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EPChunMi 12-point Cylinder Head Studs Bolts Kit for 2004-2019 LS1 LS3 5.3L 5.7L 6.0L Engines Compatible with Chevy LS1 LS6 4.8L 5.3L 6.0L
- Replace: 234-4317, 2344317, 33449
- Same with OEM standard quality, perfectly matching your original car
A Kit Include:
- 20 x M11 head stud(135mm);
- 10 x M8 studs(64mm);
- 20 x 12-point big Nuts(20mm) with big Washers(18mm);
- 10 x 12-point small Nuts(16mm) with small Washers(16mm);
- Please check all your same length studs before purchase.
Fitment:
- The 12-Point cylinder Gasket head studs kit compatible with Chevy LS1/LS3 2004-Newer 5.3L 5.7L 6.0L engines.
- The Cylinder Head Bolts set compatible with Chevy LS1/LS6 2004-2019 4.8L 5.3L 6.0L Engines.
Professional technique:
- Material: high-quality 35CrMo
- Technique: centerless ground and heat treatment
- Feature: 180000 PSI High Tensile Strength; Black Oxide Finish;
- High temperature Resistance; Wear Resistance and Corrosion Resistance.
Advantage:
- Testing is done on the strength, durability and longevity of each kit before selling.
- You can buy and use without worries.
Why to replace?
- Replacing the Studs for Roller Rocker Arms is simple, but can effectively keep the rocker arm in place to prevent accidental dislodgement.
TheLastAndTheCurious
Reviewed in the United States on February 8, 2025
This is my second set of EPChunMi LS head studs and they are working great so far. Low boost so far, no signs of lifting. I think a lot of failures you'll hear about on these chinese head studs are from people who were both cheap AND not following the right installation procedures (a common correlation). Use the ARP head stud procedures, follow them to the letter and lubricate the correct portions only. In general, another trick you can do is put a 1/4" steel ball bearing down any dry holes (i.e. ones not touching any coolant passages) so that the stud bottoming out is sudden and instant. Without that you risk running into incomplete cut threads that are at the bottom of the hole, which will make the stud want to twist from bottom to top.
Customer
Reviewed in the United States on February 2, 2025
This is a great looking headstand set! It’s all really well packaged and the hardware is all very well finished and oiled. The threads are clean and the kit is complete. Great kit for the price if you’re building a relatively mild LS.
Aliviana York 2.0
Reviewed in the United States on December 9, 2024
Nice bolts.The only problem I had was 3 of the 10 smaller M8 studs had tight fine threads. The nuts couldn't be threaded all the way down by hand which indicates a problem. A quick cleanup with a thread chaser resolved the problem.Other than that one problem it is a good set of studs.This kit is only for 2004 to 2019 engines, you will need a different kit for 1997 to 2003, and beware that 2003/2004 engines could be either because there were carryover engines in 2004.I Hope My Pictures And Review Were Helpful To You !!
Tonya
Reviewed in the United States on December 15, 2024
Great quality hardware replacement for your LS. They threaded in nice and tight, torqued down to OEM spec without breaking, have a nice finish to them, and gave peace of mind knowing that the OEM bolts were not the best and came loose on their own at some point in the engines life of 80,000 miles. After a few weeks of use and heating and cooling cycles, these have not come loose and retain the applied torque specs used at install.
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