2017 Peterbilt 579 Transmission & Axle Gear Ratios Guide
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.
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Transmission gear ratios
The 2017 Peterbilt 579, a popular choice for long-haul and regional trucking, offers a variety of transmission options to suit diverse operational needs. The most common transmissions found in the 2017 Peterbilt 579 include Eaton Fuller's manual and automated manual transmissions (AMT), such as the Advantage series and UltraShift PLUS.
Eaton Fuller Advantage 10-Speed Manual (FRO-15210C)
| Gear | Ratio |
|---|---|
| 1st | 11.02 |
| 2nd | 7.91 |
| 3rd | 5.71 |
| 4th | 4.11 |
| 5th | 2.97 |
| 6th | 2.15 |
| 7th | 1.55 |
| 8th | 1.12 |
| 9th | 1.00 |
| 10th | 0.86 |
| Reverse | 11.02 |
Eaton Fuller UltraShift PLUS 13-Speed AMT (FO-16E313A-VCS)
| Gear | Ratio |
|---|---|
| 1st | 14.40 |
| 2nd | 9.92 |
| 3rd | 7.19 |
| 4th | 5.23 |
| 5th | 3.79 |
| 6th | 2.75 |
| 7th | 2.01 |
| 8th | 1.46 |
| 9th | 1.00 |
| 10th | 0.82 |
| 11th | 0.67 |
| 12th | 0.54 |
| 13th | 0.43 |
| Reverse | 14.40 |
Eaton Fuller UltraShift PLUS 18-Speed AMT (FO-18E318B-MXP)
| Gear | Ratio |
|---|---|
| 1st | 14.40 |
| 2nd | 12.29 |
| 3rd | 10.51 |
| 4th | 8.97 |
| 5th | 7.66 |
| 6th | 6.54 |
| 7th | 5.59 |
| 8th | 4.77 |
| 9th | 4.08 |
| 10th | 3.48 |
| 11th | 2.97 |
| 12th | 2.54 |
| 13th | 2.17 |
| 14th | 1.85 |
| 15th | 1.58 |
| 16th | 1.35 |
| 17th | 1.15 |
| 18th | 1.00 |
| Reverse | 14.40 |
Available axle ratios
The Peterbilt 579 offers a range of axle ratios to optimize for different applications, from fuel-efficient highway cruising to heavy-haul operations. Common axle ratios found in the 2017 Peterbilt 579 often include:
| Ratio | Available With (engine/trim/package) | RPO/Axle Code | Best For |
|---|---|---|---|
| 2.47 | PACCAR MX-13 / Fuel Efficiency Package | DANA Spicer D200 | Fuel Economy |
| 2.64 | PACCAR MX-13 / Cummins X15 / Balanced Performance | MERITOR MT40-14X | Balanced |
| 2.79 | PACCAR MX-13 / Cummins X15 / General Haul | EATON 404S | Balanced |
| 3.08 | Cummins X15 / Heavy Haul / Construction | DANA Spicer D200 | Towing |
| 3.25 | Cummins X15 / Vocational Applications | MERITOR RT-46-160 | Towing |
Note: Specific availability of ratios can depend on the exact engine, transmission, and trim level ordered for the truck. Always consult the vehicle
More specs for the 2017 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.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
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.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2017 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.
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