ZF 3303199002 – Marine Gearbox Gasket & Seal Rebuild Kit for ZF 3M/5M and Hurth HBW35/HBW50 (OEM Fit, Complete Spring–Disc–Seal Set)

ID 1232470

$ 708.71

1-2 weeks delivery time

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The ZF 3303199002 Gasket & Seal Rebuild Kit is an OEM-geometry service package for ZF 3M, ZF 5M, Hurth HBW35 and Hurth HBW50 marine gearboxes. This set renews critical static and dynamic sealing zones, clutch compression disc groups, and wear-compensation interfaces. The kit contains sealing rings, inner/outer clutch discs, compression O-rings, thrust washers, carrier springs, keys, and multi-size shims for accurate preload and leak isolation. Key operating range: -40°C to +120°C (-40°F to +248°F) depending on elastomer seat location; cooler and plug seals tolerate up to 24.1 bar (350 PSI) in pump-cooler oil channels. Packed size approx. 30 × 20 × 7 cm (11.8 × 7.9 × 2.8 in), weight approx. 0.6 kg (1.32 lbs). Optimized for continuous marine duty, transmission oils, compression loads, and salt-spray zones.

Description
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ZF 3303199002 Marine Gearbox Gasket & Seal Rebuild Kit – Complete Service Set for ZF 3M/5M and Hurth HBW35/HBW50

Parameter	Specification
Brand / Manufacturer	ZF Friedrichshafen AG (OEM fitment geometry)
Part Number	3303199002
Transmission Compatibility	ZF 3M, ZF 5M, Hurth HBW35, Hurth HBW50 series marine & industrial gearboxes
Replaces ZF Kit Numbers	947.72.631.01, 500436 (ZF maintenance cross-reference)
Packed Size	Approx. 30 × 20 × 7 cm (11.8 × 7.9 × 2.8 in)
Weight	Approx. 0.6 kg (1.32 lbs)
Pressure Endurance Zones	Up to 24.1 bar (350 PSI) at pump and cooler oil channel seals
Temperature Service Range	-40°C to +120°C (-40°F to +248°F) depending on seal seat location, O-ring compound 70 Shore A
Media Resistance	Transmission oils, hydraulic fluids, marine spray, salt-spray & compression zones
Elastomer Material Classes	NBR (oil seals), EPDM (spray/ozone-safe connectors), synthetic blends (compression zones, FKM when shaft seat demands)
Installation Type	Direct OEM fit, workshop and onboard service procedures supported

Kit Contents

1 × 0634 502 009 Shift cover sealing ring
1 × 0634 306 179 Shift fork shaft O-ring
2 × 3306 301 016 Drain plug / oil dipstick sealing rings
4 × 3304 301 015 Cover gaskets
1 × 3306 301 015 Shifting cover gasket
1 × 0634 301 830 Input shaft oil seal
1 × 0634 300 371 Output shaft oil seal
2 × 0501 336 515 Thrust washers (bearing/gear preload groups)
4 × 3304 304 040 Inner clutch discs
4 × 3304 304 021 Outer clutch discs
3 × 3306 304 024 Disc carrier springs
1 × 0631 501 634 Output shaft key
Clutch pack shims: 2×0.15 mm, 2×0.20 mm, 2×0.30 mm, 2×0.40 mm, 2×0.50 mm
Shaft shims: 2×0.40 mm, 2×0.50 mm (input/output wear-comp groups)
Torque sequence and assembly reference insert

Technical Benefits

Restores critical sealing integrity for oil pressure plates and pump/cooler channels
Prevents oil leakage and air/water ingress in static and dynamic joints
Includes carrier springs and clutch discs to renew compression packs
Extends gearbox and oil-routing sections service life
OEM-fit groove geometry avoids extrusion gaps and misalignment leaks
Compatible with saltwater and oil media, high vibration endurance sections

Installation & Service Notes

Install into cleaned and lightly oiled gasket/seal seats (do not twist O-rings)
Follow OEM torque and sequence reference (provided in kit insert)
Ideal for scheduled maintenance or overheated/water-spray ingress failures
Standard sockets and metric wrenches fit service ports and preload groups
Inspect shims to maintain correct clutch disc preload and shaft centering

Application Zones

Shift cover static seal junctions
Pump–support and pressure plate sealing groups
Input and output shaft dynamic oil seats
Cooler port plug sealing groups
Compression and fastener isolation seating

Engineered to restore pressure stability, renew oil routing integrity, and maintain the chemical/thermal endurance required for long-duty marine transmission systems.