $39.99 + 2-3 Day S/H
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If you have used any other sealer before DuraSeal be sure to flush the water-glass out of the system first!
Leaking coolant from your Intake Manifold?
4, 6, & 8 Cyl. engines. Used safely on aluminum, steel, or plastic intakes...
New Reviews
Made for Subaru
engines! Incudes;
32oz. Sealer, 16oz.
Liquid-Ice and
Made for Northstar
engines! Incudes;
32oz. Sealer, 16oz.
Liquid-Ice and
Made for Subaru
engines! Incudes;
32oz. Sealer, 16oz.
Liquid-Ice and
Non-Thickening! Will
causes seals to expand
to their original size.
6 Cylinder
8 Cylinder
Non-Thickening! Will
causes seals to expand
to their original size.
Non-Thickening! Will
causes seals to expand
to their original size.
Subaru 4 Cyl.
Saturn 4 Cyl.
Saturn 4 Cyl.
Chevy/Buick 4 Cyl.
Chevy/Buick 6 Cyl.
Audi 6 Cyl.
Shopping Cart
*Money Back applies to all
Universal Head Gasket Searlers only
Dura-Seal customizes each sealer kit to your engine's unique temperature, (at the cylinder head). This insures our sealer will only bond to the head gasket area. Dura-Seal simply can't cure in a radiator or heater-core, it's just not hot enough there. No clogging or curing in other areas...

Don't see your vehicle listed above, call us, we'll custom formulate a kit for you... Checkout some customer videos >>
Universal Kits
Only Dura-Seal® does not use water-glass and silicates as a base ingredient. So, you never have to worry about clogging or harming your engine when using our sealers. All other sealers on the market like; Barz, Blue Deviil, Steal Seal, Thermogazket, NanoTechnology, CRC and more use water-glass & silicates which can harm your engine...

Dura-Seal
® is simply more advanced than other brands. We custom formulate your kit to cure at your engine's temperature at the cylinder head. This prevents our sealer from curing in other areas, It can only cure in the cylinder area based on temperature. No other brand can offer you that! We have a *Money Back Guarantee and provide you with a Free Replacement Warranty if you need more sealer to then typical to achieve a full-seal, (*certain conditions like S/H may apply, see Terms). So if you don't get a full seal, call us and we'll send you another free application to get you to the finish line...
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Our sealer only cures at the higher temps of head gasket area, (over 250+). Not the radiator or core. That's why we offer Kits
for different vehicle's running temperatures.
You don't have to modify the coolant system by cutting any hoses or remove spark plugs to get Dura-Seal to work...
Only 2% require an additional *free application (*covered under warranty) to get a full seal. So if you need more sealer than typical to get you to the finish line, just give us a call...
Most vehicles like Cadillac, Subaru BMW and newer GM's have aluminum heads and normally run at up to 230 degrees! Water glass sealers would cure everywhere at those temperatures.
Brands like Thermogazket and Steal Seal want you to cut your radiator hose in half and install a special vent to allow the pressure in the system to escape. The-Big-Question, why would you need their vent if their sealer is supposed to seal the gasket and  prevent the coolant system from over pressurizing in the first place? Other brands like Blu-Devil and  Heel-A-Seal want you to figure out which cylinder is the bad one and remove the spark plug. Bad idea, the piston can slap the valves...
Click To Listen
Click To Listen
Click To Listen
Click To Listen
Turn speakers "ON", adjust volume. Works with Windows & Quick Time Players. *You must "Allow" Windows "add-on" for Media Player to download if asked. Enjoy...
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Fun FACT #1
Fun FACT #3
Fun FACT #2
- click-on video's below to view -