ICT Billet LS External Bolt Kit

The ICT Billet LS External Bolt Kit provides a comprehensive collection of external fasteners for LS Gen III and Gen IV engines. Featuring ICT-brand hardware manufactured to match factory wrench sizes, this kit simplifies engine assembly by supplying high-quality replacement bolts for many of the engine's most commonly serviced external components.

Key Features

Comprehensive external bolt kit for LS Gen III and Gen IV engines
Grade 10.9 fasteners with JIS heads matching factory wrench sizes
Flexplate bolts are Grade 12.9
Made in the USA hardware, except sensor bolts (551430)
Ideal for engine rebuilds, restorations, and new engine assemblies

Kit Includes

Timing cover bolts (551432)
Valley cover bolts (551433)
Water pump bolts (551434)
Rear main cover bolts (551435)
Steam crossover bolts (551437)
Bellhousing bolts (551652)
Oil pan bolts (551680)
Starter bolts (551681)
Exhaust manifold bolts (551696)
Oil pump and pickup bolts (551725)
Engine mount bolts (551427)
Fuel rail bolts (551428)
Crankshaft and camshaft sensor bolts (551430)
Throttle body bolts (551431)
Ignition coil and bracket bolts (551426)
Grade 12.9 flexplate bolts (551926, 6 pieces)

Specifications

Compatible with LS Gen III and Gen IV engines
Fastener grade: Grade 10.9 (Grade 12.9 flexplate bolts)
JIS bolt heads match factory wrench sizes
Made in the USA hardware, except imported sensor bolts (551430)

Fitment

GM LS Gen III engines
GM LS Gen IV engines

Important Notes

Does not include balancer bolts.
Does not include intake manifold bolts.
Does not include valve cover bolts.
Sensor bolts (551430) are imported; all other listed hardware is made in the USA.

Note: Always follow the manufacturer's recommended torque specifications and tightening sequence during installation.