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Auto parts section for Towbar / parts

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Towbar / parts car parts - all important information about operating method, mounting, diagnostics and service life

Towbars are mechanisms used to attach a trailer to a car and tow it. They provide an even distribution of the load created by inertia and the weight of the trailer. They contribute to safe cargo transportation.

Design of towbars

The towing device consists of the following components:

  • Beam. This is attached to the body stiffeners or frame using bolts.
  • Mount. This is attached to the beam. It is designed to hold the ball. In some mechanisms, the mount and the ball are a single piece.
  • Ball. This is the main component of the coupling mechanism. It is attached to the beam or mount with the help of bolts, welding, or a special locking mechanism. There are rotary and folding mechanisms, which can easily be hidden under the vehicle after use.
  • Coupling head. This is mounted on the trailer’s drawbar. It has a recess for the diameter of the ball and a special locking lever.
  • Socket. This is used to power the trailer’s tail lights.

Maintenance tips

  • Clean and lubricate the ball regularly to protect it from wear and tear. Use special caps to prevent contamination and to keep it lubricated. They help protect products from environmental impacts when the trailer is not connected to the vehicle. If your car is equipped with a quick-release system, you will not need a cap.
  • Use graphite grease to protect parts from corrosion and abrasion. However, be aware that there are dry friction mechanisms for which lubrication is not required. Therefore, before starting work, study the technical recommendations of the automaker.
  • Keep an eye on the geometric parameters of the ball, in particular the diameter. Its shrinking by at least 1 mm may cause the trailer to detach while driving.
  • Use a torque wrench to check the threaded connections for tightness every 1000 km.
  • Do not use a towbar for towing. You could bend the beam and disrupt the shape of the auto body.
  • Do not transport loads that are too heavy. Please note that the maximum allowable load is reduced by almost half when driving on unpaved roads.

Malfunction symptoms

Towbar defects are usually detected on inspection. Deformation of the beam, loose fasteners, and corroded parts indicate that the mechanism is faulty. Play in the joint indicates abrasion of the ball or head. An inability to switch on all the lights mounted on a trailer may indicate a faulty socket or electrical wiring.

Malfunction causes

A lack or complete absence of lubrication as well as the ingress of dirt cause abrasive wear of the ball and head’s surfaces. Towing a trailer that’s too heavy or failing to follow transportation guidelines can cause the mechanism to deform or break.

Autodoc.co.uk: Only high-quality automotive products

Do you like active outdoor activities but your boot can’t store all the things you need? In our online store, you can buy a towbar for a vehicle of any brand or model. Our catalogue contains products for different payloads. You can easily find exactly what you need.

