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K40 Relay on an R170 SLK

gbjeppm

MB Enthusiast
Joined
Oct 31, 2006
Messages
1,782
Location
Surrey
Car
C207 E Coupe 350cdi, W166 ML 250 Cdi Sport, R171 SLK 350, Suzuki V Strom DL650
Hi All,

Does anybody know if these K40 relays with different part numbers are interchangeable?

I removed from the car A1705450305

Searching ebay for the K40 relay also brings up part number:

A1705450205

and

A2105400072

They all look identical, image is for reference.
The one that i have seems to be much less available and more expensive, hence I am asking.

Cheers
Matt

s-l1600.jpg
 
Hi, was this question ever answered ? I have 230SLK 1999 with part number a2105400072, and have been given a spare K40 but from a 320, part number a1705450305.
Looks identical inside and out. Appreciate any expert advice or comments. Thanks
 

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