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Chevrolet 12555630 Engine Cylinder Head

1996-2014 Chevrolet

Customer Questions & Expert Answers (35)
GM 12555630 Engine Cylinder Head
GM 12555630 Engine Cylinder Head
  • Part Description
    Head,Cyl
  • Manufacturer
    General Motors
Make sure this part fits
$449.11 MSRP: $713.03
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  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers

  • Related Parts

    Shop for related parts for your vehicle

  • Product Specifications

    BrandGenuine Chevrolet
    Manufacturer Part Number12555630
    Part DescriptionHead,Cyl
    Other NamesCylinder Head
    Item Dimensions23.5 x 9.9 x 8.9 inches
    Item Weight34.60 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU12555630
    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
    1999-2005 Chevrolet Astro6 Cyl 4.3LVAN ASTRO
    1996-2005 Chevrolet Blazer6 Cyl 4.3L2 DOOR, 4 DOOR
    1997-2014 Chevrolet Express6 Cyl 4.3L1 TON CARGO EXPRESS, 1 TON COMMERCIAL/RECREATIONAL VEHICLE EXPRESS, 1 TON PASSENGER, 1/2 TON CARGO EXPRESS, 1/2 TON CARGO SAVANA, 1/2 TON PASSENGER EXPRESS, 1/2 TON PASSENGER SAVANA, 3/4 TON CARGO EXPRESS, 3/4 TON PASSENGER EXPRESS
    1996-2004 Chevrolet S106 Cyl 4.3LCREW CAB, PICKUP, PICKUP EXTENDED CAB
    1999-2013 Chevrolet Silverado6 Cyl 4.3L1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB SHORT BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB SHORT BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX, EXTENDED CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 8' BOX 1/2 TON, REGULAR CAB 6'6" BOX 1/2 TON, REGULAR CAB 8' BOX 1/2 TON
    2001-2004 Chevrolet Suburban1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX

