Premium Quality Replacement Part. Compatible with Ariens Models. 991085 – Max-Zoom 48, Koh. (Sn: 020000 & Above). 991086 – Max-Zoom 52, 24hp Kaw. 991087 – Max-Zoom 60, 24hp Kaw. 991151 – Apex 60, Kaw. Fr (Sn: 000101 – 014999). 991153 – Apex 48, Koh. (Sn: 000101 – 014999). (Sn: 015000 & Above). 991155 – Apex 52, Koh. 991157 – Apex 60, Koh. (Sn: 000303 & Above). 991158 – Zenith 60, 23.5hp Kaw. Fx (Sn: 040000 & Above). 991159 – Apex 52, 23hp Kaw. Fr (Sn: 040000 – 059999). 991173 – Apex 48, Koh. Carb (Sn: 000101 – 014999). 991175 – Apex 52, Koh. 991177 – Apex 60, Kaw. Fr, Carb (Sn: 000101 – 014999). 991311 – Apex 48, Kaw. 991312 – Apex 52, Kaw. Compatible with Gravely Models. 890110 – 60 X-Factor Deck (Sn: 020000 & Above). 991076 (Pro-Turn 148) – 48, Kaw. (Sn: 000101 & Above). 991077 (Pro-Turn 152) – 52, Kaw. 991078 (Pro-Turn 160) – 60, Kaw. 991079 (Pro-Turn 148) – 48, Kaw. (Sn: 000101 – 019999). 991080 (Pro-Turn 152) – 52, Kaw. 991081 (Pro-Turn 160) – 60, Kaw. 991095 (Pro-Turn 148) – 48, Koh. Efi (Sn: 000101 – 019999). 991096 (Pro-Turn 152) – 52, Koh. 991128 (Pro-Turn 148) – 48, Kaw. Fx (Sn: 000101 – 009999). Fx (Sn: 000101 & Above). 991129 (Pro-Turn 152) – 52, Kaw. Fx (Sn: 000101 – 016999). 991130 (Pro-Turn 160) – 60, Kaw. 991131 (Pro-Turn 148) – 48 (Sn: 000101 & Above). 991132 (Pro-Turn 152) – 52, Koh. Zt (Sn: 000101 – 009999). 991133 (Pro-Turn 160) – 60, Koh. 991134 (Pro-Turn 148) – 48 (Sn: 000101 & Above). 991135 (Pro-Turn 152) – 52, Koh. Ezt Efi (Sn: 000101 – 009999). 991136 (Pro-Turn 160) – 60, Koh. 991137 (Pro-Turn 148) – 48, Kaw. Fx Carb (Sn: 000101 – 009999). 991138 (Pro-Turn 152) – 52, Kaw. 991139 (Pro-Turn 160) – 60, Kaw. 991215 (Pro-Turn 48) – 48, Kaw. Fs (Sn: 000101 – 009999). 991216 (Pro-Turn 52) – 52, Kaw. 991217 (Pro-Turn 60) – 60, Kaw. 991218 (Pro-Turn 48) – 48, Koh. 991219 (Pro-Turn 52) – 52, Koh. 991220 (Pro-Turn 60) – 60, Koh. 991221 (Pro-Turn 48) – 48, Kaw. Fs, Carb (Sn: 000101 – 009999). 991222 (Pro-Turn 52) – 52, Kaw. 991223 (Pro-Turn 60) – 60, Kaw. 991300 (Pro-Turn 148) – 48, Rear Discharge, Kaw. (Sn: 002529 – 019999). 991303 (Pro-Turn 148) – 48, Side Discharge (Sn: 000101 – 019999). 992267 (Pro-Turn 260) – 60, Koh. Zt (Sn: 050000 – 069999). 890018 – 60 Deck For Pro-Master 320xdz Mower (Sn: 001000 & Above). 890100 – 60 Deck For Rapid Xz Side Discharge Mower (Sn: 000101 & Above). 890101 – 52 Deck For Rapid Xz Side Discharge Mower (Sn: 000101 & Above). 991082 (Zt 48 Hd) – 48, Kaw. 991083 (Zt 52 Hd) – 52, Kaw. (Sn: 020000 – 029999). 991152 (Zt Hd 48) – 48, 25hp Koh. Kt (Sn: 000101 – 014999). 991154 (Zt Hd 52) – 52, 25hp Koh. 991156 (Zt Hd 60) – 60, 26hp Koh. 991160 (Zt Hd 44) – 44, Kaw. 991162 (Zt Hd 48) – 48, 23hp Kaw. 991164 (Zt Hd 52) – 52, 23hp Kaw. 991166 (Zt Hd 60) – 60, 24hp Kaw. 991180 (Zt Hd 44) – 44, Kaw. 991182 (Zt Hd 48) – 48, 23hp Kaw. 991184 (Zt Hd 52) – 52, 23hp Kaw. 991186 (Zt Hd 60) – 60, 24hp Kaw. 988172 – Pro-Walk 48, Kaw. Fs (Sn: 000101 & Above). 988173 – Pro-Walk 52, Kaw. 988174 – Pro-Walk 60, Kaw. 988185 – Pro-Walk 48, Kaw. 988186 – Pro-Walk 52, Kaw. 988187 – Pro-Walk 60, Kaw. 890012 – 50 Deck For Pro-Master 310 Mower (Sn: 000101 – 000500). 890012 – 50 Deck For Pro-Master 310 Mower (Sn: 000501 & Above). (Sn: 010000 – 011999). (Sn: 000101 – 000500). Propane (Sn: 000101 & Above). This is the NEW Design of the old version. 3x Spindle Assembly: Ariens: 05129800, 59202600, 69207500, 59125000, 58810800, 59109800, 59215400, 69221300, 59225700. Gravely: 69207500, 59202600, 05129800, 59125000, 58810800, 59109800, 59215400, 69221300, 59225700. Length: 172 mm – 6.77 in. Outer Diameter: 125 mm – 4.92 in. Mounting Hole Distance: 102 mm – 4.01 in.