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GM 12621428 Spring, Valve

2006-2015 GM

Customer Questions & Expert Answers (3)
GM 12621428 Spring, Valve
  • Part Description
    SPRING, Engine Valve
  • Replaces
    12578457
  • Manufacturer
    General Motors
Make sure this part fits
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  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number12621428
    Part DescriptionSPRING, Engine Valve
    Other NamesValve Spring
    Item Dimensions2.9 x 1.9 x 1.4 inches
    Item Weight0.50 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces12578457
    Require Quantity16
    ManufacturerGeneral Motors
    SKU12621428
    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
    2014-2015 Chevrolet Camaro8 Cyl 7.0LSS 2 DOOR COUPE
    2006-2013 Chevrolet Corvette8 Cyl 7.0L2 DOOR SPECIAL, 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 12621428 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    How can broken Rocker Shaft Spring Kit and Valve Stem Oil Seal be replaced without removing the cylinder head on Chevrolet Corvette? Posted by Customer
    A:
    Well-worn valve springs and valve stem seats that do not seat properly can be repaired with the head off and often do not need to be removed, but require two special tools and compressed-air source. Start by pulling out the spark plug and the valve cover, crank the engine in order to align the number one piston on the compression stroke. Then, you have to take out the rocker arms which are used for the number one cylinder and fit an adapter to the spark plug hole and attach a hose to it for an air compressor from a compressed air supply. Use compressed air to close the valves and make them stay in position; use shop rags to block all the spaces of the cylinder head round the valves to ensure that no part and tool fall in the engine. Simply strike lightly on top of the valve spring retainer to remove the check between the valve keeper and the spring retainer, then make use of a valve spring compressor to compress the spring and then remove the keeper using a small needle nose pliers or magnet. Pull out the valve spring and the retainer by pulling carefully to prevent the valve from being struck by the falling spring and bending. Take off the old valve stem seals and notice that the intake is always different from the exhaust, and put a rubber band or a piece of tape around the top of the valve stem so that it does not fall into the combustion chamber when you release the air pressure. Check the condition of the valve stem , it should not stick in the guide. Apply air pressure to keep the valve shut; replace the valve stem seals, the spring and retainer. Slightly compress the valve spring assembly to fit in the keepers and use a tiny amount of grease to fix them if required. Subsequently, if the keepers are comfortably seated, shut off the line of air and take off the adapter from the surface of the spark plug. Perform same procedure on the rest of cylinders with regards to firing order sequence; then install the rocker arm assembly and the valve covers. Last, engage the engine and look for traces of oil or strange sounds and rev the engine for not less than five minutes.
    Posted by GMPartsGiant Specialist
    Q:
    What should be done if air pressure fails to retain the valve in the closed position for the 2015 Chevrolet Camaro? Posted by Customer
    A:
    If air pressure fails, the valve face or seat may be damaged, necessitating cylinder head removal for repair.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Rocker Shaft Spring Kit
    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 12621428, the Right Choice

To ensure reliability, purchase GM part # 12621428 Spring, Valve. It is sometimes referred to as GM Rocker Shaft Spring Kit. 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 Camaro, Corvette models.

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