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EPChunMi 12-point Cylinder Head Studs Bolts Kit for Chevy LQ9 LS1 LS6 1997-2003 4.8L 5.3L 5.7L 6.0L Engines replaces 279.1023 33380 emk05
- Replace: 279.1023, 33380, emk05
- Same with OEM standard quality, perfectly matching your original car
A Kit Include:
- 16* long M11 head stud(187mm);
- 4* short M11 head stud(135mm);
- 10* M8 studs(64mm);
- 20* 12-point big Nuts(20mm) with big Washers(18mm);
- 10* 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 LQ9/LS1/LS6 1997-2003 4.8L 5.3L 5.7L 6.0L Engines.
- The Cylinder Head Bolts set compatible with Chevy Camaro/Firebird F-Body 1998-2002 3.8L, 5.3L, 6.0L engines.
- The Cylinder Head nuts Kit compatible with Chevy C5 Corvette 1997-2003 3.8L, 5.3L, 6.0L engines.
- The 12-Point cylinder Gasket head screws kit Chevy Silverado/Sierra GM Trucks 1999-2003 3.8L, 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.
Andrew
Reviewed in the United States on March 11, 2025
Similar to a more expensive, well-known brand in terms of appearance but fastener companies have to prove themselves and their products based on time on the market and user reports over time. (What they look like doesn't accurately tell the story.) They are dimensionally correct and complete. Given the price, I would say worth it to try on a budget build but anything beyond that and I would need to see verifiable positive reports from long term users.
Olivia Becker
Reviewed in the United States on February 1, 2025
Perfect fit on my LS1. Great holding strength on boosted applications
Levan
Reviewed in the United States on January 26, 2025
Heard good things about these and will be following arp torque specs and sequence for install. Was a little skeptical at first but they should work fine. Will update once installed
ERC
Reviewed in the United States on December 12, 2024
I have not had any real drive time after installing this head stud bolt kit so I am not sure of the durability. I can say that it installed well. The bolts appeared to be made out of quality material. I didn’t face any issues during install. So far this has been a good kit.
TheLastAndTheCurious
Reviewed in the United States on December 11, 2024
Note that 99 to 03 gen 3 LS engines have six longer bolts in the center, compared to the 2004+ and gen 4.Since I have an 01 LQ4 these are the right ones. The main issue I see with no-name brand head studs and bolts is that sometimes they snap right off the bat during installation. While this could be due to poor QC in metalurgy, it can also be because of improper installation by very budget-minded people. So far I looked them over and the design and build quality looks ok. Nothing like a fancy ARP set, but costs a whole LS engine less than those ($50 vs $300)I haven't installed these yet, but I will update with results when I get to putting the new heads on, and again once the engine is running. For this budget of a price, you might give them a shot.
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