Gates K120664 serpentine belt for the 2020 Peterbilt 367 6-cylinder 12.9L and other vehicles is one of the Gates ribbed belts that drive the engine's accessory pulleys.
- Gates Micro-V serpentine belt with precision-fit construction
- Special belt construction eliminates belt noise, reduces tension loss and solves problem drive applications
- EPDM rubber construction resists cracking on the rib surface
- 12 ribs, K cross section and polyester cord
Quick facts
- Part: Gates K120664 serpentine belt
- Fits: the 2020 Peterbilt 367 6-cylinder 12.9L and other vehicles
- Position: Fan
- Material: EPDM
- Condition: New
Cracks across the ribs, fraying or a squeal from the belt area can mean the belt is worn. A worn tensioner, a loose pulley or a failing accessory bearing can be behind the same noise, so find which one is at fault before you buy a belt. The engine runs on one belt, and this listing is a single belt.
Fits
It fits the 2020 Peterbilt 367 6-cylinder 12.9L and the 2019 Kenworth T680 6-cylinder 12.9L. Its size, construction and materials match the original equipment, and it meets or exceeds all original equipment manufacturer specifications.
Specifications
Fit and size
- Position: Fan
- Quantity per vehicle: 1
- Top width: 42 mm (1.647 in)
- Outside circumference: 1707 mm (67.2 in)
- Effective length: 1689 mm (66.5 in)
- Rib quantity: 12
- Cross section designation: K
Build and materials
- Type: Automotive V-ribbed belt (standard)
- Material: EPDM
- Cord material: Polyester
- Grade type: OE Performance
- Condition: New
- Country of origin: Mexico
Installation notes
- Replacing the tensioner along with the belt is recommended if the vehicle is equipped with one.
Interchange: 25-120664 · 25-120664HD
12K664 · K120664HD · 5467007 · D841002121689 · D841003121688 · 12PK1686 · 12PK1687 · 12PK1688 · 12PK1689 · 12PK1690 · 12PK1691 · 12PK1692
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
12K664, K120664HD, 5467007, D841002121689, D841003121688, 12PK1686, 12PK1687, 12PK1688, 12PK1689, 12PK1690, 12PK1691, 12PK1692, 25-120664, 25-120664HD
Frequently Asked Questions
Does the Gates K120664 serpentine belt fit the 2019 Kenworth T680 6-cylinder 12.9L?
Yes, Gates K120664 fits the 2019 Kenworth T680 6-cylinder 12.9L. The engine takes one belt.
What are the length and width of this 12-rib serpentine belt?
This belt has an effective length of 1689 mm (66.5 in), an outside circumference of 1707 mm (67.2 in) and a top width of 42 mm (1.647 in).
Is this one of the Gates drive belts made from EPDM rubber?
Yes. Gates K120664 is an EPDM belt with a polyester cord, and the EPDM construction resists cracking on the rib surface.
Which cracks or noises on a worn serpentine belt like this one are worth a closer look?
Visible cracks across the ribs, fraying or a squeal can mean the belt is worn. Look at the belt only with the engine off and cool.
Should the tensioner be replaced along with the K120664 belt?
Yes, replacing the tensioner together with this belt is recommended when the vehicle has one.
