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Gates 90K-39129B Serpentine Belt Drive Component Kit
| Brand | Gates 90K-39129B |
|---|---|
| Outside Circumference | 2033 |
| Outside Circumference | 80 |
| Belt Top Width | .947 |
| Belt Top Width | 24 |
| Belt 1 Outside Circumference (in) | 80 |
| Belt 1 Outside Circumference (mm) | 2033 |
| Belt 1 Part Number | K070795 |
| Contents | Belt, tensioner, 3 idlers |
| Idler Pulley 1 Part Number | 36305 |
| Idler Pulley 2 Part Number | 36305 |
| Idler Pulley 3 Part Number | 36342 |
| Tensioner Assembly Part Number | 39129 |
| Product line | Accessory Belt Drive Kit |
| Fits | INFINITI and Nissan · 21 vehicles |
Complete serpentine kit. Restores the entire accessory belt drive system in one service.
OE-equivalent belt. Includes a tensioner, idler pulleys, and necessary hardware.
Accessory belt drive kit. Built for accurate installation with instructions and tech tips.
Cross-references Gates 90K-39129B for the same application. See all 1.
Accessory Belt Drive Kit for OE-Style Service
Restore the accessory belt drive system with the Gates Accessory Belt Drive Kit 90K-39129B. This complete serpentine belt drive component kit is built for direct service of the belt path, tensioner, and idler pulleys on select INFINITI and Nissan applications, including the 2014-2015 INFINITI Q50, 2014-2015 INFINITI Q60, and 2009-2015 Nissan 370Z.
Gates 90K-39129B is organized as a matched service kit for the serpentine drive, helping address wear across the belt system instead of replacing only one component. It is a practical choice for drivers searching for a 2014 INFINITI Q50 serpentine belt kit, a 2015 INFINITI Q60 accessory drive kit, or a Nissan 370Z belt tensioner and idler pulley replacement.
Key Features
- Accessory Belt Drive Kit from Gates
- OE-equivalent belt included for the specified application
- Includes tensioner assembly and idler pulleys for complete front-end belt service
- Belt dimensions: 80 in. outside circumference, 24 mm top width
- Belt part number: K070795
- Tensioner assembly part number: 39129
- Idler pulley part numbers: 36305 and 36342
- Direct fit coverage for select INFINITI and Nissan models
Detailed Description
The Gates Accessory Belt Drive Kit 90K-39129B is a serpentine belt drive component kit for servicing the accessory drive system as a unit. The kit includes the belt, tensioner, and idler pulleys specified for the application, which helps maintain proper belt routing and accessory drive operation. For vehicles such as the INFINITI G37, EX37, M37, Q50, and Q60, as well as the Nissan 370Z, this kit supports a complete front-end belt system refresh using matched components.
This part cross-references Gates 90K-39129B for the same application.
What It Helps Address
- Squealing or chirping from a worn serpentine belt
- Belt tracking issues caused by worn idler pulleys
- Loss of belt tension from a fatigued tensioner assembly
- Accessory drive noise from aging front-end components
- Repeat repairs when only the belt is replaced
Installation Notes and Tips
Verify belt routing and component alignment before installation. Gates includes installation instructions and tech tips with this kit to support accurate service of the serpentine drive. Confirm fitment by year, make, and model before ordering, especially for INFINITI Q50, INFINITI Q60, and Nissan 370Z applications.
Quality Assurance
Gates positions this kit as an OE-style service solution for restoring the accessory belt drive system with matched components. The kit is built around the specified belt, tensioner, and idler pulley part numbers for the listed applications.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Notes |
|---|---|---|---|---|---|---|
| 2015 | INFINITI | Q50 | 3.7L | V6 | GAS | {K070795, 39129, 36305, 36305, 36342}; Accessory Belt Drive Kit |
| 2015 | INFINITI | Q60 | 3.7L | V6 | GAS | {K070795, 39129, 36305, 36305, 36342}; Accessory Belt Drive Kit |
| 2015 | Nissan | 370Z | 3.7L | V6 | GAS | {K070795, 39129, 36305, 36305, 36342}; Accessory Belt Drive Kit |
| 2014 | INFINITI | Q50 | 3.7L | V6 | GAS | {K070795, 39129, 36305, 36305, 36342}; Accessory Belt Drive Kit |
| 2014 | INFINITI | Q60 | 3.7L | V6 | GAS | {K070795, 39129, 36305, 36305, 36342}; Accessory Belt Drive Kit |
| 2014 | Nissan | 370Z | 3.7L | V6 | GAS | {K070795, 39129, 36305, 36305, 36342}; Accessory Belt Drive Kit |
| 2013 | INFINITI | EX37 | 3.7L | V6 | GAS | {K070795, 39129, 36305, 36305, 36342}; Accessory Belt Drive Kit |
| 2013 | INFINITI | G37 | 3.7L | V6 | GAS | {K070795, 39129, 36305, 36305, 36342}; Accessory Belt Drive Kit |
| 2013 | INFINITI | M37 | 3.7L | V6 | GAS | {K070795, 39129, 36305, 36305, 36342}; Accessory Belt Drive Kit |
| 2013 | Nissan | 370Z | 3.7L | V6 | GAS | {K070795, 39129, 36305, 36305, 36342}; Accessory Belt Drive Kit |
| 2012 | INFINITI | G37 | 3.7L | V6 | GAS | {K070795, 39129, 36305, 36305, 36342}; Accessory Belt Drive Kit |
| 2012 | INFINITI | M37 | 3.7L | V6 | GAS | {K070795, 39129, 36305, 36305, 36342}; Accessory Belt Drive Kit |
| 2012 | Nissan | 370Z | 3.7L | V6 | GAS | {K070795, 39129, 36305, 36305, 36342}; Accessory Belt Drive Kit |
| 2011 | INFINITI | G37 | 3.7L | V6 | GAS | {K070795, 39129, 36305, 36305, 36342}; Accessory Belt Drive Kit |
| 2011 | INFINITI | M37 | 3.7L | V6 | GAS | {K070795, 39129, 36305, 36305, 36342}; Accessory Belt Drive Kit |
| 2011 | Nissan | 370Z | 3.7L | V6 | GAS | {K070795, 39129, 36305, 36305, 36342}; Accessory Belt Drive Kit |
| 2010 | INFINITI | G37 | 3.7L | V6 | GAS | {K070795, 39129, 36305, 36305, 36342}; Accessory Belt Drive Kit |
| 2010 | Nissan | 370Z | 3.7L | V6 | GAS | {K070795, 39129, 36305, 36305, 36342}; Accessory Belt Drive Kit |
| 2009 | INFINITI | G37 | 3.7L | V6 | GAS | {K070795, 39129, 36305, 36305, 36342}; Accessory Belt Drive Kit |
| 2009 | Nissan | 370Z | 3.7L | V6 | GAS | {K070795, 39129, 36305, 36305, 36342}; Accessory Belt Drive Kit |
| 2008 | INFINITI | G37 | 3.7L | V6 | GAS | {K070795, 39129, 36305, 36305, 36342}; Accessory Belt Drive Kit |
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