![High-Strength Head Bolt Kit for 1997-2003 GM LS Engines [6-Point Head]](https://www.jegs.com/images/mini_750/500/555/555-83405.jpg)
JEGSPART NUMBER: 555-83405
High-Strength Head Bolt Kit for 1997-2003 GM LS Engines [6-Point Head]
$18999$208.99You Save$19.00
More than 10 availableGM LS
High-Strength Head Bolt Kit1997-2003 GM LS Engines 6-Point Head Chromoly Black Sold as a kit
JEGS 555-83405 Head Bolt Kit Features:
- Fits 1997-2003 GM LS engines including 4.8L, 5.3L, 6.0L, 6.2L and others based on the popular platform
- Ideal for engine repair when changing the cylinder heads or head gaskets
- Seals cylinder heads properly at a bargain price
- Made with high-quality materials
- These are reusable bolts as these are not torque-to-yield one-time-use fasteners
- These head bolts fit GM LS engines up to December 2003 and are NOT Torque-to-Yield and can be reused.
- This bolt kit is for GM LS engines that have two lengths of 11mm head bolts.
JEGS 555-83405 Head Bolt Kit Includes:
- (4) 11mm-2.0 x 103mm Head Bolts
- (16) 11mm-2.0 x 158mm Head Bolts
- (10) 8mm-1.25 x 48mm Head Bolts
- (30) Head Bolt Washers
FAQ
Can you reuse head bolts on a 5.3L LS engine?
- All GM LS-based engines use torque-to-yield bolts and are for one-time use only.
What size are the head bolts on a GM LS engine?
- The head bolts on GM LS engines vary in size. The JEGS 83405 LS head bolts are specifically designed for LS engines with 11mm head bolts, providing the correct sizing, gen 4 head bolt torque, and length for reliable installation.
How many head bolts does an LS1 engine have?
- An LS1 engine typically has 10 head bolts per cylinder head. Ensure proper installation with the JEGS 83405 LS head bolts, designed for optimal fit, and performance.
Are LS JEGS head bolts reusable?
- No, they are torque to yield and should not be reused.
Part TypeCylinder Head Bolts and Studs
BrandJEGS
Package Height4.5
Package Width8.2
Package Length8.4
Weight5.7 PG
Part CategoryPerformance Parts
Underhead Length6.22 in (158 mm)
QuantitySold as a set
Fastener FinishBlack oxide
Fastener MaterialSteel
Engine Make/SizeGM LS
Undercut StudYes
Washers IncludedYes
Thread Size (In.)M11-2.00
Fastener Yield Strength (Psi)170,000
Fastener StyleBolt
Cut To FitNo
Part FitmentDirect Fit
Head StyleHex
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations




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