• 437-0006
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Spartan RZ Deck Spindle (437-0006-00)

Spartan RZ Deck Spindle (437-0006-00)

$168.95 USD
$148.57 USD $168.95 USD
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Quantity In Stock:6

437-0006-00

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Model Compatibility

Spartan Mower Deck Spindle Assembly

Genuine Spartan Factory Replacement Spindle (437-0006-00)

Simplify your deck repair with this complete, factory-assembled Spartan spindle mechanism. Built to demanding OEM specifications, this spindle provides smooth blade rotation and structural durability under high load conditions. The assembly ships fully put together for a direct, drop-in replacement.

Important Fitment Notes:

  • This spindle comes standard on RZ, RZ Pro, and RZ HD riding mower models.
  • Does NOT fit RZ-C, RT, or SRT models. (Note: While some RZ-C sub-models share similar engine names, the RZ-C platform generally requires a different spindle size. Please confirm your exact model number below).

Pro Maintenance Tip: When replacing a damaged spindle, always thoroughly inspect the condition of your spindle shaft key, pulleys, mounting bolts, and flange nuts. Reusing warped hardware can cause vibration and premature bearing failure. You can find these matching components below or in our You May Also Like section.

Required Hardware & Breakdown Components

Mounting Hardware (Not Included):

Pulley Installation Hardware Required:

  • Square Drive Key: 1/4" x 1" Square Key Stock (442-0001-00)
  • Spindle Screw: 1/2-20 x 1-1/4" Hex Cap Screw, Grade 5 Zinc (418-0006-00)
  • Fender Washer: 1/2" ID x 1-1/4" OD Zinc Washer (419-0003-00)

Internal Assembly Components Included:

Equipment Compatibility

This factory spindle assembly is engineered to fit the following Spartan zero-turn models:

RZ Series

  • SZRZ148724BS (RZ 48″ Briggs 25 HP Commercial)
  • SZRZ148724BX (RZ 48″ Briggs 25 HP Commercial)
  • SZRZ148691KR (RZ 48″ Kawasaki FR691)
  • SZRZ154724BS (RZ 54″ Briggs 25 HP Commercial)
  • SZRZ154724BX (RZ 54″ Briggs 25 HP Commercial)
  • SZRZ154691KR (RZ 54″ Kawasaki FR691)
  • SZRZ161730KR (RZ 61″ Kawasaki FR730)

RZ Pro Series (Tuff Torq 400 & 450 Systems)

  • SZPR248724BS (48” Briggs 25 HP Commercial)
  • SZPR248747KM (48” Kawasaki FR691)
  • SZPR254724BS (54″ Briggs 25 HP Commercial)
  • SZPR254724BX (54″ Briggs 25 HP)
  • SZPR254747KM (54″ Kawasaki FR691 / Kohler 26 HP 7000 Manual Choke)
  • SZPR261724BS / SZPR61724BS (61″ Briggs 25 HP Commercial)
  • SZPR261724BX (61″ Briggs 25 HP)
  • SZPR261747KM (61″ Kohler 26 HP 7000 Manual Choke)
  • SZPR254691KR (RZ Pro 54″ Kawasaki FR691)
  • SZPR261730KR (RZ Pro 61″ Kawasaki FR730)

RZ HD Series

  • SZHD148724BS / SZH4848724BS (48″ Briggs 25 HP Commercial)
  • SZHD148724BX (48″ Briggs 25 HP CXI)
  • SZHD148810BS (48″ Briggs 27 HP Commercial)
  • SZHD148691KR / SZH4848691KW (48″ Kawasaki FR691)
  • SZHD154724BS / SZHD154724BS (54″ Briggs 25 HP Commercial)
  • SZHD154724BX (54″ Briggs 25 HP CXI)
  • SZHD154691KR / SZHD154691KW (54″ Kawasaki FR691)
  • SZHD161724BS (61″ Briggs 25 HP Commercial)
  • SZHD161724BX (61″ Briggs 25 HP CXI)
  • SZHD161810BS (61″ Briggs 27 HP Commercial)
  • SZHD161730KR / SZHD161730KW (61″ Kawasaki FR730)

RZ Pro Series (HTE 10cc Integrated Systems)

  • SZR48724BS (48″ Briggs 25 HP Commercial)
  • SZR48747KC (48″ Kohler 25 HP Commercial)
  • 0054RZB9904 / SZR54724BS (54″ Briggs 25 HP Commercial)
  • 0054RZK9424 / SZR54747KC (54″ Kohler 26 HP)
  • 0061RZB9424 / SZR61724BS (61″ Briggs 25 HP Commercial)
  • 0061RZK9934 / SZR61747KC (61″ Kohler 26 HP)

RZ Pro Series (360 Custom Seating Platform)

  • SRPR154810BS (54” Briggs 27 HP Commercial with Oil Cooler)
  • SRPR154730KS (54″ Kawasaki FR730)
  • SRPR154747KC (54″ Kohler 25 HP Confidant)
  • SRPR161810BS (61” Briggs 27 HP Commercial with Oil Cooler)
  • SRPR161730KS (61″ Kawasaki FR730)
  • SRPR161747KC (61″ Kohler 25 HP Confidant)

RZ-C Series Cross-Listed Verification

  • SZCZ154724BX (54″ Briggs 25 HP Commercial)
  • SZCZ154691KR (54″ Kawasaki FR691)
Weight and Dimensions
Weight 5.62 lbs
No Hassle Returns

You may return parts and products for any reason within 30 days of the delivery date. All products must be unopened and returned in sellable condition. Return shipping including the purchase of shipping labels is the responsibility of the buyer. For your convenience, we offer the option to request a shipping label (the cost of shipping will be deducted from refund). The Mower Shop provides prepaid return shipping labels in the following cases: carrier damage, lost packages and incorrect items.

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