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Dayco 5040430 Serpentine Belt
| Brand | Dayco 5040430 |
|---|---|
| Position | Air Conditioning and Tensioner |
| Color | Black |
| Cross Section | K-Section |
| Effective Length | 43.00 |
| Effective Length | 1092.20 |
| Material | EPDM, Aramid Reinforced |
| Maximum Operating Temperature | 100 |
| Maximum Operating Temperature | 212 |
| Minimum Operating Temperature | -45 |
| Minimum Operating Temperature | -42.7 |
| Outside Circumference | 43.63 |
| Outside Circumference | 1108.21 |
| Rib Depth | Standard |
| Rib Profile | Straight Rib |
| Rib Quantity | 4 |
| Standards | SAE J1459, SAE J2432 |
| Top Width | .54 |
| Fits | Pontiac, Suzuki, Kia, and Toyota · 82 vehicles |
Aramid reinforced. EPDM construction adds strength and durability.
Straight rib profile. Helps maintain smooth, consistent belt contact.
SAE J1459, SAE J2432. Built to meet recognized belt standards.
Cross-references ACDelco 4K430, ACDelco K040430HD and Atlas 4K0430 for the same application. See all 40.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Dayco 5040430 Serpentine Belt Overview
The Dayco 5040430 serpentine belt is a K-section accessory drive belt built with EPDM and aramid reinforcement for consistent operation in demanding engine accessory systems. It is a black, 4-rib belt with a 43.00 in effective length and 43.63 in outside circumference, making it a direct replacement for a range of vehicles with air conditioning and related accessory drive layouts.
Compatible With Audi RS Q8, Audi S8, Audi SQ7, Audi SQ8, Porsche Cayenne, Porsche Panamera, Ram 1500, and other listed applications, this belt is specified for vehicles that rely on precise belt routing and stable accessory drive performance. Part number 5040430 is also referenced by several OE and aftermarket numbers for the same application.
Key Features
- EPDM construction with aramid reinforcement for durable accessory drive service
- 4-rib K-section profile with straight rib design
- Black finish with .54 in top width
- 43.00 in effective length and 43.63 in outside circumference
- Rated for operating temperatures from -45°F to 212°F
- Built to SAE J1459 and SAE J2432 standards
Detailed Product Description
Dayco 5040430 is a serpentine belt for accessory drive systems that require a 4-rib, K-section profile. The EPDM rubber compound helps maintain belt integrity under heat cycling, while aramid reinforcement adds strength for steady power transfer to driven accessories. This belt is listed for air conditioning applications on Audi RS6 Avant, Audi RS7 Sportback, Audi A8 Quattro, Porsche Cayenne, Porsche Panamera, and Audi RS Q8, S8, SQ7, and SQ8, along with additional fitments including Ram 1500 water pump and air conditioning routing.
This part cross-references Gates K040430 and Continental-ContiTech PK040430 for the same application. The Dayco 5040430 is a practical replacement choice when servicing a worn or noisy belt on vehicles such as the Porsche Cayenne or Audi SQ8.
What This Belt Helps Address
- Squealing or chirping from a worn accessory drive belt
- Cracking, glazing, or rib wear on the existing belt
- Loss of belt grip affecting air conditioning operation
- Accessory drive noise caused by age or heat exposure
- Uneven belt tracking in a 4-rib serpentine system
Installation Notes and Tips
Verify belt routing against the vehicle’s accessory drive diagram before installation. Confirm the required length, rib count, and K-section profile match the original belt specification for the exact engine and accessory layout. Inspect pulleys, tensioners, and idlers for wear before installing the new belt, since damaged components can shorten belt life and affect tracking.
For fitment verification, this belt is listed for 2020-2026 Audi RS Q8, S8, SQ7, and SQ8 air conditioning applications; 2019-2026 Porsche Cayenne air conditioning applications; 2025-2026 Porsche Panamera air conditioning applications; 2022-2025 Ram 1500 water pump and air conditioning applications; 2021-2023 Audi RS6 Avant and RS7 Sportback air conditioning applications; and 2019-2021 Audi A8 Quattro air conditioning applications.
