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Cadillac 12616971 Piston,(W/Pinion)

2008-2011 Cadillac

Customer Questions & Expert Answers (4)
GM 12616971 Piston,(W/Pinion)
  • Part Description
    PISTON, Engine Piston
  • Manufacturer
    General Motors
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  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine Cadillac
    Manufacturer Part Number12616971
    Part DescriptionPISTON, Engine Piston
    Other NamesPiston
    Item Dimensions5.0 x 4.3 x 4.3 inches
    Item Weight1.60 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU12616971
    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
    2008-2011 Cadillac CTS6 Cyl 3.6L2 DOOR COUPE, 4 DOOR, 4 DOOR (RHD), 4 DOOR RHD, 4 DOOR SEDAN, 4 DOOR SEDAN(RHD), 4 DOOR STATION WAGON, 4 DOOR STATION WAGON(RHD), 4 DOOR WAGON, 4 DOOR WAGON(RHD)
    2008-2011 Cadillac STS6 Cyl 3.6L4 DOOR, 4 DOOR(RHD)
  • 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 12616971 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    How to remove the piston/connecting rod assemblies? Posted by Customer
    A:
    A special tool is used to eliminate ridges at the upper limit of ring travel in each cylinder. This will help prevent piston breakage when removing piston/connecting rod assemblies. Then, with the engine in a position such that the crankshaft faces up, check connecting rod end play using feeler gauges and change connecting rods if necessary. Mark the connecting rods and caps for identification, before removing the cap bolts. Use new bolts for reassembly but keep the old ones for an oil clearance check. The number one connecting rod cap with bearing insert should be carefully removed making sure that the ridge was completely removed. Repeat this process for all cylinders, and reassemble the connecting rod caps and bearing inserts loosely to protect the bearing surfaces during further inspection and overhaul at an automotive machine shop. Before you can install new piston rings, it is necessary to check their ring end gaps and ensure proper side clearance. Take the top ring and put it into first cylinder, measure end gap with feeler gauges and see if it falls within specified range. Adjust gap if necessary by either filing ends to increase or simply verifying you have correct rings. Install oil control ring components followed by number two and one rings while being careful about their orientation. Piston ring installation tool should be employed on top as well as middle rings with respect to number two and one rings respectively, keeping their orientations right. Afterward, check and adjust the ring end gaps for all rings in each cylinder, keeping components matched. Ensure that walls of cylinders are clean before installing piston/connecting rod assemblies; bore top edges should be chamfered while crankshaft should be in place too Remove the cap from number one connecting rod after thoroughly cleaning bearing surfaces then lay in new upper bearing insert Insert lower bearing insert into cap (making sure tab fits into recess) while keeping both mating surfaces clean & free of oil Placement of the piston ring gaps correctly on lubricated pistons ensures their compression in a piston ring compressor. A piston and rings are then lubricated with engine oil as their compressor gets used. Insert the piston/connecting rod assembly into the cylinder bore, guiding the connecting rod onto the crankshaft journal with a gentle tap while being cautious not to force it. Check for any resistance and resolve issues before proceeding. Once installed, use Plastigage to check connecting rod bearing oil clearance before permanently attaching the rod cap using new bolts. Apply molybase grease or engine assembly lube on both bearing faces ensuring a clean surface. Repeat this process for all pistons/connecting rods, confirming cleanliness, proper orientation, and lubrication. Rotate the crankshaft by hand to check for binding, and verify the connecting rod endplay, resizing them if necessary at an automotive machine shop.
    Posted by GMPartsGiant Specialist
    Q:
    What should be done with the connecting rod caps before removing them for the 2014 Buick Enclave? Posted by Customer
    A:
    Before removing the connecting rod caps, you should mark them for identification.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Piston
    Q:
    What should be done with the connecting rod caps before removing them for the 2017 GMC Acadia? Posted by Customer
    A:
    Before removing the connecting rod caps, you should mark them for identification.
    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 12616971, the Right Choice

To ensure reliability, purchase GM part # 12616971 Piston,(W/Pinion). It is sometimes referred to as Cadillac 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 Cadillac CTS, STS models.

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