[Pathung]

My 195K-mile '05 6MT has a tendency to overheat a bit on steep and sustained 4-Lo climbs, so I'm thinking that it may be time to swap out the old factory radiator for a new one. I did a search on RockAuto, and didn't see one that specifically specified "Manual-Transmission", though there was one (or two) specifying auto-transmission. Did Nissan use different radiators for auto vs. manual-transmissioned trucks? If not, are AT fluid inlets/outlets on the radiator simply capped off on an MT truck? I don't have an AT truck near me, so can't see if it looks different from mine. Mine's an '05, so it may also be different from later ones.

Thanks in advance for any comment/input.

 

[shift_RUSH]

Stillen aluminum rad FTW.
.02

 

[Pathung]

Stillen aluminum rad FTW.
.02

Thanks.

The Stillen website offers two aluminum performance radiators: a CSF and a Spectra, neither of which specifies transmission type for a 2005. This seemingly points to 2005 AT/MT trucks using the same radiator.

 

[smj999smj]

The CSF is the all-aluminum radiator at Stillen. The Spectra Premium is a regular, plastic-tanked radiator which you can get at Rockauto for less money. If you don't mind spending $350 (compared to around $110 for a plastic-tanked radiator), then the CSF from Stillen is the way to go.
Aftermarket radiators have integral trans coolers and are designed to be used with either transmission (just leave the caps on the cooler fittings).

 

[Skibane]

If not, are AT fluid inlets/outlets on the radiator simply capped off on an MT truck?

Correct.

There's no harm in leaving the ATF cooler unused in MT vehicles, and it saves parts suppliers the added expense of building and stocking two different parts.