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GM 12458079
Front Cover, Rear

1997-2010 GM

Customer Questions & Expert Answers (15)
GM 12458079 Front Cover, Rear
  • Part Description
    Cover, Rear Axle Housing
  • Position
    Rear
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number12458079
    Part DescriptionCover, Rear Axle Housing
    Item Dimensions8.9 x 9.0 x 1.2 inches
    Item Weight0.70 Pounds
    PositionRear
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU12458079
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65
  • Vehicle Fitment

    Year Make Model Trim Engine
    2004-2009 Cadillac XLRBase, Platinum, V8 Cyl 4.4 L GAS, 8 Cyl 4.6 L GAS
    1997-2010 Chevrolet Corvette427 Limited Edition Z06, 50th Anniversary Edition, 50th Anniversary Edition Pace Car, Base, Grand Sport, Indianapolis 500 Pace Car, Z06, ZR18 Cyl 5.7 L GAS, 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS, 8 Cyl 7.0 L GAS
  • Customer Questions & Expert Answers

    Q:
    Is this 12458079 designed for my car? Posted by ChevyPartsGiant Specialist
    A:
    Please Select Your Vehicle model to see if part number 12458079 is suitable before ordering.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to replace the LH Differential Cover and seal on Cadillac XLR? Posted by Customer
    A:
    To replace the Differential carrier cover and seal on the left side; one should begin by lifting and supporting the vehicle. Remove the lh rear tire and wheel assembly, then the lh wheel drive shaft, and the lh Muffler assembly. Drain the Differential fluid from the Differential and then mount the Differential and remove the Differential mount from the left side. At this point, use a degreaser to clean the area around the Differential cover of any dirt/debris and then unscrew the two bolts holding the Differential cover onto the body and knock out the dowel pin to release the cover. Make sure you don't lose the magnet located at the bottom of the Differential case, and remove and dispose of the o-ring seal and the axle seal from the Differential side cover. Clean the o-ring sealing surface of the Differential cover and the Differential housing, and insert the new o-ring seal to the Differential cover. Replace the Differential cover, insert the dowel pin, and tighten the cover with retaining bolts to 28 n.m (20 lb ft). Tigten bolt retaining the left Differential mount of 50 n. M, (37 lb ft). Install the axle seal to the Differential cover using the j 46405 output shaft seal installer. Replace the Differential with the right fluids to the appropriate level, and reinstalling the lh Muffler assembly, the lh wheel drive shaft, and the lh rear tire and wheel assembly then dropping the vehicle.
    Posted by ChevyPartsGiant Specialist
    Q:
    What tool is used to install the axle seal into the differential cover for the 2009 Cadillac XLR? Posted by Customer
    A:
    J 46405.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Differential Cover
    Q:
    How do you measure the new differential cover bore dimension for the 2008 Cadillac XLR? Posted by Customer
    A:
    Use a vernier caliper, a straight edge, and J 42168-16 Spacers, recording this as value A.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Differential Cover
    Q:
    How do you remove the differential cover for the 2005 Cadillac XLR? Posted by Customer
    A:
    Remove the two bolts retaining the differential cover and push out the dowel pin, then carefully take off the differential cover.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Differential Cover
    Q:
    What is the torque specification for the left differential mount bolt for the 2004 Cadillac XLR? Posted by Customer
    A:
    Tighten the bolt retaining the left differential mount to 50 Nm (37 ft. lbs.).
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Differential Cover
    Q:
    How do you compare the new and old differential cover bore dimensions for the 2007 Cadillac XLR? Posted by Customer
    A:
    Repeat the measurement for the old differential cover bore dimension, recording it as value B, then subtract value B from value A.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Differential Cover
    Q:
    What should be done to the area around the differential cover for the 2007 Cadillac XLR? Posted by Customer
    A:
    Clean any dirt or debris from around the differential cover.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Differential Cover
    Q:
    What are the final steps before lowering the 2010 Chevrolet Corvette? Posted by Customer
    A:
    Reinstall the LH muffler assembly, the LH wheel drive shaft, and the LH rear tire and wheel assembly.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Differential Cover
    Q:
    What needs to be done with the differential fluid for the 2010 Chevrolet Corvette? Posted by Customer
    A:
    Drain the differential fluid.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Differential Cover
    Q:
    What should be removed next for the 2004 Chevrolet Corvette? Posted by Customer
    A:
    The bolts retaining the differential cover and the transmission vent tube retainer, then take off the differential cover.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Differential Cover
    Q:
    What is the first step to replace the differential carrier cover and seal on the left side for the 2005 Chevrolet Corvette? Posted by Customer
    A:
    Raise and support the vehicle.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Differential Cover
    Q:
    What is the first step in the replacement process for the 2007 Chevrolet Corvette? Posted by Customer
    A:
    Remove the right rear wheel drive shaft and the right rear muffler assembly, then drain the differential fluid.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Differential Cover
    Q:
    What tools are needed to replace the differential carrier cover and seal on the right side for the 2006 Chevrolet Corvette? Posted by Customer
    A:
    DT-47596 (Bearing Cup Remover), J 42170 (Bearing and Race Installer), J 45124 (Removal Bridge), and J 46405 (Output Shaft Seal Installer).
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Differential Cover
    Q:
    What should be done before removing the differential cover for the 2008 Chevrolet Corvette? Posted by Customer
    A:
    Clean any dirt or debris from around the differential cover (left).
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Differential Cover
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

OEM GM 12458079, Excellent Performance and Perfect Fitment

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