Homelite Pre-Filter Part# UP-05624 was used on the air cleaner system of the following Homelite Multi-Purpose Saws; MP38, MP381, and MP38i. Even if your model is listed here, all Homelite parts are UT and/or serial number specific. Please refer to a parts breakdown for your particular model and UT number to assure that this is the correct part for your machine before you order.