Thermagasket Cadillac Northstar Repair Kit
Thermagasket Cadillac Northstar Repair Kit
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The Thermagasket Guarantee
Follow the instructions. If it doesn't fix your leak, tell us within 30 days of delivery and we'll refund your purchase price. To make a claim, email Thermagasket@gmail.com with your order number, your email, vehicle year and engine, the symptom you had, the date you installed it, confirmation that you followed the instructions, and a photo or short description of the result. We'll review it promptly and reply by email. If we need you to send anything back, we'll tell you exactly what and arrange the return shipping with you.
Includes: Cooling System Equalizer Kit & Thermagasket Head & Block Treatment Kit
The Thermagasket Cadillac Northstar Repair Kit is designed to address common cooling system vapor locking and head gasket failures on these engines.
These engines often face progressive issues. Some vehicles fail before 50,000 miles, while others last 150,000 miles before showing symptoms.
We have observed a pattern of failure after assisting in thousands of repairs. These issues often lead to costly engine replacements.
- Unexplained coolant loss with no visible leaks.
- Sporadic overheating spikes during freeway driving or climbing hills.
- Ineffective part replacements by mechanics.
- Incorrect coolant circulation through the radiator.
- Replacing the thermostat, water pump, or radiator without fixing the overheat.
Often, shops diagnose a blown head gasket and suggest a new engine. This process can cost between $5,000 and $10,000 for most car owners.
Why Use a Cadillac Northstar Repair Kit?
Vehicles overheat when coolant stops circulating. The kit is designed to eliminate vapor locking and seal minor head gasket leaks.
Most Northstar leaks are minor. They typically lack oil in the coolant or white smoke from the exhaust, making them hard to diagnose.
Our Proprietary Cooling System Equalizer is designed to correct vapor locking and improve coolant circulation.
Next, the Thermagasket Head Gasket Sealer seals the gasket.
Northstar engines run 20 to 25 degrees hotter than typical V6 or V8 engines. Our kit lowers operating temperatures by 3 to 5 degrees in total.
The kit includes specific hardware, made in the U.S.A. from 6066.058 grade aluminum alloy, with solid brass hardware and Gates high-temperature hoses. Installation typically takes about 10 minutes for a handy car owner.
Explore more - How to Use the Thermagasket Set | RXAuto
Will it work on my Northstar?
A sealant can't fix every engine failure. This kit is designed for vapor locking and minor head gasket leaks. If your engine has major mechanical damage, such as a seized engine or heavy oil in the coolant, check with us first. Not sure what you have? Email us your year, mileage and symptoms before you order and we'll tell you honestly whether this kit is a fit.
What Northstar Owners Are Saying
"The thermagasket product is a perfect 4 for 4... after 15 minutes the car 100% sealed up and now not smoking or overheating."
— Wendell
"A shop quoted $3700 for head gaskets. I used the Northstar kit and followed directions... No overheating. WOW."
— Ernie
"Estimated repair was $3200.00. Your product cost $150 plus $280.00 for installation. Savings = $2770.00."
— HW
"Cadillac wanted $5000.00 to replace the head gaskets. After installing the Thermagasket Northstar Kit, we have put over 4000 miles."
— John C
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