GM LS Head Bolts (2 sets required) – 1st Design

Description

LS Head Bolts – 1st Design

This is for engines using the earlier version LS head bolts, with 3 different lengths.

2 sets of HB171 are required, one for each head.

4.8L / 293 OHV V8 16V GM 3.780" Bore 99-04
5.3L / 325 OHV V8 16V "C" GM 3.780" Bore 99-04
5.7L / 346 OHV V8 16V LS Series "G,S" Chev. 99.00mm Bore 97-04
6.0L / 364 OHV V8 16V LS Series Vortec GM 4.000" Bore 99-04

For engines using the 2nd design of head bolts, see our HB230 (below).