J-48641 Ring Gear Stopper NI-48641

Required to hold the engine stationary while tightening the harmonic balancer to specs.

Use J-44716 or J-50288 on 3.5L VQ35DE. (Workshop manuals are often wrong regarding this job. You'll need to contact us with the VIN so we can look for any ring gear TSB's to determine which of the two tools you'll need.)
Use J-48641 on 3.5L VQ35HR & 3.7L VQ37VHR.
Use J-44716 or J-48761 on 4.0L VQ40 & VQ40DE. See TSB Ring Gear. (Workshop manuals are often wrong regarding this job. You'll need to contact us with the VIN so we can look for any ring gear TSB's to determine which of the two tools you'll need.)