ZF TRANSMISSIONS 1290303213 GEAR 3RD SPEED 20T – Precision-Cut Helical Gear for ZF Manual Transmissions
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- In-stock availability for urgent repairs.
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- P/N:1290303213
ZF TRANSMISSIONS 1290303213 GEAR 3RD SPEED 20T – Precision-Cut Helical Gear for ZF Manual Transmissions
Product Overview
The ZF TRANSMISSIONS 1290303213 GEAR 3RD SPEED 20T is an OEM-quality helical gear engineered for 3rd speed synchronization in ZF manual transmissions. This 20-tooth gear (module 4.0) features precision-ground teeth with optimized 25° helix angle for smooth power transfer in ZF S5-42 and S5-47 gearboxes. Manufactured from case-hardened 17CrNiMo6 steel, it meets exact ZF specifications for heavy-duty commercial vehicle applications.
Key Features:
✔ Genuine OEM Replacement – Identical to ZF 1290303213 specifications
✔ Premium Metallurgy – 17CrNiMo6 steel (DIN EN 10084)
✔ Precision Machining – DIN 5 gear quality (AGMA 10)
✔ Wear Resistance – 1.0-1.5mm case depth (HRC 58-62)
✔ Noise Reduction – 25° helix angle minimizes NVH
Technical Specifications:
- Part Number: 1290303213
- Type: 3rd speed helical gear (20 teeth)
- Material: 17CrNiMo6 case-hardened steel
- Module: 4.0mm
- Pressure Angle: 20° normal / 16.5° transverse
- Helix Angle: 25° right-hand
- Face Width: 38mm (±0.05)
- Bore Diameter: 60.000-60.025mm
- Hardness:
- Core: 28-32 HRC
- Teeth: 58-62 HRC
- Runout Tolerance: ≤0.025mm TIR
- OEM Reference: ZF 1290303213
Professional Installation Guide:
Pre-Installation Checks:
- Inspect mating gear for wear (max 0.08mm pitting)
- Verify shaft journal diameter (59.975-60.000mm)
- Clean oil passages with compressed air
Installation Tools Required:
- Induction heater (max 150°C)
- Hydraulic press with 60mm mandrel
- Dial indicator (±0.01mm accuracy)
Installation Procedure:
- Heat gear to 110-120°C for interference fit
- Align timing marks with mating gear
- Press onto shaft using alignment tool
- Torque retaining nut to 400Nm +45° angle
Post-Installation Verification:
- Check tooth contact pattern (75% contact area)
- Measure backlash (0.10-0.15mm)
- Perform 800km run-in at ≤75% load
Packaging & Shipping
By Express : Suitable for sample order or <50 KG Fast:3-10 days High shipping cost Door to door service
By Air : Suitable for >50 KG Fast: 3-7 days Lower than express cost Airport to airport service
By Sea: Suitable for >300 KG Lower cost port to port service
As a leading supplier and dealer of ZF parts, we provide genuine components to maintain the integrity and efficiency of your gearbox system. Trust in our expertise and quality assurance to keep your ZF gearbox running smoothly.
| Installation Tips | Surface prep: Degrease with ZF Cliclean 3 solvent； Gasket application: Use Loctite 518 in continuous 1.5mm bead；； Alignment: Install using factory alignment pins (ZF tool B40 5003 recommended)；； Torque sequence:Initial: 12Nm star pattern—–Final: 28Nm + 90° angle torque；；；； Post-install: Pressure test at 2.5 bar before fluid fill |
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