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The GMF4x4 SB-039-BLK is a black powder coated M6 shutter antenna bracket designed for the HSP Series 3. It provides a purpose-built mounting point for an M6-threaded UHF/CB antenna at the shutter location of the HSP Series 3 vehicle or platform.
The "SB" prefix in the SKU denotes shutter bracket the bracket mounts to the vehicle's window shutter or roll-up shutter mechanism, as distinct from GMF4x4's bonnet bracket (BB prefix) or tailgate bracket (TG prefix) products.
Note: The specific vehicle or platform referenced by "HSP Series 3" is not defined in the available supplier data. Confirm which vehicle this designation refers to and verify fitment with GMF4x4 or your supplier before purchasing. Hardware inclusions, weight, and full installation details are also not confirmed. Antenna not included.
| Specification | Detail |
|---|---|
| Brand | GMF4x4 |
| Part number | SB-039-BLK (also listed as 039-BLK-SB) |
| Product type | Shutter antenna bracket |
| Antenna thread | M6 |
| Compatible with | HSP Series 3 — confirm vehicle designation with GMF4x4 |
| Finish | Black powder coat |
| Hardware included | Not specified — confirm with supplier |
| Antenna included | No |
| Weight | Not specified |
Not specified
A shutter bracket (GMF4x4 "SB" prefix) is designed to mount an antenna at the vehicle's window or cargo area shutter — the roll-up or hinged panel used to secure the vehicle's cargo space or side access. This is a different mounting location from a bonnet bracket (GMF4x4 "BB" prefix) or tailgate/boot bracket (GMF4x4 "TG" prefix). Shutter brackets are commonly used on commercial, service, and utility vehicles where other mounting positions are not accessible or practical.
The specific vehicle or platform designated as "HSP Series 3" is not defined in the available supplier data. Confirm with GMF4x4 or your supplier exactly which vehicle this SKU is designed for before purchasing.
M6 refers to the antenna mount thread specification — a 6mm metric thread. This is one of the standard thread sizes used on UHF CB antenna bases. Ensure the UHF antenna you intend to mount uses an M6 male thread base before purchasing. Other common sizes include M5 and ¾-24 UNF — these are not compatible with this bracket without an adaptor.
No — the SB-039-BLK is a mounting bracket only. A compatible M6-thread UHF antenna, antenna cable, and UHF CB radio are required separately.
The "BLK" suffix in this SKU denotes the black powder coat variant. A natural or polished finish version may exist in the GMF4x4 range under a different SKU — confirm available colour options with your supplier.
Servicing the Illawarra and surrounding areas for over 30 years, Frankies Auto Electrics is a multi-award winning service provider and retail outlet, covering all aspects of auto electrical work and in-car entertainment. From sales and installations, electrical diagnostics and fault finding, upgrades and additions, our team of qualified sales people, technicians and installers are on hand to help.
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69 Princes Highway, Albion Park Rail, NSW Australia 2527
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4/142 Princes Highway, South Nowra, NSW Australia 2541
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