Engine

Caterpillar 3126B All years 7.2 253hp (186kW) 895Nm remap

Standard this engine makes 253hp and 895Nm. Our Stage 1 file takes it to 304hp and 1086Nm.

+51horsepower
+191newton metres
1stage available

Where the power arrives

Both curves scaled from the manufacturer figures, on the Stage 1 file.

Power before and after
08216424632801,2001,6002,0002,400 RPM 08216424632801,4002,0002,600hp RPM
  • Standard 253hp
  • Remapped 304hp
Torque before and after
0293586880117301,2001,6002,0002,400 RPM 0293586880117301,4002,0002,600Nm RPM
  • Standard 895Nm
  • Remapped 1086Nm

Stages for this engine

Stage 1 needs nothing fitted. Anything above assumes the supporting hardware is on the car already.

Every figure for the 7.2 253hp (186kW) 895Nm

FilePowerGainTorqueGainPrice
Standard253hpn/a895Nmn/an/a
Stage 1304hpup 511086Nmup 191ask us

Economy files show no new power figure because they are written for torque and drivability rather than peak output.

Remapping the 7.2 253hp (186kW) 895Nm

The Caterpillar 3126B All years 7.2 253hp (186kW) 895Nm runs a factory calibration built to cope with poor fuel, skipped servicing and hot countries. We rewrite the fuelling, boost and timing for this engine on this car, then test it before you get it back. The original file is kept, so it can go back to standard whenever you want.

On the petrol side the difference shows in throttle response and in how hard it pulls through the top half of the rev range. It feels sharper off idle and keeps going where it used to flatten out.

Figures on this page are for a standard car in good health. We read the fault codes and check the basics first, and if something needs attention we will tell you before we write anything. Have a look at the other engines on the All years, the full 3126B range, or everything we do for Caterpillar.

Book your 3126B

We write and test every file at our Aston workshop, on our own rolling road. Ring us with your reg and we will tell you what your car should make before you commit to anything.