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Chevrolet 91177382 Piston Kit,Os:050 (On Esn)

1999-2002 Chevrolet Tracker

Customer Questions & Expert Answers (4)
GM 91177382 Piston Kit,Os:050 (On Esn)
  • Part Description
    PISTON, Engine Piston
  • Manufacturer
    General Motors
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  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine Chevrolet
    Manufacturer Part Number91177382
    Part DescriptionPISTON, Engine Piston
    Item Dimensions3.9 x 3.4 x 3.4 inches
    Item Weight1.20 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Require Quantity4
    ManufacturerGeneral Motors
    SKU91177382
    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
    1999-2002 Chevrolet Tracker4 Cyl 2.0L4 DOOR, CONVERTIBLE
  • Customer Questions & Expert Answers

    Q:
    I am wonder if this is complete and correct part for my vehicle. Posted by GMPartsGiant Specialist
    A:
    You can Select Your Vehicle to check if 91177382 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    How to clean and inspect piston/connecting rod assemblies? Posted by Customer
    A:
    Before going through the inspection process, clean the piston/rod assemblies and remove the original piston rings. When you reassemble the engine, make sure to use new piston rings. Using a piston ring installation tool, gently take off the rings from the pistons trying not to spoil them. Simply scrape away carbon deposits on top of the piston then use a hand-held wire brush or fine emery cloth after most of it is gone. Do not use a wire brush in a drill motor because it can erode the soft material of the piston. Take out all carbon from ring grooves using either a tool for cleaning grooves or broken old rings without removing metal or damaging side faces of grooves. Having removed the deposits, wash off pistons/rods using solvent and dry up with compressed air ensuring clear oil return holes at back sides of ring grooves. In case pistons and cylinder walls are not significantly damaged or worn excessively and if there is no need for reboring an engine block, then new pistons may not be necessary; otherwise when overhauling an engine always replace with new ones. Examine each piston carefully for any signs of cracks around its skirt, pin bosses as well as ring lands. Watch out for scores at scuffing points on skirts thrust faces, pit marks in crown that look like worm holes and burnt edges around upper part pointing to probable overheating or an abnormal combustion problem. Check what causes include intake air leaks, wrong fuel/air mixture ratios, timing differences or EGR system failures (Garrett 460). If you see small pits, corrosion means coolant leakage into combustion chamber or crankcase requiring correction. Measure both piston ring side clearance and bore-to-piston clearance to ensure they are in specifications. Confirmations about piston-to-rod clearance may be obtained from an automotive machine shop if need be. Should one require separating pistons from connecting rods he should consult an automotive machine shop. Inspect rods for cracking and damage, take off rod caps for bearing surface inspection purposes only to replace old bearings when an engine is being rebuilt as a result of connecting rod knock and make sure that new rods are installed where necessary.
    Posted by GMPartsGiant Specialist
    Q:
    What should be done after the piston/connecting rod assembly is installed in the cylinder for the 1991 Chevrolet Tracker? Posted by Customer
    A:
    After the piston/connecting rod assembly is installed in the cylinder, the connecting rod bearing oil clearance should be checked using Plastigage.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Piston
    Q:
    Why is it important to check for ridges in the cylinder before removing the piston/connecting rod assemblies during an engine overhaul for the 1999 Chevrolet Tracker? Posted by Customer
    A:
    It is important to check for ridges in the cylinder because carbon deposits or cylinder wear can produce ridges at the upper limit of ring travel. These ridges must be completely removed before attempting to remove the piston/connecting rod assemblies to avoid piston breakage.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Piston
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

Genuine GM Part 91177382, the Right Choice

To ensure reliability, purchase GM part # 91177382 Piston Kit,Os:050 (On Esn). It is sometimes referred to as Chevrolet Piston. 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 Chevrolet Tracker models.

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