MTD Throttle Control part# 811-0185 was used on the following walk behind lawn mower models; 123-238H062, 122-474R000, 122-478R083 and the same series, but ending with 084, 087, 095, 105, 111, 115, 119, 129, 131, 136, 157, 192, 205, 305, 316, 331, 352, 372, and 736. 122-479R013, 122-475R013 and the same series, but ending with 000, 002, and 102. 122-476R033, 122-476R304, 122-478E000 and the same series, but ending with E019, E095, E701, R000, R002, R016, R018, R019, R032, R033, R034, R045, R059, R062, and R063. 123-477D129, 123-478A000 and the same series, but ending with A016, A021, A105, A111, A205, A352, A372, A701, A702, C019, C084, C136, F131, F736, and H062. 123-479A013, 122-488R054, 122-488R137, 122-488R000, and 122-488R009. There may be models that use this part that we do not have listed here. Please refer to your owners manual or a parts breakdown for your model, to assure that this is the correct part for your machine, before you order.