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Hummer 12557583 Pilot Bearing

2006-2010 Hummer

Customer Questions & Expert Answers (2)
12557583 GM Pilot Bearing Product Photo 1 of 5
  • Part Description
    Bearing, Engine Crankshaft Clutch Pilot
  • Replaces
    12479894
  • Manufacturer
    General Motors
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  • Specifications
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  • Q&A
  • Product Specifications

    BrandGenuine Hummer
    Manufacturer Part Number12557583
    Part DescriptionPilot Bearing; Bearing, Engine Crankshaft Clutch Pilot
    Item Dimensions2.0 x 2.1 x 1.0 inches
    Item Weight0.50 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces12479894
    ManufacturerGeneral Motors
    SKU12557583
    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 Engine Important vehicle option details
    2006-2010 Hummer H35 Cyl 3.5L, 5 Cyl 3.7LCREW CAB, SUV
    2009-2010 Hummer H3T5 Cyl 3.7LCREW CAB, SUV
  • Customer Questions & Expert Answers

    Q:
    I'm wondering if this is complete and correct part for my vehicle.
    A:
    You can Select Your Vehicle to check if 12557583 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    How to inspect and replace the clutch Pilot Bearing on Chevrolet Camaro? Posted by Kapanov Y.
    A:
    The clutch pilot bearing, which supports the front of the transmission input shaft, is pressed into the end of the crankshaft. It is recommended to inspect the bearing whenever the clutch components are removed, and if there are any doubts about its condition, it should be replaced. The removal process involves taking out the transmission and clutch components, and inspecting the bearing for wear, roughness, lack of grease, or damage. If any of these issues are found, the bearing should be replaced. Removal can be done using a small slide-hammer and puller attachment. After removal, the bore and the area behind it in the crankshaft recess should be cleaned. For installation, a new pilot bearing should be lightly lubricated with lithium-based grease and driven into the recess with a hammer and a bearing driver or socket until it is flush with the surface of the crankshaft. Finally, the clutch components, transmission, and all other previously removed components should be installed, with all fasteners tightened securely.
    You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Jose / Oct 14, 2023

Genuine GM Part 12557583, the Right Choice

To ensure reliability, purchase GM part # 12557583 Pilot Bearing. It is sometimes referred to as Hummer Pilot Bearing. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific Hummer H3, H3T models.

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