• WhichTractor size: Standard-size
  • Lab tested ×1
  • 2003–2007

WhichTractor size, not the maker’s category

John Deere 7420 Transmission specs

11 transmission values on record for the 7420.

Measured at the PTO shaft

127.4 hp

Source · OECD Test 2081, measured

What “at the PTO” means, and why it matters

How fast will a 7420 go?

The fastest speed on record for a 7420 is 24.9–31.1 mph (40–50 km/h). The gearbox itself is not on record yet.

Transmission — 7420 Transmission
DriveAvailable in two-wheel and four-wheel drive
Forward gears20Source 1
Reverse gears20Source 1
Transmission as describedMechanical synchronizedSource 1
ClutchPedal-operated, hydraulic wet multi-disc clutchOn record for 1 of 3 configurations
Top speed forward24.9–31.1 mph · 40–50 km/hOn record for 1 of 3 configurationsthe article lists alternatives
Top speed reverse24.9 mph · 40.15 km/hOn record for 1 of 3 configurationshighest reverse speed printed in the article's speed tables
Creeper gears available, optionalYesOn record for 1 of 3 configurations
Service brakesPedal-operated, hydraulic wet disc brake acting on differential side shaftsOn record for 1 of 3 configurations
SteeringHydrostatic John Deere/Danfoss steeringOn record for 1 of 3 configurations
Differential lockElectro-hydraulically operated multi-disc differential lock shiftable under loadOn record for 1 of 3 configurations

Source · Traktorenlexikon, “John Deere 7420”

Sources and how this page was built

11 transmission values from Traktorenlexikon, “John Deere 7420”; and OECD test report 2081, 2003.

Sources checked

14 SEP 2026

Spotted an error?

Sources

Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution

  1. OECD Code 2 test report 2/2 081: John Deere 7420 — Licence not stated by the publisher; facts cited, OECD-2081 · published 2003-09-16 · retrieved 2026-09-14. OECD. Original document
  2. Traktorenlexikon: John Deere 7420 — CC BY-SA 4.0, WIKIBOOKS-TL-106508 · revision 883599. Wikibooks contributors (Traktorenlexikon). Original document