Dayco 5070640 serpentine belt for the 2022-2025 BMW M8 and other vehicles carries power from the crankshaft pulley to the engine-driven accessories on the main drive. The belt follows one path around the pulleys, so one belt turns several accessories at once.
- EPDM construction, aramid reinforced
- K-Section belt cross section
- Straight rib profile with standard rib depth
- Made to the SAE J1459 and SAE J2432 standards
- Operating temperature range of -42.7 C to 100 C (-45 F to 212 F)
Quick facts
- Part: Dayco 5070640 serpentine belt
- Fits: 2022-2025 BMW M8 and other vehicles
- Position: Main drive
- Material: EPDM, aramid reinforced
Squealing at startup, cracked ribs or a glazed rib face can mean the serpentine belt is worn, though a weak belt tensioner or a worn idler pulley can be behind them too, so find the cause first.
Fits
This belt is listed for a wide range of BMW and Rolls-Royce models, and it is a direct-fit replacement for the 2022-2025 BMW M8, the 2020-2025 BMW M8 Gran Coupe and the 2018-2023 BMW M5. The 2018-2023 BMW M5 takes one belt. If your car isn't named here, look it up in the "Vehicles it fits" section to see whether this belt fits it.
Specifications
Fit and size
- Position: Main drive
- Quantity per vehicle: 1
- Cross section: K-Section
- Rib depth: Standard
Build and materials
- Rib profile: Straight Rib
- Material: EPDM, aramid reinforced
- Standards: SAE J1459, SAE J2432
- Operating temperature: -42.7 C to 100 C (-45 F to 212 F)
Interchange: 25-070640 · 25-070640HD
7K640 · 7PK1625 · 7PK1630 · K070640 · K070640HD · 4070640 · PK070640 · 640K7
This part cross-references / interchanges with the following part numbers:
7K640, 7PK1625, 7PK1630, K070640, K070640HD, 4070640, PK070640, 640K7, 25-070640, 25-070640HD, 11.28.1.437.729, 11 28 1 437 729, 11 28 1 742 475, 11 28 7 519 955, 11.28.7.565.360, 11 28 7 565 360, 11.28.7.631.823, 11 28 7 631 823, 11.28.7.636.369, 11 28 7 636 369, 11.28.7.833.264, 11 28 7 833 264, D1102-7353, 15681040
Frequently Asked Questions
Is the 5070640 belt a direct fit for the 2018-2023 BMW M5?
Yes. The Dayco 5070640 serpentine belt is a direct-fit replacement for the 2018-2023 BMW M5, which takes one belt on the main drive.
Is this a K-Section belt with straight ribs?
Yes. This serpentine belt has a K-Section cross section, a straight rib profile and standard rib depth.
What temperatures is this Dayco drive belt rated for?
The Dayco 5070640 is rated to operate from -42.7 C to 100 C, which is -45 F to 212 F.
What material and standards apply to this serpentine belt?
This serpentine belt is EPDM, aramid reinforced, and it is made to the SAE J1459 and SAE J2432 standards.
Does this serpentine belt replace 7PK1625?
Yes. 7PK1625 is listed as an interchange number for this serpentine belt, along with numbers such as K070640 and 25-070640.
