How to disassemble cylinder heads and valves on Chevrolet Astro?

New or remanufactured cylinder heads can be easily bought from dealers or auto parts stores and it makes much more sense for do it yourself mechanics to just buy a new one to replace the originals rather than spending time and money to dismantle, inspect, and refurbish the heads. In disassembly, the intake and exhaust valves are removed together with other components. First, remove the nuts of the rocker arms, the pivot balls, and the rocker arms from the cylinder head studs making sure that the set parts are labeled in order to fit them again. If it is necessary to remove the valves, it will be useful to mark them and put them along with the parts in sets, so that it will be easy to return them to their places in the valve guides. Oversight the compressor on the first valve in order that one is capable of compressing it, afterwards, pull off the keepers, the retainer, the shield, springs and the spring seat. Take the O-ring seal off the valve stem and the umbrella type seal from the guide after which the valve is to be pulled out of the head. In case the valve binds apply force to the opposite direction and remove burr on the keeper groove area. Do the same to the other valves; assemble all parts needed for reinstallation in separate compartments. When valves and other components were removed and stored, the head should be washed, and other disassembly processes are to be done in case of a full engine rebuild before washing and physical assessment begins.

Genuine Chevrolet Astro Cylinder Head

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9 Cylinder Heads found

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Chevrolet Astro Cylinder Head Assembly (W/Studs)
Part Number: 12533558
$310.73 MSRP: $491.12
You Save: $180.39 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Head Asm,Cyl (W/Studs)
- Replaces: 12533134
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1999 Chevrolet Astro | VAN ASTRO | 6 Cyl 4.3L
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Chevrolet Astro Cylinder Head & Stud Kit, 4.3Z
Part Number: 12520274
$685.46 MSRP: $934.39
You Save: $248.93 (27%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Cylinder Head
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1990-1992 Chevrolet Astro | VAN ASTRO | 6 Cyl 4.3L
- 1986 Chevrolet Astro | VAN ASTRO | 6 Cyl 4.3L
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Chevrolet Astro Engine Cylinder Head
Part Number: 12555630
$449.11 MSRP: $713.03
You Save: $263.92 (38%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Head,Cyl; Cylinder Head
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1999-2005 Chevrolet Astro | VAN ASTRO | 6 Cyl 4.3L
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Chevrolet Astro Cylinder Head Assembly
Part Number: 12558112
$621.53 MSRP: $803.53
You Save: $182.00 (23%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Head Assembly, Cyl ; Head, Engine Cylinder; Cylinder Head
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1999 Chevrolet Astro | VAN ASTRO | 6 Cyl 4.3L
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Chevrolet Astro Cylinder Head & Stud Kit, 4.3W
Part Number: 12518291
Product Specifications
- Other Name: Cylinder Head
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1993 Chevrolet Astro | VAN ASTRO | 6 Cyl 4.3L
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Chevrolet Astro Cylinder Head Kit
Part Number: 12360335
Product Specifications
- Other Name: Head Kit,Cyl; Cylinder Head
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1986 Chevrolet Astro | VAN ASTRO | 4 Cyl 2.5L
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Chevrolet Astro CYLINDER HEAD KIT COMPLETE (W/BALL & NUT) (REMANUFACTURE)
Part Number: 12498297
Product Specifications
- Other Name: Head Kit,Cyl(Complete) W/Ball & Nut (Remanufacture) ; Head, Engine Cylinder; Cylinder Head
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994-1995 Chevrolet Astro | VAN ASTRO | 6 Cyl 4.3L
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Chevrolet Astro Cylinder Head Kit
Part Number: 12360340
Product Specifications
- Other Name: Head Kit,Cyl; Cylinder Head
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1987-1989 Chevrolet Astro | VAN ASTRO | 4 Cyl 2.5L
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Chevrolet Astro Cylinder Head Kit
Part Number: 12360338
Product Specifications
- Other Name: Head Kit,Cyl; Cylinder Head
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1987-1990 Chevrolet Astro | VAN ASTRO | 4 Cyl 2.5L

Chevrolet Astro Cylinder Head

Each OEM Chevrolet Astro Cylinder Head we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

Chevrolet Astro Cylinder Head Parts Questions & Experts Answers

Cylinder Head Assembly (W/Studs)
12533558
Q: How to disassemble cylinder heads and valves on Chevrolet Astro?
A: New or remanufactured cylinder heads can be easily bought from dealers or auto parts stores and it makes much more sense for do it yourself mechanics to just buy a new one to replace the originals rather than spending time and money to dismantle, inspect, and refurbish the heads. In disassembly, the intake and Exhaust Valves are removed together with other components. First, remove the nuts of the rocker arms, the pivot balls, and the rocker arms from the cylinder head studs making sure that the set parts are labeled in order to fit them again. If it is necessary to remove the valves, it will be useful to mark them and put them along with the parts in sets, so that it will be easy to return them to their places in the valve guides. Oversight the compressor on the first valve in order that one is capable of compressing it, afterwards, pull off the keepers, the retainer, the shield, springs and the spring seat. Take the O-ring seal off the valve stem and the umbrella type seal from the guide after which the valve is to be pulled out of the head. In case the valve binds apply force to the opposite direction and remove burr on the keeper groove area. Do the same to the other valves; assemble all parts needed for reinstallation in separate compartments. When valves and other components were removed and stored, the head should be washed, and other disassembly processes are to be done in case of a full engine rebuild before washing and physical assessment begins.