Front blades are 24 inches on the driver's side and 19 inches on the passenger side; the rear blade is 11 inches.
Front wipers: sizes for the 2007 Hummer H3
These are the standard front blade lengths used on most 2007 H3 models. For exact replacement, verify against your current blades or the owner's manual, since some aftermarket sets may use slightly different sizes for different trims or production runs.
- Driver's side blade: 24 inches
- Passenger's side blade: 19 inches
When ordering front blades, specify two different lengths (24" and 19"). Many aftermarket sets sell as a pair that matches these two lengths.
Rear wiper: size for the 2007 Hummer H3
The rear wiper on the H3 is smaller and typically measures about 11 inches in length.
- Rear blade: 11 inches
As with the fronts, confirm the rear size before purchase, since a few late-year or dealer-installed options may differ by market or trim level.
How to verify the correct blade sizes on your H3
Check the owner's manual or a parts catalog for your exact year and trim. If you already have blades installed, measure the current blade length or compare with the blade frame; when in doubt, bring the blade to an auto parts store and have staff help verify compatibility with your wiper arms.
Summary
For a typical 2007 Hummer H3, plan for 24" driver-side front, 19" passenger-side front, and an 11" rear blade. Always verify by measuring or checking the manual, as very late production runs or regional variants can differ.