2021 Ford Bronco Wiper Sizes & Bulb Sizes

Last reviewed October 16, 2026

The short answer

The 2021 Ford Bronco takes 17" driver and 17" passenger wiper blades, and has sealed LED headlights with no replaceable low-beam bulb.

Shop buttons go to Amazon. As an Amazon Associate, FitsYourCar earns from qualifying purchases; it never changes a size we list. How we make money.

Wiper blade sizes

Driver side 17" · OEM WW-1703 Shop on Amazon
Passenger side 17" · OEM WW-1703 Shop on Amazon

Bulb sizes

Low beam Sealed LED, no replaceable bulb
High beam Sealed LED, no replaceable bulb
Fog light Sealed LED, no replaceable bulb
Daytime running Sealed LED, no replaceable bulb
Front turn signal Sealed LED, no replaceable bulb
Reverse light WT21W Search Amazon for WT21W bulbs
Dome / map light Sealed LED, no replaceable bulb

Wheel specs and lug torque

Lug thread M12x1.5 Search Amazon for M12x1.5 lug nuts
Lug nut torque 100 ft-lbs (136 Nm)

Key fob, battery and sensors

Key fob battery CR2450 Search Amazon for CR2450

Roof rack and roof load

Roof load limit 110 lb (50 kg), evenly spread, while driving

Dimensions, weight and fuel

Fuel Gasoline
Octane 91 recommended, 87 allowed
Fuel tank 21.1 gal (80 L)

Worth knowing about the 2021 Bronco

  • Wipers. Both front blades are the same 17-inch Motorcraft WW-1703; the arm connector is not confirmed, so check your arm before buying a non-Motorcraft blade.
  • LED lighting. The low beam, high beam, fog light, daytime running, front turn signal, dome / map light are sealed LED units with no user-replaceable bulb. A failure means replacing the assembly.
  • Bulbs. WT21W reverse bulbs are on low-series rear lamps only; high-series rear lamps, including stop, tail and rear turn, are sealed LED.
  • Torque. Tighten lug nuts to 100 ft-lbs in a star pattern with a torque wrench, and re-check after the first 50 miles. This figure is from the owner's manual; an impact gun will overshoot it.
  • Roof load. The 110 lb roof limit is the dynamic figure for driving and includes the rack itself. It is not a limit for a rooftop tent when parked; the manual gives no static figure.
  • Roof. Load the factory roof rack crossbars only; the limit is 0 lb on vehicles with 315/70R17 tires.
  • Octane. The manual recommends 91 octane for full performance and allows 87. 87 will not harm the engine; the higher grade is a choice, not a requirement.
  • Fuel. The 4-door (long wheelbase) holds 21.1 gal; the 2-door holds 17.4 gal.