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๐ง Lock in power and reliability with every bolt โ donโt let your build settle for less!
The PQY Cylinder LS Head Studs Bolts Kit is a high-performance, direct-fit upgrade designed for Chevy 97-03 5.3L and 6.0L engines. Featuring centerless ground, heat-treated iron studs with a durable black oxide finish, this 12-point head stud kit offers 220K PSI tensile strength and superior heat resistance. The comprehensive kit includes all necessary studs, nuts, and washers for easy installation, delivering professional-grade reliability and enhanced engine performance.







| ASIN | B0824Q1GM6 |
| Best Sellers Rank | #36,447 in Automotive ( See Top 100 in Automotive ) #6 in Automotive Replacement Engine Head Bolt Sets |
| Brand | PQY |
| Color | black |
| Customer Reviews | 4.1 out of 5 stars 391 Reviews |
| Fastener Type | Stud Bolt |
| Finish Types | Black Oxide |
| Head Style | 12-Point |
| Item Diameter | 8 millimeters |
| Item Highlight | 12-Point Cylinder Gasket Head Stud Bolts Nuts Kit for LS1 LQ9 LS6 4.8L 5.3L 5.7L 6.0L Engines |
| 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 |
| Outside Diameter | 8 millimeters |
| Part Number | emk05 |
| Screw Head Style | 12-Point |
| Set Name | PQY 12-Point Cylinder Gasket Head Stud Bolts Nuts Kit |
| Size | for 97-03 Chevy |
| Size Name | for 97-03 Chevy |
| Thread Size | M8 |
| UPC | 781829867820 |
| Unit Count | 1 Count |
A**W
2 years, multiple reuses, boosted 408 with no issue
Bought these for my 408 stroker build because i needed head studs by the next day and nobody had them locally. I was and still am a bit skeptical but they have been holding up fine to 15 PSI of boost with 9.5-1 CR. I will most likely order a set of Xotic or ARP to have on hand when these go bad but they seem to just fine. Update: it has been about a year and half running these studs, had the motor apart a few times and reused them each time. They're holding up really well. I've ran 18psi of boost on my 408 LS with 9.8-1 compression.... no issues whatsoever. Highly recommend these if you need a inexpensive option delivered fast
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.
L**M
Junk
Do not fit way to long and was shorted bolts on the 2 sets i bought
L**M
So far they have been holding strong!
Its been holding up great so far. hit 20lbs of boost (not intended, wastegate got stuck.) point is they held up. I seen that people followed ARP's installation process, I followed the instructions given in the order. so far they hold up! best bang for buck, I recommend these over the OEM bolts any day!
C**S
Solid for a budget build
I would not say ARP equivalent by any means but for a budget build send em. Followed ARPS torque specs 25, 50 than 85 for mains and 28 for the smalls nothing broke went smooth. Came with 1 extra long and 1 extra medium. No extra nuts though. 1 nut was flawed a crack was very visible from the bottom 2 Threads down all the way through. Luckily I had an extra from a previous set. All else though theyโre solid for the money but like others have said I wouldnโt trust em with much more than 85lbs. Great for built N/A LS. Idk about boost with these just cause the price. Thatโs your risk though ๐คทโโ๏ธ
M**R
Got to lube it first
Got to use arp lube . If you do like you should these work great. I've used them on 7 or 8 engines now . If you try to just oil or nothing you will break them just like any stud .
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
C**E
best bang for your buck
i bought these knowing they're cheap. wasn't expecting much though i wanted studs instead of bolts. this was a cheap alternative to ARP. i have these on an LS1 turbo build running 16LBS of boost and holding up just fine. used the ARP torque chart. they worked well enough i bought a couple more sets and used on some high compression builds (11:1) and they're running fine . i'll buy more soon. this set is the older style up to 03 year model.
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
C**Y
Not as advertised
Didnโt fit my LS gen 3 5.3l as it said it should I had to use old ones
D**N
Washers didn't fit the bolts
Studs installed good, but washers were to small for the larger bolts. Now I have a ton of drilling to do to finish this job. Other than that they seem to be exactly as I'd expected. Quality seems good so far other than the washer issue.
D**T
They fit
They seem to be as good as arp head studs fraction of the price
N**A
Seem to work
They are ok. Seem to do the trick. You can yell they are not high quality. I used arp spec for torque time will tell. Ideally they will be reusable multiple times. Time will tell.
Trustpilot
4 days ago
3 weeks ago