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BOLT KIT ONLY LS LT Exhaust Manifold / Header Flange Bolts LS1 LT1 LS3 LQ4

In stock
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Header / Exhaust Manifold to Engine Bolt Kit

Compatible with all GM LS & LT (Gen III, IV, & V) series engines 1997 and newer

  • Grade 10.9, JIS head
  • Bolts are clear zinc coated steel, Grade 10.9, JIS head
  • Package Includes: 12pcs - M8-25mm length (enough bolts to install passenger and driver side headers on one vehicle)
  • Torque Spec for M8 exhaust bolts is 18 ft-lb

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 551696
UPC 656729842515
Weight 0.620000
ICT Manufacturer ICT Billet
United States Unknown or Varies
Length Inches 3
Width Inches 3
Height Inches 1
Download .PDF for Vehicle No

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.