NEW Hydro-Gear ZT-3100 Transaxle LEFT HAND : 

ZM-KPEB-SN8C-3MTX 

• Commercial Performance: Entry-level commercial-grade ZT-3100 transaxle with a 1" axle shaft, high-efficiency 10cc pump, and 16cc motor. HIGH TORQUE AND 8-9 MPH PERFORMANCE
• Fitment: Guaranteed fit for specific Country Clipper XLT models and compatible with several Gravely & BAD BOY zero-turn mowers.
• Current MSRP: Approximately $ 799.99 + FREIGHT
• The 
  Hydro-Gear ZM-KPEB-SN8C-3MTX
   (Left Hand) transaxle is a commercial-grade ZT-3100 drive system used primarily in high-end zero-turn mowers.
• Fitment & OEM Cross-Reference Chart

  Brand	Model(s)	OEM Part Number (LH)
  Country Clipper	XLT Series	D-3968-02
  Gravely	ZT HD, Pro-Turn	05102154 (Reference)
  Bad Boy	ZT Elite	050-2081-00
  Briggs & Stratton	Generic ZT-3100	84010394	Country Clipper XLT : This specific Hydro-Gear model number: ( ZM-KPEB-SN8C-3MTX  is the direct factory replacement for Country Clipper part numbers  D-3968-02   Gravely & Bad Boy: While many Gravely and Bad Boy models use the ZT-3100 series, they often use different internal gear ratios or control arm configurations (e.g., ZL or ZJ prefixes). Always verify that your units have the 1-inch axle shaft and the specific "ZM" high-torque gear reduction. Hardware Fitment: These units feature a 4-bolt mounting pattern and are designed for mowers with a Gross Vehicle Weight (GVW) of up to 1,200 lbs.

The "ZM" Advantage The "ZM" prefix indicates the ZT-3100 high-performance version. Many buyers mistakenly look at the  ZT-2800  (ZH/ZJ) which looks identical but has lower torque capacity. The "ZM" 350 lb-ft torque output and 9 mph speed rating MAKES THESE THE STUD DADDIES! BANG A GONG LET'S GET IT ON! WE WANT YOUR BUSINESS FOREVER! EVERYBODY WINS. ELITE PRODUCT, GREAT PRICES &  SAME DAY UPS GROUND SHIPPING THE PHOTOS ARE FOR REFERENCE ONLY! MAKE SURE THE PART FITS BASED OFF YOUR PART NUMBER AND NOT OFF THE PHOTO!! I USE AI, SO BE SURE TO MAKE SURE OF FITMENT BEFORE PURCHASE. I DON'T EAT FREIGHT BOTH WAYS ON BUYER ERROR!