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Old 06-26-2019, 05:20 PM
Registered User
Join Date: Nov 2006
Posts: 163
1984 300CD, auto, best replacement radiator brand

Has anyone had good or bad experiences with particular brands? I don't want to replace it again for a few hundred thousand miles more.
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Old 06-26-2019, 09:07 PM
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Join Date: Oct 2007
Location: Greater Metropolitan Beaverdam VA
Posts: 2,360
I replaced my 300CD radiator with a Nissens. It is a Danish company and one of the few that make radiators for our cars. Been 5 years so far with no problems. Made with reinforced hose necks. Looks better quality than the original.
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Old 06-27-2019, 06:23 AM
Bengoshi2000's Avatar
1991 300D 2.5 Turbo
Join Date: Jan 2011
Location: NC, USA
Posts: 267
I've put Nissens radiators in two cars (my 1991 300d and the wife's Honda). No problems with either one.
1991 300D 2.5
2002 Golf TDI
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Old 06-27-2019, 10:09 AM
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Join Date: Apr 2011
Location: Toronto, Canada
Posts: 269
-Nissens - high end brand
-BEHR - OEM pretty much - high end
-Spectra Premium - Chinese but has quality control and ISO certified - Got mine for like $130, 3 years in, no issues
-Chinese no name brands like ECC from rock auto - I would never use these.
1976 Mercedes 240D (Sold)
1985 Mercedes 300D Turbo Diesel: 500,000KM
1986 Mercedes 300E (Sold)
1988 Mercedes 300E (Sold)
2002 Mercedes C240 (Sold)
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Old 06-27-2019, 11:37 AM
vwnate1's Avatar
Diesel Dandy
Join Date: Nov 2005
Location: Sunny So. Cal. !
Posts: 4,383

Agreed that Nissins is the best way to go easily .

BEHR is OEM -but- they also use that damn bio degradable German plastic crap that causes the upper hose nipple to detach without warning for no apparent reason .

I was lucky when this happened on my '82 240D ~ I was in town and it left *barely* enough of a stup that I could re attach the hose to it and carefully motor on home .

I got a brass Chinese radiator at a junkyard and had a custom core installed, so far so good but it was a bit of a PIA and I don't see many W123's in the yards like I used to ten years ago .

If your current radiator isn't leaking or broken, cleaning it with the citric acid and water mix really works well and brings the entire cooling system up to snuff at the same time .

It takes a fair bit of time & effort to do it properly on the average well clogged cooling system but you'll love driving in Death Valley with the AC going and the temperature gauge not exceeding 85* C.....
1982 240D creampuff 370,000 miles
1978 300CD back from the dead&1980 300CD ~ SOLD
1984 300CD KEEPER ! 440,XXX miles
1984 Euro 300TD Fully optioned SWMBO's
1974 350SLC 4 speed stickshift SOLD & missed
Krazy Kommie Ural Motos (3)
BMW Moto R60/6 Barn Find, 8,000miles
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