Union Auto Service
“My first time there and they treated me like a long term client.”
Best Radiator Repair in Union, NJ
15 technicians listed · all 15 in Union · 13 open weekends · 11 rated 4.5+
Data verified October 16, 2026
Belford Auto Medix
“The pricing is super reasonable, they always call to confirm any additional work that has to be done before proceeding, and they are accommodating to your busy schedule.”
Clarke's Auto Repair
“Hard to find great mechanics and i thank God for them everytime i have to see them!!”
Legacy Mechanics
“The price was definitely reasonable I am happy to say Flexxy feels brand new again, Thank you so much gentlemen, I will definitely recommend your shop.”
Santos Service Center
“Carlos does this for me, all the while explaining my issues thoroughly and without coming across as condescending.”
Good Guys Auto Service & Repair LLC
“Martin and his team are honest men and helped me with no hassle.”
Listed for drivers in and around Union, NJ, these 15 shops repair and replace radiators and cooling system parts. What each one says about recoring, warranties and truck work comes from its own website; ratings and quotes come from public reviews.
Area overview: Union, NJ
All 15 technicians we list here are in Union itself. The technicians on this page are rated from 4.0 to 4.9 across 662 reviews; 6 have 50 or more reviews and 11 are rated 4.5 or higher. The topics that come up most in reviews of the technicians on this page are "price" and "fair". 13 are open on Saturdays. 3 have a BBB rating of A or A+. 8 have ten or more years of experience, the longest 59 years. 1 offers financing. We have a website on file for 4 of the technicians on this page; 1 publishes a contact page and 1 lists a public email. We count these figures across the technicians on this page; hours and prices change, so confirm the details with the technician before you visit.
Are the longer-established listed shops a safer bet?
8 of the 15 shops here have been trading ten years or more. Radiator work rewards that, since the places that still recore and pressure test in house tend to be long-established and often run commercial vehicle work alongside cars.
Dn&o Auto Repair LLC
“Omar was able to replace my Torque Converter, Axles, & provided me with an Oil Change, as well as check on updates needed for my vehicle.”
Randy's Tire Shop LLC
“Randy explained to me in great detail what the issue was with my car and the reason why my check engine light had come on”
Barry's Auto Center
“I have had nothing but EXCEPTIONAL SERVICE and expertise that I have trusted from my 1st visit in June 2018.”
Stuyvesant Auto Repair
“Alot of mechanic was telling it was my A/C Compressor (to take more money out of me) but Umar was honest and told me the real reason why my a/c wasn't blowing air, which was my fan”
Spruce Garage
“Not only did I get great service, good communication, reasonable pricing, they told me I only needed the front ones done.”
Chavez Auto Center LLC
“Best mechanic around in union NJ”
Joe's Auto Repair
“I won't be going to anyone else but Joe for our families car needs.”
Claudio's Auto Repair
“Women if you want a great mechanic come here.”
Josil Auto Repair
Why these companies made our list
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