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GMC 12351870 Piston & Pinion(.030" Oversize)(600 Gram)

1985-1989 GMC

Customer Questions & Expert Answers (5)
GM 12351870 Piston & Pinion(.030" Oversize)(600 Gram)
  • Part Description
    PISTON, Engine Piston
  • 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 GMC
    Manufacturer Part Number12351870
    Part DescriptionPISTON, Engine Piston
    Item Dimensions7.0 x 4.5 x 4.5 inches
    Item Weight2.10 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Require Quantity4
    ManufacturerGeneral Motors
    SKU12351870
    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
    1987-1989 GMC S154 Cyl 2.5L2 DOOR, PICKUP
    1985-1989 GMC Safari4 Cyl 2.5LVAN SAFARI
  • 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 12351870 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    What should be done after all assemblies are installed for the 1988 Chevrolet Astro? Posted by Customer
    A:
    Rotate the crankshaft by hand to check for binding and measure the connecting rod end play to ensure it meets specifications, addressing any discrepancies as needed.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Piston
    Q:
    What should be done if the connecting rods and caps are not marked for the 1989 Chevrolet Astro? Posted by Customer
    A:
    If they are not marked, use a small center punch to create indentations for identification.
    Posted by GMPartsGiant Specialist
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    Q:
    What is the recommended method for removing piston rings for the 1990 Oldsmobile Cutlass? Posted by Customer
    A:
    If a piston ring expanding tool is available, use it to remove each of the rings from the piston. Alternatively, expand the ring just enough to clear the lands of the piston body, then place strips of tin (about Three-quarters in. wide) under the ring at equal distances around the piston and use a slight twisting motion to 'walk' the ring up and off the top.
    Posted by GMPartsGiant Specialist
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    Q:
    What should be examined on the piston for the 1991 Oldsmobile Cutlass? Posted by Customer
    A:
    The piston should be examined for cracked ring lands, skirts, or pin bosses, as well as worn or wavy ring lands, scuffed or damaged skirts, and eroded areas at the top. Any damaged pistons or those showing excessive wear must be replaced.
    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 12351870, the Right Choice

To ensure reliability, purchase GM part # 12351870 Piston & Pinion(.030" Oversize)(600 Gram). It is sometimes referred to as GMC 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 GMC S15, Safari models.

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