Cylinder Head

2023 Dodge and Ram Durango R/T Plus, AWDSECTION Cylinder Head
WARNING: This page is about a different variant/trim than selected.
CYLINDER HEAD

DESCRIPTION SPECIFICATION
Metric Standard
Valve Seat Angle 44.5Β° - 45.0Β°
Valve Seat Runout (MAX) 0.04 mm 0.0016 in.
Valve Seat Width
Intake 1.18 - 1.62 mm 0.046 - 0.065 in.
Exhaust 1.48 - 1.92 mm 0.058 - 0.076 in.
Guide Bore Diameter
Intake 7.975 - 7.997 mm 0.314 - 0.315 in.
Exhaust 7.975 - 7.990 mm 0.314 - 0.315 in.
HYDRAULIC TAPPETS

DESCRIPTION SPECIFICATION
Metric Standard
Body Diameter 21.387 - 21.405 mm 0.8420 - 0.8427 in.
Clearance (To Bore) 0.020 - 0.063 mm 0.0007 - 0.0024 in.
Dry Lash (at the valve) 3.0 mm 0.1181 in.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.