Does anyone have any information on the RS5F51A transmission? Is it a manual or automatic? Is it a limited slip transmission or non-limited slip transmisison?

 

from the web site Monster Transmission & Performance
http://monster-transmissions.com/pro...ucts_id=160837

Year: 2003
Make: NISSAN
Model: ALTIMA
Engine: L4 2.5L 2500 GAS FI VIN:
VIN ( 8th from the end):
Drive: FWD
Transmission: RS5F51A
More Information:
RS5F51A 5 Speed 320108J206 Non-Locking Differential

 

^ To clarify, it's the open 5MT used in both the QR25 and VQ35 Altima. If you found one without a reference to the donor vehicle, you'll want to contact the seller to confirm which engine it bolts up to, as they have the same PN. Similarly the helical LSD 6MT from your Maxima, which is RS6F51H (and the one you're probably looking for), shares the same PN with the Sentra SE-R Spec-V (QR25).

On a side note, reading some of these transmission codes is often simple. For the ones relevant to us, the 3rd character refers to the number of forward gears, the 4th character refers to the transmission layout (FWD or RWD, and if the last character is a H or V, then it refers to a helical or viscous limited-slip differential, otherwise it is a revision denominator. Many other ones are coded differently, though.

 

looks like someone at nissan messed up then. I am looking at a vin tag for a 04 maxima and it says RS5F51A. When they run the vin for the car is comes back saying 04 with 6mt tranny

 

It is a 5-speed manual transmission with a limited-slip differential. These were put in the 2001 Nissan Maxima Anniversary Edition, and also some Infinity I-30 (I think).
.

 

wrong. as previously stated the A is an open diff.