Parts, prices and upgrades
Every Diesel n' Steel engine, transmission, brake, tire, battery and fluid with its peso price and rating, and what each one changes while you drive.
Engines run from free to PHP 32,500, brakes PHP 900-3,500, tires PHP 750-1,600 each, batteries PHP 500-1,000. The free 4BC2 engine is fine until you can afford the 4JJ1 at PHP 7,000.
Every jeepney in Diesel n' Steel is built from the same families of parts, and every family has a free option and progressively more expensive ones. The free parts are placeholders, not a build. The question is which upgrade removes the most pain per peso while you are still driving a route.
Engines run from free to PHP 32,500, brakes from PHP 900 to PHP 3,500, tires from PHP 750 to PHP 1,600 each, and batteries from PHP 500 to PHP 1,000. Fluids are the cheapest upgrades in the game and the easiest to skip by accident.

Engines
| Engine | Price | Power | Consumption | Torque | Life rating |
|---|---|---|---|---|---|
| 4BC2 | Free | 88 hp | 10 km/l | 200 Nm | 6 stars |
| 4JJ1 | PHP 7,000 | 130 hp | 10.5 km/l | 290 Nm | 7 stars |
| 4JK1 | PHP 5,500 | 110 hp | 12 km/l | 280 Nm | 6 stars |
| 4BE1 | PHP 11,500 | 110 hp | 11 km/l | 235 Nm | 7 stars |
| 4HE1 single turbo | PHP 15,000 | 150 hp | 12 km/l | 380 Nm | 6 stars |
| 4HE1 twin turbo | PHP 15,500 | 135 hp | 11 km/l | 320 Nm | 6 stars |
| 4HK1 single turbo | PHP 25,000 | 205 hp | 10 km/l | 630 Nm | 7 stars |
| 4HK1 twin turbo | PHP 32,500 | 245 hp | 12 km/l | 720 Nm | 6 stars |
The 4JK1 at PHP 5,500 is the best economy buy: 12 kilometres per litre and 110 hp for less than the 4JJ1. The 4HK1 single turbo is the best all-round power buy with a 7 star life rating.
Transmissions
| Transmission | Price | Gears | Life rating |
|---|---|---|---|
| 4-speed manual | Free | 4 | 8 stars |
| 5-speed manual | PHP 1,000 | 5 | 6 stars |
| 4-speed manual, high ratio | PHP 20,000 | 4 | 6 stars |
The free 4-speed has the best life rating in the family, which makes the PHP 1,000 5-speed a genuine trade.
Brakes
| Brakes | Price | Brake torque | Life rating |
|---|---|---|---|
| B-01 | Free | 600 Nm | 3 stars |
| B-02 | PHP 900 | 700 Nm | 5 stars |
| B-03 | PHP 1,250 | 850 Nm | 3 stars |
| B-04 | PHP 1,500 | 900 Nm | 2 stars |
| B-05 | PHP 3,500 | 1,000 Nm | 10 stars |
B-05 is the standout: 1,000 Nm and a 10 star life rating for PHP 3,500, worth buying before the engine.
Tires
| Tires | Price each | Traction | Life rating |
|---|---|---|---|
| T-01 | Free | 5 stars | 3 stars |
| T-02 | PHP 750 | 7 stars | 3 stars |
| T-03 | PHP 1,000 | 5 stars | 9 stars |
| T-04 | PHP 1,300 | 4 stars | 5 stars |
| T-05 | PHP 1,600 | 10 stars | 9 stars |
T-05 is 10 star traction and 9 star life for PHP 1,600 a corner, the best all-round tire in the game. Prices are per position, front and rear.
Batteries, radiators and differentials
| Part | Free option | Paid options |
|---|---|---|
| Battery | BA-01, 3 stars life | BA-02 PHP 500 up to BA-05 PHP 1,000 (10 stars) |
| Radiator | R-01, 5 stars cooling | R-02 PHP 1,150, 6 stars cooling, 7 stars life |
| Differential | D-01, 5 stars performance | None published |
| Clutch | CL-01, 5 stars life | CL-02, 8 stars life |
A dead battery is a jeepney that will not start, and BA-05 at PHP 1,000 is the cheapest way to stop worrying about it.
Fluids, which are the cheapest wins in the game
| Fluid | Free | Best paid | Price |
|---|---|---|---|
| Engine oil | EO-01, 4 stars quality, 3 stars life | EO-05, 8 stars quality, 9 stars life | PHP 750 |
| Coolant | C-01, 7 stars cooling, 5 stars life | C-04, 8 stars cooling, 10 stars life | PHP 750 |
| Transmission oil | TO-01, 4 stars quality, 3 stars life | TO-05, 9 stars quality, 9 stars life | PHP 350 |
| Brake fluid | Free, 4 stars quality | 7 stars quality | PHP 355 |

The order to buy in
- Engine oil and coolant. Under PHP 1,000 total and they protect everything else.
- Brakes, B-05 at PHP 3,500 if you are driving anything heavy.
- Tires, T-05 at PHP 1,600 a corner.
- Battery, BA-05 at PHP 1,000.
- Engine, starting with the 4JK1 at PHP 5,500 or the 4JJ1 at PHP 7,000.
- Transmission, if you want the extra gear and can accept the shorter part life.
FAQ
Which upgrade should I buy first?
Better engine oil and coolant, then brakes. Fluids are the cheapest parts in the game and they protect the most expensive one.
Do tires really matter?
Yes. The free tires have a 3 star life rating and a heavy jeepney eats them.
Can I run the free parts and still make money?
On short routes, yes. On Malolos, the free brakes and tires cost more in crashes than the upgrades would have.