United Pacific 20584: Peterbilt 378/379 fender guards with headlight mount
United Pacific 20584 supplies a pair of highly polished 304 stainless steel fender guards for the listed Peterbilt 378 and 379 applications. This 18-gauge version includes the headlight-mount feature. Mounting hardware is included; some drilling may be required.
Fitment and equipment checks
Listed for 1986–1999 Peterbilt 378 and 1987–2007 Peterbilt 379. Match the actual fender and mounting arrangement. Confirm modified fenders, headlight supports or unlisted years separately.
Specifications and package contents
- Part number: 20584
- Material: Highly polished 304 stainless steel
- Position: Peterbilt 378/379 fender guards with headlight mount
- Mounting: Mounting hardware included; some drilling may be required
- Package quantity: Pair of guards or trim pieces
- Thickness: 18 gauge
- Warranty: 6-month warranty listed by BTS
Installation notes
Trial-fit the guards and compare mounting points before drilling. Check clearance behind the fender and use the supplied hardware in the correct mounting arrangement. Confirm the existing headlight support and alignment before disturbing its fasteners.
What is included
One pair of 20584 stainless fender guards with mounting hardware. The headlight-mount feature does not include complete headlights or wiring.
Questions about United Pacific 20584
Which Peterbilt years are listed for 20584?
The listed applications are 1986–1999 Peterbilt 378 and 1987–2007 Peterbilt 379. Match the actual fender and support arrangement.
What distinguishes this guard design?
Part 20584 has a headlight-mount feature and is specified as 18-gauge 304 stainless steel. Part 20572 is the separate guard design without that named feature.
Is drilling required on every installation?
The manufacturer says some drilling may be required and includes mounting hardware. Inspect the actual mounting points before deciding what drilling is needed.
Does one order include a pair?
Yes. The manufacturer describes the guards as sold in pairs and includes mounting hardware.
Are replacement headlights included?
No. The package contains the stainless guards and mounting hardware. Complete headlights, bulbs and wiring are separate components.
