S2588 Eaton Fuller Pistol Grip Shift Knob with Pattern – 18 Speed Roadranger | New Genuine OEM

New Genuine Eaton Fuller S2588 — Complete pistol-grip master shift knob and air valve assembly with dual flippers and printed shift pattern, designed for 18-speed Roadranger transmissions.

This is the shift pattern style version (not the plain Fuller logo version). It features a comfortable ergonomic pistol grip with two flippers: a black range selector (Hi/Low) and a gray deep reduction / splitter control. The top has the full 18-speed shift pattern printed for easy driver reference.

In stock and ready to ship from Discount Parts Exchange (DPX) in Mansfield, Ohio.

Call 419-522-3320 for current pricing and availability.

Key Specifications

• Part Number: S2588
• Style: Pistol Grip Master Shift Knob with Printed Shift Pattern (Dual Flipper)
• Range Selector: Black Flipper (Up/Down – Hi/Low Range)
• Deep Reduction / Splitter: Gray Flipper (Forward/Rearward)
• Mounting: 1/2"-13 threaded main port (threads onto shifter lever) + Includes mounting hardware
• Air Fittings: Not included – Bottom ports are 1/16" NPT (Use Fuller 84005 fittings for 5/32" air tubing)
• Warranty: Backed by Eaton Fuller Manufacturer Warranty
• Condition: New Genuine Eaton Fuller OEM – Ships in original packaging

How the S2588 Roadranger Valve Works

The S2588 controls both the range cylinder and splitter for full 18-speed operation. Printed shift pattern on top for quick reference.

Low Range "L" - Splitter Rearward

Black flipper Down + Gray splitter button Rearward.

Low Range "H" - Splitter Forward

Black flipper Down + Gray splitter button Forward.

High Range "L" - Splitter Rearward

Black flipper Up + Gray splitter button Rearward.

High Range "H" - Splitter Forward

Black flipper Up + Gray splitter button Forward.

Applications & Fitment

Designed for Eaton Fuller 18-Speed Roadranger transmissions including:

• RTLO16718B
• RTLO16918B
• RTLO18918B ← Typical 18-Speed Unit
• RTLO20918B
• RTLO22918B

Fits All Major Truck Makes

This S2588 shift knob fits any truck equipped with a compatible Eaton Fuller 18-speed Roadranger transmission.

• Peterbilt
• Kenworth
• Freightliner
• International / Navistar
• Volvo
• Mack
• Western Star
• and many others

Cross References / Interchange

• Velvac: 032406
• Tectran: 1460, TRV6918
• International: 1664797C, SMRA6918
• Automann: 174.6918
• Mack: 25MY57M, 3088-A6918
• Volvo Truck: 3972721
• Tramec Sloan: 401303
• Dorman: 455-5005
• Freightliner: FULA6918
• Newstar: SE648

Related Products

DPX Drivetrain Tools Hub

Free tools built by rebuilders for mechanics and drivers:

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

Shipping / Location

• Ships from our Mansfield, Ohio warehouse (419-522-3320)
• Parcel or LTL options available based on packaging and weight
• Warehouse Bin Location: DPX_OH_BR549_EFR

Heavy-Duty Solutions — Built to Perform. Trusted to Last. Discount Parts Exchange (DPX).