Front wipers on a 2003 Lexus RX300 are typically 24 inches on the driver's side and 18 inches on the passenger’s side; the rear blade is about 12 inches. This guide breaks down the standard sizing and how to verify the correct replacements for your specific vehicle.
Wiper blade sizes can vary slightly by market, trim, and aftermarket options. Always confirm with your owner’s manual, the blade packaging, or a trusted parts catalog before purchasing.
Front wiper blade sizes
The RX300 uses two different blades on the front, one for each side. Below are the commonly specified lengths for this model year.
- Driver-side blade: 24 inches
- Passenger-side blade: 18 inches
Variations do exist, with some brands offering 23" or 19" alternatives depending on the mounting style or regional specs. Always check the packaging or a trusted parts database to confirm exact fit for your car.
In short, for standard front replacement, plan on a 24" driver-side blade and an 18" passenger-side blade. If your vehicle has a nonstandard mounting or you notice a different sweep, recheck the measurement before purchasing.
Rear wiper blade size
The RX300 also features a rear window wiper blade, which is typically a single blade around 12 inches in length, though some aftermarket options may vary slightly in length.
- Rear blade: 12 inches
When shopping, you’ll often find rear blades listed as 11" to 12" depending on the brand. If in doubt, measure the current blade or confirm via the vehicle’s manual or retailer’s fit guide.
How to verify and replace
To ensure you buy the correct blades, verify the exact lengths against your current blades or the official parts catalog for your vehicle’s VIN, market, and trim. Replacement involves matching the blade length and mounting type (hook, side-pin, or bayonet) to your wiper arms. The driver-side blade is typically longer due to the driver's vantage point and sweep pattern.
Verification tips
Look for the length printed on the blade or packaging, and use a model-year/market filter in retailer catalogs. If you’re unsure, take the old blades to the store or consult the dealer parts counter for an exact fit.
Summary: For a 2003 Lexus RX300, front wipers are typically 24 inches on the driver’s side and 18 inches on the passenger’s side, with a 12-inch rear blade. Always verify with your manual or a reputable parts catalog to accommodate regional or aftermarket variations.
Summary
The RX300’s standard front blade sizes are 24" and 18" (driver and passenger), plus a 12" rear blade. Confirm exact measurements before purchase to ensure a precise fit.


