1998 C43 AMG radiator leak
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Junior Member
Joined: Jun 2012
Posts: 37
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From: Coeur d'Alene, Idaho
1998 C43 AMG
1998 C43 AMG radiator leak
greetings experts - I searched for this issue and didn't find an answer previously. I have a leak on my radiator upper corner driver side right where a large hose attaches. Looks like a hairline crack that only leaks when engine pretty hot. I'll get a new pressure cap for the expansion tank, but any recommendations for a product to seal the crack from the outside? Or has anyone tried the sealant product that you pour in the fluid and it seals from the inside? Thanks for thoughts...
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Joined: Sep 2018
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1998 C43 w/ 55 swap Wavetrac LSD and 6-Speed manual
New radiator - $230 to $270 depending on MB or OEM equivalent w/ free shipping and LIFETIME warranty from FCP Euro. There's nothing that will fix that crack long term. The risk of catastrophic coolant lose is too great as aluminum block and heads don't take well to over-heating.
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Joined: Apr 2006
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From: Bay Area, CA
98 C43, 15 Alfa 4C LE, 18 Tesla Model 3 DM Perf, 08 Duc S1000, 02 Duc 998, 98 Duc 748, 01 Miata
New radiator - $230 to $270 depending on MB or OEM equivalent w/ free shipping and LIFETIME warranty from FCP Euro. There's nothing that will fix that crack long term. The risk of catastrophic coolant lose is too great as aluminum block and heads don't take well to over-heating.
MBWorld Fanatic!
Joined: Mar 2010
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From: Land of mountains, cheese, chocolate and watches
12' W204 C63 AMG coupe "T-Rex", 12' W451 Smart Fortwo Pulse (99' W202 C43 AMG + Ultima Can-Am sold)
