StrongArm 6289 Door Lift Support - Rear
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StrongArm

StrongArm 6289 Door Lift Support - Rear

Brand StrongArm 6289
Position Rear
Compressed Length 16.0
Cylinder Outside Diameter 18.0
End 1 Type Ball Socket (Steel) 10mm
End 2 Type Ball Socket (Steel) 10mm
Extended Length 25.0
Inner Shaft Diameter 8.0
Internal Rebound Spring No
Maximum Force 56.0
Outer Cylinder Color Black
Outer Cylinder Material Steel
Stroke Length 9.0
Universal Or Specific Fit Specific
Fits Hummer · 5 vehicles

Custom engineered. Manufactured beyond industry standards for smoother operation and longer-lasting performance.

Steel cylinder. Durable construction with a black finish for dependable support.

Specific fit. Made for a precise replacement application.

Cross-references AMS Automotive 6289, 510-1248 and 819-6889 for the same application. See all 7.

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Rear Lift Support for Hummer H3

Restore controlled rear hatch operation with this StrongArm lift support, part number 6289. It is a specific-fit gas strut engineered for the rear of the 2006-2010 Hummer H3, with dimensions and force output matched to the application for smoother opening and dependable hold-open performance.

  • Specific fit for the rear liftgate on 2006-2010 Hummer H3
  • Extended length: 25.0 in.; compressed length: 16.0 in.
  • Stroke length: 9.0 in. with 56.0 maximum force
  • Steel outer cylinder with black finish
  • Ball socket ends, 10mm at both ends
  • Inner shaft diameter: 8.0 mm

Application Details

StrongArm 6289 is a rear door lift support built for the Hummer H3 rear hatch application. The pressurized cylinder design helps maintain steady lift and controlled lowering, while the steel construction supports consistent operation over time. If you are searching for a rear liftgate strut for a 2006-2010 Hummer H3, part number 6289 matches the confirmed fitment for this vehicle line.

This part cross-references AMS Automotive 6289 for the same application.

What It Helps Fix

  • Rear hatch that will not stay open
  • Liftgate that drops too quickly
  • Weak or uneven hatch support
  • Hard-to-lift rear door operation
  • Noise or binding from a worn gas strut

Installation Notes

Replace lift supports in pairs to maintain balanced rear hatch support and consistent operation. Confirm the ball socket attachment points and 10mm end fittings before installation, and compare the compressed and extended lengths to the original support on the vehicle. For best results, verify rear fitment on the 2006-2010 Hummer H3 before ordering.

Quality Assurance

StrongArm lift supports are custom engineered and manufactured beyond industry standards for smoother operation and longer service life. Part number 6289 is built to the specified dimensions and force rating for the rear Hummer H3 application.

Related reading

This part fits 5 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2010HummerH3Rear—
2009HummerH3Rear—
2008HummerH3Rear—
2007HummerH3Rear—
2006HummerH3Rear—
Directly replaces or cross-references 7 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AMS Automotive — 6289510-1248819-688915864389C6289C96289SG230109