Rockford Fosgate RFFAGU Inline AGU Fuse Holder
Click to open expanded view
ROCKFORD FOSGATE logo

Rockford Fosgate RFFAGU Inline AGU Fuse Holder

SKU: RFFAGU
Sale price
$16.15
Regular price
$19
You save
15%
Buy now, pay later
  • image
  • image
  • image

Shipping information

We offer fast and reliable shipping options to ensure that your order arrives in a timely manner. Our dedicated team works diligently to process and ship your items as quickly as possible.

Here are some key points to note about our shipping policy:

Standard Shipping

  • Frankies offers a $15.95 flat rate for Australia-wide shipping, no matter how many items you order. Some larger or heavier items may incur an additional fee, which will be communicated to you when your order is processed.
  • While we endeavour to dispatch all orders promptly, please be advised that due to the current national fuel shortages in Australia and the resulting pressure on logistics networks, order processing and dispatch may take up to 7 business days. We are not liable for delays caused by third-party freight carriers or fuel-related logistical disruptions. By placing an order, you acknowledge that delivery timeframes may be extended beyond our standard estimates during this period.

Estimated delivery times:

  • WA, NT, and TAS: currently experiencing longer shipping times
  • Holiday periods (e.g. Christmas): deliveries may be delayed due to increased freight volumes

Express Shipping

  • Express shipping is available and calculated based on your delivery location, as well as the size and weight of your order. To receive an accurate quote, please contact our Albion Park Rail store and request an "express shipping quote." Our team will promptly assist with pricing and availability. Payment for express shipping can be securely arranged over the phone.

Share this product

Share Post Pin E-mail

Product features

Waterproof AGU Inline Fuse Holder 4 AWG or 8 AWG, Custom Tooled Solid Brass, HPP Platinum Finish, Superior Corrosion Resistance.

Product Overview

The Rockford Fosgate RFFAGU is a waterproof inline AGU fuse holder accepting 4 AWG or 8 AWG wire custom-tooled solid brass with HPP (High Performance Plating) platinum finish. The waterproof construction protects the fuse and contacts from moisture ingress appropriate for under-bonnet, boot, or other locations where water exposure is possible. Suitable for protecting individual amplifier power runs on 4 AWG or 8 AWG positive cables.

Key Specifications

  • Part number: RFFAGU
  • Fuse type: AGU (glass tube)
  • Wire gauges accepted: 4 AWG or 8 AWG ✓
  • Waterproof: Yes ✓
  • Construction: Custom tooled solid brass ✓
  • Plating: HPP (High Performance Plating) — platinum finish ✓
  • Corrosion resistance: Superior (HPP confirmed) ✓
  • Compatible fuse amperage: Not specified — confirm with Rockford Fosgate
  • Fuse included: Not specified — confirm with Rockford Fosgate
  • Pack quantity: Not specified — confirm with Rockford Fosgate (likely single unit)
  • Length: Not specified
  • Warranty: Not specified — confirm with Rockford Fosgate

Features & Benefits

  • Waterproof Construction — The RFFAGU is explicitly described as waterproof — protecting the AGU fuse and brass contacts from water ingress in under-bonnet, boot-entry, or exposed routing positions.
  • 4 AWG or 8 AWG Wire Compatibility — Accepts either 4 AWG or 8 AWG cable, covering the common gauges used for individual amplifier power runs and accessory wiring.
  • Custom Tooled Solid Brass — Machined brass body for precise tolerances, high current capacity, and secure fuse seating.
  • HPP Platinum Plating — Corrosion-resistant coating maintaining low contact resistance at the fuse terminals over time — important for a holder exposed to moisture and temperature cycling.
  • AGU Fuse Compatibility — Accepts standard AGU-style glass-tube fuses available in multiple amperage ratings — select the correct rating for the wire gauge and equipment being protected.

Technical Specs

Specification Detail
Brand Rockford Fosgate
Part Number RFFAGU
Fuse Type AGU (Glass Tube)
Wire Gauge 4 AWG or 8 AWG ✓
Waterproof Yes ✓
Construction Custom Tooled Solid Brass ✓
Plating HPP Platinum ✓
Fuse Amperage Range Not specified
Fuse Included Not confirmed
Pack Quantity Not confirmed
Length Not specified
Warranty Not specified

Compatible With / Goes Well With

Suitable for:

  • Inline fuse protection on 4 AWG or 8 AWG positive power runs
  • Under-bonnet or boot-entry cable routing where moisture exposure is possible
  • Individual amplifier power branch protection

Pairs well with:

  • Compatible AGU fuses at the appropriate amperage for the connected equipment
  • Rockford Fosgate RFD4 distribution block (4 AWG or 8 AWG output branches)
  • Rockford Fosgate 4 AWG or 8 AWG wire

Frequently Asked Questions

What is a waterproof AGU fuse holder used for?

An inline AGU fuse holder provides overcurrent protection on a power cable run — if the cable shorts or exceeds the fuse's rated current, the fuse blows to prevent fire or cable damage. The waterproof construction of the RFFAGU allows it to be installed in locations exposed to moisture, such as near the firewall, under the boot floor, or in external cable runs.

What wire gauges does the RFFAGU accept?

4 AWG and 8 AWG — confirmed in the product description. Do not use with 1/0 AWG wire; the RFFDAGU distribution block or a larger dedicated fuse holder is required for 1/0 AWG runs.

Does the RFFAGU include an AGU fuse?

Not confirmed in the supplier data. Confirm from the official Rockford Fosgate RFFAGU product page before purchasing.

What amperage AGU fuse should I use?

The fuse rating should be appropriate to the maximum current draw of the connected equipment and must not exceed the current capacity of the wire gauge used. Confirm the correct rating with Rockford Fosgate or your installer.

Where should the fuse holder be installed?

Within approximately 450mm (18") of the power source terminal (battery positive or distribution block output terminal) on the positive power run to the amplifier or accessory.