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GoPro ALCAK-302 Hero 3+ Protective Lens & Door Kit — main product image
GoPro

GoPro ALCAK-302 Hero 3+ Protective Lens & Door Kit

★★★★★5.0 (1 reviews)

Protect your Hero 3+ glass and doors with the original GoPro replacement kit — keep your camera field-ready with clean optics and secure seals after the inevitable bumps.

$34.99*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The GoPro ALCAK-302 is an original manufacturer accessory kit for the Hero 3+ camera, providing replacement components for the parts of the housing most subject to loss and damage in field use. The protective lens — the transparent front element of the Hero 3+ housing — takes the brunt of contact abrasion in mounting systems, and a scratched lens introduces haze, flare, and reduced contrast to every frame recorded. This kit provides a fresh replacement alongside body lens covers, battery doors, and side sealing doors, addressing the most commonly damaged components of the housing assembly in a single purchase. For Hero 3+ owners who shoot in demanding environments — water sports, motorsports, helmet mounts — having replacement doors and a spare lens on hand is standard maintenance practice.

As a genuine GoPro product, the ALCAK-302 components are precision-matched to Hero 3+ housing tolerances. The sealing doors in particular benefit from OEM fit — worn or cracked doors compromise the housing's waterproof integrity, and replacement doors that don't seal flush create the same problem as the damaged originals. The kit is compact enough to store in a camera bag pocket for on-location access. The Hero 3+ is a legacy platform — over a decade old at this point — but it remains in active use among action sports photographers who purchased the hardware during its prime and maintain it rather than upgrade. For those users, the ALCAK-302 is the correct, manufacturer-specified path to restoring housing performance after normal wear and tear.

Specifications

Brand
GoPro
Model
ALCAK-302
Compatible Camera
GoPro Hero 3+ / Hero 3 Plus
Included
Protective Lens, Camera Body Lens Caps, Housing Lens Caps, Battery Doors, Side Sealing Doors
Product Type
GoPro Original Accessory Kit

Pros & Cons

👍 Pros

  • Replacing a scratched protective lens with this kit restores housing optical clarity on a Hero 3+ that would otherwise produce degraded footage with haze or flare artifacts from a damaged front element.
  • As a genuine GoPro original accessory, the component tolerances and seal integrity are matched to the Hero 3+ housing specifications — fit is precise in ways third-party alternatives often miss.
  • The kit covers multiple failure points in one purchase — lens, body caps, sealing doors, and battery doors — reducing the need for multiple separate replacement orders after damage.
  • Replacement sealing doors are critical for maintaining waterproof performance; having them on hand before a water-based shoot provides insurance against a compromised housing.
  • Compact kit format means components can be stored in a camera bag as on-location spares without adding meaningful bulk.

👎 Cons

  • The ALCAK-302 is specific to the Hero 3+ — it offers no compatibility benefit for GoPro users who have upgraded to more current Hero models, limiting its long-term kit value as the Hero 3+ platform ages.
  • The Hero 3+ is a legacy product, and buyers should be aware that availability of this original GoPro kit may become inconsistent as GoPro's support for older hardware wind down.
  • Individual components within the kit cannot be purchased separately — if only a single door replacement is needed, the kit format means paying for components that are currently undamaged.
  • No carrying case or component labeling is included, making it easy to misplace the smaller caps and covers in a gear bag environment.
  • The kit does not include the lens housing o-ring seal, which is a separate wear component critical to waterproofing — a comprehensive housing maintenance kit may require additional sourcing.

Frequently Asked Questions

The ALCAK-302 kit includes a protective lens for the Hero 3+ housing along with multiple covers, sealing doors, and battery and side door replacements. It covers the most commonly lost or damaged components of the Hero 3+ housing assembly in a single kit.
The ALCAK-302 is designed specifically for the GoPro Hero 3+ (Hero 3 Plus). While the Hero 3 and Hero 3+ share a similar housing form factor, GoPro lists the kit as Hero 3+ / Hero 3 Plus compatible — buyers with an original Hero 3 should verify fit carefully, as component tolerances between generations can affect seal quality.
Yes — the purpose of the replacement protective lens is exactly this. The housing's front lens element is the first point of contact for impact and abrasion, and replacing a scratched lens with a fresh one restores optical clarity for the front of the housing. It does not replace the camera's actual glass optic but covers the housing lens that protects it.
The kit includes sealing doors, which are part of the housing's waterproof closure system on the Hero 3+. Replacing worn or damaged sealing doors is essential for maintaining the housing's water resistance rating — cracked or deformed doors compromise the seal.
This is described as a GoPro original accessory kit — it is a genuine GoPro product, not a third-party alternative. For housing components where fit precision and seal integrity matter, original manufacturer parts are preferable to generic alternatives.

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