What role do Relay Boxes play in the operation of electrical accessories on Mazda 6?

The vehicle has several electrical accessories which use relays to pass the electrical signal to the component like the fuel injection system, horns, starter and fog lamps. Relays are used to open and close a high current circuit (the power circuit) using a low current circuit (the control circuit). In the case of faulty relay, the part will not work correctly. A majority of the relays are located in the engine compartment and interior fuse relays.

Genuine Mazda 6 Relay Boxes

Relay Block

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9 Relay Boxes found

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Mazda 6 Fuse & Relay Box Part Number: GR6H-67-010H
$1030.19 MSRP: $1407.64
You Save: $377.45 (27%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Harness, Front
- Replaces: GR6H-67-010G, GR6H-67-010C, GR6H-67-010B, GR6H-67-010F, GR6H-67-010D, GR6H-67-010A, GR6H-67-010, GR6H-67-010E
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2003-2008 Mazda 6 | S | 6 Cyl 3.0 L GAS
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Mazda 6 Fuse & Relay Box Part Number: GHP9-66-730
$16.16 MSRP: $21.55
You Save: $5.39 (26%)
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Product Specifications
- Other Name: Block, Fuse
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2014-2021 Mazda 6 | Carbon Edition, Grand Touring, Grand Touring Reserve, Signature, Sport, Touring | 4 Cyl 2.5 L GAS
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Mazda 6 Fuse & Relay Box Part Number: GS1D-66-730
$15.45 MSRP: $20.60
You Save: $5.15 (25%)
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Product Specifications
- Other Name: Block, Fuse
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2009-2013 Mazda 6 | i, S | 4 Cyl 2.5 L GAS, 6 Cyl 3.7 L GAS
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Mazda 6 Fuse & Relay Box Part Number: GHP9-66-760
$145.11 MSRP: $193.52
You Save: $48.41 (26%)
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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:
- 2014-2016 Mazda 6 | Grand Touring, Sport, Touring | 4 Cyl 2.5 L GAS
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Mazda 6 Fuse & Relay Box Part Number: TK48-66-760
$174.36 MSRP: $232.53
You Save: $58.17 (26%)
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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:
- 2017-2021 Mazda 6 | Carbon Edition, Grand Touring, Grand Touring Reserve, Signature, Sport, Touring | 4 Cyl 2.5 L GAS
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Mazda 6 Fuse & Relay Box Part Number: GP9A-66-760A
$217.53 MSRP: $290.09
You Save: $72.56 (26%)
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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:
- 2006-2007 Mazda 6 | Mazdaspeed | 4 Cyl 2.3 L GAS
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Mazda 6 Fuse & Relay Box Part Number: GP9B-66-730A
$4.32 MSRP: $5.67
You Save: $1.35 (24%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Block, Fuse
- Replaces: GP9B-66-730
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2006-2008 Mazda 6 | i, Mazdaspeed, S | 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
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Mazda 6 Fuse & Relay Box Part Number: GEG1-66-760
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 6 | i, S | 4 Cyl 2.5 L GAS, 6 Cyl 3.7 L GAS
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Mazda 6 Fuse & Relay Box Part Number: GS3L-66-760B
Product Specifications
- Other Name: Block, Main Fuse
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2009-2010 Mazda 6 | i, S | 4 Cyl 2.5 L GAS, 6 Cyl 3.7 L GAS

Mazda 6 Relay Boxes

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Mazda 6 Relay Boxes Parts and Q&A

Fuse & Relay Box
GP9B-66-730A
Q: What role do Relay Boxes play in the operation of electrical accessories on Mazda 6?
A:
The vehicle has several electrical accessories which use relays to pass the electrical signal to the component like the fuel injection system, horns, starter and fog lamps. Relays are used to open and close a high current circuit (the power circuit) using a low current circuit (the control circuit). In the case of faulty relay, the part will not work correctly. A majority of the relays are located in the engine compartment and interior fuse relays.