
OE
Pack of 1
OE
Pack of 1
GM Genuine Parts Cylinder Head Bolt
GM Part #55490324
ACDelco Part #55490324
About this product
GM Genuine Parts Bolts are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These bolts fasten vehicle components together. GM Genuine Parts are the true OE parts installed during the production or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
- Fastens vehicle's components together
- Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
- GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
- Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type
- GM regularly updates production and service part designs to integrate new materials and technologies
Attached WasherNo
Head TypeHex
MaterialSteel
Heat HardenedYes
Bolt Grade10.9
FinishZinc Phosphate
Self TappingNo
Self DrillingNo
ACQ RatedYes
FQA CompliantYes
SAE or MetricMetric
Shank Diameter0.47 in / 12 mm
Head Tool Size15
TypeFlange
Head ShapeHex
ClassificationOE
Thread Length3.39 in / 86 mm
Head Diameter1.22 in / 31 mm
Shank Length3.94 in / 100 mm
Overall Length8.35 in / 212 mm
Thread DirectionClockwise (Right)
Attached WasherNo
MaterialSteel
Bolt Grade10.9
Self TappingNo
ACQ RatedYes
SAE or MetricMetric
Head Tool Size15
Head ShapeHex
Thread Length3.39 in / 86 mm
Shank Length3.94 in / 100 mm
Thread DirectionClockwise (Right)
Head TypeHex
Heat HardenedYes
FinishZinc Phosphate
Self DrillingNo
FQA CompliantYes
Shank Diameter0.47 in / 12 mm
TypeFlange
ClassificationOE
Head Diameter1.22 in / 31 mm
Overall Length8.35 in / 212 mm
24 Months/Unlimited Miles Limited Warranty for Parts (plus Labor if installed by a GM dealer)
Please visit our warranty page on Gmparts.com for full warranty details.