Top 10 of best sellers from the Trailer hitch section
Recommended spare parts from the Towbar / parts section. These are the sales hits. Buy our best sellling items or discover a vast selection of other attractive offers.
-23%
Charger Cable, trailer coupling 300028300113 buy 24/7!
WESTFALIA Charger Cable, trailer coupling
Article number: 300028300113
£ 53,28
incl. 20% VAT , excl. delivery costs,
  • Voltage [V]: 12
  • Installation from (in mins.): 30
  • Installation time, up to (in mins.): 60
  • Weight [kg]: 0,58
  • Similar to picture
  • WESTFALIACharger Cable, trailer coupling
  • Item number300028300113
  • Manufacturer's suggested retail price£ 69,20
  • Our price £ 53,28
  • Condition  New
Details
-23%
Plug Housing 8JD 156 151-807 buy 24/7!
HELLA Plug Housing
Article number: 8JD 156 151-807
£ 75,01
incl. 20% VAT , excl. delivery costs,
  • Mounting Type: Fitting
  • Light Design: Xenon
  • Material: Elastomer
  • Quantity: 20
  • Quantity Unit: Set
  • HELLAPlug Housing
  • Item number8JD 156 151-807
  • Manufacturer's suggested retail price£ 97,41
  • Our price £ 75,01
  • Condition  New
Details
-23%
Electric Kit, towbar 323074300113 buy 24/7!
WESTFALIA Electric Kit, towbar
Article number: 323074300113
£ 65,61
incl. 20% VAT , excl. delivery costs,
  • Trailer Hitch: E-Set with original plug-in connectors, with automatic parking assist deactivation, Connector in boot, Cable harness contains steady plus, Cable harness contains charger cable
  • Supplementary Article / Info 2: Activation required
  • Left- / right-hand drive vehicles: for left-hand/right-hand drive vehicles
  • Installation from (in mins.): 15
  • Installation time, up to (in mins.): 30
  • Weight [kg]: 0,38
  • Similar to picture
  • Number of Poles: 13
  • WESTFALIAElectric Kit, towbar
  • Item number323074300113
  • Manufacturer's suggested retail price£ 85,21
  • Our price £ 65,61
  • Condition  New
Details
-23%
Electric Kit, towbar 303352300113 buy 24/7!
WESTFALIA Electric Kit, towbar
Article number: 303352300113
£ 187,28
incl. 20% VAT , free delivery
  • Trailer Hitch: incl. original plug and socket coupling, Parking assist deactivation depends on extra equipment, Cable harness contains steady plus, Cable harness is extendable for charging cable
  • Supplementary Article / Info 2: Activation not required
  • Left- / right-hand drive vehicles: for left-hand/right-hand drive vehicles
  • Weight [kg]: 1,21
  • Installation from (in mins.): 60
  • Installation time, up to (in mins.): 90
  • Similar to picture
  • Vehicle Equipment: for vehicles with check control system, for vehicles with fog lights, for vehicles with original plug coupling for E-set, for vehicles with CAN bus system, for vehicles with parking assist
  • Number of Poles: 13
  • WESTFALIAElectric Kit, towbar
  • Item number303352300113
  • Manufacturer's suggested retail price£ 243,22
  • Our price £ 187,28
  • Condition  New
Details
-23%
Suppression Capacitor 0 290 800 036 buy 24/7!
BOSCH Suppression Capacitor
Article number: 0 290 800 036
£ 9,76
incl. 20% VAT , excl. delivery costs,
  • BOSCHSuppression Capacitor
  • Item number0 290 800 036
  • Manufacturer's suggested retail price£ 12,67
  • Our price £ 9,76
  • Condition  New
Details
-23%
Electric Kit, towbar WUD-05 buy 24/7!
STEINHOF Electric Kit, towbar
Article number: WUD-05
£ 10,15
incl. 20% VAT , excl. delivery costs,
  • Labour [h]: 1
  • Socket f. trailer coupl. (pole arrangem.): 7
  • Voltage [V]: 12
  • Length [m]: 1800
  • Universal: Yes
  • STEINHOFElectric Kit, towbar
  • Item numberWUD-05
  • Manufacturer's suggested retail price£ 13,18
  • Our price £ 10,15
Details
-23%
Electric Kit, towbar WUK-01 buy 24/7!
STEINHOF Electric Kit, towbar
Article number: WUK-01
£ 10,83
incl. 20% VAT , excl. delivery costs,
  • Labour [h]: 1
  • Socket f. trailer coupl. (pole arrangem.): 7
  • Voltage [V]: 12
  • Equipment Variant: 1300
  • Universal: Yes
  • STEINHOFElectric Kit, towbar
  • Item numberWUK-01
  • Manufacturer's suggested retail price£ 14,06
  • Our price £ 10,83
Details
-23%
Electric Kit, towbar GN-7 buy 24/7!
STEINHOF Electric Kit, towbar
Article number: GN-7
£ 5,44
incl. 20% VAT , excl. delivery costs,
  • Number of used contacts: 7
  • Socket f. trailer coupl. (pole arrangem.): 7
  • STEINHOFElectric Kit, towbar
  • Item numberGN-7
  • Manufacturer's suggested retail price£ 7,07
  • Our price £ 5,44
Details
-23%
Electric Kit, towbar 025-048 buy 24/7!
BOSAL-ORIS Electric Kit, towbar
Article number: 025-048
£ 95,83
incl. 20% VAT , excl. delivery costs,
  • Socket f. trailer coupl. (pole arrangem.): 7
  • Vehicle Equipment: for vehicles with check control system
  • Trailer Hitch: with parking assist deactivation, E-Set without original plug-in connectors
  • Supplementary Article / Info 2: Activation not required
  • BOSAL-ORISElectric Kit, towbar
  • Item number025-048
  • Manufacturer's suggested retail price£ 124,45
  • Our price £ 95,83
  • Condition  New
Details
-23%
Earth Strap 52287838 buy 24/7!
HERTH+BUSS ELPARTS Earth Strap
Article number: 52287838
£ 4,44
incl. 20% VAT , excl. delivery costs,
  • Fitting Position: Engine
  • Supplementary Article / Info 2: with tin coating
  • Cross Section [mm²]: 16
  • Bore Distance [mm]: 300
  • Material: Copper
  • Bore Ø 1 [mm]: 10,5
  • Bore Ø 2 [mm]: 10,5
  • Width [mm]: 19
  • HERTH+BUSS ELPARTSEarth Strap
  • Item number52287838
  • Manufacturer's suggested retail price£ 5,76
  • Our price £ 4,44
  • Condition  New
Details