WhichTractor
  • Rigid chassis
  • WhichTractor size: Compact
  • No lab test on file
  • 1968–1969

It was ranked on an engine power figure whose source does not say gross or net. WhichTractor size, not the maker’s category

Derived by WhichTractor from a sourced three-point linkage. How we decide what a machine is

Nuffield 4/25 (425) specs: hp, weight, years

BMC B 15 T four-cylinder. The manufacturer claimed 24.9 horsepower. No laboratory has tested one, so there is no measured figure at the shaft.

Engine power, claimed · gross or net not stated

24.9 hp

18.6 kW as stated by the source

No lab test on file

Claimed · standard not stated by the source

Source · Traktorenlexikon, “Nuffield 4/25 (1968-1969)”, claimed

This is the maker’s own figure, measured at the engine. Power at the PTO is lower — by how much, for this machine, nobody has measured.

Weight
2,220–2,328 lb
3-point lift
1,001 lb
Hyd. flow
3.8 gpm
Top speed
15.5 mph

Nuffield 4/25 (425) specs: key facts

  • The Nuffield 4/25 (425) was built from 1968 to 1969.

  • The Nuffield 4/25 (425) has a claimed engine power (gross or net not stated) of 18.6 kW (24.9 hp); it has no measured PTO figure.

  • The Nuffield 4/25 (425) is two-wheel drive (2WD).

  • The Nuffield 4/25 (425) has a BMC B 15 T engine, a 4-cylinder unit.

  • The Nuffield 4/25 (425) weighs 1,007–1,056 kg (2,220–2,328 lb) unladen.

  • The Nuffield 4/25 (425) has a rear PTO running at 540 rpm.

  • The three-point hitch of the Nuffield 4/25 (425) lifts 454 kg (1,001 lb) at the lower-link ends.

  • The hydraulic pump of the Nuffield 4/25 (425) delivers 14.5 L/min (3.8 gpm).

Source · Traktorenlexikon, “Nuffield 4/25 (1968-1969)”

How does the 4/25 (425) compare with its class?

  • Limitation:

    A three-point lift at the lower links of 454 kg is low for its class — 43% below the median of 800 kg across the 35 machines within 10% of its power that hold this figure.

  • Limitation:

    A maximum engine torque of 69 N·m is low for its class — 26% below the median of 93.2 N·m across the 50 machines within 10% of its power that hold this figure.

  • Worth knowing:

    An unladen mass of 1,007 kg is low for its class — 33% below the median of 1,503 kg across the 104 machines within 10% of its power that hold this figure.

Derived by WhichTractor from 104 comparable records. How we work this out

Illustration of the 1968–1969 Nuffield 4/25 (425), a 25 hp farm tractor, colour not recorded — shown unpainted, a drawing generated from its specification record
Illustration — not a photograph · colour not recorded — shown unpainted

How much horsepower does a 4/25 (425) have?

The only figure for the 4/25 (425) is 24.9 hp (18.6 kW) of claimed engine power, gross or net not stated, no test standard stated — not power at the shaft.

Engine, claimed (gross/net not stated)
24.9 hp

Source · Traktorenlexikon, “Nuffield 4/25 (1968-1969)”

What engine is in a 4/25 (425)?

A 4/25 (425) has a BMC B 15 T, a 4-cylinder engine.

Engine — 4/25 (425) engine specifications
Make & modelBMC B 15 T
Cylinders4, liquid-cooled
Max torque51 lb·ft · 69 N·m @ 1,400 rpm

Source · Traktorenlexikon, “Nuffield 4/25 (1968-1969)”

How much will a 4/25 (425) lift, and what is its hydraulic flow?

A 4/25 (425) lifts 1,001 lb (454 kg) at the lower-link ends of its Category 1 three-point hitch.

Hydraulics & PTO — 4/25 (425) hydraulics and PTO specifications
Pump flow3.8 gpm · 14.5 L/min
Hitch categoryCategory 1
Lift at ends1,001 lb · 454 kg
Rear PTOtransmission-driven, 540 rpm @ 2,258 engine rpm
PTO shaft1 3/8"- 6 splines

Source · Traktorenlexikon, “Nuffield 4/25 (1968-1969)”

What transmission does a 4/25 (425) have?

Transmission specifications for the 4/25 (425) are below.

Transmission — 4/25 (425) transmission specifications
ClutchPedal-operated dry BORG & BECK single-plate clutch
Top speed15.5 mph · 25 km/h

Source · Traktorenlexikon, “Nuffield 4/25 (1968-1969)”

How much does a 4/25 (425) weigh?

A 4/25 (425) weighs 2,220–2,328 lb (1,007–1,056 kg) unladen.

Weights & dimensions — 4/25 (425) weights and dimensions
Unladen weight2,220–2,328 lb · 1,007–1,056 kgthe article lists alternatives
Wheelbase67.0 in · 1,702 mm
Length109.4 in · 2,780 mm
Width60.5 in · 1,537 mm
Height74.5 in · 1,892 mm
Ground clearance12.8 in · 324 mm
Front track44.0–68.0 in · 1,118–1,727 mm
Rear track44.0–72.0 in · 1,118–1,829 mm
Turning radius, braked9.4 ft · 2.87 m

Source · Traktorenlexikon, “Nuffield 4/25 (1968-1969)”

What oil does a 4/25 (425) take, and how much?

A 4/25 (425) engine takes 4.6 qt (4.4 L). Single source, not independently verified — always confirm against the operator’s manual for your machine.

4/25 (425) fluid capacities, grades and service intervals
SystemCapacity
Engine oil4.6 qt · 4.4 LSource: Traktorenlexikon, “Nuffield 4/25 (1968-1969)” · single source, not independently verified
Transmission11.4 qt · 10.8 LSource: Traktorenlexikon, “Nuffield 4/25 (1968-1969)” · single source, not independently verified
Hydraulic9.6 qt · 9.1 LSource: Traktorenlexikon, “Nuffield 4/25 (1968-1969)” · single source, not independently verified
Cooling system5.1 qt · 4.8 LSource: Traktorenlexikon, “Nuffield 4/25 (1968-1969)” · single source, not independently verified

Always confirm against the operator’s manual for your machine before service.

Which tractors compare with a 4/25 (425)?

Within 10% of its 24.9 hp of claimed engine power, the same type, and first built within 15 years of it.

Common questions about the Nuffield 4/25 (425)

Is a 4/25 (425) two-wheel drive or four-wheel drive?

The Nuffield 4/25 (425) is two-wheel drive (2WD).

What PTO does a 4/25 (425) have?

A 4/25 (425) has a 540 rpm rear PTO on a 1 3/8"- 6 splines shaft.

Sources and how this page was built

Compiled from Traktorenlexikon, “Nuffield 4/25 (1968-1969)”.

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. Traktorenlexikon: Nuffield 4/25 (1968-1969) — CC BY-SA 4.0, WIKIBOOKS-TL-116079 · revision 993290. Wikibooks contributors (Traktorenlexikon). Original document