  • 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 12555630 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    What should be done before removing the valves for the 1996 Chevrolet Blazer? Posted by Customer
    A:
    Before removing the valves, they should be labeled and stored to ensure they can be reinstalled in the same valve guides.
    Posted by GMPartsGiant Specialist
    Q:
    What should be inspected on the spring retainers and keepers for the 1986 Chevrolet Astro? Posted by Customer
    A:
    Inspect the spring retainers and keepers for wear and cracks, replacing questionable parts to prevent failure during operation.
    Posted by GMPartsGiant Specialist
    Q:
    What is the first step in the process of removing the engine heads for the 1996 Chevrolet Astro? Posted by Customer
    A:
    Begin by disconnecting the negative battery cable and removing the accessory drive belts.
    Posted by GMPartsGiant Specialist
    Q:
    What is the process for compressing the valve spring for the 1990 Chevrolet Astro? Posted by Customer
    A:
    Compress the valve spring(s) with a suitable compressor, lubricate the flat O-ring if used, and carefully install it in the lower groove on the valve stem, ensuring it lies flat.
    Posted by GMPartsGiant Specialist
    Q:
    What should be done after tightening the cylinder head bolts for the 2005 Chevrolet Astro? Posted by Customer
    A:
    Finally, complete the remaining installation steps in reverse order, change the oil and filter, run the engine, and check for leaks.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Cylinder Head
    Q:
    What is the advantage of purchasing new or rebuilt cylinder heads for home mechanics for the 1993 Chevrolet Astro? Posted by Customer
    A:
    New and rebuilt cylinder heads are commonly available for most engines at dealerships and auto parts stores, making it more practical and economical for home mechanics to purchase replacements instead of disassembling, inspecting, and reconditioning the originals.
    Posted by GMPartsGiant Specialist
    Q:
    What components need to be removed before taking off the cylinder head for the 2001 Chevrolet Blazer? Posted by Customer
    A:
    Before taking off the cylinder head, you need to remove the drive belt, upper fan shroud, fan/clutch assembly, water pump pulley, upper radiator hose, heater hose, coolant temperature sensor's electrical connector, thermostat housing, air cleaner assembly, intake manifold (depending on the model year), dipstick tube, alternator, bracket, air conditioning compressor, power steering pump, and their shared bracket.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Cylinder Head
    Q:
    What should be done if the valve spring height exceeds specifications for the 1999 Chevrolet Blazer? Posted by Customer
    A:
    If the height exceeds specifications, shims can be added under the springs to correct it.
    Posted by GMPartsGiant Specialist
    Q:
    What should be checked on the rocker arms and pushrods for the 2002 Chevrolet Blazer? Posted by Customer
    A:
    Check the rocker arm faces for wear, inspect pushrod ends for scuffing, and roll them on a flat surface to check for bending.
    Posted by GMPartsGiant Specialist
    Q:
    What steps should be completed after installing the cylinder heads for the 2004 Chevrolet Blazer? Posted by Customer
    A:
    Complete the remaining installation steps in reverse, change the engine oil and filter, and check for leaks when starting the engine.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Cylinder Head
    Q:
    How should the cylinder heads be stored after removal for the 2019 Chevrolet Express? Posted by Customer
    A:
    Store them on wood blocks to prevent damage.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Cylinder Head
    Q:
    How should the rocker arms and pushrods be handled for the 2016 Chevrolet Express? Posted by Customer
    A:
    Remove the rocker arms and pushrods, ensuring all parts are kept in order for reinstallation.
    Posted by GMPartsGiant Specialist
    Q:
    How is a valve spring compressor used in the disassembly process for the 1999 Chevrolet S10? Posted by Customer
    A:
    A valve spring compressor is used to compress the spring on the first valve, allowing for the removal of the keepers, retainer, shield, springs, valve guide seal, spring seat, and the valve itself.
    Posted by GMPartsGiant Specialist
    Q:
    How should old gasket material and sealing compound be removed from the cylinder head for the 2000 Chevrolet S10? Posted by Customer
    A:
    Old gasket material and sealing compound should be scraped away using a dull gasket scraper and gasket-removal solvent, avoiding power tools or abrasive pads to protect the machined surfaces.
    Posted by GMPartsGiant Specialist
    Q:
    How should the new cylinder head gaskets be positioned for the 1994 Chevrolet S10? Posted by Customer
    A:
    Position new gaskets over dowel pins.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Cylinder Head
    Q:
    How should the new cylinder head be installed for the 1995 Chevrolet S10? Posted by Customer
    A:
    To install the new cylinder head, you should position the new gasket over the dowel pins in the block, then place the head on the block without disturbing the gasket. Tighten the bolts, and complete the remaining installation steps in reverse order.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Cylinder Head
    Q:
    What components need to be set in place after installing the seals for the 1999 Chevrolet S10? Posted by Customer
    A:
    Set the valve springs, oil shield for the V6 engine intake valve only, and retainer or rotator for the V6 engine exhaust valve in place.
    Posted by GMPartsGiant Specialist
    Q:
    What should be done if the valve springs show signs of wear for the 2000 GMC Sonoma? Posted by Customer
    A:
    Check the ends of each valve spring for wear and pitting, measure the free length, and ensure they are square. Inspect spring retainers and keepers for wear and cracks, replacing any questionable parts.
    Posted by GMPartsGiant Specialist
    Q:
    What actions should be taken if excessive wear is found during inspection for the 1997 GMC Jimmy? Posted by Customer
    A:
    If the inspection indicates poor condition and excessive wear, reassemble the valves in the cylinder head and follow valve servicing recommendations.
