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Old 08-13-2019, 08:07 AM   #1
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ABS Module valve replacement

Does anyone if the ABS modulator valves from bendix are interchangeable. My valve cracked on the bus and it has no part #'s. I am wondering if the connection airports are the same, as well as the electrical connector, and it is a 12 volt valve are they interchangeable. can i put on a M-30, M-40, ect?
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Old 08-13-2019, 09:04 AM   #2
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ism minerals
The newer versions of Bendix Modulators are backward compatible.
There are many combinations of inlet and outlet connections, as well as several electrical connectors and voltages.
Bendix recommends one replace both modules on the axle to assure proper balance in operation.
I lost a modulator on my 2001 GMC C7500 truck when it froze and split apart.
I was able to find newer modulators similar to my obsolete cracked modulator on eBay for short money. The air plumbed right up and the harness plugged in without modification. The newer modulators function perfectly.
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Old 08-13-2019, 09:17 AM   #3
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Thanks Phantom,



Called bendix and they stated the same, replace both if upgrading to a newer style. I just missed some really inexpensive ones on eBay. Voltage and connection styles are the differences between the part numbers. they also have HF and QR, the HF type are for two axles, where as the QR are for single axles.
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