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BOLT KIT ONLY for - LS Steam Port / Coolant Cylinder Head Crossover - LS1 LS3 LS2 LSX LQ4

In stock
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Steam Port to Cylinder Head, Bolt Kit

Compatible with all GM LS series engines 1997-2014

  • Package Includes: 4pcs of grade 10.9, M6-25mm

More Information

Bullet Point 1 Heavy duty bolts
Bullet Point 2 High strength, grade 10.9 bolts
Bullet Point 3 Zinc coated for long lasting corrosion protection and prevents threads from seizing
Bullet Point 4 No washers needed with these flange head bolts
Bullet Point 5 JIS spec bolts
Manufacturer Part Number 551437
UPC 656729844373
Weight 0.180000
ICT Manufacturer ICT Billet
United States Unknown or Varies
Length Inches .5
Width Inches 2
Height Inches 3
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WARNING - This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to


ALUMINUM: Most of the aluminum alloys used today contain some level of lead, usually less than .1%. Lead is known to the state of California to cause cancer and reproductive harm. Most aluminum alloys are physiologically inert in their solid form, and the lead is contained within, however user-generated dust and/or fumes may pose a hazard if inhaled or ingested. Heating beyond a certain temperature may also provide avenues for exposure.


STEEL (steel bolts):  Steel is an iron alloy with several metals including Nickel and Chromium. Both Nickel and Chromium are known to the State of California to cause cancer and reproductive harm, respectfully. This warning applies to stainless steels as well.