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    Wiper Blade Sizes

    2021 Subaru Forester Wiper Blade Sizes & Replacement Guide

    AI-generated reference. Always verify torque values, fluid capacities, intervals, and procedures against the manufacturer's service manual or OEM repair information before performing work. Repairius is not liable for damage from acting on this content without verification.

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    Maintaining clear visibility in your 2021 Subaru Forester is crucial for safe driving, whether you're navigating heavy rain, snow, or dusty trails. Knowing the correct wiper blade sizes, attachment styles, and replacement procedures will save you time and ensure your windshield stays crystal clear. Below is your comprehensive wiper blade guide for the 2021 Subaru Forester.

    Quick reference

    For a fast look at what you need before heading to the auto parts store, check the table below. Note that the 2021 Forester uses a specific push-button attachment for the front windshield rather than the traditional J-hook.

    PositionLength (in)Length (mm)AttachmentOEM PN
    Driver26"650 mmPush-buttonCheck with dealer
    Passenger17"425 mmPush-buttonCheck with dealer
    Rear14"350 mmRear-specific (ROC Lock)Check with dealer

    (Note: Always verify the exact OEM part number with your local Subaru dealership, as part numbers can change based on trim levels and specific manufacturing dates.)

    Best aftermarket replacements

    If you prefer to upgrade from the standard factory wiper blades, there are several premium aftermarket options that fit the 2021 Subaru Forester's push-button wiper arms. Here are some of the best choices:

    • Bosch ICON: (Premium Price) These beam-style blades are a favorite for Subarus. They offer superior performance in all weather conditions, especially snow and ice, thanks to their enclosed tension spring.
    • Rain-X Latitude: (Mid-to-High Price) Featuring a water-repelling coating that transfers to your windshield, these beam blades help bead up rain for excellent visibility.
    • Trico Force: (Mid Price) A robust blade designed with a swept-wing spoiler to keep the blade pressed firmly against the glass at highway speeds.
    • Michelin Stealth: (Mid Price) A hybrid blade that combines the flexibility of a beam blade with the structural integrity of a conventional frame.
    • PIAA Si-Tech: (Premium Price) Made with silicone rubber, these wipers last longer than traditional natural rubber and leave a hydrophobic layer on the glass.

    Attachment style

    Unlike older generations that used the ubiquitous J-hook, the 2021 Subaru Forester uses a push-button (top-lock) attachment style for the driver and passenger front wipers. This system is actually incredibly easy to use, but you must ensure any aftermarket wiper blade you purchase includes the correct push-button adapter in the box. The rear wiper uses a specific rear-arm attachment (often called a ROC Lock or snap-in).

    How to install

    Replacing the wiper blades on your Forester takes just a few minutes.

    1. Prepare the wiper arm: Lift the wiper arm off the windshield. (Tip: Place a folded towel on the windshield glass underneath the arm just in case it snaps back down accidentally).
    2. Remove the old blade: Locate the square push-button on the top of the wiper blade connector. Press the button down firmly, and pull the blade straight out and away from the wiper arm.
    3. Prepare the new blade: If using an aftermarket blade, install the correct push-button adapter provided in the packaging.
    4. Install the new blade: Slide the new blade into the wiper arm until you hear a distinct "click," meaning the push-button has locked into place. Give it a gentle tug to ensure it is secure.
    5. Rear Wiper: Lift the rear arm, rotate the blade backwards (away from the arm) until it pops out of the C-shaped clip, and snap the new one in by reversing the motion.

    When to replace

    For optimal safety, you should replace your wiper blades every 6 to 12 months. The sun's UV rays and freezing winter temperatures degrade the rubber over time. You know it's time for a fresh set if you notice:

    • Streaking or smearing across the windshield.
    • Chattering or skipping, where the blade bounces across the glass instead of gliding smoothly.
    • Squeaking noises during operation.
    • Visible cracks or tears on the rubber squeegee itself.

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    More specs for the 2021 Subaru Forester

    Oil Capacity & Filter

    Capacity, weight, filter PN, drain plug torque, change interval.

    Fluid Type Specs

    Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.

    Coolant Capacity & Type

    Total system capacity, OEM coolant spec, flush interval, bleed tips.

    Transmission Fluid & Service

    Trans model, fluid spec, capacity, filter PN, service interval.

    Torque Specifications

    Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.

    Brake Pad & Rotor Specs

    Pad PNs, rotor size, min thickness, caliper torque.

    Tire Size & Pressure

    OEM size, cold psi, bolt pattern, wheel size, TPMS.

    Battery Size & Group

    Group size, CCA, AGM/flooded, dimensions, reset note.

    A/C Refrigerant & Oil

    R-134a or R-1234yf, charge oz, PAG oil spec.

    Bulb Sizes (Headlight, Tail, Fog)

    Headlight, fog, tail, turn, reverse, interior.

    Factory Maintenance Schedule

    Service intervals by mileage, severe-duty notes, known issues.

    Towing Capacity & Payload

    Max tow, payload, GVWR/GCWR, hitch class by trim.

    Fuse Box Diagram & Amperage

    Fuse box locations, layout, amps, and what each fuse controls.

    Serpentine Belt Routing & Length

    Belt routing, length, rib count, OEM + aftermarket PNs.

    Wheel Alignment Specifications

    Camber, caster, toe ranges (front & rear), adjustability notes.

    Paint Color Codes

    All factory colors with paint codes, sticker location, touch-up tips.

    Spark Plug Type & Gap

    Plug PN, gap, torque, interval by engine.

    Transmission & Axle Gear Ratios

    Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.

    Key Fob Programming

    DIY programming steps, FCC ID, fob PN, battery, transponder.

    Same spec — other model years

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