Spindle Assembly Replace Hustler 36"/42"/48"/54"/60" OEM # 601804, 607418

Spindle Assembly Replace Hustler 36"/42"/48"/54"/60" OEM # 601804, 607418

This spindle assembly replaces OEM part numbers 601804 and 607418, and is compatible with many Hustler and Big Dog mower models with 36" / 42" / 54" / 60" decks.

✅ Fully Compatible with:
• Hustler Raptor SD / SDX / Sport – 36", 42", 54", 60"
• Big Dog Alpha MP, Blackjack, Stout – 42", 48", 54", etc.
(No serial number version difference for these deck sizes)

OEM Part No: 601804, 607418
Fits 42" 48" 54" Deck Hustler Sport
Compatible with: 36" 42" 48" 54" 60" Deck Hustler Raptor SD, SDX

Fits Big Dog models A Series 42", A Series 46", Alpha MP 42", Alpha MP 48", Alpha MP 54", Blackjack 48", Blackjack 54", Stout 48", Stout 54", R Series, R-760, 931485EX, 931493EX, 931501EX, 931519EX, 931527EX, 931535EX, 931485AU, 931493AU, 931501AU, 931519AU, 931527AU, 931535AU, 931337EX, 931345EX, 931352EX, 932921EX, 932939EX, 932947EX, 935304EX, 935312EX, 933168EX, 933549EX, 933556EX, 935502EX

Fits Hustler models FasTrak SD 36", FasTrak SD 42", Raptor Flip-Up 48" , Raptor Flip-Up 54", Raptor SD 36", Raptor SDX 36", Raptor SD 42", Raptor SDX 42", Raptor SD 48", Raptor SDX 48", Raptor SD 54", Raptor SDX 54", Raptor SD 60", Raptor SDX 60", Sport 36", Sport 42", Sport 48", Sport 54", 929133EX, 929869EX, 930198EX, 930206EX, 930214EX, 930222EX, 930230EX, 930651EX, 932285EX, 932293EX, 932301EX, 932541EX, 932558EX, 932566EX, 932491EX, 932517EX, 933473EX, 935262EX, 935270EX, 935288EX, 935296EX, 936534EX, 936542EX, 936559EX, 938365EX, 938381EX, 938399EX, 938407EX, 938423EX, 940494EX, 940510EX

HUSTLER PARTS: 601804
Fits Model - Hustler: 929125, 929125, 929133, 929133, 929463, 929463, 929471, 929471, 929521, 929539, 929547, 929554, 929570CE, 929588CE, 929596, 929604, 929612, 929851, 929869, 930081, 930198, 930206, 930206US, 930214, 930222, 930222US, 930230, 930255, 930263, 930271, 930289, 930297, 930305, 930313, 930651, 930669, 930677, 930685, 930693, 930701, 930719, 930727, 931303, 931311, 931329, 931337, 931345, 931352, 931600CE and 931618CE zero-turn mowers
931428EX, 931436EX, 931444EX, 931451EX, 931469EX , 931477EX, 933572EX, 933580EX & 933598EX

⚠️Important Note for 48" Raptor SD / Flip-Up Decks:
Hustler made a spindle change based on serial number for 48" deck models:

If your mower's serial number is below 20012918, this spindle (601804 / 607418) is compatible.

If your mower's serial number is 20012918 or higher, this spindle will not fit. Please use the updated assembly with housing 607419 and shaft 601829.

✅ Please check your mower's serial number before purchase if you have a 48" deck.

Thread: 5/8"-11
Housing Length: 112mm    
Shaft Length: 137mm
Mounting Hole Distance: 115mm