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🔧 Upgrade your LS engine with rock-solid reliability and precision fit—don’t settle for less!
This 90-piece Cylinder Gasket Head Stud Bolts Nuts Kit is engineered for 97-03 Chevy LS1, LQ9, LS6, and GM trucks, featuring heat-treated iron studs with 220K psi tensile strength and a corrosion-resistant black oxide finish. Designed for easy installation and maximum engine performance, it includes all necessary studs, washers, and nuts for a direct replacement that enhances durability and reliability.
| ASIN | B0824Q1GM6 |
| Best Sellers Rank | #68,781 in Automotive ( See Top 100 in Automotive ) #7 in Car Engine Head Bolt Sets |
| Brand | PQY |
| Color | Black |
| Colour | Black |
| Compatible Groove Diameter | 11 Millimeters |
| Customer Reviews | 4.2 out of 5 stars 448 Reviews |
| Fastener Type | Stud Bolt (Mechanical Fastener) |
| Fastener type | Stud Bolt (Mechanical Fastener) |
| Finish Types | Black Oxide |
| Grade Rating | Class 8.8 |
| Head style | Cylinder |
| Item Diameter | 8 Millimeters |
| Item Shape | Round |
| Manufacturer | PQY |
| Material | Iron |
| Material Type | Iron |
| Maximum Shear Strength | 132 ksi - 176 ksi (97.9 MPa - 121.5 MPa) |
| Model | emk05 |
| Number Of Items | 1 |
| Number of Pieces | 90 |
| Part Number | emk05 |
| Screw Head Style | Cylinder |
| Size | for 97-03 Chevy |
| Size Name | for 97-03 Chevy |
| Thread Size | M11 |
| UPC | 781829867820 |
| Unit Count | 1 Count |
C**Y
Save $250 over arp
Great stud kit. One nut wasn’t threaded, ordered a replacement set and all was well. Followed arp instructions, used arp lube. Zero issues.
K**T
2001 4.8L
Fit my 2001 gmc sierra 1500 with the 4.8l vortec. Good option for a stock replacement. Does not come with torque gease. I followed arp's torquing instructions
T**.
Holding up. Worked perfectly
Used these on a budget rebuild on my lm7 5.3 With new 862 heads. I torqued them to arp specs last round of torque was 75ft lbs Make sure to lube the washer and nut so it torques correctly. Otherwise the nut and washer will kinda bind up during torque sequence. No issues with this kit at all. They look nice and they gave 1 extra of each length. DO NOT TORQUE TO 100FTLB GO 75FTLB AND YOUR GOOD.
S**N
Very good for the price but...
The torque test channel on YouTube tested these and they scored very high for torque before fatigue especially with cost. I was able to torque my 6.0l aluminum heads HOWEVER, one stud had thread damage from factory and I had to run a die down the threads to cut the threads from factory to be usable. I didn't bother messaging the vendor however but be aware that these are cheaper than ARP by alot and have their own quirks because of that.
D**N
Very strong for the price
These studs work great for way less then the bigger name brand companies, these have held up to 20lbs of boost on my ls truck, good quality and fit great
Trustpilot
1 day ago
1 month ago