Applicable Engine:
JTD / DUCATO 2.8 / 8140.43S / 8140.43N
Applicable Brand:
FIAT / IVECO
Applicable Car:
JUMPER / DUCATO / Daily / BOXER
Product parameters:
| Displacement | Fuel | Cylinder | Vale | Camshaft | Year |
| 2.8 | Diesel | 4 | 8 | 1 | 2000 - |
Cylinder Head
Cylinder Head Fiat Iveco 2.8 JTD 8140.43S 8140.4.3N DUCATO 908544
Introduction
Product NO.
| ML NO. | OEM NO. | REF NO. |
| MLG123 | 2996390 500311357 504007419 | 908544 |
Product Information Cylinder Head
2.8L | Inline-4 | Turbo Diesel | 8-Valve | SOHC / OHV
1. Engine Overview
These engines belong to the 8140 diesel engine family, developed by Iveco / Sofim (FPT) and used in various Fiat and Iveco commercial vehicles. The later versions transitioned to JTD (Jet Turbo Diesel) technology with common rail injection.
| Engine Code | 8140.43S, 8140.43N, 8140.4.3N, 8140.43C, etc. |
| Fuel Type | Diesel |
| Configuration | Inline 4-cylinder, Turbocharged |
| Valvetrain | OHV or SOHC – 8 valves |
| Induction | Turbocharged (some with intercooler) |
| Emissions Level | Euro 2 / Euro 3 |
2. Cylinder Head Specifications
| Specification | Value |
|---|---|
| Displacement | 2.8L (2798 cc) |
| Cylinder Head Material | Cast Iron or Aluminum (variant-based) |
| Valves | 2 per cylinder (8 valves total) |
| Injection Type | Direct or Common Rail (JTD version) |
| Turbocharging | Fixed or wastegate turbocharger |
| Cooling System | Water-cooled |
| Timing Type | Belt or gear-driven camshaft (varies) |
3. Compatible Vehicle Models
| Manufacturer | Model | Engine Version(s) |
|---|---|---|
| Fiat | Ducato 2.8 JTD / TD | 8140.43S / 8140.43N |
| Iveco | Daily 2.8 HPI / Turbo Daily | 8140.43C / 8140.4.3N |
| Peugeot | Boxer 2.8 HDi (shared engine) | 8140.43S |
| Citroën | Jumper 2.8 HDi | 8140.43S |
| Renault | Master II 2.8 DTI (select models) | 8140.43N (Sofim engine) |
4. OEM Cylinder Head Part Numbers (Examples)
| Type | OEM Part Number(s) |
|---|---|
| Bare Cylinder Head | 98450769, 98404753, 504014179, 504014184 |
| Complete Head Assy | 500355279, 98461630, 99463865 |
| Head Gasket | 98438651, 500385072 |
Part numbers vary based on emission level (Euro 2/3), presence of EGR, and injector seat configuration.
5. Common Cylinder Head Issues
| Problem | Cause | Fix |
|---|---|---|
| Cracks between valves | Overheating | Replace head or weld and test |
| Worn valve guides/seats | High mileage or poor fuel quality | Regrind or replace |
| Head warping | Cooling system failure | Resurface or replace head |
| Leaking injector seats (JTD) | Damaged copper washers | Clean seats and replace washers |
| Oil leaks at cam housing | Improper sealing or aging seals | Reseal or replace gasket sets |
6. Installation Guidelines
- Always use new cylinder head bolts and follow torque specs (typically 3–stage tightening)
- Replace head gasket with OEM-spec multi-layer steel (MLS)
- Clean and inspect injector bores, glow plug threads, and valve springs
- Check valve clearances if mechanical tappets are used
- Pressure test before installation, especially for used heads