Powerful, Built-In Scene Lighting – Black Housing

Upgrade your vessel with a clean, factory-style finish using the Black Oak Pro Series 4″ Flush Mount Marine Spreader Light – Scene (Black Housing). Designed to integrate seamlessly into hardtops, transoms, and other flat mounting surfaces, this compact, high-output fixture delivers a wide 120° scene beam that fills decks, cockpits, and work areas with smooth, even light. The sleek black housing offers a modern, low-profile look while eliminating bulky external brackets.

Engineered for life on the water, this flush mount spreader is built to withstand salt spray, moisture, vibration, and harsh washdowns. Despite its streamlined design, it produces a powerful 3,120-lumen output using premium LEDs and precision optics for expansive coverage without harsh hotspots. It’s also an excellent option for reverse lighting, providing bright, wide-area visibility in tight quarters after dark. Whether used as a dedicated scene light or a reverse light, it delivers dependable illumination you can trust.

Features

Lifetime Warranty
IP69K Rated Housing – sealed against salt, spray, humidity, and washdowns
Wide 120° Scene Beam – smooth, even deck and cockpit illumination
Premium CREE LED Chips – maximum efficiency and long-term reliability
316 Stainless Steel Mounting Bracket – corrosion-resistant for harsh marine environments
Ceramic-Coated Finish – superior UV and saltwater corrosion protection
Military-Grade Breather – prevents internal moisture build-up and pressure imbalance
Premium Lexan Lens – impact-resistant and will not fade or yellow over time
Low Amp Draw – efficient output without overloading your electrical system
Adjustable Bracket Design – fine-tune the angle for optimal spread and coverage

In the Box

(1) 4" Spreader Light
Pigtail Deutsch Connector - For easy wiring
Stainless Mounting Bracket and Hardware

Wide Scene Coverage

Engineered with a 120° scene beam, this light delivers smooth, even illumination across your entire work area — no harsh hotspots, just usable light where you need it most.

Seamless Flush Mount Design

Designed for a clean, built-in appearance, this flush mount light integrates directly into hardtops, transoms, and other flat surfaces for a sleek, factory-style finish. Its compact footprint allows it to fit into tight mounting areas without sacrificing output, delivering powerful, wide-area illumination while maintaining a streamlined look.

Simple, Secure Installation

Includes mounting hardware and a Deutsch-style connector for fast, reliable installation so you can get up and running with minimal effort.

Built for harsh conditions. Backed for Life.

The Black Oak 4″ Marine Spreader Light is engineered to thrive in harsh sun, salt spray, and demanding offshore conditions. Featuring a rugged, fully sealed housing and premium components, it delivers reliable wide-area illumination night after night — all backed by Black Oak’s Limited Lifetime Warranty. When you need lighting you can trust on the water, this spreader is built to perform for the long haul.

Specs

Power & Performance
Total Wattage	40
Total Amp Draw	2.8
Operating Voltage	10 - 30V DC
Raw Lumens	3,120
Color Temperature	6,000
LED Diode Qty	4
LED Chip	Cree
Beam Pattern	Scene
Beam Angle	120°
Mode	On/Off
Dimmable?	Yes! (Separate dimmer module Required, NOT included)
Durability & Lifespan
Life Expectancy	50,000 Hours
Operating Temp	-40° to 145° F -40° to 62° C
Waterproof Rating	IP69K
Warranty	Limited Lifetime
Guarantee	30 Day Money Back
Wiring & Installation
Cord Lead From Light	16"
Wire Harness Included?	No
Wire Harness Length	N/A
Wire Gauge	16 AWG
Fuse Size	5 Amp
Connector Type	2 Pin Deutsch
Mounting Bolt Size	5/16"
General
Weight	.35 Lbs
SKU	4BFMSL

Size

Pattern

Product Q&A

Frequently Asked Questions:

Q: What is the 4” Bracket Mount Marine Spreader Light designed for?
A: This light is built to provide wide, even scene lighting for decks, cockpits, towers, and work areas. It’s ideal for night fishing, docking, cleaning, and improving overall on-board visibility after dark.

Q: What beam pattern does this spreader light use?
A: The 4” Marine Spreader Light uses a wide scene beam pattern (approximately 120°) designed to evenly illuminate the area around your boat without harsh hotspots. It’s intended for area lighting, not long-distance projection.

Q: Is this light safe for saltwater environments?
A: Yes. This light is engineered specifically for marine applications and built to withstand salt spray, humidity, washdowns, and vibration. Its corrosion-resistant housing and sealed construction make it suitable for both freshwater and saltwater use.

Q: Where can this light be mounted?
A: The adjustable bracket mount allows for flexible installation on T-tops, towers, hardtops, radar arches, transoms, and work boats. The bracket design makes it easy to fine-tune the angle for optimal coverage.

Q: What voltage system is it compatible with?
A: The light operates on anything from 10-30V DC systems and integrates easily with most boat wiring setups.

Q: Is mounting hardware included?
A: Yes. The 4” Bracket Mount Marine Spreader Light includes mounting hardware for secure installation.

Q: Is this light covered under warranty?
A: Most of our marine lighting products are backed by our industry-leading warranty. Please refer to the warranty section on this page for complete coverage details.

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