P30 GM 12551593 6.5 DIESEL THERMOSTAT CROSSOVER HOUSING

[DreAudet]

Searching for P30 GM 12551593 6.5 DIESEL THERMOSTAT CROSSOVER HOUSING

 

[MrMarty51]

Searching for P30 GM 12551593 6.5 DIESEL THERMOSTAT CROSSOVER HOUSING

Is that the dual stat crossover ?

 

[DreAudet]

Is that the dual stat crossover ?

It’s a one piece duel thermostat, not a two-piece. It specific to the P 30 chassis it routes to the front rather then towards the cab. Allowing room for a mechanical injector throttle bracket but also 96-up serpentine sys.

 

[MrMarty51]

It’s a one piece duel thermostat, not a two-piece. It specific to the P 30 chassis it routes to the front rather then towards the cab. Allowing room for a mechanical injector throttle bracket but also 96-up serpentine sys.

I wonder how rare that is ?

 

[Will L.]

They are hard to find. there are two versions of it but idk which is which, iirc they are numbered differently.
Note the 4 bolts for the thermostat housing. One style has a bypass (block off) thermostat and the other does not. For obvious reasons the block off is the one everyone preferred.

@DreAudet if you cant find one, note the link in my signature for another option to clear everything and end up with a bypass style thermostat.
Hope ya find the one you want.