Applicable Engine:
WE / WLAT
Applicable Brand:
MAZDA / FORD
Applicable Car:
B2500 YM / BT 50 / RANGER
Product parameters:
| Displacement | Fuel | Cylinder | Vale | Camshaft | Year |
| 2.5 / 3.0 |
Diesel
|
4 | 16 | 2 | 2006- |
Cylinder Head
Mazda WE WLAT Turbo cylinder head 2.5L Diesel Engine B2500 YM BT50 RANGER
Introduction
Product NO.
| ML NO. | OEM NO. | REF NO. |
| MLG044 | WE0110100K WE0110100J 4986980 | 908749 |
Product Information Cylinder Head
The Mazda WE and WLAT engines are part of the WL diesel engine family, designed for 2.5L turbocharged diesel vehicles. These engines use a single overhead camshaft (SOHC) 8-valve cylinder head, cast from durable aluminum alloy for improved cooling and heat resistance.
The WE and WLAT cylinder heads are typically found in Mazda B2500, Ford Ranger, BT-50, and various commercial vehicles. These heads are reinforced to handle high combustion pressure from turbocharging and heavy-duty operation.
Technical Specifications
| Attribute | Details |
|---|---|
| Engine Models | WE, WLAT (WL-Turbo with Intercooler) |
| Displacement | 2.5L (2499cc) |
| Cylinder Layout | Inline-4 |
| Valvetrain | SOHC – 8 Valves (2 per cylinder) |
| Fuel Type | Diesel |
| Aspiration | Turbocharged (intercooled on WLAT) |
| Cooling | Water-cooled |
| Cylinder Head Material | Cast Aluminum Alloy |
| Camshaft Drive | Timing Belt |
| Compression Ratio | Approx. 21.7:1 |
OEM Part Numbers (Examples)
| Engine | OEM Numbers |
|---|---|
| WE | WE01-10-100, WE01-10-100A, WE01-10-100B |
| WLAT | WL01-10-100, WL-T 10-100, WLAT-10-100, WL31-10-100A |
WE heads are often considered heavy-duty variants of WL heads, with reinforced casting for thermal stress.
Vehicle Compatibility
| Brand | Model | Market |
|---|---|---|
| Mazda | B2500, Bravo | Asia, Africa, Middle East |
| Mazda | Bongo Friendee, Proceed Marvie | Japan Domestic Market |
| Ford | Ranger 2.5L Turbo Diesel | Global export markets |
| Ford | Everest (early diesel models) | Asia Pacific |
| JMC / Foton (licensed) | Light trucks, vans | China, Southeast Asia |
Installation Guidelines
- Surface Check:
Resurface if warpage exceeds 0.05 mm. Pressure test before installation. - Gasket Type:
Use a new multi-layer steel (MLS) gasket suitable for turbo diesel heads. - Torque Procedure (approximate):
- Step 1: Tighten all bolts to 30 Nm
- Step 2: Add 90° turn
- Step 3: Add another 90° turn
Use new TTY bolts and follow correct sequence.
- Component Replacement:
Replace water pump, timing belt, and tensioners. Clean oil and coolant passages. Check valve clearances post-installation.
Common Failure Points
| Symptom | Cause |
|---|---|
| White smoke / overheating | Cracked head around exhaust ports or pre-combustion chamber |
| Low compression | Valve seat wear or warped surface |
| Oil in coolant | Internal leak from head crack |
| Poor turbo response | Cracked exhaust port or backpressure leakage |
Available Product Variants
| Product | Description |
|---|---|
| Bare Head | Casting only, no components |
| Semi-Complete Head | Includes valves, springs, seals |
| Complete Head | Fully assembled with camshaft, lifters, pre-chamber plugs (plugged or open ports based on model) |
Popular Export Regions
- Asia: Philippines, Thailand, Malaysia, Pakistan
- Africa: Nigeria, Kenya, Egypt, South Africa
- Middle East: Iraq, UAE, Yemen
- South America: Bolivia, Chile, Peru
- Eastern Europe: Russia, Georgia, Ukraine
WL / WL‑T / WLAT • 2.5 L SOHC Turbo
| Typical VIN engine codes | Core production vehicles | Key markets / model years |
|---|---|---|
| WL, WL‑T | Mazda MPV (non‑US) 1995–1999 | EU/Asia |
| WL‑T | Mazda B‑Series trucks (B2500/Bounty) | 1995–2006 global |
| WL‑T | Mazda Bongo Friendee / Ford Fredaminivans | 1995–2005 JPN |
| WL / WLT | Ford Ranger (PE/PG/PH) & Ford Courier | 1998–2006 ASEAN/Africa/Oceania |
WE / WE‑AT • 2.5 L (DOHC evolution of WL) & 3.0 L variants
- Mazda BT‑50 (UN, 1st gen) — shares 2.5 & 3.0 L Duratorq/MZR‑CD diesels with Ranger
- Ford Ranger PJ/PK — 2.5 L DOHC & 3.0 L WE‑AT turbo‑diesels (2006‑2011, many ASEAN/AUS markets)
(WE heads are drop‑in on WL blocks but use larger ports, revised coolant jackets and cam‑cap pattern.)