AEROFLOW PERFORMANCE HEADER BOLT KIT [CHEV V8 307-327-350 SMALL BLOCK MOTOR]

AEROFLOW PERFORMANCE 8740 GRADE HEADER BOLT KIT
12 POINT BOLTS
CHEV V8 307-327-350 SMALL BLOCK MOTOR

01/1968-1969 HOLDEN [HK-HT SERIES]
08/1968-1969 HOLDEN [HK MONARO GTS 327]
05/1969-1974 HOLDEN [HT-HG-HQ MONARO GTS 350]
07/1971-1974 HOLDEN [HQ MONARO LS & STATESMAN]

When installing aftermarket exhaust headers you will need new header bolts, factory exhaust manifold bolts won't work as the flange could be thicker or the original bolts could be damaged.

These Aeroflow header bolts are made from chrome moly 8740 material for high strength properties. They are coated in a black oxide for protection and long-lasting durability. Each bolt features a compact 12-point head which is ideal for use where space is minimal especially on aftermarket header flanges.

SPECIFICATIONS:
12 X BOLTS
18.95MM UNDER HEAD LENGTH
13.40MM HEAD DIAMETER
3/8"-16 THREAD

12 X FLAT WASHERS
16.50MM OUTSIDE DIAMETER
9.55MM INSIDE DIAMETER
2.30MM THICKNESS

IMPORTANT NOTE:
TIGHTEN BOLTS TO GENERAL MOTORS / HOLDEN SPECIFICATIONS