Toyota Sienna AWD Rear Differential Support 52380-45030

This is the front support for the rear differential on the AWD Sienna. It is a metal arm with a pressed-in rubber bushing that holds the nose of the differential to the body and stops it twisting under torque. It replaces Toyota 52380-45030.

Listed fitment: 2004-2006 Sienna CE, LE, XLE and Limited 3.3L, and 2007-2010 Sienna CE, LE, XLE and Limited 3.5L. It is only used on the all-wheel drive vans, because the front-drive vans have no rear differential.

When the bushing tears, the differential moves every time power goes to the rear wheels. You hear a clunk from the rear on takeoff or when you let off the gas, and you may feel a shudder on launch. Left alone, the extra movement puts more load on the rear driveshaft joints and the differential mount bolts.

Bench notes: support the differential with a jack before you remove the old support. Look at the other differential mounts while you are under the van, because they age at the same rate. Snug the bolts, lower the van onto its wheels, then torque them to the factory spec so the bushing is not preloaded.