PQY 12-point cylinder head stud kit box showing complete hardware for quick installation.
PQY M11 head stud close-up for high-torque capability.
PQY M8 head stud close-up highlighting compact studs for smaller joints.
PQY parallel-ground washers close-up demonstrating precision-focused hardware.
PQY 12-point nuts pack emphasizing secure thread engagement.
PQY included hardware contents highlight ready-to-install kit.
PQY 12-point cylinder head stud kit box showing complete hardware for quick installation.
PQY M11 head stud close-up for high-torque capability.
PQY M8 head stud close-up highlighting compact studs for smaller joints.
PQY parallel-ground washers close-up demonstrating precision-focused hardware.
PQY 12-point nuts pack emphasizing secure thread engagement.
PQY included hardware contents highlight ready-to-install kit.

PQY 12-Point Cylinder Head Stud Kit for GM LS Engines | Fits 97-03 Chevy LS1/LQ9/LS6 4.8L-6.0L

PQY 12-Point Cylinder Head Stud Kit for GM LS Engines Designed for the LS family, this head...
Vendor: PQY
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£93.33
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PQY 12-point cylinder head stud kit box showing complete hardware for quick installation.

PQY 12-Point Cylinder Head Stud Kit for GM LS Engines | Fits 97-03 Chevy LS1/LQ9/LS6 4.8L-6.0L

£93.33
PQY 12-point cylinder head stud kit box showing complete hardware for quick installation.
PQY M11 head stud close-up for high-torque capability.
PQY M8 head stud close-up highlighting compact studs for smaller joints.
PQY parallel-ground washers close-up demonstrating precision-focused hardware.
PQY 12-point nuts pack emphasizing secure thread engagement.
PQY included hardware contents highlight ready-to-install kit.

PQY 12-Point Cylinder Head Stud Kit for GM LS Engines | Fits 97-03 Chevy LS1/LQ9/LS6 4.8L-6.0L

£93.33
Description
Description
x

PQY 12-Point Cylinder Head Stud Kit for GM LS Engines

Designed for the LS family, this head stud kit provides a practical upgrade path for popular GM configurations. It supports 4.8L, 5.3L, 5.7L, and 6.0L engines and is compatible with 97-03 Chevy LS1/LS6 variants, as well as 98-02 Camaro/Firebird F-Body and 99-03 Silverado/Sierra GM trucks. Whether you are rebuilding, upgrading, or performing routine maintenance, this kit offers a cohesive hardware set built to complement your engine work.

Why this kit stands out

Durability and reliable clamping are built into the design. The 12-point head studs are centerless ground and heat treated before thread rolling, delivering a solid, uniform clamp across the cylinder head. The specification notes a nominal tensile strength in the vicinity of 220K psi, and practical torque references help guide proper installation for M11 and M8 studs (approximately 80 ft-lbs for M11 and 28 ft-lbs for M8).

  • Material and finish: Iron-based studs with good ductility and a black oxide finish for high-temperature resilience.
  • Strength and reliability: Careful processing aims to resist typical engine stresses and maintain a consistent clamping force.
  • Installation: Designed as a direct replacement for aging or rusted bolts, offering a clean upgrade path.

What’s included

The kit comes ready to install with a balanced assortment of fasteners and hardware:

  • 20 × M11 head studs
  • 10 × M8 head studs
  • 30 × parallel-ground washers
  • 30 × 12-point nuts

Real-world use and considerations

With a straightforward installation, this kit is well suited for LS builds, head gasket service, or engine maintenance where new studs can help ensure a solid seal. While benefits can vary by application, the combination of centerless grinding, heat treatment, and a robust finish contributes to a dependable hardware set for many LS-based installations.

Note: If any item is missing, PQY offers support to help complete your order and ensure you have what you need to finish the job.

FAQ

Q: What vehicles is this PQY head stud kit compatible with?

A: Fits 97-03 Chevy LS1/LS6 engines and 98-02 Camaro/Firebird F-Body, 99-03 Silverado/Sierra GM trucks.

Q: What are the main benefits of this kit?

A: Centerless ground, heat-treated studs for enhanced strength; complete kit with washers and nuts; easy direct replacement of rusted bolts for better reliability.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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