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6.5TD C/K Trucks  >  Emission Control Components  >  6.5TD Crankcase Depression Regulator Valve

CDR Valve for all 6.5 TD's 92-02

6.5TD Crankcase Depression Regulator Valve

6.5TD Crankcase Depression Regulator Valve

Model: ssd-706 $92.98 $89.99
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Crankcase Depression Regulator Valve or CDR Valve for all 6.5 Turbo Diesels 92-02. This valve is similar in function to a PCV valve in a gas engine. On a diesel, the CDR valve regulates the amount of pressure or blowby from the crankcase back to the intake thru the turbo. This is a maintenance item and should be replaced every 30K miles as recommended. 6.2/6.5 diesels need to run a slight vacuum in the crankcase and this valve regulates that.

This valve is located on the right hand valve cover (passenger side) and has a hose connection back to the inlet. If you have excessive oil around your turbo, it is probably a sticking CDR valve. When this valve fails, you will see oil in your turbo and intake manifold and higher oil consumption. Likewise excessive external engine oil leaks due to pressurizing the crankcase.  Installs in minutes.

AKA: Tuna Can

I also suggest replacing the CDR valve grommet ssd-3122 and CDR connector hose ssd-4603 if any signs of leakage or as good preventative maintenance.

6.5TD Crankcase Depression Regulator Valve

 

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