Includes (2) 532173437 Idler PulleysNew, Bulk PackedGenuine OEM Replacement Part # 532173437-2PKConsult owners manual for proper part number identification and proper installationPlease refer to list for compatibilityCompatible with the following: Ryobi: HDK19H42 Husqvarna: LTH 1342, LTH 1342 A, LTH 1342 B, LTH 1342 C, YTH 1342 XPA, YTH 1452 XPA, YTH 1542, YTH 1542 A, YTH 1542 B, YTH 1542 C, YTH 1542 D, YTH 1542 E, YTH 1542 XP, YTH 1542 XP, YTH 1542 XPD, YTH 1542 XPE, YTH 1542 XPF, YTH 1542 XPG, YTH 1542 XPT, YTH 1842, YTH 1848 XPA, YTH 1848 XPB, YTH 18542, YTH 2042, YTH 2048 A, YTH 2242 A, YTH 2242 B, YTKH 1542 XPA, YTKH 1542 XPB, YTKH 1542 XPC, CO185H42STA, PD24PH42ST, PK20H42YT, PO15542LT, PO16542LT, PO17452LTX, PO17542LT, PO175H42LT, PO18542LT, PXT16542, SO17542LT, SO19H42LT, PO17542LT, PO18542LT, XT18542LT, XT185H42LT, PO16542LT, PBA19542L, PB1842LT, PB185H42L, CO17542LT, PB18H42LT, PB19H42LT, XT24H42LT, XT24H42YT, Y1242D, WE145H42F, WE12542F, WE14542K, WE14542L, WE16542D, WE18542F Poulan: CO17542LT, HD17542, PBA19542LT, PBA19542LT, PD17542LT, PD17542LT, PO14542B, PO14542C, PO14542D, PO14542E, PO14542F, PO17542LTX, PO17542STD, PR17542STA, PR17542STB, PR17542STC, SO17542LT, PD185H42ST, PRK17H42STB, PR1742STA, 96012003100, PB18542LT, PPR20H42STC, PD1842ST, PR1842STA, HD1842, PPR1742STC, PO165H42C, PB185H42LT, CN1842ST, PK1942LT, PR16H42STA, PR185H42STA, PR18542STA, XP24H42LT, PB155G, PK19H42LT Weed Eater: WE165T42A, WE16542E, WET2242STB, S165H42A