What role do Relay Boxes play in the operation of electrical accessories on Mazda 3?

Several electrical accessories in the vehicle, such as the fuel injection system, horns, starter, and fog lamps, use relays to transmit the electrical signal to the component. Relays operate by using a low-current circuit to open and close a high-current circuit. If a relay is defective, the associated component will not function properly. Most relays are typically mounted in the engine compartment and interior fuse or relay boxes.

Genuine Mazda 3 Relay Boxes

Relay Block

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13 Relay Boxes found

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Mazda 3 Module Part Number: BDTS-67-5L0H
$84.43 MSRP: $112.58
You Save: $28.15 (25%)
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Product Specifications
- Other Name: Unit, Electric Supply-Driver; Module
- Position: Left
- Replaces: BDTS-67-5L0E, BDTS-67-5L0G, BDTS-67-5L0D
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2019-2024 Mazda 3 | 2.0, Base, Preferred, Premium, Select, Select Sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Module Part Number: BDTS-67-5M0H
$110.61 MSRP: $147.51
You Save: $36.90 (26%)
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Product Specifications
- Other Name: Unit, Electric Supply-Passenger; Module
- Position: Right
- Replaces: BDTS-67-5M0G, BDTS-67-5M0E, BDTS-67-5M0D
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2019-2024 Mazda 3 | 2.0, Base, Preferred, Premium, Select, Select Sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Module Part Number: BGBS-67-5Z0
$125.24 MSRP: $167.02
You Save: $41.78 (26%)
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Product Specifications
- Other Name: Electric Supply Unit; Module
- Replaces: DGJ4-67-5Z0
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2022-2024 Mazda 3 | 2.0, Preferred, Premium, Select, Select Sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Fuse & Relay Box Part Number: BBM6-66-760
$122.08 MSRP: $162.80
You Save: $40.72 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Block, Main Fuse
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2011-2013 Mazda 3 | i, Mazdaspeed, S | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Module Part Number: BCKA-67-5M0F
$175.16 MSRP: $233.60
You Save: $58.44 (26%)
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Product Specifications
- Other Name: Unit, Electric Supply-Passenger; Module
- Position: Right
- Replaced by: BCKA-67-5M0G
- Replaces: BCKA-67-5M0C, BCKA-67-5M0D, BCKA-67-5M0E
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2019-2024 Mazda 3 | 2.0, 2.5 Carbon Turbo, 2.5 S, 2.5 Turbo, 2.5 Turbo Premium Plus, Base, Carbon Edition, Preferred, Premium, Select, Select Sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Module Part Number: BCKA-67-5L0G
$176.79 MSRP: $235.76
You Save: $58.97 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Unit, Electric Supply-Driver; Module
- Position: Left
- Replaces: BCKA-67-5L0F, BCKA-67-5L0E, BCKA-67-5L0D, BCKA-67-5L0C
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2019-2024 Mazda 3 | 2.0, 2.5 Carbon Turbo, 2.5 S, 2.5 Turbo, 2.5 Turbo Premium Plus, Base, Carbon Edition, Preferred, Premium, Select, Select Sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Fuse & Relay Box Part Number: B62S-66-760
$197.70 MSRP: $263.65
You Save: $65.95 (26%)
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Product Specifications
- Other Name: Block, Main Fuse; Fuse & Relay Box
- Replaces: BHR1-66-760, BHR1-66-760A
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2014-2018 Mazda 3 | Grand Touring, i Grand Touring, I Sport, i SV, I Touring, s Grand Touring, s Touring, Sport, Touring | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Module Part Number: BDTS-67-5Z0B
$201.44 MSRP: $268.63
You Save: $67.19 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Electric Supply Unit; Module
- Replaces: BDTS-67-5Z0A
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2019-2021 Mazda 3 | 2.0, Base, Preferred, Premium, Select | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Fuse & Relay Box Part Number: BCKA-66-760
$212.98 MSRP: $284.02
You Save: $71.04 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Block, Main Fuse; Fuse & Relay Box
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2019-2024 Mazda 3 | 2.0, 2.5 Carbon Turbo, 2.5 S, 2.5 Turbo, 2.5 Turbo Premium Plus, Base, Carbon Edition, Preferred, Premium, Select, Select Sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Module Part Number: BFVV-67-5Z0
$349.69 MSRP: $466.34
You Save: $116.65 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Electric Supply Unit; Module
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2019-2024 Mazda 3 | 2.0, 2.5 Carbon Turbo, 2.5 S, 2.5 Turbo, 2.5 Turbo Premium Plus, Base, Carbon Edition, Preferred, Premium, Select, Select Sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Fuse & Relay Box Part Number: BP4K-66-760H
$331.80 MSRP: $442.49
You Save: $110.69 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Block, Main Fuse
- Replaces: BP4K-66-760A, BP4K-66-760B, BP4K-66-760G, BP4K-66-760D, BP4K-66-760F, BP4K-66-760C
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2004-2009 Mazda 3 | i, Mazdaspeed, S, SP23 | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS
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Mazda 3 Fuse & Relay Box Part Number: BFD2-66-760
Product Specifications
- Other Name: Block, Main Fuse
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2013 Mazda 3 | i, Mazdaspeed, S | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Fuse & Relay Box Part Number: BBM5-66-760B
Product Specifications
- Other Name: Block, Main Fuse
- Replaces: BBM5-66-760A
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2010 Mazda 3 | i, Mazdaspeed, S | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L GAS

Mazda 3 Relay Boxes

Looking for Relay Boxes with proven quality? Choose OEM Relay Boxes. Mazda designs and builds them to strict factory specs. Every piece goes through rigorous quality checks. You'll get parts that fit right and work like new. Shop our huge inventory of OEM Mazda 3 parts. Enjoy the highly competitive prices online. Our site is your one-stop shop. Each genuine 3 part includes a manufacturer's warranty. Buy with confidence. Our return policy is simple and hassle-free. In a rush? Choose expedited delivery at checkout. You'll love the streamlined experience from search to checkout to receiving your order.

Mazda 3 Relay Boxes Parts and Q&A

Fuse & Relay Box
BBM6-66-760
Q: What role do Relay Boxes play in the operation of electrical accessories on Mazda 3?
A:
Several electrical accessories in the vehicle, such as the fuel injection system, horns, starter, and fog lamps, use relays to transmit the electrical signal to the component. Relays operate by using a low-current circuit to open and close a high-current circuit. If a relay is defective, the associated component will not function properly. Most relays are typically mounted in the engine compartment and interior fuse or relay boxes.