Westwood Transmission & Drive
Westwood transmission parts and drive system components deliver power from engines to wheels across walk-behind, zero-turn, and commercial equipment. Our transmission inventory includes Westwood transmission parts, drive system parts, mower transmission assemblies, drive components, and replacement transmission parts for hydrostatic and gear-driven models. Westwood Spares stocks Westwood drive component assemblies in stock with correct specifications for axles, bearings, gearboxes, and hydrostatic units for all major model series, providing worldwide shipping on all transmission orders. These essential replacement transmission parts feature precision-machined gears, sealed bearings, and durable construction that transfer engine power reliably whilst resisting wear throughout demanding residential and commercial mowing operations.
Available Westwood Transmission & Drive
Manual Hydro Gearbox Bracket
T-30131600
Westwood
£19.85
In Stock
Hydrostatic K574C Gearbox
T-478000500
Westwood
£1,670.81
In Stock
Tuff Torq Gearbox Reservoir Oil Tank Hose
T-148014800
Westwood
£11.88
In Stock
Gearbox KXH7N Hfwd
T-480000100
Westwood
£199.99
In Stock
Tuff Torq Gearbox Pulley
T-200811600
Westwood
£39.75
In Stock
Gearbox Circlip
792125
Westwood
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In Stock
Hydrogear Gearbox Bearing Retainer
HG50925
Westwood
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In Stock
Gearbox Hydrogear Gearbox Seal Lip
HG50941
Westwood
£4.98
In Stock
Tuff Torq K66 Gearbox
T-479389100
Westwood
£913.97
Available
K46Cm Tuff Torq Gearbox With Fan
T-478000302
Westwood
£943.08
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K62 Gearbox
T-478000400
Westwood
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Tuff Torq Gearbox Pulley
T-209046100
Westwood
£45.02
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Frequently Asked Questions
How often should transmission fluid be changed?
Change hydrostatic transmission fluid every 200-400 hours or annually on serviceable units, using proper 20W-50 oil maintaining optimal viscosity. Many consumer units feature sealed transmissions marketed as maintenance-free lasting 300-600 hours before replacement.
Why won't my Westwood move forward or backward?
Non-movement indicates disengaged bypass levers left in freewheel position, broken drive belts, low transmission fluid, or failed hydrostatic units. Check bypass lever position first; verify belt condition second before diagnosing transmission failure.
What causes transmission to work when cold but fail when hot?
Hot-failure symptoms indicate worn internal components allowing fluid bypass when heated, low fluid levels reducing hydraulic pressure, or damaged pump surfaces losing compression. Typically requires transmission replacement rather than repair.
Can sealed transmissions be serviced?
Sealed transmissions can be drained and refilled through vent holes requiring unit removal, though manufacturer discourages servicing. Fresh 20W-50 oil sometimes extends life temporarily but often just delays inevitable replacement.
How do I purge air from hydrostatic transmission?
Purge air by engaging bypass levers, raising rear wheels, running engine whilst moving control levers forward and backward five times, then disengaging bypass and repeating. Air causes spongy response and power loss.