Quality Assurance
Dayco manufactures this belt to SAE J1459 and SAE J2432 standards, with temperature capability from -45°F to 212°F for broad underhood operating conditions. The 5040430 part number is supported by OE and aftermarket cross-references, including Gates K040430 and Continental-ContiTech PK040430.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2026 | Audi | RS Q8 | — | — | — | Air Conditioning | — |
| 2026 | Audi | S8 | — | — | — | Air Conditioning | — |
| 2026 | Audi | SQ7 | — | — | — | Air Conditioning | — |
| 2026 | Audi | SQ8 | — | — | — | Air Conditioning | — |
| 2026 | Porsche | Cayenne | 4.0L | V8 | GAS | Air Conditioning | — |
| 2026 | Porsche | Panamera | 4.0L | V8 | GAS | Air Conditioning | — |
| 2025 | Audi | RS Q8 | — | — | — | Air Conditioning | — |
| 2025 | Audi | S8 | — | — | — | Air Conditioning | — |
| 2025 | Audi | SQ7 | — | — | — | Air Conditioning | — |
| 2025 | Audi | SQ8 | — | — | — | Air Conditioning | — |
| 2025 | Porsche | Cayenne | 4.0L | V8 | GAS | Air Conditioning | — |
| 2025 | Porsche | Panamera | 4.0L | V8 | GAS | Air Conditioning | — |
| 2025 | Ram | 1500 | 3.6L | V6 | — | Water Pump and Air Conditioning | — |
| 2024 | Audi | RS Q8 | — | — | — | Air Conditioning | — |
| 2024 | Audi | S8 | — | — | — | Air Conditioning | — |
| 2024 | Audi | SQ7 | — | — | — | Air Conditioning | — |
| 2024 | Audi | SQ8 | — | — | — | Air Conditioning | — |
| 2024 | Porsche | Cayenne | 4.0L | V8 | GAS | Air Conditioning | — |
| 2024 | Ram | 1500 | 3.6L | V6 | — | Water Pump and Air Conditioning | — |
| 2023 | Audi | RS Q8 | — | — | — | Air Conditioning | — |
| 2023 | Audi | RS6 Avant | — | — | — | Air Conditioning | — |
| 2023 | Audi | RS7 Sportback | — | — | — | Air Conditioning | — |
| 2023 | Audi | S8 | — | — | — | Air Conditioning | — |
| 2023 | Audi | SQ7 | — | — | — | Air Conditioning | — |
| 2023 | Audi | SQ8 | — | — | — | Air Conditioning | — |
| 2023 | Porsche | Cayenne | 4.0L | V8 | — | Air Conditioning | — |
| 2023 | Porsche | Panamera | 4.0L | V8 | — | Air Conditioning | — |
| 2023 | Ram | 1500 | 3.6L | V6 | — | Water Pump and Air Conditioning | — |
| 2022 | Audi | RS Q8 | — | — | — | Air Conditioning | — |
| 2022 | Audi | RS6 Avant | — | — | — | Air Conditioning | — |
| 2022 | Audi | RS7 Sportback | — | — | — | Air Conditioning | — |
| 2022 | Audi | S8 | — | — | — | Air Conditioning | — |
| 2022 | Audi | SQ7 | — | — | — | Air Conditioning | — |
| 2022 | Audi | SQ8 | — | — | — | Air Conditioning | — |
| 2022 | Porsche | Cayenne | 4.0L | V8 | — | Air Conditioning | — |
| 2022 | Porsche | Panamera | 4.0L | V8 | — | Air Conditioning | — |
| 2022 | Ram | 1500 | 3.6L | V6 | — | Water Pump and Air Conditioning | — |
| 2021 | Audi | A8 Quattro | 4.0L | V8 | — | Air Conditioning | — |
| 2021 | Audi | RS Q8 | — | — | — | Air Conditioning | — |
| 2021 | Audi | RS6 Avant | — | — | — | Air Conditioning | — |
| 2021 | Audi | RS7 Sportback | — | — | — | Air Conditioning | — |
| 2021 | Audi | S8 | — | — | — | Air Conditioning | — |
