Genuine BYPY® SFT/SO Series 1-1/4" x 20-Spline Quick Release Yoke
Restore a safe and reliable connection between your PTO driveline and tractor with this genuine BYPY® SFT/SO Series 1-3/4" x 20-spline quick release yoke. Designed for compatible Bondioli & Pavesi® SFT/SO power take-off shafts, this genuine replacement yoke delivers the strength, precision and durability required for high-horsepower agricultural applications.
Featuring a 1-3/4" diameter, 20-spline quick release coupling, this yoke allows fast, tool-free attachment and removal from the tractor PTO shaft while maintaining a secure locking connection during operation. It is an ideal replacement for worn, damaged or seized quick-release yokes that no longer engage correctly.
Manufactured to suit the heavy-duty 42 mm x 130 mm universal-joint configuration used on compatible SFT/SO Series drivelines, this genuine Bondioli & Pavesi component allows damaged driveline parts to be replaced individually, avoiding the unnecessary expense of replacing the complete PTO shaft. SFT Series drivelines are engineered for high-torque agricultural applications and extended service life. :contentReference[oaicite:0]{index=0}
BYPY® OEM Cross-Reference
Replaces OEM Part Numbers:
- BYPY / Bondioli & Pavesi: 5720S3851
Technical Specifications
- Brand: Genuine BYPY® / Bondioli & Pavesi®
- Part number: 5720S3851
- Component type: Quick release PTO yoke
- Compatible series: SFT/SO Series
- Shaft diameter: 1-3/4"
- Spline count: 20 splines
- Retention method: Automatic quick release locking collar
- Cross kit cap diameter: 42 mm
- Cross kit overall width: 130 mm
- Application: Extra-heavy-duty agricultural PTO drivelines
Key Features
- Genuine Bondioli & Pavesi replacement component
- Designed for compatible SFT/SO Series PTO shafts
- 1-3/4" x 20-spline quick release coupling
- Quick release collar allows rapid attachment and removal
- Heavy-duty 42 mm x 130 mm universal-joint configuration
- Suitable for repairing damaged or worn tractor-end yokes
- Maintains reliable torque transmission under heavy loads
- Allows individual driveline components to be replaced without purchasing a complete PTO shaft
Check Compatibility Before Ordering
PTO yokes may appear identical while using different shaft diameters, spline counts, locking systems or universal-joint sizes. Before ordering, confirm that your driveline matches the specifications of BYPY part number 5720S3851.
- Confirm the tractor PTO shaft measures 1-3/4"
- Confirm the shaft has 20 splines
- Verify the existing yoke uses a quick release locking collar
- Measure one cross-kit bearing cap diameter: 42 mm
- Measure the complete cross-kit width: 130 mm
- Compare the original yoke and driveline identification before installation
The C&M Difference
Collier & Miller supplies genuine PTO driveline components backed by practical agricultural parts knowledge. Our experienced team can help identify the correct replacement yoke by confirming the shaft diameter, spline count, locking style, universal-joint dimensions and driveline series. This helps minimise downtime and reduces the risk of ordering incompatible PTO components.
Expert Maintenance Review
When replacing a quick release yoke, inspect the complete PTO driveline and the tractor PTO shaft. Check the splines for wear or corrosion and ensure the locking collar and retaining balls move freely without sticking. A damaged locking mechanism can prevent the yoke from engaging correctly and may lead to premature wear or accidental disengagement during operation. Bondioli & Pavesi recommends ensuring the locking collar returns fully to the locked position after installation.
Inspect the universal-joint cross kit, bearing caps, telescoping tubes and safety guards at the same time. Replacing worn driveline components together will help maximise service life and maintain smooth PTO operation.
Installation Tip
Before beginning work, shut down the tractor and implement, remove the ignition key and ensure the PTO cannot rotate. Clean the tractor PTO splines and apply a light coating of grease before fitting the replacement yoke. Pull the quick release collar fully back, align the splines and slide the yoke onto the PTO shaft until the locking mechanism engages.
After installation, release the collar and pull firmly on the yoke to confirm it is securely locked in place. Check that the universal joint articulates freely and the telescoping shaft slides smoothly throughout its operating range. Always refit all PTO guards and shields before returning the machine to service. Never operate a PTO driveline with damaged or missing safety guarding.