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Old 03-09-2001, 02:02 PM
Mike Murrell's Avatar
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Join Date: Feb 2000
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I normally use Mahle-Knecht or Hengst Oil Filters since that's what most local parts shops carry. The other day I was sold a Mann W719/5 for my '91 300-SEL. I seemed to recall having seen a different Mann part # for my car.

Got on the WEB and did some digging. Sure enough, the M103 motors use Mann Oil Filter W719/13; not W715/5. What's interesting is that the Mann W717/5, W719/13; W719/15 are identical in length and O. D.

I suppose the difference has to do with bypass valves/check valves, etc.

What affect would it have to run a Mann W719/5 or W719/15 on an M103 motor vs. the prescribed W719/13? I have no intention of doing so. I'm simply curious about the internal differences. Thanks for your time.
Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
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Old 03-09-2001, 05:47 PM
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
The W719/13 is a MB OE quality filter with correct burst pressure & anti-drain back valve. The W719/5 is a VW filter & doesn't come close to having the correct check valve! The W719/15 is a BMW filter & has different check valve also. MB requires the W719/13 due to fact it's upside down.
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Old 03-10-2001, 12:22 AM
Mike Murrell's Avatar
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Join Date: Feb 2000
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M.B. Doc

Thanks for the insight.
Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
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