| 2021 | Audi | SQ7 | — | — | — | Air Conditioning | — |
| 2021 | Audi | SQ8 | — | — | — | Air Conditioning | — |
| 2021 | Porsche | Cayenne | 4.0L | V8 | — | Air Conditioning | — |
| 2021 | Porsche | Panamera | 4.0L | V8 | — | Air Conditioning | — |
| 2020 | Audi | A8 Quattro | 4.0L | V8 | — | Air Conditioning | — |
| 2020 | Audi | RS Q8 | — | — | — | Air Conditioning | — |
| 2020 | Audi | S8 | — | — | — | Air Conditioning | — |
| 2020 | Audi | SQ7 | — | — | — | Air Conditioning | — |
| 2020 | Audi | SQ8 | — | — | — | Air Conditioning | — |
| 2020 | Porsche | Cayenne | 4.0L | V8 | — | Air Conditioning | — |
| 2020 | Porsche | Panamera | 4.0L | V8 | — | Air Conditioning | — |
| 2019 | Audi | A8 Quattro | 4.0L | V8 | — | Air Conditioning | — |
| 2019 | Porsche | Cayenne | 4.0L | V8 | — | Air Conditioning | — |
| 2019 | Porsche | Panamera | 4.0L | V8 | — | Air Conditioning | — |
| 2018 | Porsche | Panamera | 4.0L | V8 | GAS | Air Conditioning | — |
| 2017 | Porsche | Panamera | 4.0L | V8 | — | Air Conditioning | — |
| 2009 | Pontiac | G8 | 6.0L | V8 | — | Air Conditioning and Tensioner | — |
| 2009 | Pontiac | G8 | 6.2L | V8 | — | Air Conditioning and Tensioner | — |
| 2008 | Pontiac | G8 | 6.0L | V8 | — | Air Conditioning and Tensioner | — |
| 2006 | Pontiac | GTO | — | — | — | Air Conditioning | — |
| 2006 | Suzuki | XL-7 | — | — | — | Power Steering, Air Conditioning and Idler | — |
| 2005 | Pontiac | GTO | — | — | — | Air Conditioning | — |
| 2005 | Suzuki | Grand Vitara | — | — | — | Power Steering, Air Conditioning and Idler | — |
| 2005 | Suzuki | XL-7 | — | — | — | Power Steering, Air Conditioning and Idler | — |
| 2004 | Pontiac | GTO | — | — | — | Air Conditioning | — |
| 2004 | Suzuki | Grand Vitara | — | — | — | Power Steering, Air Conditioning and Idler | — |
| 2004 | Suzuki | XL-7 | — | — | — | Power Steering, Air Conditioning and Idler | — |
| 2003 | Suzuki | Grand Vitara | — | — | — | Power Steering, Air Conditioning and Idler | — |
| 2003 | Suzuki | XL-7 | — | — | — | Power Steering, Air Conditioning and Idler | — |
| 2002 | Suzuki | Grand Vitara | — | — | — | Power Steering, Air Conditioning and Idler | — |
| 2002 | Suzuki | XL-7 | — | — | — | Power Steering, Air Conditioning and Idler | — |
| 2001 | Suzuki | Grand Vitara | 2.7L | V6 | — | Power Steering, Air Conditioning and Idler | — |
| 2001 | Suzuki | Grand Vitara | 2.5L | V6 | — | Power Steering, Air Conditioning and Idler | — |
| 2000 | Kia | Sephia | — | — | — | Air Conditioning and Power Steering | — |
| 2000 | Kia | Spectra | — | — | — | Air Conditioning and Power Steering | — |
| 1993 | Toyota | Paseo | — | — | — | Air Conditioning and Power Steering | — |
| 1993 | Toyota | Tercel | — | — | — | Air Conditioning and Power Steering | — |
| 1992 | Toyota | Paseo | — | — | — | Air Conditioning and Power Steering | — |
| 1992 | Toyota | Tercel | — | — | — | Air Conditioning and Power Steering | — |
| 1991 | Toyota | Tercel | — | — | — | Air Conditioning and Power Steering | — |
| No rows match your filter. | |||||||