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Pontiac 10159552 Cylinder Head & Stud ASSEMBLY

1987-1992 Pontiac Firebird

Customer Questions & Expert Answers (2)
10159552 GM Cylinder Head & Stud ASSEMBLY Illustration 1 of 1
  • Part Description
    Cylinder Head & Stud Asm
  • Replaces
    12356026
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine Pontiac
    Manufacturer Part Number10159552
    Part DescriptionCylinder Head & Stud Asm
    Other NamesCylinder Head
    Item Dimensions21.9 x 9.0 x 6.3 inches
    Item Weight48.30 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces12356026
    Require Quantity2
    ManufacturerGeneral Motors
    SKU10159552
    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
    1987-1992 Pontiac Firebird8 Cyl 5.7L2 DOOR, CONVERTIBLE
  • 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 10159552 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    How to remove and reinstall the Cylinder Head in four cylinder engine on Pontiac Firebird? Posted by Hyt H.
    A:
    Remove the intake manifold and the exhaust manifold. Remove the bolts securing the alternator bracket to the cylinder head. If equipped, unbolt the air conditioner compressor and swing it out of the way for clearance. Disconnect all electrical and vacuum lines from the cylinder head, labeling them for easier reinstallation. Remove the upper radiator hose, disconnect the spark plug wires, and remove the spark plugs, ensuring to label the wires. Remove the rocker arm cover, breaking the gasket seal if necessary by striking the cover with your hand or a rubber hammer without prying between sealing surfaces. When disassembling the valve mechanisms, keep all components separate for reinstallation, using a numbered cardboard box or rack corresponding to the engine cylinders. Remove each rocker arm nut and separate the rocker arms and pivots from the cylinder head. Remove the pushrods, organizing them for reinstallation in their original locations. If the ignition coil is mounted separately from the distributor, disconnect the wires and remove the coil. Loosen each cylinder head mounting bolt one turn at a time in reverse of the tightening sequence until they can be removed, noting the length and position of each bolt for correct reinstallation. Lift the head off the engine, using a hammer and block of wood to tap the head if it is stuck, and place it on a block of wood to prevent damage to the gasket surface. Remove the cylinder head gasket. If a new cylinder head is being installed, transfer all external parts from the old head to the new one. Clean the gasket surfaces on the cylinder head and engine block thoroughly, avoiding damage. Ensure the threads of the head bolts and the threaded holes in the engine block are clean by running a tap through the holes. Place the gasket in position over the engine block dowel pins and carefully lower the cylinder head onto the engine, over the dowel pins and the gasket. Coat the threads of the Number 9 and 10 cylinder head bolts and the point where the head and bolt meet with a sealing compound, then install the bolts finger tight. Tighten each bolt a little at a time in the specified sequence until the proper torque reading is obtained, checking in a front-to-rear sequence to ensure none of the bolts have been overlooked. The remaining installation steps follow the reverse order of removal.
    You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Jeremy / Apr 06, 2026

Genuine GM Part 10159552, the Right Choice

To ensure reliability, purchase GM part # 10159552 Cylinder Head & Stud ASSEMBLY. It is sometimes referred to as Pontiac Cylinder Head. 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 Pontiac Firebird models.

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