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#1
10-25-2013, 04:33 PM
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1991 190E under the hood
Hi All,
Can some tell me what is this part? It's leaking coolang at one of the four philips screw behind the unit. It attaches to the collant passage from the water pump and the goes into the bulk head I presume it goes into the heater valve. Thanks in advance Ariel 
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#3
10-25-2013, 09:04 PM
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Depends on where you are located you can just remove it. I think its purpose was to increase coolant flow to the heater core faster in cold climates. I removed mine
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 1990 190E 3.0L
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#5
10-26-2013, 04:30 PM
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I replaced mine on my 300D. I had lost heat when I was at a low speed.
I dont know how but, somehow I managed to buy one for $67. Everywhere I look now they are 200+! Parts Ordered 1991 Mercedes 300D Auxiliary Water Pump Cooling System Price: $67.10 Core: $0.00 Qty: 1 Part #: W0133-1803329
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Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out. Check here for compatibility, diagnostics, and availability! (4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!) 82 300SD 145k 89 420SEL 210k 89 560SEL 118k 90 300SE 262k RIP 5/25/2010 90 560SEL 154k 91 300D 2.5 Turbo. 241k 93 190E 3.0 235k 93 300E 195k
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