2016 Peterbilt 579 Serpentine Belt Length & Routing
AI-generated reference. Always verify torque values, fluid capacities, intervals, and procedures against the manufacturer's service manual or OEM repair information before performing work. Repairius is not liable for damage from acting on this content without verification.
Working on this 2016 Peterbilt 579? Run just this one job through Repairius.
No big switch. Write the estimate, text it for approval, and get paid on your phone. Keep everything else the way it is.
14-day free trial · credit card required · cancel anytime
Quick Answer
- Belt Length: 2311mm (91 inches)
- Rib Count: 8-rib
- OEM Belt Part Number: Peterbilt 08-03610
- Aftermarket Cross-References: Gates K080910, Dayco 5080910, Continental 4080910
- Auto-Tensioner Part Number: Peterbilt 08-03600, Gates 38515
- Idler Pulley Part Number: Peterbilt 08-03601, Gates 36279
Belt Routing
Before you remove the old belt, we strongly recommend taking a clear photograph of the belt's path for reference. The routing for the 2016 Peterbilt 579 with the PACCAR MX-13 engine is as follows:
- The belt starts at the crankshaft pulley at the bottom center.
- From the crankshaft, the belt moves up and to the left to wrap around the A/C compressor.
- Next, it goes down and around the idler pulley.
- From the idler pulley, the belt travels up to the alternator.
- Then, it moves across to the power steering pump.
- From the power steering pump, it goes down to the water pump.
- Finally, the belt goes up and over the auto-tensioner before returning to the crankshaft pulley.
How to Replace the Serpentine Belt
To replace the serpentine belt on your Peterbilt 579, you will need a serpentine belt tool or a 3/8" breaker bar. Insert the tool into the square hole on the auto-tensioner and rotate it to release the tension on the belt. While holding the tensioner, carefully slip the belt off one of the pulleys. Once the old belt is removed, use your routing photograph or the diagram in this article to install the new belt, ensuring it is correctly seated on all pulleys. Slowly release the tensioner to apply pressure to the new belt.
Replacement Interval
For a 2016 Peterbilt 579, it is recommended to inspect the serpentine belt at every service interval and replace it every 30,000 to 60,000 miles, or as needed based on its condition. High-mileage or severe-duty vehicles may require more frequent replacement.
Signs of a Failing Belt or Tensioner
Be on the lookout for these signs that your serpentine belt or tensioner may need replacement:
- Squealing or Chirping Noises: This is often the first sign of a worn or misaligned belt.
- Visible Wear: Look for cracks, fraying, glazing, or missing ribs on the belt.
- Tensioner Pulley Misalignment: If the tensioner pulley is not aligned with the other pulleys, it can cause premature belt wear.
- Loss of Tension: A weak tensioner will not hold the belt tight, leading to slipping and reduced performance of belt-driven accessories.
Find a trusted shop on Repairius.
More specs for the 2016 Peterbilt 579
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2016 Peterbilt 579 Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
Browse by make
Running an auto or diesel repair shop?
Compare Repairius to the shop software you're paying for
$99.99/month (first location included), unlimited users, 14-day free trial.