
OE
Pack of 1
OE
Pack of 1
GM Genuine Parts Cylinder Head Bolt
GM Part #55494557
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
Thread TypeCoarse
FinishZinc
Head TypeHex
MaterialSteel
Attached WasherNo
Bolt Grade10.9
Self DrillingNo
Self TappingNo
Head Tool Size18
Head ShapeRound
SAE or MetricMetric
TypeFlange
ClassificationOE
Head Diameter1.26 in / 32 mm
Shank Length2.46 in / 62.5 mm
Thread Length137.5mm
Overall Length8.74 in / 222 mm
Shank Diameter12.8mm
Thread TypeCoarse
Head TypeHex
Attached WasherNo
Self DrillingNo
Head Tool Size18
SAE or MetricMetric
ClassificationOE
Shank Length2.46 in / 62.5 mm
Overall Length8.74 in / 222 mm
FinishZinc
MaterialSteel
Bolt Grade10.9
Self TappingNo
Head ShapeRound
TypeFlange
Head Diameter1.26 in / 32 mm
Thread Length137.5mm
Shank Diameter12.8mm
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.