I just bought a Koyo, goes in tomorrow and appears to be great quality
Pros: great quality
Owner reviews for engine radiator
Manufacturers
Comparisons
Mishimoto oem replacement is cheap dependable and lifetime warranty.
Pros: cheap, dependable, lifetime warranty
Nissen OEM style replacement is good
Pros: good quality
I installed an aftermarket Nissens rad and the operating temperature dropped by 2⁰C, also great fitment and price wasn't too bad either
Pros: temperature dropped, great fitment
Vehicle:
BMW
I have been running an nrf one for four years now and it's still fine.
Pros: durable, still fine
Vehicle:
BMW
Bout to hit 300k tomorrow on my 2012 and I’ll I’ve ever replaced is the radiator and a transmission sensor. All the pulleys are oem
Vehicle:
Toyota Tundra
Mileage: 300000 km
Seems like a loose ground, my s13 did this when the grounds randomly came loose. That said my s13 cluster is so damn slow to react so I run an aftermarket gauge. I have a koyo rad which came with a slot for an aftermarket sensor.
Also i would hope it's not the case, however you mentioned this after an alternator change. I had a 96 civic with a turbo setup and I had an alternator with a failed voltage regulator, all of my aftermarket gauges and temp gauge was acting like this. I would check the volts from the alternator if this is the case, it also ballooned the hell out of my battery..
Pros: aftermarket gauge reliable, alternator voltage check
Cons: potential voltage regulator failure
Vehicle:
Honda Civic
Nissens is ok
Vehicle:
Volvo
The ~2014 Nissens, with the 15 round tube design just doesn't cut it. From what I can tell the car would've come with the 30 flat tube design. The Nissens just doesn't have enough surface area. On a hot day, with the AC going and highway speeds it just couldn't keep up.
Cons: insufficient cooling, low surface area
Vehicle:
Audi
I had a 1980 Audi 100 (5000 for the US) and the top of the radiator was plastic. I dropped a socket wrench on the overflow bib and broke it off.
Cons: fragile plastic top, easily broken
Vehicle:
Audi 100
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