Is the MB Quart 4-Circuit Relay Bank compatible with my vehicle?

This product is designed for specific fitment. Please check the part numbers table below or contact our support team at https://cgatvandutvpartsshop.com/contact for a fitment check before ordering.

What is the warranty on this MB Quart product?

MB Quart products are backed by the manufacturer's standard limited warranty against defects in materials and workmanship. For full warranty details, visit https://cgatvandutvpartsshop.com/warranty-policy.

Do you ship internationally?

We currently ship to all 50 US states with fast fulfillment from our warehouses. For international shipping inquiries, contact us at https://cgatvandutvpartsshop.com/contact.

What is your return policy?

We accept returns within 30 days of delivery on unused, uninstalled items in original packaging. See full details at https://cgatvandutvpartsshop.com/returns.

MB Quart 4-Circuit Relay Bank

$165.99

Genuine MB Quart utv & atv parts component. In stock, ships from USA. Part of the UTV & ATV Parts catalog at CG ATV & UTV Parts Shop.

10 in stock

MB Quart 4-Circuit Relay Bank

Name: MB Quart 4-Circuit Relay Bank
SKU: GMR-RB4
Price: 165.99 USD
Availability: InStock

Sold by CG ATV & UTV Parts Shop — authorized distributor of MB Quart powersports parts in the USA.

Product Overview

MB Quart 4-Circuit Relay Bank

The GMR-RB4 is a universal, plug-and-play 4-circuit relay bank designed to seamlessly integrate with the GMR7V1 Source Unit (sold separately). Supporting up to four 20-amp circuits, it allows for easy addition and control of 12V accessories through digital switches. Installation is straightforward with a simple three-wire connection, and built-in LED indicators make it easy to identify blown fuses. Ideal for streamlined power management in any vehicle setup.

Features:

Plug-and-play
For GMR7V1 Source Unit (sold separately)
Four 12V circuits – 80A(max) total / 20A(max) per circuit
JST connector to the female JST connector
Know which fuse is blown via the glowing LED indicator

Part Numbers

Product Style	RevZilla Item #	Store Sku	MFR. Product #	Availability
MB Quart 4-Circuit Relay Bank	10503813		GMR-RB4	In Stock: Ships next business day

Key Specifications

Attribute	Detail
Brand	MB Quart
SKU / MPN	GMR-RB4
Category	UTV & ATV Parts > General Accessories
Condition	New
Availability	In Stock — Ships 1–3 Business Days
Price	USD $165.99

Fitment & Compatibility

Please verify fitment using the part numbers table on this page or contact our team. Compatibility data is updated regularly.

Need help confirming fit? Our technical staff can help at our contact page.

Installation & Use

Installation complexity varies by application. For most bolt-on components, a basic socket set, torque wrench, and the vehicle’s service manual are sufficient. If you need detailed torque specs or wiring diagrams, refer to the manufacturer’s documentation or consult an authorized service center.

OEM-replacement parts should be installed following factory service intervals. Aftermarket performance parts may require additional setup, such as tuning or calibration — always verify compatibility before installation.

Browse our full UTV & ATV Parts catalog for complementary components and upgrade packages.

Safety Standards & Compliance

All products listed on this store are sourced from authorized distributors and meet applicable SAE and ANSI standards where relevant. Electrical components comply with UL requirements for powersports applications. Brake components sold here meet or exceed OEM friction specifications as independently verified by the manufacturer.

For regulatory standards governing off-road vehicle components, refer to the SAE International standards library and the U.S. Consumer Product Safety Commission.

About MB Quart

MB Quart is a recognized name in the powersports industry, with a product line engineered for ATV and UTV riders who demand performance and durability. Their manufacturing processes prioritize tight tolerances, quality materials, and field-tested designs. As an authorized MB Quart retailer, CG ATV & UTV Parts Shop offers genuine products with full warranty coverage.

Related Categories

Frequently Asked Questions

Is the MB Quart 4-Circuit Relay Bank compatible with my vehicle?

This product is designed for specific fitment. Please check the part numbers table below or contact our support team at https://cgatvandutvpartsshop.com/contact for a fitment check before ordering.
What is the warranty on this MB Quart product?

MB Quart products are backed by the manufacturer’s standard limited warranty against defects in materials and workmanship. For full warranty details, visit https://cgatvandutvpartsshop.com/warranty-policy.
Do you ship internationally?

We currently ship to all 50 US states with fast fulfillment from our warehouses. For international shipping inquiries, contact us at https://cgatvandutvpartsshop.com/contact.
What is your return policy?

We accept returns within 30 days of delivery on unused, uninstalled items in original packaging. See full details at https://cgatvandutvpartsshop.com/returns.

MAECENAS IACULIS

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Premium Power Sports Distribution Network

Operating a high-performance trail machine demanding challenging off-road conditions requires complete structural component trust. At CG ATV & UTV Parts Shop, we serve as an authorized US distribution node carrying an expansive engineering repository of genuine replacements and aftermarket upgrades tailored for cross-country riders.

High-Velocity Restoration Hardware

Our warehouse logistics pipelines track component variations matching rigorous vehicle profiles. Riders overhauling steering system geometries can access heavy duty control A-arms & alignment linkages designed to absorb brutal landings. For optimal ride tuning, explore our targeted chassis lift kits or switch standard parts for high-clearance shock absorbers built to maximize operational stability.

Fulfillment handling spans critical maintenance groups. Keep field traction optimized using aggressive-ply all-terrain tires and wheels built to survive sharp trail debris, or upgrade service overhaul setups with specialized sintered brake pads and premium high-flow oil filters to safeguard internal engine layouts.

We streamline off-road hardware access across all 50 states, ensuring out-of-box compatibility via exact diagnostic matching. Every component variant maps back to official structural documentation, letting builders verify vehicle tolerances prior to running remote terrain tracks.

Performance Modifications & Comfort Utilities

Unlocking top-tier torque response on the trail starts with structural exhaust tuning. Our performance catalog houses high-flow exhaust manifolds along with lightweight stainless steel exhaust systems designed to keep internal thermal parameters in check during extended open-throttle sessions.

For ultimate protective enclosures, verify our field accessories division. We ship impact-resistant polycarbonate front windshields and weather-sealed hard roofs alongside extreme-capacity power winches to handle heavy recovery missions. Complete your vehicle build with waterproof LED light bars and high-output bluetooth audio sound bars for superior presence and utility on your next adventure.

MB Quart 4-Circuit Relay Bank

MB Quart 4-Circuit Relay Bank