How does the viscous coupling of the fan affect the Drive Belt, and what steps should be taken to check its performance on Mazda RX-7?

There are two ways in which the viscous coupling of the fan can fail: excessive slip might allow the engine not to cool adequately at low speeds, or the drive might seize, causing noise and wasted engine power as the fan turns with the engine irrespective of speed. To ensure the fan works, apply some bright colored tape on one of the blades so that they can be seen as they spin. Install a tachometer to the engine or install the on the dashboard) version, and warm the engine to regular operation temperature. Set the engine speed to 4200 rpm and with stroboscope as advised by manufacturer, measure the fan speed which must be 1400 rpm at this engine speed plus or minus 200 rpm. In case the fan speed fails to comply with these specifications then change the fan drive clutch to a new one and recheck.

Genuine Mazda RX-7 Drive Belt

Serpentine Belt

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8 Drive Belts found

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Mazda RX-7 A.I.R. Pump Belt Part Number: N304-13-715
$13.50 MSRP: $18.01
You Save: $4.51 (26%)
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Product Specifications
- Other Name: V-Belt
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 1986-1988 Mazda RX-7 | 10th Anniversary, Base, Base 2+2, Convertible, GTU, GXL, GXL 2+2, LX, LX 2+2, SE, SE 2+2, Sport, Turbo | 2 Cyl 1.3 L GAS
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Mazda RX-7 Power Steering Belt Part Number: N326-15-908
$2.87 MSRP: $19.48
You Save: $16.61 (86%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Belt'V'; Power Steering Belt
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 1986-1991 Mazda RX-7 | 10th Anniversary, Base, Base 2+2, Convertible, GTU, GTUs, GXL, GXL 2+2, LX, LX 2+2, SE, SE 2+2, Sport, Turbo | 2 Cyl 1.3 L GAS
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Mazda RX-7 Power Steering Belt Part Number: N3A1-15-907
$36.33 MSRP: $48.44
You Save: $12.11 (25%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Belt'V'; Power Steering Belt
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 1993-1995 Mazda RX-7 | Base, R1, R2, Touring | 2 Cyl 1.3 L GAS
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Mazda RX-7 Alternator Belt Part Number: N350-18-381
$12.84 MSRP: $17.12
You Save: $4.28 (25%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: V-Belt
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 1989-1991 Mazda RX-7 | Base, Convertible, GTU, GTUs, GXL, GXL 2+2, Turbo | 2 Cyl 1.3 L GAS
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Mazda RX-7 Power Steering Belt Part Number: N326-15-909
$17.08 MSRP: $22.77
You Save: $5.69 (25%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Belt'V'; Power Steering Belt
- Replaces: N326-15-909-9U
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 1986-1991 Mazda RX-7 | 10th Anniversary, Base, Base 2+2, Convertible, GTU, GTUs, GXL, GXL 2+2, LX, LX 2+2, SE, SE 2+2, Sport, Turbo | 2 Cyl 1.3 L GAS
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Mazda RX-7 Alternator Belt Part Number: N3Z2-18-381
$10.08 MSRP: $13.24
You Save: $3.16 (24%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: V-Belt
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 1993-1995 Mazda RX-7 | Base, R1, R2, Touring | 2 Cyl 1.3 L GAS
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Mazda RX-7 Alternator Belt Part Number: 8311-18-381A-9U
Product Specifications
- Other Name: Belt 'V'
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 1986-1988 Mazda RX-7 | 10th Anniversary, Base, Base 2+2, Convertible, GTU, GXL, GXL 2+2, LX, LX 2+2, SE, SE 2+2, Sport, Turbo | 2 Cyl 1.3 L GAS
View related parts
Mazda RX-7 Alternator Belt Part Number: N3Z1-18-381-9U
Product Specifications
- Other Name: Belt 'V'
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 1993-1995 Mazda RX-7 | Base, R1, R2, Touring | 2 Cyl 1.3 L GAS

Mazda RX-7 Drive Belt

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Mazda RX-7 Drive Belt Parts and Q&A

Alternator Belt
8311-18-381A-9U
Q: How does the viscous coupling of the fan affect the Drive Belt, and what steps should be taken to check its performance on Mazda RX-7?
A:
There are two ways in which the viscous coupling of the fan can fail: excessive slip might allow the engine not to cool adequately at low speeds, or the drive might seize, causing noise and wasted engine power as the fan turns with the engine irrespective of speed. To ensure the fan works, apply some bright colored tape on one of the blades so that they can be seen as they spin. Install a tachometer to the engine or install the on the dashboard) version, and warm the engine to regular operation temperature. Set the engine speed to 4200 rpm and with stroboscope as advised by manufacturer, measure the fan speed which must be 1400 rpm at this engine speed plus or minus 200 rpm. In case the fan speed fails to comply with these specifications then change the fan drive clutch to a new one and recheck.