2004 Toyota Sienna - Pinion Seal

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Precision Multi-Purpose Seal - 710594
Part #:
710594
Line:
PSO
11.99 Each
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Differential Pinion Seal   Rear
3 Year Limited Warranty
Inside Diameter (in):   1.496 Inch
Inside Diameter (mm):   38mm
Outside Diameter (in):   2.567 Inch

MasterPro Multi-Purpose Seal - 1177
Part #:
1177
Line:
MPS
9.99 Each
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Pinion Seal   Front Outer; 7.5 Inch Ring Gear
1 Year Limited Warranty
Housing Bore (in):   2.913 Inch
Housing Bore (mm):   74mm
Inside Diameter (in):   1.496 Inch

MasterPro Multi-Purpose Seal - 710594
Part #:
710594
Line:
MPS
9.99 Each
Availability Controls for MasterPro Multi-Purpose Seal
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Pinion Seal   Rear Outer
1 Year Limited Warranty
Housing Bore (in):   2.559 Inch
Housing Bore (mm):   65mm
Inside Diameter (in):   1.496 Inch

MasterPro Bearing/Seal Wheel Bearing And Race Set - A35
Part #:
A35
Line:
MPB
26.99 Each
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Axle Differential Bearing   Rear; 6.7 Inch Ring Gear
1 Year Limited Warranty
Bearing Type:   Tapered
Inner Race/Cup Width (in):   0.770 Inch
Inner Race/Cup Width (mm):   19.56mm

Corteco Multi-Purpose Seal - 49442396
Part #:
49442396
Line:
CCO
8.99 Each
Availability Controls for Corteco Multi-Purpose Seal
Differential Seal   Rear; All Wheel Drive; OE Number: 90311-35032
1 Year Limited Warranty

Precision A/T Pinion Bearing - M86649
Part #:
M86649
Line:
PRB
14.99 Each
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Multiple Applications
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3 Year Limited Warranty
Bearing Type:   Tapered
Bearing/Cone Inside Diameter (in):   1.188 Inch
Bearing/Cone Inside Diameter (mm):   30.163mm

What Is A Differential Pinion Seal?

A pinion seal is located in rear-wheel drive differentials and prevents gear oil from leaking past the pinion shaft. Differential fluid is a grease that helps lubricate the differential's gears and bearings for proper vehicle performance. The pinion seal is installed in the differential housing, and the pinion shaft is inserted through it to ensure that it can seal properly as the driveshaft and pinion rotate. This may require resetting the pinion preload and removing and reinstalling other parts of the differential, so it is often a good time to also replace parts like axle seals and bearings, differential cover gaskets, and more to ensure a complete repair. Signs that you may need a new pinion seal include a howling or whining noise while driving, low differential fluid or gear oil levels, or small leaks underneath your vehicle's rear axle. Inspecting the axle housing can help you determine the source of the leak so that you can make an appropriate repair. Maintain a healthy, functioning differential with pinion seals, differential fluid, and more from O'Reilly Auto Parts. You can also learn more about how to change rear differential fluid with our How-To Hub resources.