    Posted by GMPartsGiant Specialist
    Q:
    How can the cylinder head be safely lifted off the engine for the 2000 GMC Sonoma? Posted by Customer
    A:
    To safely lift the cylinder head off the engine, you should outline the cylinders and bolt pattern on cardboard and mark the front of the engine. Then, loosen the head mounting bolts in 1/4-turn increments and store them in the cardboard holder. Carefully lift the head off the engine, and if it is stuck, only pry it at the overhang on the thermostat end. Place the head on a block of wood.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Cylinder Head
    Q:
    How should the head bolts be tightened during installation for the 2013 GMC Sierra? Posted by Customer
    A:
    Tighten the head bolts to specified torque in the recommended sequence.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Cylinder Head
    Q:
    How should the cylinder heads be installed for the 2003 GMC Sonoma? Posted by Customer
    A:
    Place the cylinder heads and install bolts in their original locations, tightening in several steps.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Cylinder Head
    Q:
    How should the valve springs be compressed and the O-ring oil seal installed for the 2004 GMC Sonoma? Posted by Customer
    A:
    Compress the springs with a valve spring compressor and carefully install the O-ring oil seal in the lower groove of the valve stem for the V6 engine, ensuring it lies flat and is not twisted.
    Posted by GMPartsGiant Specialist
    Q:
    What is the availability of new and rebuilt cylinder heads for engines for the 1999 GMC Sonoma? Posted by Customer
    A:
    New and rebuilt cylinder heads are commonly available for most engines at dealerships and auto parts stores, making it more practical and economical for home mechanics to purchase a replacement head rather than disassembling, inspecting, and reconditioning the original.
    Posted by GMPartsGiant Specialist
    Q:
    How should the new gaskets be positioned during installation for the 2010 Chevrolet Silverado? Posted by Customer
    A:
    The new gaskets should be positioned over the dowel pins during installation.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Cylinder Head
    Q:
    What precautions should be taken when lifting the cylinder heads from the engine for the 2012 Chevrolet Silverado? Posted by Customer
    A:
    Lift the head(s) from the engine carefully to prevent damage to mating surfaces. Store the heads on blocks of wood.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Cylinder Head
    Q:
    What should be done to the new cylinder head bolts before tightening them for the 2010 GMC Sierra? Posted by Customer
    A:
    The threads of the new cylinder head bolts should be coated with a non-hardening sealant before tightening them.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Cylinder Head
    Q:
    How can the cylinder head be safely lifted off the engine for the 2001 GMC Jimmy? Posted by Customer
    A:
    To safely lift the cylinder head off the engine, you should outline the cylinders and bolt pattern on cardboard and mark the front of the engine. Then, loosen the head mounting bolts in 1/4-turn increments and store them in the cardboard holder. Carefully lift the head off the engine, and if it is stuck, only pry it at the overhang on the thermostat end. Place the head on a block of wood.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Cylinder Head
    Q:
    What should be done if the valve spring height exceeds specifications for the 2001 GMC Jimmy? Posted by Customer
    A:
    If the height exceeds specifications, shims can be added under the springs to correct it.
    Posted by GMPartsGiant Specialist
    Q:
    How is a valve spring compressor used in the disassembly process for the 1997 GMC Jimmy? Posted by Customer
    A:
    A valve spring compressor is used to compress the spring on the first valve, allowing for the removal of the keepers, retainer, shield, springs, valve guide seal, spring seat, and the valve itself.
    Posted by GMPartsGiant Specialist
    Q:
    What components need to be removed before taking out the cylinder heads for the 2001 GMC Jimmy? Posted by Customer
    A:
    The intake manifold, exhaust manifolds, valve covers, and pushrods.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Cylinder Head
    Q:
    Is this a bare head with or with out valves Posted by Customer: 2004 Light Truck Blazer / Jimmy (4WD)
    A:
    PART NUMBER. 12555630. CYLINDER HEAD. THIS IS A BARE HEAD. FOR 1996-1999. YOU WILL REQUIRE THE FOLLOWING PART NUMBERS. ROCKER ARM WITH STUD. PART NUMBER 12599650. QUANTITY 6. TOGETHER WITH. SUPPORT ROCKER ARM PIVOT. PART NUMBER 12555582. QUANTITY1. PER GM...
    Posted by GMPartsGiant Specialist 29/7/2022
    Q:
    Is the cylinder head complete ready to install on my blazer ?? Posted by Customer: 2004 Light Truck Blazer / Jimmy (4WD)
    A:
    12555630 IS A BARE HEAD
    Posted by GMPartsGiant Specialist 8/11/2021
    Q:
    Is this a complete cylinder head or just the bare casting? Part Number: 12555630 Posted by Customer: 2003 Light Truck Astro / Safari (AWD)
    A:
    PART NUMBER. 12555630. CYLINDER HEAD. THIS IS A BARE HEAD. FOR 1996-1999. YOU WILL REQUIRE THE FOLLOWING PART NUMBERS. ROCKER ARM WITH STUD. PART NUMBER 12599650. QUANTITY 6. TOGETHER WITH. SUPPORT ROCKER ARM PIVOT. PART NUMBER 12555582. QUANTITY1.
    Posted by GMPartsGiant Specialist 13/9/2021
    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 12555630, the Right Choice

To ensure reliability, purchase GM part # 12555630 Engine Cylinder Head. It is sometimes referred to as Chevrolet 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 Chevrolet Blazer, S10, Silverado models.

GMPartsGiant.com is a leading supplier of genuine GM parts and accessories such as GM 12555630 Engine Cylinder Head. You're certainly in the right place if you're searching for the great cost-effective OEM GM parts. Look no further than our vast inventory of genuine GM parts offered at unbeatable online prices, all of which are backed by the manufacturer's warranty. Not to forget, our hassle-free return policy and quick delivery service ensure a smooth shopping experience for you. For detailed Chevrolet parts information, click here.

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