RTLO18913A Transmission | Eaton Fuller Roadranger | 13-Speed Double Overdrive 0.86 & 0.73 | 1850 lb-ft | Core Exchange | Reman

RTLO-18913A | Eaton Fuller 13-Speed Roadranger Transmission — Remanufactured by DPX (Double Overdrive)

The Eaton Fuller RTLO-18913A (also known as RTLOF18913A) is the current updated version of the 16913 series. It is a heavy-duty Low Inertia 13-speed with double overdrive (0.86 & 0.73) and 2 reverse ranges. Remanufactured in Mansfield, Ohio by Discount Parts Exchange - DPX. Every unit is completely torn down, cleaned, inspected, and rebuilt with new Fuller synchros, bearings, and seals for maximum reliability in over-the-road and line-haul applications.

Call DPX to confirm: 419-522-3320.

Highlights

• Model: RTLO-18913A / RTLOF-18913A (updated 18913 series – replaces all 16913 series units)
• Gears: 13 forward / 2 reverse
• Final Overdrive: 0.73 (double OD: 0.86 and 0.73)
• Torque Rating: 1,850 lb-ft
• Dry Weight: ~716 lb
• Length: 33.1 in (841 mm)
• Internal Oil Pump: Yes
• Shift System: Manual main + air range & splitter
• Common Applications: Kenworth, Peterbilt, Volvo, Mack, Freightliner, International, Western Star, and other heavy-duty Class 8 trucks

Low Inertia Design Advantage

With the Eaton RT-13, drivers will experience versatility and low shift effort in these premium 13-speed transmissions. The innovative, patented design features a simple mainshaft, which is not splined to the auxiliary gear. This unique design eliminates the added mass, drag and inertia of the entire auxiliary section.

During upshifts, where both the lever and splitter button are moved together, the low-inertia mainshaft is quickly brought to synchronous, resulting in fast, easy shifts.

Gear Ratios — Forward (RTLO-18913A)

Gear Ratios — Reverse (RTLO-18913A)

Overall ratio coverage: 19.7:1

Shift Pattern – RTLO-18913A 13-Speed

Official Eaton Fuller 13-Speed Shift Pattern: Plate 4300764

Key Operating Notes:

• Pre-select range shifts — move range selector before moving the main shift lever
• Do not move range selector while splitter is in High (H)
• Use the splitter button on the shift knob for half-steps (especially useful in 5-8)
• WARNING: Always put transmission in neutral before starting the engine

What’s Included

• Remanufactured Eaton Fuller RTLO-18913A transmission (updated 18913 series) rebuilt to factory spec by Discount Parts Exchange - DPX
• 12-month, unlimited-mileage parts-only warranty
• Tech support from DPX during installation and break-in

Related Products

Recommended Lubricant

Use Eaton PS-386 approved synthetic SAE 50 manual transmission fluid (e.g., Roadranger SAE 50). Do not use engine oil.

Core Exchange Policy

• Sold on exchange: Returned core must be like-for-like, complete, and rebuildable
• Deductions may apply for: Cracked housings, missing/burnt internals, low-lube or water damage, or non-matching cores

Shipping

• Ships via LTL motor freight to verified commercial addresses only
• Forklift or dock required (liftgate available upon request)
• No residential delivery

Image Disclaimer

Photos shown are representative; final appearance may vary by ratio and casting revision.

Call to Order

Call Discount Parts Exchange - DPX for pricing and availability: 419-522-3320

DPX Drivetrain Tools Hub

Free tools built by rebuilders for mechanics, drivers, and fleets:

Road Speed Calculator • Gear Ratio Charts • PTO Shimming Guide • Full IPL Library →

Reference Documentation

For detailed exploded-view diagrams and part numbers, download the official Eaton® Fuller RTLO-18913A Transmission Illustrated Parts List.
📄 Download Eaton Fuller RTLO-18913A Transmission Illustrated Parts List (PDF)

DPX — Ohio’s Premier Heavy-Duty Drivetrain Rebuilder | Built to Perform. Trusted to Last.