Search by number: 2009 Lexus RX350 3.5L Alternator ProAmp 11137 $172.00 each OPTIONS: Optional, 130 Amp; With Towing Pkg. ProAmp 11136 $174.00 each OPTIONS: Standard, 100 Amp; Without Towing Pkg. ProAmpN 11136N $195.00 each OPTIONS: Standard, 100 Amp; Without Towing Pkg. ProAmpN 11137N $255.00 each OPTIONS: Optional, 130 Amp; With Towing Pkg. Why is there more than one unit for my car? Look at the TECH SPECS when more than one unit is shown for your car. AMPS (ELECTRIC CAPACITY): must match you vehicle electric requirements. *** Call us if you are looking to increase your unit capacity! OE ALTERNATOR MANUFACTURER: It is recommended to match the Make of your alternator