1980 and 1981 NON Turbo 300D, 300CD Transmission Red Modulator - USED

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LAST ONE WE HAVE. No longer available new - super hard to find and a must for shifting of these transmissions! - may fit some 1980 -81 240D

This was a new replacement unit only on the car for about five years before the 1980  transmission was removed. RED MEANS RED. Only works if your current transmission has a red modulator THAT LOOKS EXACTLY LIKE THIS ONE. Will also work on some 80-81 W123 240's.  Kent installed a new cap o-ring and thoroughly bench tested this unit. To get this to work right you MUST understand how the vacuum system works on those models.  It is VERY FINICKY!.  SEE MY manual below.

1980 and 1981 NON Turbo 300D, 300CD Transmission Red Modulator - USED
$326.00
SKU:
USED-REDMODULATOR

Product Details

On the 1980 and 1981 non-turbo models, there is no Bowden cable or pressure control rod to control shifts. Everything is controlled by the modulator - both shift timing and smoothness. If your modulator has failed you will never get the transmission to shift properly!

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Receive two related On-Demand videos FREE! Covers ALL Diesel Automatics from 1969-1984 220D 240D 300D 300CD 300TD 300SD

I have received so many emails on this topic that I had to sit down and write a very detailed manual over 130 pages in length!  Let's face it! Diesel automatic transmissions can be troublesome, particularly those models that use vacuum to control shifts.